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Old 05-13-2008, 04:13 PM   #1921
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There is no way that the gear diff should be that much slower, I can understand .1 or .2 a lap if the conditions just didn't favor it, but 1 second is huge. I'd check all of the gears inside it to make sure they mesh alright, then make sure everything is in good condition externally, no bind in the bearings when it is installed, no bind on the dogbone blade, etc..
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Old 05-13-2008, 04:55 PM   #1922
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Originally Posted by kschu View Post
yyhayyim, mine nt 3pm FAST.. mine is 3PM syn...

if dx3r no problem then i might get it...it's look very cool n 4pk lookalike....
do u ever use gt esc on Brush Motor ?
I'll NEVER use a brushed motor or NIMH again

So my GT always run with Lipo & brushless motors
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Old 05-13-2008, 05:29 PM   #1923
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I'll NEVER use a brushed motor or NIMH again

So my GT always run with Lipo & brushless motors
lipo compare with nimh cell , which 1 more punch ? i know lipo can last longer than nimh cell n easier to maintain....
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Old 05-13-2008, 07:12 PM   #1924
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What are you guys using to stop the gear diff from leaking?

Rogier, I use the gear diff with my 13.5 and it works just as good as my ball diff. I agree with Randy it would be very hard to believe it is making you a whole second slower.
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Old 05-13-2008, 11:59 PM   #1925
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I haven't had leaking problems with my diff, but if you are, I would suggest cleaning everything off, putting everything back together just as the instructions say, but maybe use some ultra black silicon around the o-ring. Let the diff sit upright for about a day to let the silicon fully dry or it could get mixed in with the oil.
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Old 05-14-2008, 02:14 AM   #1926
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randy, wat shell u reconmend on high speed track ?
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Old 05-14-2008, 02:59 AM   #1927
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First thing I would do.. is take two of the gears out, to lower rotating mass. As far as lube viscosity, it depends on the track and traction. If the traction is medium, I would start with a heavier lube, like 5k or 7k.

Look at your belts and make sure there is no slippage....
Will the diff still work fine with 2 gears out??? Didn't know that! And 5k or 7k lube is pretty dense for a stock car setup isn't it?
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Old 05-14-2008, 05:17 AM   #1928
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gear diff definatly is not slower.

the orings are pretty tight on the axle shafts also. so some break in time is there. In other words after a few runs they get a bit smoother.

the single set of gears means the diff is looser with heavier oil and you have a slight reduction in rotating mass. reducing mass means you can accel faster and decell faster. This a is a very minor diff but this is a world were we put alloy screws in to remove small amounts of weight so it can make a difference.

If the gear diff feels like you are binding check the bearing eccentrics to make sure they are both on the same spot. the drive train should feel the same with the gear or ball.
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Old 05-14-2008, 10:18 AM   #1929
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randy, wat shell u reconmend on high speed track ?
Either the Mazda 6 or Mazdaspeed 6 from Protoform. The Mazdaspeed will be a bit more aggressive with less rear end traction.
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Old 05-14-2008, 10:45 AM   #1930
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Anyone in the US testing the new S400 top deck and bulkheads? Any news on release date?
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Old 05-14-2008, 09:22 PM   #1931
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Either the Mazda 6 or Mazdaspeed 6 from Protoform. The Mazdaspeed will be a bit more aggressive with less rear end traction.
how bout mazda 6 ? it's balance front n rear traction??
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Old 05-14-2008, 09:33 PM   #1932
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how bout mazda 6 ? it's balance front n rear traction??
Yes,,,its good a bit better rear traction so might be better in low/med traction situations
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Old 05-15-2008, 07:27 AM   #1933
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Anyone try the parma Type M body? I have one of those all painted up but have always used the Mazda 6 or Mazdaspeed 6.
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Old 05-15-2008, 09:29 AM   #1934
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Anyone try the parma Type M body? I have one of those all painted up but have always used the Mazda 6 or Mazdaspeed 6.
I haven't tried it on asphalt but at the Snowbirds it ran extremely aggressive, had traction rolling problems with it and had to go to the Mazda 6 to calm the car down.
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Old 05-15-2008, 11:01 AM   #1935
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Quote:
Originally Posted by Randy Caster View Post
I haven't tried it on asphalt but at the Snowbirds it ran extremely aggressive, had traction rolling problems with it and had to go to the Mazda 6 to calm the car down.
Thanks Randy, I'll have to try it in practice and see how it does.
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