Nexus

iTrader: (42)

With the wider BRP front bumper you really shouldn't be breaking much. Most of the guys running the Pro4 in this area have added the wider bumpers and don't break much at all.

rc-zombies

iTrader: (9)

instead of the wider TC3 bumper I installed a more firmer thicker, wider foam bumper since day 1 of getting the car... I haven't broken any suspension parts yet. Only thing I've manage to bend are the screws on the Toe-in blocks.

robk

iTrader: (22)

Indoor carpet racing or tracks using 2x4 barriers-- get a bud's (BRP) bumper

Otherwise the foam will prolly suffice

JohnB

iTrader: (1)

I just use a TC3 foam bumper with another 1/2" or so added and mold it to fit the curve of the body.

I'm not sure how you can bend a dogbone unless something else breaks in a wreck. In the 5-6 months I've been running my Pro4, the whole time with 9-10 turn motors, I've haven't broken or bent anything. My son running 19 turn or stock had the ball stud pull out of one rear hub carrier. Wait we broke a steering spindle also a long time ago I think, maybe a caster block, something in the front anyway.

I know this car is more durable than anything else at our track (110'x36') indoor carpet. The only car I've seen close in durability at our track is the Xray.

take care
john

ChadCapece

I've bent three dog bones. I was running Mod and 19turn, with a homeade spool. Just clipping the board on the back straight did it.

I replaced them with MIP shiny TC3 cvds. That did the trick, and I would recommend it to anybody running a front spool or oneway.

429racer

iTrader: (19)

I just got an Pro4 today and was looking at setups and I am having a hard time reading these setup sheets. The question I have is there a toe/sweep hinge pin block made for the front/rear because all I got with the kit was a 2.0, 2.5 and a 3.0 block? 2nd question: is the front blocks the same as the rear blocks? Thanks guys, I don't mean to sound dumb but these setups are different than whaty I am used to.

Thad Garner

Yes, the blocks are the same. I think that answers both questions?

The kit setting is 2.5 front and 3.0 rear. This is the best setting for most asphalt tracks if using rubber tires.

429racer

iTrader: (19)

On the setup sheets next to the pivot block they have markings of 1, 1.5, 2, 2.5 and three. I see for the front block the 0 is circled and for the rear block the 2 is circled, am I supposed to have a 0 degree toe-in block in the front and a 2 degree toe in in the back? I guess the first question I did't state very well was does HPI make a 1, 1.5, 2, 2.5 and 3 toe in blocks? If so then I must be missing the 1 and 1.5 toe-in blocks. I mainly race on carpet.

Thad Garner

The kit should have only come with a 3 and 2.5 block. You are not missing anything.

http://www.hpiracing.com/graphics/in.../Pro4_pg34.jpg

pro4racer

hi

just wondering these new suspension arms the ones that are more forgiving in low grip tracks do we get these as a free suplement like the updated gears or do we have to buy them if so how much will they cost

pro4racer

sorry another thing is wots the biggest spur gear in 64 pitch u can fit on the pro4 without modding the chassis in anyway.

would a bigger spure give u more speed

thanks

Chazz

I don't have a pro 4 but i know that a bigger spur would give you more accelaration out of corners than a smaller spur

Chazz

pro4racer

k thanks for that i will get a larger spur then

Entropy

100 spur, someone mentioned.

Entropy

I believe they are an option part, they are cheaper than the stock graphite arms, but come in packs of 4 (full set of arms).

They should be more forgiving on impact too, being less brittle at the graphite ones.