Author Topic: CB750K2 Bionic Mongrel Build  (Read 76454 times)

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Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #175 on: January 23, 2015, 06:31:40 AM »
When much longer shocks are installed it adversely changes the swingarm angle and the chain will touch the front there on over run so the delrin pad protects it.

You'll be happy with the new arm Don. Any change in the length compared to stock?

Thanks, Brent. Not as of yet, but I might go an inch over.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Restoration Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #176 on: January 23, 2015, 06:52:11 AM »
Wait, hold on.  You can just order things an inch longer?  Hmmmmm...... ::)
Ron

Stella - Logan's Senior Project    78 750K http://forums.sohc4.net/index.php?topic=141761.0

Logan's Reward - CB500 and CB550 Cafes    http://forums.sohc4.net/index.php/topic,147787.0.html

Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #177 on: January 23, 2015, 12:05:06 PM »
Yes, Ron.  That is the beauty of custom fabrication!!  And a builder with a strong race background.

I just got some very insightful information from Denis at CMR.  This is akin to Mick aka Retro's sage advice on rake and trail that he has been providing us for years:


"By using a CBR600RR front end you are reducing the wheelbase somewhat. Remember the fork offset on modern forks like the CBR600RR is usually around 35mm fork offset, while the stock CB750 was much larger than that (ALMOST DOUBLE I'll have to check the actual) so by bringing the forks and front wheel back you are reducing the wheel base. You are also transferring the engine forward by that same amount (which is good). So now you have to consider two things:

1) you need to raise the rear of the bike by 25mm (1 inch) by installing longer than stock shocks. Raising the rear end of the bike will reduce the fork angle or rake angle by 1 degree (which is good). 

2) lengthening the swing arm by 25mm (1 inch) will bring the wheelbase back to where it should be and give you even more weight transference forward (which is good). Now the bike will handle quite well."



That being said, I am going to consult further with Denis as to whether to run 17" versus 18" wheels and the appropriate width for the rear wheel and tire size to maximize handling while maintaining stability.
« Last Edit: January 23, 2015, 02:28:39 PM by CB750 Cafe Racer Fan »
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Retro Rocket

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Re: CB750K2 Bionic Mongrel Build
« Reply #178 on: January 23, 2015, 02:31:15 PM »
Just my opinion Don, these bikes were built around 18/19 inch wheels, lots were raced with 18/18, , i think they just look more balanced with 18's on them. I have some pics with these bikes with 17's on them and i think they look funny unless lowered to get the proportions right, which goes against the whole handling deal....just my opinion .... ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #179 on: January 23, 2015, 02:35:55 PM »
Just my opinion Don, these bikes were built around 18/19 inch wheels, lots were raced with 18/18, , i think they just look more balanced with 18's on them. I have some pics with these bikes with 17's on them and i think they look funny unless lowered to get the proportions right, which goes against the whole handling deal....just my opinion .... ;)

Mick,
I share the opinion regarding aesthetics, hence why I have always leaned toward the 18's.  To maximize handling, I am willing to consider 17's if they provide both a performance and procurement advantage.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Retro Rocket

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Re: CB750K2 Bionic Mongrel Build
« Reply #180 on: January 23, 2015, 02:44:50 PM »
Just my opinion Don, these bikes were built around 18/19 inch wheels, lots were raced with 18/18, , i think they just look more balanced with 18's on them. I have some pics with these bikes with 17's on them and i think they look funny unless lowered to get the proportions right, which goes against the whole handling deal....just my opinion .... ;)

Mick,
I share the opinion regarding aesthetics, hence why I have always leaned toward the 18's.  To maximize handling, I am willing to consider 17's if they provide both a performance and procurement advantage.

At the end of the day Don, the bike will handle well above its original intention with the other mods, they are raced here with 18's and are stupid fast, fastest 750/4 race bikes around... ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #181 on: January 27, 2015, 07:10:03 PM »
More input from Denis Curtis:

"Using the stock chain, drive sprocket and rear wheel sprocket you would be able to use a 150mm wide tire on the rear 18 inch wheel rim. You would need to use a wider rim (3.5 -4.5 inch inside) than the stock CB750 rim of 2.5 inch inside width.

With the 17 inch rear rim you would be able to use a 4,5 to 5 inch rim and a 160mm rear tire. You would have to use care to ensure the make and dimensions of the tire do not exceed that 160mm width and you would need to change your sprockets to 520 which is narrower than the 530 stock chain. These sprockets are readily available, fronts in steel and rears in aluminum. There is also the possibility of using offset sprockets, but I think 160mm is wide enough for your application."

I'm inclined to go with 18" wheels front and rear.  A 150mm rear tire will provide an improved contact patch and the difference between that an a 160mm tire is not overwhelming.  Plus it will require less modification of the drive chain and sprockets AND the ride height.

Thoughts?

1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Retro Rocket

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Re: CB750K2 Bionic Mongrel Build
« Reply #182 on: January 27, 2015, 08:07:59 PM »
Don, the K8 rear sprocket carrier sits 10mm wider, as does the K8 input shaft, thats why i'm going with a K8 bottom end for the 1000, {i'm not using stock hubs though} . With this combination you should be able to easily fit a 160 on a 4.25/4.5/4.75 inch x18 wheel. Cyclex have the offset front sprockets in 10mm as well... I know a 17 x 4.5 wheel fits as I have one in my F model frame at the moment in a stock swingarm, its off a GSXR 750J, all I needed to do was machine a little off the GSXR sprocket carrier and use a 10mm offset front sprocket to make it fit and line up... ;)  Just check out availability of 150 x 18 tires, that could be the only limiting factor, I know you can get good 160's in 18 inch, Continental has them in radials too.... ;)
« Last Edit: January 27, 2015, 08:13:48 PM by Retro Rocket »
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #183 on: January 27, 2015, 11:26:58 PM »
Bridgestone makes them for BT45s and BT-016 PROs.

1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Retro Rocket

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Re: CB750K2 Bionic Mongrel Build
« Reply #184 on: January 28, 2015, 12:35:19 AM »
Bridgestone makes them for BT45s and BT-016 PROs.

Cool, I haven't looked any further than the new Conti's, I'm dying to try them... Haven't heard a bad report yet... ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline Nuffsa Fugginnuff

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Re: CB750K2 Bionic Mongrel Build
« Reply #185 on: January 28, 2015, 03:57:34 AM »
I'm in!

This has been one hellava read. Loving it. Some much bike porn in one thread. Where too much is not enough.

Yeah, I confess, I've been taking notes for when I get around to my 'build'.
Alcohol & explosives, the key to a lasting relationship.

Offline bwaller

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Re: CB750K2 Bionic Mongrel Build
« Reply #186 on: January 28, 2015, 05:35:29 AM »
Turboguzzi is racing on the radial Conti's. It seems in the wet they don't inspire confidence, but he says they're awesome when it's dry.

Offline snowman

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Re: CB750K2 Bionic Mongrel Build
« Reply #187 on: January 29, 2015, 07:09:15 PM »
Don, one question.....do you ever slowdown.


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Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #188 on: January 29, 2015, 07:27:36 PM »
Come on, John. We all have motorcycles on the brain all the time!
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #189 on: February 03, 2015, 02:38:07 PM »
I'm am anxiously awaiting my new CMR chrome-moly boxed swingarm.  Denis and Byron are somewhere in the middle of fabricating TZ frames, swingarms and my swingarm, but I expect to get it in a couple of weeks.

In the interim, I sourced a used (cheap and beat up) CBR600RR wheel.  Yes, it has a ding in the rim and it is a 17" wheel, but it can be used by the CAD programmer to measure dimensions for the brake mounts, hub thickness, bearing seat diameter, brake mounts, etc. so that a new wheel can be cut to fit or something can be machined to fit.





« Last Edit: February 24, 2015, 02:42:57 PM by CB750 Cafe Racer Fan »
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #190 on: March 03, 2015, 10:48:56 PM »
Just got the following (teaser) pictures from Denis Curtis of CMR of my new swingarm:









All that is left is the new axle and then it will be on its way from Canada
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline bwaller

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Re: CB750K2 Bionic Mongrel Build
« Reply #191 on: March 04, 2015, 04:19:30 AM »
What axle Don. Stock replacement, or one with a big hole through the middle, maybe 20mm?

It's funny what gets a biker excited huh?

Offline calj737

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Re: CB750K2 Bionic Mongrel Build
« Reply #192 on: March 04, 2015, 04:30:52 AM »
By the way, what ever became of your green 550? I don't a build thread for it in your signature any longer-
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline sethdhawkins

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Re: CB750K2 Bionic Mongrel Build
« Reply #193 on: March 04, 2015, 06:20:35 AM »
That's pretty nice,!
All a man needs in this world is someone to love, if you can't give him that, give him hope, if you can't give him hope...just give him something to do!

1972-ish CB750K
1974 CB450
1974 CB360
1976 136' Ocean Going Tug

Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #194 on: March 04, 2015, 07:33:37 AM »
What axle Don. Stock replacement, or one with a big hole through the middle, maybe 20mm?

It's funny what gets a biker excited huh?

The axle is made from chrome-moly 4130 thick wall steel tube. Not sure if the dimensions but it is likely identical to yours.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #195 on: March 04, 2015, 07:49:24 AM »
By the way, what ever became of your green 550? I don't a build thread for it in your signature any longer-

The green 550 is still in my signature. It's a 1975 CB550K1. Right now, I'm waiting for my buddy Jay to fab brackets to mount my AP calipers (aft of the fork stanchions) and to cut spacers for my Lesters. I got longer 77-78 stanchions to fit both the Tarozzi brace and my fender. I picked up some oxidized stanchions, polished them and then had them powdercoated clear.  I also got a new pair of upper fork tubes from Frank (FBF). I will be swapping all of the internals (Racetech springs and valve emulators) over to the new forks.  I also picked up some machined preload adjusters. The tank also got a sanding a re-clear to get rid of some scratches. I'm hoping to have it roadworthy soon.

The brown 1978 CB550K dropped off my signature until I can figure out its fate. I was collecting parts to rebuild it but I'm having some issues with title. If that doesn't pan out, those parts (TTR400'swingarm, ported head, over bored cylinders, spare gas tank, etc.) will get transplanted into the CB550K1. It's up in the air but all of those parts will make it to one of the 2 550 bikes.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #196 on: March 04, 2015, 07:50:37 AM »
That's pretty nice,!

Yes, thanks! I can't wait to take delivery in a week or so.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline calj737

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Re: CB750K2 Bionic Mongrel Build
« Reply #197 on: March 04, 2015, 08:45:43 AM »
so is the 550 resto-mod running and "complete"? I know you're still planning on upgrades, but is it eligible under the rules for BOTM?
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #198 on: March 04, 2015, 09:03:25 AM »
so is the 550 resto-mod running and "complete"? I know you're still planning on upgrades, but is it eligible under the rules for BOTM?

The 550 has been running and complete for about a year, but I doubt it's worthiness as BOTM material.  She has pretty paint and some great mods, but no detailed shine or polish to the frame and engine.  She's a good little runner and fun to ride.  I think she might warrant a nomination ONCE I upgrade the front, brakes and wheels (Lesters).  I think she might be a contender a that point.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline SOHC4 Cafe Racer Fan

  • Speak up, Whipper-Snapper! I'm a
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Re: CB750K2 Bionic Mongrel Build
« Reply #199 on: March 16, 2015, 09:14:58 PM »
Just heard from Denis/CMR that my swingarm shipped out today from Canada!  Cannot wait to see that awesomeness!
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold