Saturday Night Racer - bako hobby rear end ?

W1CK3D R4C1NG LMR Senior Offline Posts: 492 Bakersfield	bako hobby rear end ? 09/17/09 at 8:01pm are the bako hobby's allowd to run a full or mini spool in the rear ends? i looked at the rules and it says "no aluminum spools" does that mean that steel spools or ok? Thanks... Rich oh, and what gears should he be running with a powerglide?
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TIM_BEWLEY LMR God Offline road zombie Posts: 1629	Re: bako hobby rear end ? Reply #1 - 09/17/09 at 10:29pm ok the way i read it 411 is the most popular
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17t_racer

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Re: bako hobby rear end ?
Reply #2 - 09/18/09 at 6:32am

W1CK3D R4C1NG wrote on 09/17/09 at 8:01pm:

are the bako hobby's allowd to run a full or mini spool in the rear ends?

i looked at the rules and it says "no aluminum spools" does that mean that steel spools or ok?

Thanks...
Rich

oh, and what gears should he be running with a powerglide?

Yes you can run a full spool as long as it is not aluminum. I have run 7.33 and 4.11 with my powerglide. I have heard some running a 4.22 gear as well.

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W1CK3D R4C1NG LMR Senior Offline Posts: 492 Bakersfield	Re: bako hobby rear end ? Reply #3 - 09/18/09 at 7:20am right on guys... thanks for the info... i'll let him know...
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JOHNSON MOTORSPORTS 99 LMR God Offline 2007 HOBBY STOCK CHAMPION Posts: 927	Re: bako hobby rear end ? Reply #4 - 09/18/09 at 2:41pm depends on the RPMs your looking for. i turn between 6600-7100 with my 411. with a 733 running in drive you have to have a balanced drive line...
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W1CK3D R4C1NG LMR Senior Offline Posts: 492 Bakersfield	Re: bako hobby rear end ? Reply #5 - 09/18/09 at 6:02pm cool... thanks
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TIM_BEWLEY LMR God Offline road zombie Posts: 1629	Re: bako hobby rear end ? Reply #6 - 09/19/09 at 8:49am JOHNSON MOTORSPORTS 99 wrote on 09/18/09 at 2:41pm: with a 733 running in drive you have to have a balanced drive line... why not with the 411? please explain.
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Dietzsch_Racing25

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Re: bako hobby rear end ?
Reply #7 - 09/21/09 at 9:16am

TIM_BEWLEY wrote on 09/19/09 at 8:49am:

JOHNSON MOTORSPORTS 99 wrote on 09/18/09 at 2:41pm:

with a 733 running in drive you have to have a balanced drive line...

why not with the 411? please explain.

If you run in drive with a 7.33 rear gear the drive shaft is spinning at engine rpm (i.e. 6600-7100 rpm ). All the reduction is done with the rear gear.

If you run in first with a 4.11 rear gear the drive shaft is spinning much slower because the first reduction happened in the trans (1.82 or 1.76). In this case the drive shaft would be spinning at 3750 or 3626rpm (depending on 1st gear ratio), assuming 6600 engine rpm.

IMO the shaft should be balanced in either case but it is more critical if you're running in drive.

CD

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JOHNSON MOTORSPORTS 99

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Re: bako hobby rear end ?
Reply #8 - 09/21/09 at 10:54am

Dietzsch_Racing25 wrote on 09/21/09 at 9:16am:

TIM_BEWLEY wrote on 09/19/09 at 8:49am:

JOHNSON MOTORSPORTS 99 wrote on 09/18/09 at 2:41pm:

with a 733 running in drive you have to have a balanced drive line...

why not with the 411? please explain.

If you run in drive with a 7.33 rear gear the drive shaft is spinning at engine rpm (i.e. 6600-7100 rpm ). All the reduction is done with the rear gear.

If you run in first with a 4.11 rear gear the drive shaft is spinning much slower because the first reduction happened in the trans (1.82 or 1.76). In this case the drive shaft would be spinning at 3750 or 3626rpm (depending on 1st gear ratio), assuming 6600 engine rpm.

IMO the shaft should be balanced in either case but it is more critical if you're running in drive.

CD

THIS IS EXACTLY RIGHT. IF YOU DONT BALANCE YOUR DRIVE SHAFT WITH A 7.33 AND RUN DRIVE YOU WILL BE PULLING YOUR TRANSMISSION OUT TO GET IT LOOKED AT BOUT EVER 3 TO 5 RACES.....AND ON TOP OF THAT THE DRIVER WILL NOT ENJOY THE VIBRATION TO GO ALONG WITH IT LOL.

4.11 WITHOUT A BALANCED BUT GOOD(NOT BENT OR ANYTHING) DRIVELINE YOU CAN STILL RUN THE WHOLE SEASON WITH A GILS TRANSMISSION POWERGLIDE WITHOUT NEEDING A REBUILD MID SEASON

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TIM_BEWLEY LMR God Offline road zombie Posts: 1629	Re: bako hobby rear end ? Reply #9 - 09/21/09 at 4:36pm Dietzsch_Racing25 wrote on 09/21/09 at 9:16am: IMO the shaft should be balanced in either case CD this is my opinion also. you are just gambling if you run a non balanced driveshaft. but thanks for the indepth answers guys
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