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Old 04-13-2004, 08:38 PM   #5836
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mo: That's what I did, I slid the spacer as far to the side as it could go, but it still seemed to pinch the gray belt. It seemed like there was a significant amount of resistance in moving the drivetrain.
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Old 04-13-2004, 08:53 PM   #5837
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Hey Shane....Something has to be assembled wrong then Check the front diff because I put that in backwards the other day and that kinda did the same thing
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Old 04-13-2004, 09:01 PM   #5838
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Also, if you have all the belt tensioners on, that could be causing a bit more friction too. You only really need to run the front lower one.
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Old 04-13-2004, 09:12 PM   #5839
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Nah, it was all put together correctly. Triple checked for accuracy.

The reason I was concerned about the rear diff/pulley system is because before I ever even put the diff and belt into the car, the belt was getting pinched by that spacer. As far as I can tell, everything else in the car is super free, it's just that one spot. I tested just about everything else with the belt detached. I figured maybe it just took a little break in.

I don't actually have the car in front of me, it's packed up for photos, I'll have a chance to run it and wrench on it sometime next week.
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Old 04-13-2004, 09:35 PM   #5840
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Quote:
Originally posted by PW
Hey Shane....Something has to be assembled wrong then Check the front diff because I put that in backwards the other day and that kinda did the same thing
That's too bad. I'm almost ready for action this weekend.
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Old 04-14-2004, 12:42 AM   #5841
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If you take the spacer off the pulley and lightly sand both sides on a flat surface and then champher(sp??) both sides you will have plenty of clearence.

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Old 04-14-2004, 01:04 AM   #5842
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AdrianM - it's true that the layshaft of the car with lower internal ratio has to rotate less (that's what I was talking about), but this does not mean the belt speed is lower Layshaft rotates less, but with a bigger pulley, making belt speed exactly the same, no matter how you look at it.

Think about it the other way: how to calculate belt speed from car speed. As you can probably see, layshaft pulley size does not have any effect here whatsoever. It only depends on diameter of the tire and diameter of the diff pulley. If these stay the same, the belt speed (in relation to car speed) stays the same.
V(belt)=V(car)*D(diff_pulley)/D(wheel)
So, the only way to lower belt speed is to install smaller diff pulley, bigger wheels or just drive slower. The latter is probably not a very popular idea Layshaft pulley size only defines layshaft rotational speed, not belt speed.

Feel free to ask Phil Booth, if you have hard time believing me
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Old 04-14-2004, 03:51 AM   #5843
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Hi!

Do Schmacher US have the Mi2 S1 and Mi2 Carbon in stock?

/AN
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Old 04-14-2004, 06:09 AM   #5844
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I think Olev is correct about the belt speed.

The way i think about it is if you push the car the belts will be rotating at a given speed. If you change the trans ratio and then push the car at the same speed, the belts will still be rotating at the same speed, but the layshaft speed and hence spur gear speed will have changed.

Personally i tested it out, and always prefered teh 20t pully!!!
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Old 04-14-2004, 08:50 AM   #5845
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An....Schumacher USA has the Carbon Mi2 in stock, but not the S1.

Shane....Try taking out the center flange as well. Also check to see if the belt is defective (cut crooked).

Shocks
I have tested the Tamiya shocks and Schumacher shocks back to back and haven't seen any difference when running rubber tire on asphalt. However, most drivers choose the Tamiya shocks because they are basicly fool proof when building and other springs fit them well...I still use the Schumacher shocks outdoor

The other reason you see the Tamiya shocks on our cars is you can run the carpet towers all the time
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Old 04-14-2004, 09:03 AM   #5846
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Hey PW- aren't the new Scuie shocks supposed to take care of all those problems when they come out? They'll be like the best of both worlds?

Mo? On the Schumacher thread? Somebody look out the window and see if there are airborn swine!!!!
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Old 04-14-2004, 09:49 AM   #5847
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Does anyone know if the Mission TiR Titamium screw kit will fit the Mi2? Is there a Mi2 kit available?
Thanks
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Old 04-14-2004, 10:10 AM   #5848
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Does anyone know what the overall length of the Schumacher shocks should be to run the short shock towers?
Thanks
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Old 04-14-2004, 10:35 AM   #5849
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I believe my shocks are about 64mm.
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Old 04-14-2004, 10:40 AM   #5850
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mo, PW & SchuMi2: Thanks for the ideas, as soon as I get the car back I will check that stuff out.

I rotated the front and rear diffs in the car without the belts attached and they were quite free -- in fact the stock bearings on this car seemed better right out of the box than any others I've tried.
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