Topic: CB750A Street ET bracket drag bike. A year to build it.

[Sam Green Racing]

  wheelies off the line now we're talking.

Sam.

[Jim F]

If this shop can modify the converter, we will have to re-think the gearing as well
might need to run wheelie bars but one step at a time
first the brakes..............

[dragracer]

I have the air tank over in my shop to install the filler valve and air pressure gauge
the torque converter went on Monday out to shop to look at what its going to take to give us
a stall speed in the 4500 to 5000 RPM range (He thinks he can do it) so we will see.........

Jim

Side bar to the torque converter statement; Jim, can you give me the name of that convertor shop? Or if you talk to them any time soon, please  inquire on my behalf about increasing the stall on a VW Type 3 automatic torque converter.

Glad you guys are trying to up the stall more, it will put less stress on the brake system to acheive the proper launch rpms.


As usual, great work by Bill and Jim to get Samauto in the winners circle. Thanks for all you guys have done to make the SOHC community an active part of Samauto's  transition from a ho hum street bike to a consistent bracket bike. Props to Mike and Jon as well and to a big tip of the hat to Sam for even coming up with the concept.

[Bill/BentON Racing]

+1!!!!!!!!!!!!!!!!!!!!!!!!!!!! Thanks,Bill

[Jim F]

I have the air tank over in my shop to install the filler valve and air pressure gauge
the torque converter went on Monday out to shop to look at what its going to take to give us
a stall speed in the 4500 to 5000 RPM range (He thinks he can do it) so we will see.........

Jim

Side bar to the torque converter statement; Jim, can you give me the name of that convertor shop? Or if you talk to them any time soon, please  inquire on my behalf about increasing the stall on a VW Type 3 automatic torque converter.
Frank did you get my PM?

Glad you guys are trying to up the stall more, it will put less stress on the brake system to acheive the proper launch rpms.


As usual, great work by Bill and Jim to get Samauto in the winners circle. Thanks for all you guys have done to make the SOHC community an active part of Samauto's  transition from a ho hum street bike to a consistent bracket bike. Props to Mike and Jon as well and to a big tip of the hat to Sam for even coming up with the concept.

[POPS 911]

TANK?  You got a swing arm = weld in a bung tapped for fill valve and gauge and fill to 125lbs.  [ I Got three swing arms in the shop with air connections ] No more weight added.

POPS BK911 NHRA

[Jim F]

This is a small aluminum tank that was originally used for an air shifter
it might be a quart in volume..............

[dragracer]

Might be time for a longer swingarm guys. And find a way to put some shocks on the bike too - might want to eventually consider a mono shock set up due to the frame configuration.

[jweeks]

     It will never wheelie off of the starting line. A well sorted Hondamatic with the right cam, gearing, and ignition will power wheelie further down the track. Adding a wheelie bar will probably end competition in Street ET brackets. A longer swingarm will reduce the strength of the wheelie, but the bike will let you know when the peak torque occurs. I don't see this becoming a problem for Sam's bike in it's current configuration.
     Neal Chance Transmissions does oddball torque converters. It can be googled.

                                                                        Jon Weeks

[POPS 911]

MR. WEEKS: So this bike CB750A  will be wheeling at the 1/8 mile and hitting that beam [ 6 " off the ground ]  with the rear wheel ?  I got a bike I will bring to the CUP RACE that can do that at the 330', 660', 1000' and the 1320' beam and it's a AUTO-MATIC but not a HONDA.  My 42 year old daughter rode it last Wednesday at a track rental and I asked her how is it to ride a " unicycle"  thank GOD she never wanted to be a motorcycle drag racer as her middle name would have been " LIFE FLIGHT ".

POPS BK911 NHRA

[Sam Green Racing]

Any news people ? 

[voodooracer]

 Yeah, what he said!! Whazup?

[Jim F]

Up date
The converter is being modified and should, according
To the shop should give us a stall speed of 3800 to 4300
This will also give us a base line to test from and if we need
To make changes he will have the numbers
The air tank for the line lock is finished as the
Air gauge and filler cap have need installed
Still need to get the bike over to install the line lock
As time allows
Jim

[bwaller]

The plot thickens.....well done fellas.

[Sam Green Racing]

Yes, I agree Brent, we need another winner on this forum, mine has been to long coming.

I get fed up of keep coming second.

Sam.

[bwaller]

The guys are to be commended for finding the right people concerning this whole converter issue. I find this interesting, good luck moving that issue forward.

[Jim F]

Just got the word that the converter is finished and is shipping back today
we shall see
Jim

[Tintop]

The guys are to be commended for finding the right people concerning this whole converter issue. I find this interesting, good luck moving that issue forward.

+1  The resources you have managed to pull together is quite amazing.

[dragracer]

The guys are to be commended for finding the right people concerning this whole converter issue. I find this interesting, good luck moving that issue forward.

+1  The resources you have managed to pull together is quite amazing.

What he said and what he said-lol!!!

Good  work as usual guys. Chomping at the bit to see this beast get down the track with the new stall and brake lock.

[Bill/BentON Racing]

Ok,Jim won this race! More updates!

This being worked on ,then mount and color match!

Should add a couple mph.

Sam......the MAGIC button!!!!!!!!!

Gotta safety wire grip,don't need to see the Sam "Shakes"dance again!!!!!!!!!!!!!!

I like it Suzuki GSXR750 2003? m/cyl. and neat little air cylinder!

Little air tank will mount to the two bolts with ltwt alum straps(Jim)

CBX750 carbs 34mm, ready to try,thanks Bear!

As Jim stated one of these on the way back!!!!!!!!!!!!!!!!!!!! The coolest thing we're working on...could lead to
respectable 60ft times,if so,watch out world,we coming!!!
More later!! Lot's going on! Bill

[Sam Green Racing]

  Billy, are you going to put the 295 cam back in ?

Sam.

[Bill/BentON Racing]

  295......back in? Back in the box? Oh you mean back in motor? As Brent said "the plot thickens"...so the answer is in the future! .
Ran a best of 12.40 with 125/75 cam,best of 12.36 with 295 cam.Not giving up yet on 125/75 yet,but am ready to go 295 if need be! Bill

[Bill/BentON Racing]

Damn,did ya'll clam up? I like you better cammed up! Maybe answer in converter,not cam!! We'll know soon! Bill

[dragracer]

Damn,did ya'll clam up? I like you better cammed up! Maybe amswer in converter,not cam!! We'll know soon! Bill

We're waiting for the parts delivery too-lol.

[Jim F]

The converter I hope will be in Monday or Tuesday
would like to get that on the bike and just see where we are
If its good (3800 to 4000)
then go to getting the line lock mounted
then off to commerce for the next step

I guess
Jim