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Old 12-20-2003, 01:10 AM   #1
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Unhappy Hello.

I'm new to the scene and I have a question. I just finished building my first HPI RS4 3 SS and Iím having a problem during the break in process. I have done about 5 moving break in runs and my car will still barely move. It seems that the transmission is having a hard time catching. I can't figure out what is wrong so some help would be greatly appreciated! Thanks in advance!
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Old 12-20-2003, 01:40 AM   #2
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Nobody huh?
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Old 12-20-2003, 03:29 AM   #3
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. . . . well, not in 30 minutes, anyway.
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Old 12-20-2003, 05:19 PM   #4
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Sounds like it may be the clutch, is it revving up but just not going anywhere?

I'm not up on HPI's, I'm sure someone will reply that is.
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Old 12-20-2003, 05:45 PM   #5
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if your engine is running very rich for break in then sometimes its not up to the rpm where the 2nd speed would catch. once its well broken in and the engine is properly tuned you can start tuning your clutch as well as the 2 speed.

if you find the 2nd gear on the 2 speed isnt engaging at full throttle, then the spring preload in the tranny is set too tight. slowing loosen the allen for the 2 speed to shift earlier.

usually the stock clutches engage just fine. but if you do need to change it so that it engages earlier, then either change the retainer spring to a lighter one or start removing material on the clutch shoes. for the latter, make sure you remove the same amount of material on both shoes and that you go by small increments.
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Old 12-21-2003, 01:01 AM   #6
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Quote:
Originally posted by icon
...or start removing material on the clutch shoes. for the latter, make sure you remove the same amount of material on both shoes and that you go by small increments.
Correct me if I'm wrong, but doesn't removing material from the clutch make it lighter therefore making it engage earlier .
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Old 12-21-2003, 01:24 AM   #7
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Quote:
Originally posted by icon
if your engine is running very rich for break in then sometimes its not up to the rpm where the 2nd speed would catch. once its well broken in and the engine is properly tuned you can start tuning your clutch as well as the 2 speed.

if you find the 2nd gear on the 2 speed isnt engaging at full throttle, then the spring preload in the tranny is set too tight. slowing loosen the allen for the 2 speed to shift earlier.

usually the stock clutches engage just fine. but if you do need to change it so that it engages earlier, then either change the retainer spring to a lighter one or start removing material on the clutch shoes. for the latter, make sure you remove the same amount of material on both shoes and that you go by small increments.
Thanks man.
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Old 12-21-2003, 02:10 AM   #8
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Quote:
Originally posted by R J M
Correct me if I'm wrong, but doesn't removing material from the clutch make it lighter therefore making it engage earlier .
remove material from shoes means make the shoes lighter and that you need higher RPM to make the clutch engage.
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Old 12-21-2003, 05:02 AM   #9
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Quote:
Originally posted by Manticore
remove material from shoes means make the shoes lighter and that you need higher RPM to make the clutch engage.
Yeah... then once I read the post again I realised that might be what he wants to do .
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