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Tranny spider gear welding
Topic Started: Aug 24 2010, 12:19 PM (2,390 Views)
heiner921
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Is there a plate on a 93geo metro with a manual trans that will allow me to gain access to the spider gears? i wanna weld the gears so it will be like having posi traction where both front wheels will spin and not just the passanger side. This is for a project im building.
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mcmancuso
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No, here's the instructions on getting to the diff: http://geometroforum.com/topic/1387687/
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heiner921
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Anyone ever done this? its so i can make both front wheels both driving wheels instead of the passanger side being the driving wheel.
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Coche Blanco
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Both front wheels drive, they just slip.
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mcmancuso
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Yeah, a differential turns both wheels, but if one starts to slip the other slows down, this is not a 1 wheel drive car :D If you stop the passenger side from turning, the drivers side will spin. You may have a sticking caliper on the driver side.
Edited by mcmancuso, Aug 24 2010, 04:15 PM.
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heiner921
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well idk bout the sticking caliper but i lost the passenger half half when i got hit hard in a figure 8 race and i didnt move. so i was gonna weld it up so the drivers side would help me move if it happens again. when the passenger side comes out, the car will no longer move.
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Murf 59
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This is commonly done on the V8 cars for stock car racing. I tryed it on my Toy, Corolla. It was a disasster. Sorry my spelling sucks. The V8s have the break away HP to pull this off. The reason the one side free wheels and the other pulls is, the outside wheel in a turn has to travel farther than the inside. If you lock it by welding, it will have a tendency to skip around the corner or slide. If you lucky. That is why lockers unlock going around a corner and then reengage when the corner is past. For saftey sake please do not do this.
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Coche Blanco
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I get what you're saying now, you broke a half shaft...and basically 100% of your power went to the broken side.

Yes, welding is your only realistic option.

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Murf 59
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In the way back. Before all the tech we have. That is how diff's were made. They all were locked. And the car's skipped and slid, That is why they have the spyder gears is so that you can go around corners. If you are wanting to have power to both sides. A posi is the only option. I don't know if anyone makes a Detroit Locker for our cars. But that would not help in the corners anyhow. The unlock when you go around a corner. And it is horrendous thing. It is really harse. It fools with your preload on the springs when it unlocks and when it locks up again. They are great for off road. But one pavement they suck. If you are cornering hard, and it unlocks. It just changed your line and may or may not make you lose control of the car.
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Bad Bent
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Facetious Educated Donkey

I think "It was a disasster." gets the message across very well. ;) :lol

This is why I ask people I see with bandages and getting around on crutches; what happened. It is good to know what not to do because you could wind up hurting yourself. :smackface

Note to self: Don't try Tranny spider gear welding. :deal
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Woodie
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Yes, the drag racers do this, better traction and less chance of breaking our glass differential. Makes it a bitch to steer, but if your offroad, you might not care. Quite a bit about it over on TeamSwift.

http://www.teamswift.net/viewforum.php?f=9
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heiner921
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i need maximum traction. car is for demo derby. no cornering needed. just forward and reverse.
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mcmancuso
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if you're breaking axles or differentials, I highly recommend cryo treatment :D It can triple or more increase the strength of steel in many cases , it also removes stress and microfracture potential :D
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heiner921
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they didnt break. passanger side popped out due to all the "geo frame rust" that is allong the frame horn. guess i cant say its rusty, cuz its so rusty that its gone lol. what is cyro treatment?
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mcmancuso
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http://www.cdpautomachine.com/ecatalog/cryo.html
more: http://www.nwcryo.com/motorsports_gears.html
slowly cooling to -300F, then bringing to room temp, then heating to 350F substantially improves the internal structure of the steel for all applications. And decreases wear 2-3X and protects against microfractures

Rockwell increased from 60.10 to 66.10.

Tensile strength increased from 86.0 to 244.46.

Bending strength increased from 86.0 to 244.46.

KCU (resiliency) increased from.668 to 1.18.

From the 1st article:
After cryogenic treatment, brake rotors do not distort (warp or twist) and therefore brake fade and chatter are eliminated. In addition, rotors typically perform in service at least twice as long and more typically three times longer.

Some info from the 2nd article:
First he tested them as procured. Then he chilled them to -120° F, tested them again, and then treated them at -317° F. In all cases the cold treatment improved wear resistance. The colder the treatment, the better. The -120° F (dry ice) treatment improved ratios ranging from 1.2 to 2 times, depending on the alloy. This is consistent with the Jassy findings. However, the deep cryogenic treatment at 317° F improved wear resistance by even greater ratios ranging from 20 to 6.6 times.
Edited by mcmancuso, Aug 25 2010, 12:42 PM.
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