snoopy

I agree, i bought some of the rc square knuckles when the car first came out, thinking the standard might be a little weak like the tc3 ones. but the standard ones are strong enough not to need alloy ones. My alloy ones are still in their packet.

VenomWorldOrder

quick question. do the tamiya derlin rear outdrives fit the pro 4?

Super Steve

iTrader: (9)

snoopy, want to sell me your aluminum ones?

I broke my knuckle first outing aluminum knuckle is very hard to bend I find.

venom, I doubt it but you can always try

raving-monkey

i think....a BIG think HPI have some delrin outdrives in production.

as hara was using some at the pre worlds....not sure if they were pro3 ones or actually pro4 ones in development.

Skill

I very much doubt that they will be the Pro 3 ones, but possibly.

Does anyone know if they made Pro 2 delrin outdrives because the Pro 4 ones aren't far at all off the Pro 4 ones.

As said before, it will be more likely to be a HB part as the Pro 3 one was too.

rayhuang

iTrader: (5)

A BMI equipped, but all plastic parts Pro4 put a whoopin on everyone at our track last night (carpet/foam tires). The only mods to it was the HPI 2.0 rear toe-in block. It was the racers first time with the car and he lapped consistently as fast as anyone has run on this layout with a Tc3. Even the sponsored guys. The Pro4 rally turned some heads last night.

Ray

pucho

Ray:

I got to put a pack on my 4 last night I can say that the chassis and the tow block have made a maked improvement on a good car to begin with. BTW who was the driver?

Luis

seaball

iTrader: (9)

yeah ray, pucho,

i didn't get to watch jimmy hermann run since i was chasing him all night, but he was more consistent last night than i have ever seen him. and every bit as fast. neither one of us contacted anything, and he had 8 seconds on me after the five minutes was up.

this was the first hurting that a pro4 has delivered at the gate.

things are looking up.

X2

Hi all. does anybody know the Pro4 spring rates in lb/in ?
If somebody does it would be a great help, Cheers

rc-zombies

iTrader: (9)

To convert gr/mm to lb/in
gr/mm divided by 454 x 25.4 = lb/in

from lb/in to gr/mm
lb/in divided by 25.4 x 454 = gr/mm

hope this helps.

Turbo Joe

iTrader: (41)

...and HD ballcups

Turbo Joe

iTrader: (41)

For the advice. I started to build a ball diff out of spares I have here, since I have Pro 4 outdrives and an extra gear and a bunch of everything else from the 2 and 3...something went awry (haven't checked it out yet) and I ended up with a spool...LOL

Sooo....how are spools for low traction?

Whatever I did wrong, it locked solid in 1-2 turns of the screw.

X2

Yes Thank you

rc-zombies

iTrader: (9)

maybe you forgot to put in the thrust bearing spring... I built one up from spare parts as well..and I forgot the spring...and it locked up...

Turbo Joe

iTrader: (41)

The spring is in there...I might have used the wrong bearings. Makes a really nice spool, though.

Would a spool work in a low traction parking lot?