paper clutch LSD!! - Page 2

xxspeednplayaxx · #16 02-02-2004, 04:48 PM

nice job, i cut out 4 peices of paper that are the same size/shape as the big gears, and put the paper disks between each gear (so the layout is paper, big gear, paper, spider gears, paper, big gear, paper) i also added some vaseline, and even though my car isnt runnin (waiting on parts) the gear feels stuff but will slip when forced, and i havent noticed any wear yet ..

spitty12 · #17 02-03-2004, 01:27 PM

by far the best option i've found is packing it with grease. The hole punches are not very smooth and didn't have even slippage. Before this idea I was cutting circles out of paper(lol, the hard way) to make lsd's and they never felt right.

I went to the bike shop and he gave me some thick white grease that I packed into the differntial tightly. This works beautifully for drag and turning. These cars are very light so the resistance in the diff needs to be low and this works perfectly.

spinitsidewayz! · #18 02-03-2004, 11:40 PM

grease sounds like a great idea. sounds kinda messy tho. not really a clutch type but if it works, nice! what kind of grease was it? do you think gel or another substance similar would work? i thought of this b4 but i never really thought it would work. i should give it a try.

back to the clutch idea. i soak the paper in baby oil. gives it a little more consistency. the paper really has 2 roles. it just pushes the side plates against the sides of the diff and provides a surface for the plate to slide against. in real cars clutch lsd's bang cluck and grind in low speed turns. not too pretty sounding. in xmods it sounds the same way. except its the sound of paper sliding against plastic when i wear in my diff.

right now i am running the 2nd type with 4 punches on each side. you can also adjust the diff by putting in more or less punches or just by loosening or tightening the screws . anyways. here are some pics(diagrams) of the lsd's i made. and just by inserting hole punches.

spitty12 · #19 02-04-2004, 01:22 AM

Not sure what kind of grease it was but it was in a tub and was white. The guy is a fellow car guy so I told him that I wanted to pack the diff to make an lsd and he put some in a plastic baggy and gave it to me. It wasn't gel but it was maybe lithium grease. An auto parts store should also be able to give a good recommendation for a product.

The only bad is that it's not adjustable like a paper one but it will not degrade over time.

EDITE: The clutch type you made should slip when power is going to the rear wheels causing your power to go no where and just make noise. If it is tight enough to make all the power reach the rear wheels then it would be so tight it wouldn't slip at all around corners. I think that's how it would work but let me know what experience told you.

The grease type is very loose and I thouhgt it wouldn't provide enough resistance but it turned out to be perfect.

spinitsidewayz! · #20 02-04-2004, 10:54 PM

haha i jacked some microscope coverslips from science class today. punched them and stuck them in my diff. you only need 2 per side. they work pretty fine so far. i have my diffs set up so i can easily tune them for drift or grip. just remove the left right wheel and slightly turn the screws turning the diff so you can get to each screw. my rear tires are toast now and ive already completely broken a c-cup. good thing i have replacement drivetrain parts.

spinitsidewayz! · #21 02-07-2004, 12:23 AM

Quote:

Originally posted by spitty12

EDITE: The clutch type you made should slip when power is going to the rear wheels causing your power to go no where and just make noise. If it is tight enough to make all the power reach the rear wheels then it would be so tight it wouldn't slip at all around corners. I think that's how it would work but let me know what experience told you.

with the 1st type it was like that. etheir power was wasted slipping the diff or the diff was too tight causing it to be locked. i started getting frustrated but the locked diff let me slide around without diffing so i was happy so far. and then i went to office depot and found a nice single hole punch (1/4th inch) i found that the punches moved around too much for the 1st one. then i compared the size to the space between the 3 center gears. perfect fit! so i put together a 2nd type. the 2nd type is much more effective as you can go with lower amounts of lock and not waste power. lower amounts of lock also make it act less erratic because of the roughness of the paper. i found plastic not to be a good material because after a while the plastic binds against each other and ends up acting like paper. my friend gave me some washers from a 4wd tamiya and they are the exact size as the smaller punches. i stuck 1 on each side and put lubricant in the diff. i tightened the diff to a reasonable lock and it works much better then the paper or plastic. so far im happy with it. much more consistant drifts and more percise gripping

oh yeah the little ring on the gear side on the side gears are wearing out. theyre ending up flat but they add more surface area. i think after a while i might need a new diff. to mess with. yeah and on another note these diffs act more like 2.0 way diffs.

spitty12 · #22 02-07-2004, 02:37 AM

If you are ever desperate for an extra diff i might be able to help you out. I've got 3 diffs and one running car

spinitsidewayz! · #23 02-07-2004, 10:00 PM

thanks for the offer but i just got 2 more extra diffs from friends that were so eager to get rid of their stock parts.

i was so bored today i took 1 of them and stuffed toothpaste in it. i didnt have any grease lying around anywhere so i thot toothpaste would be worth a try. it works. not enuff lock for my liking but it was nice and smooth. after awhile of running it toothpaste started oozing out of the diff....

well at least it smells minty clean now