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Old 08-03-2004, 09:24 AM
  #6631  
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Default Just wanted to add....

Guys;

That I am now running a Front diff (very tight) and did not have not one single part breakage all weekend.

I also now have the updated bevel gears (v.1.1), but have yet the need to install them in the car.
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Old 08-03-2004, 09:33 AM
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how come the diff keep comming loose..or this is normal?

I did tighten almost every run.
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Old 08-03-2004, 09:34 AM
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I just called HPI and they said that part number 73501 are the old bevel gears for right now. Hobby shops should be in the process of sending those parts back to HPI for replacement of the new parts. I still haven't needed the new bevel gears yet though.
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Old 08-03-2004, 09:35 AM
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Originally posted by X-Garage
how come the diff keep comming loose..or this is normal?

I did tighten almost every run.
You need to read back a few pages. There is a fix for that. It's on page 217.
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Old 08-03-2004, 10:21 AM
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As far as I was aware, the same part number is being used for the version 1 and version 1.1 gears. The 1.1 gears look slightly different, with a lot more material behind the gears, and the small gear has some extra plastic at the back of the gear.
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Old 08-03-2004, 10:28 AM
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The HPI guy didn't know whether the new parts would be under a different part number once they started shipping.
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Old 08-03-2004, 10:40 AM
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Originally posted by brushless
You need to read back a few pages. There is a fix for that. It's on page 217.
thanks!
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Old 08-03-2004, 12:13 PM
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do they still sell the old gears anywhere, what am i gonna do with my prp brace =(
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Old 08-03-2004, 12:17 PM
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Originally posted by cHckbOY5
do they still sell the old gears anywhere, what am i gonna do with my prp brace =(
I've got several handfuls... I can sell you a couple...
I have the PRP brace as well...the way it's working.... I may not have to replace the gears for a very long time...
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Old 08-03-2004, 01:03 PM
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Default PRO4 RACING SHOCK SPRING

Updated list:

Spring Rate gF/mm (lb/in)
273 (15.3) #6542 Blue
302 (16.9) #6543 Silver
320 (18.0) #6548 Pink
340 (19.0) #6544 Gold
363 (20.3) #6545 White
388 (21.7) #6546 Yellow
400 (22.4) #6547 Red
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Old 08-03-2004, 01:11 PM
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Default Possible diff adjustment

FYI: I found that treating the Pro4 diff like a tc3 diff, compressing the spring several times before building and actually tightening it down fully they backing the screw out 1/2 turn has had excellent results in both my 4's. When the diff is new it needs to be run in a pack or two, to seat everything, then readjusted the 1/2 turn out method. I havent had to touch mine after I adjusted them this way. This may be helpful to some people who would rather try a set number of turns out, before giving up and switching out the diff screw, nuts ect.
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Old 08-03-2004, 05:18 PM
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Default PRO 4 Diffs

Just ordered my new gears this afternoon. Thanks HPI! Thats the HPI we are use to. Anyways my diffs quit lossening up finally. They must have broke in. Took nearly 3 months of racing every weekend. They have been fine for the last 2 months now.
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Old 08-03-2004, 05:29 PM
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Default Re: PRO4 RACING SHOCK SPRING

Thanks for this list RC-Z
I just got the blue white and yellows from Tower, they dont have the red ones in stock till later this month, and no mention of the pink one??

Originally posted by rc-zombies
Updated list:

Spring Rate gF/mm (lb/in)
273 (15.3) #6542 Blue
302 (16.9) #6543 Silver
320 (18.0) #6548 Pink
340 (19.0) #6544 Gold
363 (20.3) #6545 White
388 (21.7) #6546 Yellow
400 (22.4) #6547 Red
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Old 08-03-2004, 05:32 PM
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Default Re: Re: PRO4 RACING SHOCK SPRING

Originally posted by azenis
Thanks for this list RC-Z
I just got the blue white and yellows from Tower, they dont have the red ones in stock till later this month, and no mention of the pink one??
the pinks were just releases..so Tower should have them sooner or later....
I have the red and pink coming from R10...
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Old 08-03-2004, 05:52 PM
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has anyone have tried both PRP and BMI chassis?
i'm looking into getting a set for carpet but not sure whether or not HPI to has their set released yet. which would be better?

any input would be helpful.

Thanks in advance!
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