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Author Topic: Stroker cranks and big motors for luhojs.  (Read 9729 times)

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Offline voxonda

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Re: Stroker cranks and big motors for luhojs.
« Reply #25 on: February 02, 2011, 04:50:25 am »
Really would like to see the inside Brian. Need to build something like that in the near future.

Rob
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Offline bear

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Re: Stroker cranks and big motors for luhojs.
« Reply #26 on: February 02, 2011, 05:34:29 am »
No worries Rob.
Didn't get out tonight.
But we will document the process.

Cheers
Brian
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Offline Sam Green Racing

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Re: Stroker cranks and big motors for luhojs.
« Reply #27 on: February 02, 2011, 06:42:40 am »
Quote from: bear on February 01, 2011, 04:43:51 pm
We are pulling the little motor tonight.
If anybody's interested I will have a crack at posting pics.
Should I start a new thread Sammy?

Cheers,
Brian

NO, sorry mate, it might be a sohc motor but this is not the zimmer frame forum.

Sam. ;D ;D ;D ;D ;D ;D ;D ;D ;D

P.S. have you drunk my beer yet? ::)
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Offline bear

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Re: Stroker cranks and big motors for luhojs.
« Reply #28 on: February 02, 2011, 01:03:16 pm »
Quote from: SamCB750A on February 02, 2011, 06:42:40 am
Quote from: bear on February 01, 2011, 04:43:51 pm
We are pulling the little motor tonight.
If anybody's interested I will have a crack at posting pics.
Should I start a new thread Sammy?

Cheers,
Brian

NO, sorry mate, it might be a sohc motor but this is not the zimmer frame forum.

Sam. ;D ;D ;D ;D ;D ;D ;D ;D ;D

P.S. have you drunk my beer yet? ::)


That's why I didn't get out ;D

Cheers,
Brian

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Offline Sam Green Racing

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Re: Stroker cranks and big motors for luhojs.
« Reply #29 on: February 02, 2011, 01:47:33 pm »
OK mate, let's see what's in that BIG little motor. ;D ;D ;D

Sam. ;)
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Offline bear

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Re: Stroker cranks and big motors for luhojs.
« Reply #30 on: February 08, 2011, 07:24:53 am »
Pics as promised.
Shift forks OK but it looks like we are chewing up the dogs on a couple of the gears again.
We changed our clutch configuration for PI.
That has probably caused the problem.
Take a look.

Cheers,
Brian
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Offline bear

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Re: Stroker cranks and big motors for luhojs.
« Reply #31 on: February 08, 2011, 07:27:56 am »
More pic's
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Offline bear

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Re: Stroker cranks and big motors for luhojs.
« Reply #32 on: February 08, 2011, 07:30:49 am »
Last lot for tonight, then it's off to bed.
Even fat publicans need their sleep.

Cheers,
Brian
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Offline MRieck

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Re: Stroker cranks and big motors for luhojs.
« Reply #33 on: February 08, 2011, 08:10:22 am »
 Brian
 Have you thought of cryo aging the transmission/forks/shafts?
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Offline BLUE71TURBO

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Re: Stroker cranks and big motors for luhojs.
« Reply #34 on: February 08, 2011, 08:53:37 am »
 Wouldn't it be better to back cut the transmission ?  Up and down cut ?
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Offline bear

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Re: Stroker cranks and big motors for luhojs.
« Reply #35 on: February 08, 2011, 02:05:03 pm »
Quote from: MRieck on February 08, 2011, 08:10:22 am
Brian
 Have you thought of cryo aging the transmission/forks/shafts?

Didn't know to much about the process until I read about it on this forum a little while ago.
From memory TIA was looking into it.
Hopefully he will be able to help.

Cheers,
Brian
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Offline MRieck

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Re: Stroker cranks and big motors for luhojs.
« Reply #36 on: February 08, 2011, 02:15:49 pm »
Quote from: BLUE71TURBO on February 08, 2011, 08:53:37 am
Wouldn't it be better to back cut the transmission ?  Up and down cut ?
Undercutting is good that's for sure. I think the ultimate process would be to hard weld the dogs/gears and undercut them followed by cyro aging followed by a coating. The coatings work well on the fork shafts and the forks.
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Offline bear

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Re: Stroker cranks and big motors for luhojs.
« Reply #37 on: February 08, 2011, 02:31:24 pm »
Quote from: BLUE71TURBO on February 08, 2011, 08:53:37 am
Wouldn't it be better to back cut the transmission ?  Up and down cut ?

We are way past that at this stage.
In the high load section of the box we use a much stronger gear set.
They have four large square undercut dogs.
We used to under cut our gear sets, but then we started ripping the dogs off.
The gear set we seemed to have damaged this time around has never given us a problem before.
We ran a locker clutch for the first time at PI and I believe it has put a lot of extra stress on the drive train.
We chewed up the mounting plate for the clutch basket as well, also caused by by the extra load generated by the locker I believe.

Cheers,
Brian

« Last Edit: February 08, 2011, 03:06:15 pm by bear »
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Offline Sam Green Racing

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Re: Stroker cranks and big motors for luhojs.
« Reply #38 on: February 08, 2011, 02:33:53 pm »
to much power mate. ::)
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Offline bear

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Re: Stroker cranks and big motors for luhojs.
« Reply #39 on: February 08, 2011, 02:41:10 pm »
Quote from: MRieck on February 08, 2011, 02:15:49 pm
Quote from: BLUE71TURBO on February 08, 2011, 08:53:37 am
Wouldn't it be better to back cut the transmission ?  Up and down cut ?
Undercutting is good that's for sure. I think the ultimate process would be to hard weld the dogs/gears and undercut them followed by cyro aging followed by a coating. The coatings work well on the fork shafts and the forks.

What's the go with this coating Mike?

Cheers,
Brian
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Offline bear

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Re: Stroker cranks and big motors for luhojs.
« Reply #40 on: February 08, 2011, 02:44:39 pm »
Quote from: SamCB750A on February 08, 2011, 02:33:53 pm
to much power mate. ::)

 ???
No such thing mate ;D

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Offline Sam Green Racing

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Re: Stroker cranks and big motors for luhojs.
« Reply #41 on: February 08, 2011, 02:53:00 pm »
Quote from: bear on February 08, 2011, 02:41:10 pm
Quote from: MRieck on February 08, 2011, 02:15:49 pm
Quote from: BLUE71TURBO on February 08, 2011, 08:53:37 am
Wouldn't it be better to back cut the transmission ?  Up and down cut ?
Undercutting is good that's for sure. I think the ultimate process would be to hard weld the dogs/gears and undercut them followed by cyro aging followed by a coating. The coatings work well on the fork shafts and the forks.

What's the go with this coating Mike?

Cheers,
Brian


Ceramic coating mate, = more power....oh I forgot, you already have to much of that, don't you. :D :D :D

Sam. ;)
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Offline bear

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Re: Stroker cranks and big motors for luhojs.
« Reply #42 on: February 08, 2011, 02:59:34 pm »

What's the go with this coating Mike?

Cheers,
Brian
[/quote]


Ceramic coating mate, = more power....oh I forgot, you already have to much of that, don't you. :D :D :D

Sam. ;)
[/quote]





Our exhaust is ceramiclly coated.
What's the go re the gear box?..............
AND NO SAMMY I DO NOT HAVE TO MUCH POWER

Cheers,
Brian ;D
« Last Edit: February 08, 2011, 03:01:41 pm by bear »
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Offline Retro Rocket

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Re: Stroker cranks and big motors for luhojs.
« Reply #43 on: February 08, 2011, 03:16:59 pm »
Ceramic coatings reduce friction and heat, i am doing the piston tops on my 1000cc build and have read reports of up too 60% reduction in temps by doing this. My gearbox is already back cut but i wouldn't mind the cryo and coating on it also....

Mick
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Offline Sam Green Racing

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Re: Stroker cranks and big motors for luhojs.
« Reply #44 on: February 08, 2011, 04:12:35 pm »
It don't reduce heat above your piston, it just stops it eating its way through it. ;D ;D ;D ;D ;D ;D

Sam. ;)  bed. ;D
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Offline Retro Rocket

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Re: Stroker cranks and big motors for luhojs.
« Reply #45 on: February 08, 2011, 05:04:10 pm »
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Offline MRieck

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Re: Stroker cranks and big motors for luhojs.
« Reply #46 on: February 08, 2011, 06:57:50 pm »
Quote from: bear on February 08, 2011, 02:59:34 pm

What's the go with this coating Mike?

Cheers,
Brian


Ceramic coating mate, = more power....oh I forgot, you already have to much of that, don't you. :D :D :D

Sam. ;)
[/quote]





Our exhaust is ceramiclly coated.
What's the go re the gear box?..............
AND NO SAMMY I DO NOT HAVE TO MUCH POWER

Cheers,
Brian ;D

[/quote] DLC (Diamond Like Carbon) coatings are nice. They are slippery, hard, wear well and don't change things dimensionally.. I want to do this to my rocker arms, rocker shafts, shift forks and shift shafts. The transmission for my 1000cc engine has had the dog/gear engagement surfaces hard welded and undercut. Was the undercut deep on your gear sets when your dogs sheared off Brian? Did they break on upshift or downshift....or it didn't matter? ;)
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Offline bear

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Re: Stroker cranks and big motors for luhojs.
« Reply #47 on: February 08, 2011, 07:34:49 pm »
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Offline bear

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Re: Stroker cranks and big motors for luhojs.
« Reply #48 on: February 08, 2011, 08:00:26 pm »
Quote from: MRieck on February 08, 2011, 06:57:50 pm
Quote from: bear on February 08, 2011, 02:59:34 pm


DLC (Diamond Like Carbon) coatings are nice. They are slippery, hard, wear well and don't change things dimensionally.. I want to do this to my rocker arms, rocker shafts, shift forks and shift shafts. The transmission for my 1000cc engine has had the dog/gear engagement surfaces hard welded and undercut. Was the undercut deep on your gear sets when your dogs sheared off Brian? Did they break on up shift or downshift....or it didn't matter? ;)



2nd and 3rd gear were the worst offenders re tearing off.
Usually on the up shift.
The others would usually round off and jump out of gear.
Case hardening the dogs would help reduce the wear rate but did not help when they sheared off.
Before we began using the HD gear sets, we would get better results using sallower angles on the back cut and shimming them nice and snug.
Even so, at that stage we  were happy if we got three meetings out of a gearbox.

It's just an ongoing balancing act.
We had the balance right, then we introduced the clutch locker now it's back to the drawing board.
All suggestions re a solution will be greatfully accepted.

Cheers,
Brian

Cheers,
Brian
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Offline bear

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Re: Stroker cranks and big motors for luhojs.
« Reply #49 on: March 02, 2011, 02:19:41 am »
Bump
Come on fella's.
There's some smart blokes here help me out.
We have redused the weight on the bob weights.
The alloy pressure plate was ripped up as well.
Any suggestions?
 
Cheers,
Brian
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