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Old 09-17-2004, 06:52 PM   #7531
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changing the oil is alot faster than changing your piston if you have other wt. oils. If go with a smaller hole just don't use heavy wt. oil.
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Old 09-18-2004, 05:33 PM   #7532
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I guess i must have been even more tired than i thought when i posted. Yeah, 5wt is a lot closer to what the difference is. That being said, a lot of the setup sheets look like #3 pistons most times (1.1mm??)

I don't know what this really means. Most of the time, the logic seems to be to use the piston to keep you in a usable range of oils. Pack doesn't seem to come into it too much. This could be all wrong, or just a result of laziness. It just seems like sometimes 50 wt and a #2 is the same as 45 wt and a #3 on the track.

i hope somebody smarter than me comes on here and enlightens us.
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Old 09-18-2004, 07:08 PM   #7533
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In reality pack is more of an effect on off-road vehicles were they are jumping and landing, but pack would affect the way the shock would react on initial compression.


BTW: TO change the pistons I use a pick and pop the eclip off and pull the shaft quickly down (with out pulling the shaft out of the body) when the piston becomes dislodged from the shaft I pull it off, replace the new piston and pop the eclip back on with the pick
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Old 09-19-2004, 12:29 AM   #7534
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I just went with the Pro4, I would like to know what is the most important hop-up for this car? I will be racing on carpet this fall with rubber tires. I know alot of guys like to dressup their cars but I am looking for perfromance mod.
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Old 09-19-2004, 12:47 AM   #7535
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The Pro 4 is a very high spec as standard, and doesn't really need anything to make it go better.

However, you'll be looking at things like ceramic bearings, delrin pivot balls, choice of springs, carbon fibre upper link supports. If your track is quite unforgiving then possibly alloy C-hubs and steering knuckles won't go a miss (for durability purposes). Also, I've heard the carbon fibre shaft is good, I've just bought one but have yet to try it.
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Old 09-19-2004, 04:06 AM   #7536
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hi every1 i got my second pro4 at the weekend and when i got to the part when installing the pivot blocks i realised there were no spacers.

i need these ones as my other pro4 has them and that handles great but without these spacer it handles shite.

i dont really want to buy a whole new pack for 12 quid as only 4 of them will be used and the others wont so there is no point

can any1 help as what to do in terms of getting just them four or contact hpi and tell the

thanks
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Old 09-19-2004, 09:32 AM   #7537
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You'll just have to ring/email HPI and tell them, they're usually quite good so they should send some out to you. Also, if your kits don't have the version 1.1 gears you could ask them about those too....
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Old 09-19-2004, 01:12 PM   #7538
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Quote:
Originally posted by Skill
The Pro 4 is a very high spec as standard, and doesn't really need anything to make it go better.

However, you'll be looking at things like ceramic bearings, delrin pivot balls, choice of springs, carbon fibre upper link supports. If your track is quite unforgiving then possibly alloy C-hubs and steering knuckles won't go a miss (for durability purposes). Also, I've heard the carbon fibre shaft is good, I've just bought one but have yet to try it.
What about springs, I ordered the Hpi springs
for the Pro-4. I would like to use Tamiya springs. What are the bestfor the Pro-4?
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Old 09-19-2004, 02:02 PM   #7539
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pucho thanks for the tip I'll give that a try
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Old 09-19-2004, 05:27 PM   #7540
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Default Ball STuds

Hi what ball studs does everyone use or do you use the stock ones?

Cheers,

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Old 09-19-2004, 06:14 PM   #7541
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Mossie,

The Schumacher "Ball Grippa" cups are really good on the standard HPI balls - strong and very little play. The RPM ones are good also but personally never tried them
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Old 09-19-2004, 09:52 PM   #7542
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I also threw on some Schumacher Ball Grippas and they really are very nice ball cups.

Anyone running indoor carpet should consider the PRP chassis. I ran it for the first time today and really liked it compared to the stock chassis. My car seemed more consistent. I ran Kevin Kane's setup and it was really good.
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Old 09-19-2004, 09:56 PM   #7543
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anyone have his carpet setup handy? or know what page its on?
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Old 09-19-2004, 10:07 PM   #7544
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Default diff screws

Has anyone had problems with the standard diff screw head breaking off?

My rear diff did this a few weeks ago and I fixed with the associated diff mod. I got a diff for in the front and it was on its 3rd pack (one pack practice and the 2nd race) and the head sheared off this one as well!! It wasnt over tightned or anything!
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Old 09-19-2004, 10:10 PM   #7545
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Quote:
Originally posted by tamiyadriver
anyone have his carpet setup handy? or know what page its on?
it was posted by robk, and I think a few questions were answered in subsequent posts. Kevin Kane is usually on this thread or the PRP one. I'm sure Kevin would be more than happy to answer any questions. Sorry for volunteering you, Kev.

Here's a link to robk's post

Kevin Kane's Indoor carpet setup
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