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 Post subject: Re: Gearset
 Post Posted: Sat Sep 17, 2011 12:34 am 
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Joined: Wed Apr 19, 2006 6:43 am
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Location: Tell City, IN
Well.. I raced last sunday and everything was fine. Running 6.19-6.20 got down to 4 cars and yanked the tire out of the beam .052 red. Went out tonight with it, double points.. I ran 6.16 off the trailer
and another 6.16 then a 6.158. So I had a 6.15 on the window... Won 1st 2 rounds... 3rd round launched had the tree and boom...gearset broke again O:)
I have not pulled the cover off yet but putting it in gear only lets the driveshaft spin without any effort to move the truck... Those ebay gears...must have been old..who knows.
Anyway had another set of 4.56 or 4.88's in the works so I am picking those up tomorrow. These are new never ran. Maybe I can get more life out of these not sure..... Anyway the night ended with me and another guy tied for 1st in points. the guy in 3rd is 5 away. Next weekend who wins will be the points champion for the class. I am hoping I can pull it off... =D>

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 Post subject: Re: Gearset
 Post Posted: Sat Sep 17, 2011 7:37 am 
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Man you just cant win with that rear Jody!!!
A 9" is in need of bad for sure or a Dana 60 as there just about bullet proof.. =;

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 Post subject: Re: Gearset
 Post Posted: Sat Sep 17, 2011 8:39 am 
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A Dana 60 is strong, but man, those things are a PITA to setup!! Gawd how I hate fooling with those things and there is one of those in the Studebaker. A 9" on the other hand is a piece of cake and I won't have anything else since I did my first one back about 7/8 years ago.

The Dana in the Studebaker has had one gear break and that was a street gear not a pro gear. I broke that one on the starting line down at Piedmont Dragway years ago.

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 Post subject: Re: Gearset
 Post Posted: Sun Sep 18, 2011 7:45 am 
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Have to agree with you on the Dana 60!!! Had one in the Vega and when I change the gear from 4.88's to 4.56's I just could not get it to have a good pattern so I just pulled it and dropped it off at a shop that does trans,rears etc..
Didn't feel bad as he could not get a good pattern also so had to get another set of gears and they were fine....
There were over a thousand runs on them when I sold it and never any issues =;

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 Post subject: Re: Gearset
 Post Posted: Sun Sep 18, 2011 2:55 pm 
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Beretta wrote:
Have to agree with you on the Dana 60!!! Had one in the Vega and when I change the gear from 4.88's to 4.56's I just could not get it to have a good pattern so I just pulled it and dropped it off at a shop that does trans,rears etc..
Didn't feel bad as he could not get a good pattern also so had to get another set of gears and they were fine....
There were over a thousand runs on them when I sold it and never any issues =;


I agree on the Dana60 ... strong but a PITA to work on.

I don't pay any attention to the pattern during setup (on any type rear). Set it up by the numbers and it will look fine under load (in the car). I check the depth several times to make sure I am right and it repeats. Check the backlash many places around the ring.

Rick


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 Post subject: Re: Gearset
 Post Posted: Sun Sep 18, 2011 7:48 pm 
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Location: Elizabethtown, KY
Good talking to ya last night Jody. Bummer about the gears though. Come to find out the carb caused Ron's car to quit on the line. It is a older Barry Grant. When he got on the trans brake and mashed the gas it sprayed fuel in the air about 6-8 inches O:) when it is cold out. I saw it when he tested it on a time run (he runs with out a hood). If he got into it easy it did alright. :-s

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 Post subject: Re: Gearset
 Post Posted: Mon Sep 19, 2011 4:13 am 
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Yea Steve good catching up. I was wondering what happened.. Sounds like there is a little dirt in it.
My old 750 done that to me and it was just dirt. Anyway I got a set of 4.56's on the way. Suppose to be here Wednesday. This time I will check the backlash at 4 different locations, use a different pinion dept gauge (then my normal one to verify against) and also have a friend look at it as well just for precautionary...

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6.11@110 Gas
1.3718 Sixty Foot with the rear wheels Gas

6.07@110 on Alcohol Injection with a 4-link 4-6-12
Best 60' 1.2537 Alcohol Injection 4-29-11
Thru the Mufflers!!


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 Post subject: Re: Gearset
 Post Posted: Mon Sep 19, 2011 7:43 am 
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Did you get new gears or more Ebay stuff? I think the 4.56 will be good for you. It may even pick it up some.

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 Post subject: Re: Gearset
 Post Posted: Mon Sep 19, 2011 10:28 am 
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What rear is in the truck now? Looks like a 10bolt, 7.5?

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 Post subject: Re: Gearset
 Post Posted: Mon Sep 19, 2011 11:22 am 
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It is an 8.5 10-bolt Steve the gears I am getting now are a new set from Summit. I broke the ebay gears in 17 passes... (the ones that are broke now).

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6.11@110 Gas
1.3718 Sixty Foot with the rear wheels Gas

6.07@110 on Alcohol Injection with a 4-link 4-6-12
Best 60' 1.2537 Alcohol Injection 4-29-11
Thru the Mufflers!!


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 Post subject: Re: Gearset
 Post Posted: Mon Sep 19, 2011 11:34 am 
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Do you know what the backlash was?

I have been working to make mine live, couple of recommendations if you are going to try and make it work. If you don't already, get one of those rear end covers that preload the caps. I have the moser one on my car. I also upgraded the bolt hardware to a stud step up from moser and upgrade the ring gear bolts to arp hardware. When seting up the gear, set the back lash to around .003-.005. It will reduce some of the shock on it.

Good luck.

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 Post subject: Re: Gearset
 Post Posted: Mon Sep 19, 2011 5:42 pm 
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The ring gear said .008 + or - 4 On this set I could only get it to 11 the last set was 9

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6.11@110 Gas
1.3718 Sixty Foot with the rear wheels Gas

6.07@110 on Alcohol Injection with a 4-link 4-6-12
Best 60' 1.2537 Alcohol Injection 4-29-11
Thru the Mufflers!!


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 Post subject: Re: Gearset
 Post Posted: Mon Sep 19, 2011 6:27 pm 
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I would do your best next time to tighten it up. .003-.005. IMO .011 is a ton with a transbrake.

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1/8   6.15@110 NEW BEST 27 Nov 11
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 Post subject: Re: Gearset
 Post Posted: Wed Sep 28, 2011 9:13 pm 
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I thought I had asked this question on this thread. Must not have submitted it I guess.....

Did you run a crush collar in this set up or a shim pack on the pinion gear?

Don

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 Post subject: Re: Gearset
 Post Posted: Wed Sep 28, 2011 9:49 pm 
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You posted it on my thread. Hardinsburg got another one. It had a collar and shims. It didn't look like a normal crush collar.

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6.7772 @ 101.51 1/8th 10.747 @ 122.24 1/4

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