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Author Topic:   Mini Spool
Whitelightning
Dirt Freak

Total posts: 429
posted January 30, 2003 01:26 AM  
Hey I am gonna try to put in a mini spool in a 7.5 10 bolt gm this weekend. Is it hard? What do you have remove? Does it affect the ring and pinion cause I just paid someone to set that up?

Whitelightning
Dirt Freak

Total posts: 429
posted January 30, 2003 01:34 AM  
also do the clips go back on the end of the axles?

odb93
Dirt Forum Champ
Total posts: 537
posted January 30, 2003 11:32 AM  
Lighting I have no idea what you should do.

However I have a question to add.....

If you are running a minispool then your rearend is locked.

So when you are in the turns one wheel has to turn faster than the other.

Thus you are always burning one tire.

Is this way out in left field or what?

racer17j
Dirt Forum Champ
Total posts: 5390
posted January 30, 2003 11:40 AM  
it is also possible to stip out the spline inside the spool if your rearend housing is tweaked. for pure stock welded gears are the best way to go.

doubletrouble
Dirt Forum Racer

Total posts: 82
posted January 30, 2003 05:14 PM  
I have seen too many break that has been welded.I just installed my mini-spool in my 10 bolt 7.5 GM rear-end.It was a 26 spline axle.It was surprisingly simple to install.Remove the C clamps and pull out the axles a few inches.Remove the spider gears(they come right out after removeing pin)The spool is in 2 pieces slide one one the right side and one on the left,the axles slide back into place, there are two small spacers in the center that the pin goes back in.Fully locked rear end......welding the spiders sounds like more work and they will break,mini spool is permanent.

doubletrouble
Dirt Forum Racer

Total posts: 82
posted January 30, 2003 05:16 PM  
O Ya I almost forgot,Make sure you put the C clamps back in ....these hold your axels so they dont slide out

Whitelightning
Dirt Freak

Total posts: 429
posted January 30, 2003 07:52 PM  
yes I have seen many failures in welded spider gears, so im gonna give it a try and will keep ya posted, thanks everyone

Speed Racer X
Dirt Maniac

Total posts: 115
posted January 30, 2003 10:35 PM  

Belive what DoubleTrouble said! We tried welding the spider gears several times and never lasted more than (2) weekends. We bit the bullet and bought the Mini-Spool (7.5 GM) and had zero trouble since. Also be sure to over fill the grease.

racer17j
Dirt Forum Champ
Total posts: 5390
posted January 30, 2003 10:57 PM  
Do what racer17j said to do. Weld it up. If you been breaking the welds get another welder to do it. Will hold if welded right. Good Luck . just my two cents!


nate 11
Dirt Freak

Total posts: 316
posted January 30, 2003 11:04 PM  
will racer17j. I read your post tried to agree and give my two cents. before i could respond with my sloooow typng you said the same thing i was tring to say.lol nate 11

Whitelightning
Dirt Freak

Total posts: 429
posted January 31, 2003 02:58 AM  
well what do yall do if you need to get the spider gears out for any reason, had a freind that broke a spider gear after welding the thing up really really good and then couldnot get the gears out needed some torched then you risk cutting the wrong thing on accident so he had to change carriers, i would rather spend 85 dollars on a mino spool that was made and intended to lock a rear end and if I wanna change gears or anything pull the clips and pin and like majic you have a open carrier,run a big money race at another track that does not allow locked rears, pull the pin put spiders back in it a go, if you weld you cant do that, but i can see yall opinion on this also,

racer17j
Dirt Forum Champ
Total posts: 5390
posted January 31, 2003 09:21 AM  
yea samething racer17j just said.LOL nate 11

Slam_Shifter
Dirt Full Roller

Total posts: 53
posted January 31, 2003 08:45 PM  
Here is my opinion. If it is a stock geared carrier use the lincoln locker method. I have welded quite a few with no failures and if it would fail for some reason the stock carriers are a dime a dozen. However since you have obviously changed the gears use the mini spool. Better to scrap the spool or an axle instead of losing the gears and paying to have it set up again.

Just my thoughts.
Slam_Shifter

RentOcrew
Dirt Maniac

Total posts: 126
posted January 31, 2003 09:49 PM  
WELD IT!! I ran 33 races last year and NEVER had any trouble. I have had a friend break several mini spools. Like th guy said earlier if the weld breaks find another welder. There is a trick to welding it also that I thinks help in reducing your chances of breaking a axle.
Take the carrier out of the rear, leave the pin in and wedge all of the spider gears inward. Then weld all four corners on both sides. This will keep the slack out and eliminate axle breakage. Also after you finish welding make sure you clean all of the slag off as best as you can. Good Luck!!

uforacing51
Dirt Forum Champ
Total posts: 570
posted January 31, 2003 10:40 PM  
One thing I didn't see mentioned here, I have seen both welded and spools break, then I have seen both destroy the ring and pinion. So, from that I would say do the spool, it makes more sense than welding, welding is only as good as the welder.

redneck bubbas racing
Dirt Freak

Total posts: 283
posted February 01, 2003 12:06 AM  
I can address the problem with "What do you do if you break a spider gear?". Take all of the spiders out of the housing. Clean them real good with brake clean. Weld with a NICKEL rod every third gap. I believe its every third, you will end up with 4 welded gaps on each gear, they will be directly across from each other, like a + pattern. This way you saved your carrier.

powerglides
Dirt Freak

Total posts: 374
posted February 01, 2003 01:16 PM  
Redneck, I believe doing it that way allows the grears to move back and forth in the carrier and that puts trememdous strain on the carrier. Also every time you are on and off the gas a tiny little amount of metal gets broken or worn off and ends up in the oil. I have welded them with a mig with no problem and used a spool I guess It's personal preference.

redneck bubbas racing
Dirt Freak

Total posts: 283
posted February 02, 2003 11:18 PM  
Powerglides- You are exactly correct. It is intended to. When using stock axles, especially the 7.5 GM corporate axles, you need to allow slack. If you have contact with the wall or someone else (with your wheels) and the wheel is spinning it will usually break the 7.5 axles. By welding them as I described it allows about 2 inches of tire travel independent of the other wheel giving you a little of safety time. As far as using a MIG I agree. Most everyone has access to a stick and can buy a pound of nickel rods at the welding supply. Most people will have a bag of 2 year old 7018 or 6011's that have gotten damp way too many times thereby making a weak weld before they even start. I like to weld them with the stick and clean them real good. After that I fire off the Hobart handler and lay a bead over it to ensure no slag left escapes. Just my way of seeing and doing things.

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