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Old 06-26-2005, 12:41 PM
  #11881  
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Which part breaks the most? One answser for just normal wear and tear, and one for crashes, please.
-Josh
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Old 06-26-2005, 03:42 PM
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Which part breaks the most? One answser for just normal wear and tear, and one for crashes, please.
-Josh
Front gears when running a one-way tend to go easily for me. I've replaced three sets. I've gotten a lot of laps down with mine and I've gone through 3 sets of front gears, one titanium front axel, one drive cup, and one wheel bearing. That also represents three major crashes though too, so I can't complain.

Nothing appears to be "wearing out" however.
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Old 06-26-2005, 03:46 PM
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Sweet; Sounds like a really tough bullet. Any other responses? Thanks a lot!
-Josh
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Old 06-26-2005, 04:15 PM
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the only thing that i have had break that wasent in the drive train was a ball stud
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Old 06-26-2005, 05:09 PM
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Ok Im gonna change to the Hara input shaft instead.
Can someone tell me the part numbers for all the bit ill need for the conversion? Im thinking ill need gears and e clips too??

Thanks!!
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Old 06-26-2005, 06:54 PM
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one peice lite weight input shaft set part # 75179

bevel gear set part #73501 make it is version 1.1

no e clips needed gear is held on with screw only 1 shim used on rear shaft none on front it all comes with the shaft set
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Old 06-26-2005, 08:27 PM
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I hear people using different tooth#'s on their spur gear rather than the stock 98t...i currently changes mine to 100t...does this really make a differece? As long as the final gear ratio is the same no difference will be made right?
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Old 06-26-2005, 09:28 PM
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Thanks for your help guys.
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Old 06-26-2005, 09:38 PM
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what do you do to perform the upper deck mod, and why is it done?
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Old 06-26-2005, 10:07 PM
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you ream the 2 bigger holes on the upper deck...well let me just show a picture


if you can see the two holes go deeper than the rest cause the holes are reamed. This is to prevent less tweak.
Attached Thumbnails Hpi Pro 4-img_0922.jpg   Hpi Pro 4-img_0923.jpg  
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Old 06-26-2005, 10:22 PM
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so you only ream the 2 behind the spur, and then the 2 just in front of the steering rack? How much do I need to ream out?
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Old 06-26-2005, 10:27 PM
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you need to get 4 button head screws to replace the csk screws for those locations, then using a drill bit which is slightly larger than the button head drill out the holes

and yes, the holes for the long screws running into the diff housings
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Old 06-26-2005, 10:47 PM
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I assume it is the same size screws in the holes, just the button head type like you said. Do you know the part number for the screws by chance?

Also, do I want to completely drill out the holes in the deck, or just enough to let the button heads sink into the top deck?
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Old 06-26-2005, 10:57 PM
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in mine the screws aren't even touching the carbon fiber when all the way down.
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Old 06-26-2005, 11:04 PM
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ok so I just completely bore out the holes so the screws it sounds like are just clearing the top deck and only screwing into the diff cases.

What is the size screw I need to do this with and do you have the part #

Thanks everyone for your replies.
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