JohnB

iTrader: (1)

I agree. No alum. for me. I would like to see some caster blocks that don't bind the steering. Still running the lower steel insert with the flange outside. Can't compain though. Work just fine.

Ron Meloni

iTrader: (49)

Who's making that carbon fiber center shaft?

Erlend

HPI fabricates a carbon shaft, and RCManiax does also.
I dont know wich of them is the better.

rc-zombies

iTrader: (9)

HPI #31404

pro4racer

hi i bought hpi ceramic nitride diff balls the other day to replace the stock carbide ones and they make bugger all differnace.

y is this have i built them wrong.

im using tamiya ball diff lub in the diff and running them on the verge of slipping so they are quite smoothe but not as smoothe as every1 said the ceramics make them.

Skill

The main advantage of having the ceramic balls is that they will last much longer, however, they should make the diff a bit smoother too.

Super Steve

iTrader: (9)

I think it's the way you build them and what type of grease use...

I used trinity "purple stuff" when i built the kit... It slips alot even when tightened alot. When i purchased an extra diff for front, I used kit stock white grease and my front diff is loose, smooth and never slips. It's an amazing diff...

Also, Sanding the ring helps minimizing ball diff slip

S15Racer

I like the looks of those new arms. I'll take more flex any day, you know why? Because parts that flex dont F-ing break everytime you touch a board! ok, I feel better now...

Also I dont know if I like that aluminum steering linkage though, as I had a servo saver shaft (solid aluminum part) break on me not long ago, and that was with the stock plastic parts. If those parts were made out of aluminum, then theres no give anywhere and its just that much easier to break stuff. I'd rather break a $10 steering linkage than my $80 servo.

Steve B

There's no way of pleasing everyone. HPI make stiffer parts because of slop in PRO 3 and now some people wnat more slop in thier PRO 4

rc-zombies

iTrader: (9)

boiling the arms would also make them more flexy.

Super Steve

iTrader: (9)

er...
HPI's bellcrank has adjuastable servo saver built in...

robk

iTrader: (22)

Hook yourself up with a BRP TC3 bumper bro. That has made my front end bulletproof. I havent broken any arms since I went that way.

Oasis

iTrader: (38)

I have been racing my pro4 for a while now and I can say I have never broken any A arms..gears yes..

rc-zombies

iTrader: (9)

Me too...yet to break an arm...and I've hit boards plenty hard...and no damage. If I were running the TC3...the whole side of the car would be gone...

All Speed Hobbies

i've used a NTC3 bumper on my pro4. here are a couple of pics

pic1 pic2 pic3