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Author Topic: CB750K2 Bionic Mongrel Build  (Read 78113 times)

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Offline Retro Rocket

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Re: CB750K2 Bionic Mongrel Build
« Reply #250 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
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Offline SOHC4 Cafe Racer Fan

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Re: CB750K2 Bionic Mongrel Build
« Reply #251 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 #252 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 #253 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 DurangoCB

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Re: CB750K2 Bionic Mongrel Build
« Reply #254 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 #255 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 #256 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 #257 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 mAd mOrdigan

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Re: CB750K2 Bionic Mongrel Build
« Reply #258 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 #259 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 #260 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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