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Hpi Pro 4

Old 03-28-2005, 03:18 AM
  #10621  
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Originally posted by Rene Brons
I have a alu servo/transponder holder.
Does anyone know where I can buy the alu "box" that can contain the transponder and can be attached to the transponder holder.
Xenon Racing makes the Alloy trasponder holder... also OVA makes a lighter Durlin version..
Speedtech should be able to get the Xenon version if you hit them up since they are a Xenon Dealer
-Dave
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Old 03-28-2005, 03:38 AM
  #10622  
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Originally posted by yellow15
a quick question: how often do you guys rebuild your diff? i know it depends on how you drive your car but can someone give me a rough idea? like every month? every year? I run about 10 packs a week on average and using stock or silver can on a outdoor track.

and do you just replace that metal plate or you have to replace the diff balls as well when rebuild?
i generally clean out the car every week. but thats not a rebuild job.

every one month would be good but if it is not to serious racing every 2 or 3 months. i try to replace the diff balls and diff plates every half year just to keep it fresh and in good working order.
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Old 03-28-2005, 03:06 PM
  #10623  
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Does anyone know how much weight could be saved by going with the bearing adapters and using the smaller bearings?
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Old 03-28-2005, 03:14 PM
  #10624  
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Originally posted by brushless
Does anyone know how much weight could be saved by going with the bearing adapters and using the smaller bearings?
zero...
the smaller bearings are fragile...you'll end up replacing them more often than not...
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Old 03-28-2005, 03:22 PM
  #10625  
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has anyone encountered the problem where the steering is bound up by the steering hubs?

the only way i can loosen the movement left/right steering is by unscrewing the top ball stud and bottom screw.

Thanks in advance!
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Old 03-28-2005, 03:31 PM
  #10626  
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Originally posted by racer
has anyone encountered the problem where the steering is bound up by the steering hubs?

the only way i can loosen the movement left/right steering is by unscrewing the top ball stud and bottom screw.

Thanks in advance!
It sounds like your over tightening the screws. tighten the ballstud screw and bottom screw until they are just snug then back off about 1/4 turn.
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Old 03-28-2005, 03:34 PM
  #10627  
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Where do you get you novak speedos turned black?
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Old 03-28-2005, 03:39 PM
  #10628  
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Originally posted by mtveten
It sounds like your over tightening the screws. tighten the ballstud screw and bottom screw until they are just snug then back off about 1/4 turn.
Thanks, i've checked the manual again and that's what it said to do.

Thanks for the quick reply
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Old 03-28-2005, 03:42 PM
  #10629  
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Originally posted by Scho
Where do you get you novak speedos turned black?
GTX is impossible to dye..

the GT7 is dyeable with Rit fabric dyes.
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Old 03-28-2005, 04:40 PM
  #10630  
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Racer...I hear your problem....I solved it by filing the inside of the C hub until the steering was free.If you do as the book says the steering block still binds in the C hub.
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Old 03-28-2005, 04:49 PM
  #10631  
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Originally posted by racer
has anyone encountered the problem where the steering is bound up by the steering hubs?

the only way i can loosen the movement left/right steering is by unscrewing the top ball stud and bottom screw.

Thanks in advance!
The problem is the chubs and knuckles do not fit perfectly...they have some binding. Just sand the top of the knuckle a little and it'll free up nicely.

This was noted by HPI and you could probably read about it waaaay back on this forum. At this point the newer parts may have a running change but I'm not sure.
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Old 03-28-2005, 04:50 PM
  #10632  
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Barger, Nexus...

Thanks for the help!
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Old 03-29-2005, 03:27 AM
  #10633  
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what gearing would be recomended for a trinity Monster Horsepower Pro Stock Motor?

its a reasonably tight track....
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Old 03-29-2005, 08:17 AM
  #10634  
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Originally posted by moot
what gearing would be recomended for a trinity Monster Horsepower Pro Stock Motor?

its a reasonably tight track....
maybe start around 7 - 7.2 final drive...
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Old 03-30-2005, 08:04 AM
  #10635  
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Default Carbon fiber parts

Ok, I have 2 sheets of carbon fiber one 1/16" (1.6mm) and one 1/8" (3.1mm). I am thinking about making some custom parts for my Pro4. Are there any parts that are currently available but need to be updated or changed to perform better. Also is there anything that is not available that someone would like to see made. All the parts I make will be CAD drawn and CNC cut. If anyone has any good Ideas for some parts and I end up using your Idea I will be happy to send you a few free parts.

Please let me know what everyone thinks.

Chris
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