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Old 11-11-2004, 09:45 AM   #8551
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Quote:
Originally posted by cartmen34
Yes. Please. somebody at HPI...please address this!!

The caster blocks are the only thing I REALLY don't like on my Pro 4. We should not have to grind, sand, dremel, or otherwise hand fit anything on a car of this caliber... or cost!
That issue has been address already by HPI. the newer released version 1.1 should not have that problem.
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Old 11-11-2004, 09:45 AM   #8552
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I've heard that HPI is working on the mold for the castor blocks and it should be released sometime soon. That came from my LHS. I know its a pain, and I sympathize with those of us who have to mod it. Peace.

Hey Zombies, any ETA on the blocks?
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Old 11-11-2004, 09:46 AM   #8553
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Quote:
Originally posted by rc-zombies
That issue has been address already by HPI. the newer released version 1.1 should not have that problem.
These have already been released to the masses?

dammit....missed another memo.

Is there a seperate part number for the new ones or was it a running change?
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Old 11-11-2004, 10:02 AM   #8554
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Quote:
Originally posted by cartmen34
These have already been released to the masses?

dammit....missed another memo.

Is there a seperate part number for the new ones or was it a running change?
Probably not.........but I am sure I will call them and send those old block back to them and have them to send me the new one...
That, HPI is very good on it, I have to give them credit.
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Old 11-11-2004, 12:42 PM   #8555
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Anyone know of anybody making Aluminum diff halves for the Pro4?
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Old 11-11-2004, 12:43 PM   #8556
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Not yet.
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Old 11-11-2004, 12:44 PM   #8557
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Quote:
Originally posted by punkboy
Anyone know of anybody making Aluminum diff halves for the Pro4?
I don't think anyone is.... the Delrin diffs haves are probably better and stronger than aluminum.
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Old 11-11-2004, 12:44 PM   #8558
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How are the delrin halves compared to the stock ones?
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Old 11-11-2004, 12:44 PM   #8559
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Quote:
Originally posted by punkboy
How are the delrin halves compared to the stock ones?
alot smoother and more durable.
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Old 11-11-2004, 12:45 PM   #8560
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My stock halves dont seem to be holding a good setting, thats why I ask...I had this same problem with the tc3, went to alum. halves on it, and had no problem...I have not tried anything with delrin yet
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Old 11-11-2004, 12:45 PM   #8561
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Quote:
Originally posted by rc-zombies
alot smoother and more durable.
cool, thanks
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Old 11-11-2004, 12:47 PM   #8562
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sound like you have a diff screw problem...several racers here have switched to using the TC3 diff spring assemply. you'll have to go back several pages to find the info.
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Old 11-11-2004, 12:55 PM   #8563
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I have been running my Pro 4 since it came out and I haven't really had any problems with my diffs coming loose at all apart from right at the start when the car was new. Since then I've been turning the lock nut upside down, so the nyloc part is facing inwards towards the diff. I don't know why or how this works, but it's seems to do for me, maybe I'm just lucky though...

Might be worth a try anyway...
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Old 11-11-2004, 01:02 PM   #8564
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cool, i'll look into the tc3 screw assembly...

It doesnt seem to be loosening any, it just seems like, I can keep tightening the screw, but the diff will be just as loose after 1 or 2 runs

I just built new ones sat. night to race with on sunday, and the car made it through the day without any problems with the diffs...

Im gonna run these a little while longer, then try the delrin halves...I already have them on hold with my lhs

Thanks for all your help
robbie
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Old 11-11-2004, 01:11 PM   #8565
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Quote:
Originally posted by punkboy
cool, i'll look into the tc3 screw assembly...

It doesnt seem to be loosening any, it just seems like, I can keep tightening the screw, but the diff will be just as loose after 1 or 2 runs

I just built new ones sat. night to race with on sunday, and the car made it through the day without any problems with the diffs...

Im gonna run these a little while longer, then try the delrin halves...I already have them on hold with my lhs

Thanks for all your help
robbie
I asked the similar question here on page 276

Hpi Pro 4

Take a look at the other racer's respond on the parts that you need from AE..........I didn't do the mod, cause on page 277, Erik Shauver (the PRO 4 Designer) answered this...

..........."The only item the team drivers address is to tack the M2 locknut into the holder with a bit of CA to keep it from “rocking?back and forth. Be careful not to get CA on the nylon portion of the nut. The newest ball diffs have had a bit of attention on the grinding of the spring ends with good effect. As long as you do the CA bit and “pre?compress the spring 4 or 5 times, we have no issues with the diffs......."
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