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Old 10-24-2004, 11:38 AM   #8251
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I have a question about the shock pistons. Can anyone tell me what piston has what diameter holes?? i think they are numbered 1-5, and pistons 1-4 are 2 holes, while piston 5 is 3 holes. Im just not sure which ones have what diameter holes, and its a little hard to get a reading with my caliper. Thanks!
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Old 10-24-2004, 01:50 PM   #8252
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Default pro 4 spring rates

For whoever asked, Blue is the softest, for lb/in check this: http://www.hpiracing.com/graphics/in...r_Outlined.jpg
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Old 10-24-2004, 02:21 PM   #8253
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RCZ: No, It's not Square, it's my custom made motor mount! Square is same thickness with std. but mine is 1 mm thicker than std. If you take a close look at Hara's car at Pre world, you'll see new motor mount he used. This is almost same. Mail me if you interested in it.
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Old 10-24-2004, 06:28 PM   #8254
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Smile Hi to everyone here

First off I just want to say Hi to everyone here. What a great forum! I have read a ton of stuff on the Pro4. I have to say I have just come to the end of putting my kit together and it went together sweet. What I need to know is a good starting point for a carpet car on foams. The track I'll be running on was just finished last week. As a matter of fact Mike Dumas put all the carpet down and was very happy at how smooth the track was. It's about the size of the RC Madness Track in Enfield CT. The track is at Wolcott Hobby=WWW.Wolcotthobby.com. So what I wanted to ask for was a start point for my Pro4 on foams and a new track. I know the track is gonna be loose for a while but I need something to start with. This is my first onroad car so its gonna be a learning curve for sure. I have done lots of offroad stuff. I took second place in points in the Unlimited truck class at wolcott (trusty GS SUT). So all help would be awsome. Onroad is new for me. Can ya tell me of any parts that should be upgraded before I get rolling?
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Old 10-24-2004, 07:19 PM   #8255
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Sluggo: Check out HPI's website, under Pro4>Setup Sheets> they have a few carpet setups. Id check out Thad's Carpet Setup as a starting point.

Rc-zombies: Cna you tell me where you bought your Hara twister from? I know they are discontinued since the 2 is coming out, but i wanted to see if i could get my hands on one. Thanks

All: Can anyone tell me what piston has what diameter holes?? i think they are numbered 1-5, and pistons 1-4 are 2 holes, while piston 5 is 3 holes. Im just not sure which ones have what diameter holes, and its a little hard to get a reading with my caliper
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Old 10-24-2004, 07:22 PM   #8256
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sluggo.

if you're looking for a good staring point for stock chassis, stock motor and foams...

this is a revised version of the first Kevin Kane setup posted...i ran this today and it worked pretty well. the setups that Kevin has posted have been awesome and work as great starting points for other people as well.


Front
#3 pistons
45wt oil
HPI Pink Springs #6759 30.2 LBS Or Losi White 30 lbs
1 Hole in on the shock tower from all the way out
Inside hole on the lower arm
0 deg toe block
2mm shim under the rear front block
1.5mm shims under the front block.....Anti Dive for the front arms
6 deg castor blocks
1 hole for akerman plate
Forward hole on the steering knuckle
Inner hole for upper ball stud....1mm under ball stud
silver swaybar

Rear
#3 Pistons
40wt oil
HPI Red Spring #6754 24.2 Lbs Or Losi Black 25 lbs
All the way out on the rear tower "stood up"
1 in on the lower arm
2 deg toe block
1 mm shim under rear rear block
1.5mm shims under front rear block....Anti-squat in the rear
Rear hub stock spacing....big shim in the rear
Hub ball stud on the inside hole
Inner ball stud on the inside hole
.75mm under inner ball stud
coppersway bar

4.5mm rideheight all the way around
1.5 droop all around

Parma Cyan and Magentas. 2.33" diameter
34/100 with Monster Stock
Protoform Alfa


Kev K...thanks for the setup and tips...my Pro4 was finally working well today!
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Old 10-24-2004, 07:51 PM   #8257
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Quote:
Originally posted by tunerjetta29
.....Rc-zombies: Cna you tell me where you bought your Hara twister from? I know they are discontinued since the 2 is coming out, but i wanted to see if i could get my hands on one. Thanks
...
check ebay... there were a couple at clearance prices of $130.00+/-
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Old 10-24-2004, 08:01 PM   #8258
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Rc-Zombies: Ive been checking ebay for the last 2 weeks, but havent come up with anything. Ill keep my eye out though, thanks
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Old 10-24-2004, 08:27 PM   #8259
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Nexus....WOW!! that was fast thanks
I'm guessing thats with a Diff. up front???
Seen alot of Kevins stuff here....he is on the ball!
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Old 10-24-2004, 08:33 PM   #8260
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Always a diff on carpet
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Old 10-25-2004, 09:15 AM   #8261
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sluggo.

no prob.

---------------------

for those asking about BMI and PRP chassis....at the local tracks around here there are people with stock, bmi, and prp pro4s.

overall i think if you run foam tires on carpet a 3mm chassis is the way to go.....which is better? not sure...i guess it's just personal preference. both BMI and PRP have performed really well.


i have been running a stock lower chassis with a 3mm top deck....this seems to work pretty good.

--------------------

robk.

good run this weekend.......looks like your castor experiment was working well by the main.
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Old 10-25-2004, 09:21 AM   #8262
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Default Pro 4 rubber on carpet

How's the car on carpet with rubber tires? My son is considering getting one. Appreciate any feedback. Thanks.
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Old 10-25-2004, 09:23 AM   #8263
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Default Re: Pro 4 rubber on carpet

Quote:
Originally posted by coolrcdad
How's the car on carpet with rubber tires? My son is considering getting one. Appreciate any feedback. Thanks.
planning to be in Washington..Renton/Kirkland area during Thanksgiving week.... where do you run Carpet?
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Old 10-25-2004, 09:25 AM   #8264
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Default Re: Pro 4 rubber on carpet

Quote:
Originally posted by coolrcdad
How's the car on carpet with rubber tires? My son is considering getting one. Appreciate any feedback. Thanks.
Car works great with rubber tires on carpet. I hav a pro4 that I run in stock rubber with a BMI chassis. So far it is the car to beat. Very hooked up.
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Old 10-25-2004, 09:26 AM   #8265
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tunerjetta29: They tend to frown on touring cars running foams at SoCal. The normal setup for touring is rubber tires (Sorex 36’s, or if it is “cold” sometimes Sorex 32’s, but VERY rarely).

As for the pistons:
#1 – 2 hole – 1.2mm holes
#2 – 2 hole – 1.1mm holes
#3 – 2 holes – 1.0mm holes
#4 – 2 holes – 0.9mm holes
#5 – 3 holes – 0.7mm holes


sponger: lol

vi3tishduy: Despite the common idea that stiffer is better, our team drivers often find the 2.0mm main chassis will work great on asphalt. The 2.5mm chassis is best for most conditions. The 3.0mm is good for high traction conditions like carpet or a highly prepared track. You can then further fine tune with the upper deck thickness.


-E
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