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-   -   Crunching sound when full throttle & brake hard? (https://www.rc-monster.com/forum/showthread.php?t=22950)

superek4 08.13.2009 12:27 PM

Crunching sound when full throttle & brake hard?
 
hi,

i just convert my friend's Losi8T Version 1 using Losi conversion.

Test run the car it gave out a crunching sound when full throttle & hard brake.

When low speed its ok. May I know what went wrong before I strip the car? The race is this sun & I still have another car to test?

Pls help thxs!

brushlessboy16 08.13.2009 01:04 PM

spelling and grammar help.

check your gear mesh

I would say check the diffs but since it is happening under acceleration AND braking- it would mean that both diffs are not shimmed correctly-very unlikely.


Check your main motor gear mesh.

superek4 08.13.2009 01:08 PM

sorry for my spelling & grammar i use too much Singlish(short cut English in Singapore) lol, thx alot

MetalMan 08.13.2009 01:48 PM

Also, check to see if shimming the center diff bevel gears will help.

wallot 08.13.2009 01:58 PM

most likely stripped pinion/bevel gear with metal pieces flying in the diff case. did happen to me in my mugen (diff was over a year old).

cavy 08.14.2009 11:13 AM

Wow samething with mine. mmm 2200kv Only at acclerating an braking i checked diffs an there all good. No metal flakes. The local hobby shop said thats normal wit electric conversion. Not sure that noise is scary.

superek4 08.14.2009 11:46 AM

What car are you driving? Losi8T is plastic spur should not have sound.

Mine CRT is metal gear but not crunching sound.

gtxracer 08.14.2009 07:02 PM

Spur gear chipping off teeth, if it's plastic. Otherwise you need to tear apart your drivetrain and find the weak link.

cavy 08.14.2009 09:42 PM

yeah its a metal spur. crap i guess it's time to tear it apart then

brushlessboy16 08.14.2009 09:46 PM

the quicker way to do this is to hold wot and drop the truck onto carpet. that will find the weak point really quicklyy

gtxracer 08.14.2009 09:59 PM

lol ^

Please don't try that.


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