Author Topic: CB750 drag bike  (Read 3962 times)

0 Members and 1 Guest are viewing this topic.

bodejay

  • Guest
CB750 drag bike
« on: July 04, 2010, 08:58:25 am »
Me and my bike. 73 Cb750/850 big bore kit. Runs 7.30s in 1/8th mile

Offline CBJoe

  • Master
  • *****
  • Posts: 1,974
Re: CB750 drag bike
« Reply #1 on: July 04, 2010, 09:34:43 am »
Doesn't appear that the pic posted  ;) 
'07 Bonneville Black
'15 Moto Guzzi California 1400
CB750K2 Hot Rod Revival http://forums.sohc4.net/index.php/topic,171693.0.html
'65 CB77
'66 CM91 (C90'ish)

Offline Sam Green Racing

  • Moderator
  • Really Old Timer ...
  • *****
  • Posts: 16,068
  • I REALLY? hate black rims.
Re: CB750 drag bike
« Reply #2 on: July 04, 2010, 11:02:52 am »
Me and my bike. 73 Cb750/850 big bore kit. Runs 7.30s in 1/8th mile

Was that on the 14/43 gearing and which strip did you run it, what's the best quarter mile time you've recorded ?

Sam. :)
C95 sprint bike.
CB95 hybrid race bike
CB95 race bike
CB92
RS 175. sprint/land speed bike
JMR Racing CB750A street ET drag bike

Offline dusterdude

  • Really Old Timer ...
  • *******
  • Posts: 8,469
Re: CB750 drag bike
« Reply #3 on: July 06, 2010, 04:30:27 pm »
im curious about quarter time too,sam ran a low 7.90 on my cbr 600 at piedmont a couple of years ago.ive been thinking about building a 750 dragbike,but i dont think the expense to make it go quick enough is worth the money.ive been 12.42 on my cbr and im a no riding mofo.if somebody can tell me how to build an 11 second 750 somewhat cheap(less than 2 grand)ill listen.
mark
1972 k1 750
1949 fl panhead
1 1/2 gl1100 goldwings
1998 cbr600 f3

Offline Sam Green Racing

  • Moderator
  • Really Old Timer ...
  • *****
  • Posts: 16,068
  • I REALLY? hate black rims.
Re: CB750 drag bike
« Reply #4 on: July 07, 2010, 01:33:51 am »
im curious about quarter time too,sam ran a low 7.90 on my cbr 600 at piedmont a couple of years ago.ive been thinking about building a 750 dragbike,but i dont think the expense to make it go quick enough is worth the money.ive been 12.42 on my cbr and im a no riding mofo.if somebody can tell me how to build an 11 second 750 somewhat cheap(less than 2 grand)ill listen.

That was after just 4 passes Mark, I'm sure a high 6 would be possible with more seat time and set up. ;) It was a nice bike to ride, you need to get out on it more. 8)
I'd bet you a stock motored 750 could run 11s if it could be made light enough.

Sam. ;)
C95 sprint bike.
CB95 hybrid race bike
CB95 race bike
CB92
RS 175. sprint/land speed bike
JMR Racing CB750A street ET drag bike

bodejay

  • Guest
Re: CB750 drag bike
« Reply #5 on: July 08, 2010, 07:46:23 pm »
Sorry about the pic, i cannot figure out posting pics on here. With the 14/43 gearing my best time has been 11.80s, which i only ran once on a 1/4 mile strip last year. I mainly race on a 1/8th mile track, it will run 7.30s-7.40s with a 220lb rider. 92-93mph. Bike has solid rear, 5.5in goodyear slick. charging system has been removed, along with electric starter. Also running airshift and 2 step.

Offline Retro Rocket

  • Eggs are hard due too a
  • Really Old Timer ...
  • *******
  • Posts: 19,279
  • ROCK & ROLL
Re: CB750 drag bike
« Reply #6 on: July 08, 2010, 08:32:04 pm »
My Old drag bike {i didn't race it} ran in the 10's, it was 776cc with 14.5to1 compression running wheelie bars and old CR31's with methanol, i have all the documentation and times put away, when i get it out i will post more. This is just after i bought it...


Mick
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 MRieck

  • Really Old Timer ...
  • *******
  • Posts: 10,546
  • Big ideas....
Re: CB750 drag bike
« Reply #7 on: July 08, 2010, 09:03:59 pm »
Sorry about the pic, i cannot figure out posting pics on here. With the 14/43 gearing my best time has been 11.80s, which i only ran once on a 1/4 mile strip last year. I mainly race on a 1/8th mile track, it will run 7.30s-7.40s with a 220lb rider. 92-93mph. Bike has solid rear, 5.5in goodyear slick. charging system has been removed, along with electric starter. Also running airshift and 2 step.
Hit additional options, hit browse, pics should open, click on a pic, hit open. Unless you have a Mac (my nemesis). 
Owner of the "Million Dollar CB"

Online scottly

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 16,172
  • Humboldt, AZ
Re: CB750 drag bike
« Reply #8 on: July 08, 2010, 09:18:54 pm »
Also, attached pics must be 256K or less...
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Online scottly

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 16,172
  • Humboldt, AZ
Re: CB750 drag bike
« Reply #9 on: July 08, 2010, 09:27:43 pm »
Retro, your pic looks like it might have been taken in the US south-west! Not near my home town on the CA central coast; not enough eucalyptus trees. ;) 
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline Retro Rocket

  • Eggs are hard due too a
  • Really Old Timer ...
  • *******
  • Posts: 19,279
  • ROCK & ROLL
Re: CB750 drag bike
« Reply #10 on: July 08, 2010, 09:31:18 pm »
Definitely not in the US... ;) Actually 20 minutes south east of Brisbane city, i was so tempted to run it up the street... ;D

Mick
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.