Author Topic: CB750A Street ET bracket drag bike. A year to build it. (Read 607912 times)

dusterdude · « **Reply #4650 on:** November 16, 2014, 07:13:08 am »

Awww damn

Sam Green Racing · « **Reply #4651 on:** November 17, 2014, 02:43:39 am »

Quote from: madmtnmotors on November 16, 2014, 07:01:46 am

Looks like SamAuto has an issue in the bottom end. Either primary chains or transmission. May have discovered part of the problem Sam had in Virginia. I'm sure Bill will follow up with the gory details once he tears into it.

Sent from my iPhone using Tapatalk

I'm glad no one rode it in anger, I know it ran but I had my doubts about the box/trans.

Sam.

Sam Green Racing · « **Reply #4652 on:** November 17, 2014, 02:47:46 am »

It might have its faults but I know someone who likes it.

LArzFroMArz · « **Reply #4653 on:** November 17, 2014, 12:00:45 pm »

Sam I'll post the video I think I have of Bill's run... the bike appeared to present the problem at about the same point in the track at the top of the lo range gear before the shift to hi. The bike launched hard (enough hard launches like Sam Auto has had and something is bound to happen, right?), sounded crisp in the pits (the new plug wires seemed to help too), accelerated well (Bill left a 15 foot strip in the pits) but coming up on the shift point Bill had a similar reaction to yours (sat up and looked around), so there were enough similarities to confirm it was NOT something Driver instigated!
I'll get the link up for all the videos after wrangling the homestead....

Incredible weekend it was for so many reasons, but the outpouring of Love for Mr. Sam Green was the best!
I'm booking driver coaching with you Sam Green in 2015 at Commerce and Valdosta...if we can get you out of the Tower and Hooters!

Sam Green Racing · « **Reply #4654 on:** November 17, 2014, 03:13:01 pm »

That's good/bad news Larry, a least, no one got hurt this time.
I'm sorry mate but I doubt I will be able to make another trip to the States (several Reasons) so Billy will have to be your mentor.

Real pleased you all had a blast, who all else was there?

Sam.

Jerry Rxman Griffin aka MuthaF'er · « **Reply #4655 on:** November 17, 2014, 03:14:04 pm »

Sam,

Ian AND the the Hooters Girls missed you. Of course we did too. Lots of folks asking how you are.

Your bike sounded like it missed a gear shift and revved up. I thought 'what the hell is Bill riding?' Action plan in place.

Bill/BentON Racing · « **Reply #4656 on:** November 17, 2014, 08:01:56 pm »

Quote from: Jerry Rxman Griffin aka MuthaF'er on November 17, 2014, 03:14:04 pm

Sam,

Ian AND the the Hooters Girls missed you. Of course we did too. Lots of folks asking how you are.

Your bike sounded like it missed a gear shift and revved up. I thought 'what the hell is Bill riding?' Action plan in place.

A hell of a plan! Stay tuned, Bill

LArzFroMArz · « **Reply #4657 on:** November 18, 2014, 11:19:39 am »

Here is Fridays run...you can see Bill has a similar reaction as Sam at nearly the same spot in the run, however the bike did not get out of shape this time... back on the trailer and into the shop...
https://www.youtube.com/watch?v=xBRF7IBDS-A

Bill/BentON Racing · « **Reply #4658 on:** November 18, 2014, 08:57:24 pm »

We/me was lucky! But the engine Top End with the carbs cleaned and plug wires has never been so strong, wow it was so much better down low, Bill

bartman72 · « **Reply #4659 on:** November 29, 2014, 02:09:15 am »

Hi guys this has been a great post to follow and I cant wait to see how well these bike perform, I have been following closely for info to use in my own cb750 drag bike build.

Thought I would attach a pic of my Fathers Honda 4 runs 11.8s at best consistently 12.1's on the 1/4 mile and its only and 836 with a mild cam no airshift and standard carbs.

We just took out first(dad) and second(me) for the All bike Nostalgia Class at Benaraby Australia these old bikes are a real buzz .

Keep upright and fast guys.

Bill/BentON Racing · « **Reply #4660 on:** November 30, 2014, 01:16:02 am »

Nice, we like pics, thanks, Bill. Now look, we ain't wastin' time! Pulled this yesterday afternoon, but the drugs from the dentist had me loopy! Will posts pic of engine a little later. We have some evidence I haven't had time to checkout. Leaving it for Mike Rieck, but pan has to come off to remove engine...tap once falls into oil pan! Damn! Oil screen has debris, pics a little later, been up since 1:30 trying to feel better. Trivia, tooth #3 has 3 roots!

Bill/BentON Racing · « **Reply #4661 on:** November 30, 2014, 01:22:35 am »

OK, I went and took pics!

no still got to inspect with magnet, scope, fingers, eyes etc.

Bill

dragracer · « **Reply #4662 on:** November 30, 2014, 06:51:30 am »

Heck Bill, you're that close, I doubt Mikes going to mind you splitting the cases to at least take a peek. He'll then know his starting point. Plus enquiring minds want to know. Lol.

kmb69 · « **Reply #4663 on:** November 30, 2014, 07:32:07 am »

I vote: DO NOT SPLIT THE CASES.

Put the oil pan back on and ship it. Don't even clean the screen.

We do not want any of the automatic hydraulic system disturbed.
Let Mike do an uncontaminated forensic study.

That was the whole point of involving Mike.

Bill/BentON Racing · « **Reply #4664 on:** November 30, 2014, 09:07:40 am »

+1! Going to Mike's untouched, wouldn't have pulled pan except you got too!

Bill

Jerry Rxman Griffin aka MuthaF'er · « **Reply #4665 on:** November 30, 2014, 09:17:31 am »

That schmegma on the screen looked like mine the first round. Not so bad the second time. Fibrous gunk. Likely from the new clutch plates, rags, towels, etc? Good lesson for all on pulling the pan after a few miles on a rebuild I'd say.

Mike, get out that magic wand bro.... maybe you can use some of your new NFL gear

kmb69 · « **Reply #4666 on:** November 30, 2014, 09:37:39 am »

Quote from: Jerry Rxman Griffin aka MuthaF'er on November 30, 2014, 09:17:31 am

... maybe you can use some of your new NFL gear

Spanky, You're BAD!!!

dragracer · « **Reply #4667 on:** November 30, 2014, 01:59:25 pm »

Well, i guess it makes sense. After all, he is the one who build this motor to begin with so its his baby in a manner of speaking.

Bill/BentON Racing · « **Reply #4668 on:** November 30, 2014, 03:02:08 pm »

Yes, he was! And now we got a little mo info! Top end strong, but it's Mike's to do what he wants.

1000cc, 900F stroker crank, my 34 CV's CBX750 carbs. ......we can dream!

Bill

kmb69 · « **Reply #4669 on:** November 30, 2014, 03:08:27 pm »

That too, but I think Mike only built the top end. It could be a simple mechanical issue but we are suspicious that the hydraulics are misbehaving. It sometimes acts like both clutches are engaged at the same time and possibly locking the tranny at shift time. We suspect that Clutch 1 may not be disengaging as it should before Clutch 2 engages. We just wanted Mike to do a methodical teardown and inspection in the event it may be something more than mechanical failure.

I think everybody is anxious to know why this beast threw our Team Captain Sam on the ground.

Sam Green Racing · « **Reply #4670 on:** November 30, 2014, 04:07:01 pm »

I think we should do away with the torque converter all together and just have a direct drive like this.

Sam Green Racing · « **Reply #4671 on:** November 30, 2014, 04:08:22 pm »

Looks Sandcast as well Keith.

kmb69 · « **Reply #4672 on:** November 30, 2014, 04:13:36 pm »

Yes, Sir!!! I think it is.

Sam, Do you have pictures of any other views of that thing?

Sam Green Racing · « **Reply #4673 on:** November 30, 2014, 04:36:56 pm »

It's just a stock motor that they fitted in their attempt at a snowmobile Keith.
Try Google search for Honda Snowmobile.

Sam.

Bill/BentON Racing · « **Reply #4674 on:** November 30, 2014, 04:40:19 pm »

Mike assembled BE also. We just didn't have new clutches at that time. Crank was balanced etc. we do have the 900F crank, The 1100F rods you sent, new primary chain HyVo, I got the 73m pistons with 17mm pin, rings, clips etc. Mike you up for going for the record? Think we can do it. Can send all that stuff, if you want to try! Sam and Keith will prvide sponsorship $! Haha. Have more new clutches, gaskets, etc. C'mon Mike, lets do it right!

Bill

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Author Topic: CB750A Street ET bracket drag bike. A year to build it. (Read 607912 times)