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Old 02-26-2002, 06:24 PM   #1231
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Quote:
Originally posted by Modena AL
Can someone explain to me the physics behind how something like this, out of ALL things, could break
I don't think you broke it.
I heard about the 'graphite munching rat'.

Keep it locked since there're lots of food in your car.
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Old 02-26-2002, 06:52 PM   #1232
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I agree on 'less caster (more vertical) equals more aggresive steering' part.

Think about Harley-Davidson motorcycles.
They have lots of caster angle (laid back) in front, so slow steering.

And if you look at any of superbikes which have steep caster angle (near vertical), they turn really fast at corners.

I tried Pit Shimizu 27, JB inserts yellow on yokomo wheels on hard bite, smooth, asphalt track.
Wow this thing really hooks up.

I broke my rear hub carrier at first corner from the straight.
Even before I reallized that I had to adjust to speed difference.
I was like 'Wow' until I realized that my car was doing donuts and somebody called 'rear hub'.

They have more air gap.
I was worried because JB inserts looked pretty cheapy material and tires' surface was narrower with more rounded edge at both sides. (more cornering grip?) I guess almost like yokomos.
The combination is really light.

I looked at sorex 36r with hpi green, proline. In center line of the tire surface is risen slightly. And only inner section has burning marks from braking.
Camber is about 2.0 all around.

Funny thing is pit shimizu tire surface is real flat and burning marks are along the exact center line.

Should I change the camber according to tires?
Seems like that way.
Or maybe proline wheels are too soft?

They seemed to give more cornering traction.
I couldn't try more.
I wonder how take off tires would perform.
Sorex tires really last long though.

BTW, yokomo wheels are really stiffer than pro lines.
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Old 02-26-2002, 07:11 PM   #1233
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A good example of what Dennis is talking about is foam tire racing.

The cars develop so much cornering power that you can drive really hard into the turn. More caster seems to give the car more entrance steering. I suppose it does, but mostly your getting more _high speed_ steering. On rubber tires, since you have less grip and entrance speeds tend to be lower, less caster will seem to be better for turn in.

I suppose that you could talk about all the forces on the car and everything, and there is a place for that, but suffice it to say Dennis is "more right" in my experience. More caster = more high speed, less caster = more low speed.
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Old 02-26-2002, 08:35 PM   #1234
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That makes sence Dennis. I agree it does different things for different people.

Mr.Mr4,

The best thing to do is to try things for yourself and see what they do for YOU. And write everything down!!!
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Old 02-26-2002, 09:52 PM   #1235
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I`m doing a little wrenching tonite and I need your opinions on balancing the car....
I heard I sould put the battery screw`s on the shock tower`s and use fishing line to suppend the car .
I guess this would work for checkin the weight between the left & right side.
What do yea think??? Thanks
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Old 02-26-2002, 10:00 PM   #1236
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unmodified TC3;s are always heavier on the battery side. I confirmed this with an oval racer's dual scale set up. Scales are the best way to set up, but hard to get perfectly even.
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Old 02-26-2002, 10:28 PM   #1237
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You are correct sir!

I've done the fishing line routine and the right side of the TC3 is about 2.5 ounces lighter than the right side.

The dummy transponders are about a 1/2 ounce, so I added 2 ounces just outside the motor.

You'll definitely feel the car run slower, but you will notice that the balance when turning.

YJ
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Old 02-26-2002, 11:44 PM   #1238
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Thanks dudes...I will do it..

Now, one more question...

I`m trying to free up the drive train....
First thing is I`m doing is remove one side of the bearing shields ,clean & relube with pro-long...

Next thing , I hear you can do a little grinding on the diff cases.....

Where do I grind ?
Also , what else could you recommend doing to remove fiction from the drivetrain...
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Old 02-27-2002, 12:15 AM   #1239
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Dude:

Before you start grindin' stuff and poppin' shields out, you might try a couple things first:

Loosen the screws that hold the tranny cases on - just a little. Heard about this, but it didn't have much effect on my TC3.

Use motor or break cleaner with a bearing blaster, then lube the bearings in the car with Ballistol multipurpose lube. Its one of those "cleans and protects" lubricants. This freed up my drive train well enough that I'm not going to pursue removing the shields.

YJ
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Old 02-27-2002, 08:53 AM   #1240
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Thanks , but my car was spinning free already,I`m tryin to improve it . I want it to spin even better than stock....
I heard there was something to grind on the diff cases ...

Wonder what ???
I do know you can inlarge the inboard bearin case so the it is`nt as tight when you assemble....
You guys know of anything else I can do ??
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Old 02-27-2002, 09:03 AM   #1241
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loosening the transmission screws is a very bad idea on the tc3.
You wouldn't loosen the shock tower screws would you?
And what's the shock tower on the tc3 attached to?
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Old 02-27-2002, 12:54 PM   #1242
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With the diff assembled and bearings attached, you should be able to set it on the diff case and it should drop in. If not, sand/dremel/cut away a LITTLE bit of material and try again. Too much will create slop...that's bad.

Remove the diff, hold the upper diff case half and drop the diff into it. Same thing. Should just drop right in.

To test for a SUPER free drivetrain (and this only works with a one way front diff), set the car on a stand and back the motor off so it's not touching the diff gear. Now, spin the front wheels. If the drivetrain is SUPER free, the shaft will spin and the rear wheels will start spinning with the fronts. If the drivetrain is NOT SUPER free, only the front wheels will spin.

This is the true test...

Have fun with this one....
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Old 02-27-2002, 02:20 PM   #1243
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Quote:
Originally posted by TPhalen

To test for a SUPER free drivetrain (and this only works with a one way front diff), set the car on a stand and back the motor off so it's not touching the diff gear. Now, spin the front wheels. If the drivetrain is SUPER free, the shaft will spin and the rear wheels will start spinning with the fronts. If the drivetrain is NOT SUPER free, only the front wheels will spin.

This is the true test...

Have fun with this one....
Tony,
Now you did it. Thousands of TC3 owners will be wrenching on their cars to try to achieve this holy grail of TC3 tranny efficiency. I tried for many many hours never to achieve such perfection and ended up with a headache instead.

So when are you hading back to so-cal. I haven't been spanked by you in a while
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Old 02-27-2002, 04:38 PM   #1244
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Linger wants a spanking? I'll be back with my TC3 equipt with front and rear oneway diffs
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Old 02-27-2002, 05:01 PM   #1245
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TPhalen: what tool do you use to remove the material around the bearing in the gear box?
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