New Axial 28RR Spec1

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axial .28 RR spec 1 update

:40: After little over 1/2 gallon of fuel I put a better pipe on it and it made a difference rite away in sound, it is much quiter than stock hpi 25 pipe. It made alot more power, I had it out today I'm almost finished with one gallon `of gas and the yard seems smaller since this thing broke in, It is definitly the fastest engine that has been in this truck (all fun gear set up 52/15 three shoe ). engines that have been in it: hpi .21 / hpi.25 / hpi4.6 / picco .26 / ktm .24
:rock: I am like n it alot. Had to replace pinion gear in diff. twice in last week at no fault to engine it only happens when I'm jumping. This time I hardened the pinion gear before I put it back in. Lets see how long this one lasts. Its only the pinion that goes so far, I am running the four gear bevel.
:10:
 
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I was reading something about this motor, It has an optional turbo head available. what are the mechanics behind this ? Why wouldnt they just put that head on it to increase performance numbers.
 
:40: After little over 1/2 gallon of fuel I put a better pipe on it and it made a difference rite away in sound, it is much quiter than stock hpi 25 pipe. It made alot more power, I had it out today I'm almost finished with one gallon `of gas and the yard seems smaller since this thing broke in, It is definitly the fastest engine that has been in this truck (all fun gear set up 52/15 three shoe ). engines that have been in it: hpi .21 / hpi.25 / hpi4.6 / picco .26 / ktm .24
:rock: I am like n it alot. Had to replace pinion gear in diff. twice in last week at no fault to engine it only happens when I'm jumping. This time I hardened the pinion gear before I put it back in. Lets see how long this one lasts. Its only the pinion that goes so far, I am running the four gear bevel.
:10:



Have you shimmed the diffs??? try shimming the pinion a little
I have had the same problem.. might just wanna try and buy a complete diff
like this http://cgi.ebay.com/NEW-HPI-Savage-...ryZ34063QQssPageNameZWDVWQQrdZ1QQcmdZViewItem


better yet upgrade to cen diffs
 

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