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Author Topic: CB750K2 Bionic Mongrel Build  (Read 76437 times)

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Offline Blackfin5

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Re: CB750K2 Bionic Mongrel Build
« Reply #275 on: January 28, 2016, 11:54:56 AM »
Hi Don. 

I left off around page 3 and caught up this morning.  Can't wait to see this finished (you started in Dec 2013!).  I trust you can have it up and running by summer for a ride in my neck of the back-woods.

Cheers.
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Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #276 on: January 28, 2016, 12:10:21 PM »
Well, Kevin, you know how these builds have a life of their own.

Frankly, I have been more enthusiastic about my 650 engine in a 550 frame build.  I just finished the engine! 

Both builds are waiting on frame fab, but I am planning to focus from here on the 650/550 build before going back to this one.
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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 DEL130Y

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Re: CB750K2 Bionic Mongrel Build
« Reply #277 on: February 06, 2016, 10:31:55 AM »
Quick question.
what are the advantages of having the 50mm offset? handling or tank clearance?
I've just fitted a cbr1000rr front end on my 750 build, and was going to wait and try the standard rr triples first, as the wheel sizes and fork lengths are both different from the sohc set up!

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Offline Retro Rocket

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Re: CB750K2 Bionic Mongrel Build
« Reply #278 on: February 06, 2016, 02:14:36 PM »
Quote from: DEL130Y on February 06, 2016, 10:31:55 AM
Quick question.
what are the advantages of having the 50mm offset? handling or tank clearance?
I've just fitted a cbr1000rr front end on my 750 build, and was going to wait and try the standard rr triples first, as the wheel sizes and fork lengths are both different from the sohc set up!

Getting the offset right retains close to stock geometry which will help maintain its good handling characteristics, most, if not all modern front ends have less offset than these old bikes, giving bigger than stock trail {mainly due to less rake} and slowing down steering response, changing how the bike handles at the front, wheel size also comes into it but that basic answer addressing the offset... ;)
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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 #279 on: February 06, 2016, 05:54:05 PM »
The custom offset addresses the new front (changes the CBR offset), 18s front and rear and a slightly longer rear swingarm - to optimize geometry.
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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 DEL130Y

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Re: CB750K2 Bionic Mongrel Build
« Reply #280 on: February 07, 2016, 02:18:36 AM »
Thanks for the info fellas.

Sent from my SM-T210 using Tapatalk

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Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #281 on: May 25, 2018, 08:40:54 PM »
I sold the Bionic Mongrel project today.  Sadly, I had shelved the build two years ago giving way to greater interest in middle-weight CBs (my 550 and 650/550 project).

I traded the project to a friend for an amazing bike.  2014 MV Agusta Brutale Dragster 800 (1400 miles)!!

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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 #282 on: May 26, 2018, 03:08:54 AM »
Ah, and it begins... Love those Brutales!
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'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 DurangoCB

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Re: CB750K2 Bionic Mongrel Build
« Reply #283 on: May 26, 2018, 02:21:36 PM »
Those bikes are killer- congrats!  Don't die!!
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1971 CB500 Four- current project http://forums.sohc4.net/index.php/topic,170622.0.html
1978 CX500- next in line

Offline Davez134

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Re: CB750K2 Bionic Mongrel Build
« Reply #284 on: May 26, 2018, 03:57:53 PM »
HO-LY-SH*T That bike is awesome. Congrats.
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Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #285 on: May 26, 2018, 11:20:08 PM »
Thanks, guys.  I am pretty stoked to add this to the stable.  I'm not sure if I keep it long term or flip it in an year - but it's going to be a lot of fun riding it.
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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 scottly

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Re: CB750K2 Bionic Mongrel Build
« Reply #286 on: May 26, 2018, 11:29:56 PM »
Looks like a Transformer!!?? :o ;D
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Don't fix it if it ain't broke!
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Offline calj737

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Re: CB750K2 Bionic Mongrel Build
« Reply #287 on: May 27, 2018, 02:41:24 AM »
Quote from: scottly on May 26, 2018, 11:29:56 PM
Looks like a Transformer!!?? :o ;D
It is a transformer; it transforms a regular ride into an absolute joy-filled excursion like other bikes can not.
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'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 mAd mOrdigan

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Re: CB750K2 Bionic Mongrel Build
« Reply #288 on: June 24, 2018, 02:32:29 PM »
Darn I was skimming through the pages following your build. then I find it’s sold  lol. How did you ever mount the speed sensor and magnets for that chronoclassic? I was contemplating that gauge for my CB750 with gsxr front fork.
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Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #289 on: June 24, 2018, 06:52:37 PM »
Quote from: mAd mOrdigan on June 24, 2018, 02:32:29 PM
Darn I was skimming through the pages following your build. then I find it’s sold  lol. How did you ever mount the speed sensor and magnets for that chronoclassic? I was contemplating that gauge for my CB750 with gsxr front fork.

My magnet sensor on my last 750 was tapped and bolted onto my rotor.
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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 mAd mOrdigan

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Re: CB750K2 Bionic Mongrel Build
« Reply #290 on: June 26, 2018, 12:00:33 AM »
did you screw it into one of the fender mounts and then a magnet epoxied in part of the rotor?
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