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HPI Cup Racer 1M

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05-06-2009, 01:15 PM

#421

redbones

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Yeah, if you built a TB evo or TB03, shimming helps with some of the noise from the bevel gears.

05-06-2009, 04:57 PM

#422

kingcobra69

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well I overtightened the bolt in the center of the rear diff and snapped it

be careful cause it's easy to do)

05-06-2009, 06:15 PM

#423

Sydewynder

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Quote:

Originally Posted by DarthRacer

Thanks for the tips.

I received a bad part in my kit, PN 86194. There were no notches in it to match up with the bevel gear on the opposite side, and if I tightened it down the assembly was hard to rotate. HPI is sending a replacement but I have to wait 5 business days.

. Anyone else get bad or defective parts?

Defective parts? Yes. Bent ball diff screw. Front diff ring gear had chunks of metal missing in the teeth. Flashing in the metal gears.

Per HPI the diff screw isn't available til the end of the month. Guess I won't be running this car anytime soon.

05-06-2009, 10:31 PM

#424

rai913

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Just finished my cup racer and the body is really detailed. Still waiting for the 510. I did encounter a motor plate screw hole that was too big, I just put a bigger screw in. Hope to run it soon waiting for esc and 17.5.

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05-06-2009, 11:52 PM

#425

LoongJess

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i change the diff front and locker put at back because i want do it for drifting will it work? i havent test witing for motor

05-07-2009, 12:54 AM

#426

tadashi

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Quote:

Originally Posted by Sydewynder

You should be able to use the diff screw from a Pro 4.

05-07-2009, 02:47 AM

#427

Sydewynder

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Quote:

Originally Posted by tadashi

You should be able to use the diff screw from a Pro 4.

Unfortunately the Pro 4 is 25mm long and the cup racer is 32mm long. Oh well thanks anyway.

05-07-2009, 03:58 AM

#428

Bodywerx_rc

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Quote:

Originally Posted by rai913

What color is that? Copper?

Looks great. My paint sould arrive next week and then I can get mine finished up.

05-07-2009, 04:30 AM

#429

k_bojar

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Quote:

Originally Posted by MikeR

Yes, complete PRO4 front spool and bevel gear for the front. It is a few mm narrower than the Cup Racer diff so the dog bones aren't as deep into it but because the spool is metal it seems to have plenty to hold the dog bones in. For the rear I'm using the stock diff outdrive but am using the PRO4 bevel gear. The PRO4 bevel gears are very close tolerance against the pinion gear and diff cases but I've put 3 packs through my car and it all is running very smooth, if not better each run.

Hey Mike - how's the mods holding up??

I got the parts I need to do this to mine on the way