JohnB

iTrader: (1)

429racer

iTrader: (19)

Anyone know of where I can get the 0 degreee pivoting blocks?

JohnB

iTrader: (1)

Most of the large mail order places carry HPI parts. Tower Hobbies, Stormer Hobbies, KT Hobbies are all places I've ordered from.

gacjr0

iTrader: (15)

re: breakage at our track

I don't think you can take much form the amount of breakage at our track. Maybe the teams should come to Idaho for durability testing . I know of a Tc3 that never breaks there too.

From what I've seen of the other cars hitting yours and Gus's (when you're lapping them) the Pro 4 has no durability problem.

StewartFan20

iTrader: (4)

I am using a 100 tooth spur. I read where someone is using 104 tooth spur.

I alos found that running the larger spur, and keeping the same gear ratio (larger pinion), the motor runs cooler.

Aurra Sing

I'm using a 100t Kimbrough spur, but it's right at the edge of the bottom of my 2.5mm chassis.

pro4racer

so i can say its safe to use a 100t spur gear with out any modding

does hpi make a 100t derlin one for the pro4

thnks for all ur replys

ernestf

iTrader: (2)

pro4racer - yes, HPI makes the white spur gear, 100T 64 pitch. I have used it on mine for quite sometime.

pro4racer

ernestf thnks for that

when u are using ur 100t spur are u using the standard stock chassis or did u have to mod it for the spur to fit in or is it a straight fit

thanks

DJG24

I'm running a Kimbrough 100t spur with the 3mm chasis, but I do know it works with the stock 2.5mm chasis also.

RCGaryK

iTrader: (3)

<---102 RW spur

Brian McGreevy

iTrader: (10)

I'm running a 104 with the BMI 3 mm chassis. I had to bevel the edges of the spur opening in the chassis and topdeck to get it to fit. The biggest spur you can fit in the car will usually be the fastest, as it will let the motor run cooler (and thus more powerfully) with the same ratio.

Erik Shauver

Here's a quick reference chart. I'd give yourself about 0.3mm to 0.5mm clearance unless you have measured the exact thickness of your chassis and are running on a very smooth surface. The chart uses exact chassis thicknesses whereas actual chassis thickness will vary slightly.



-E

pro4racer

hi erik i take it that the numbers in red are not to be used as these will exceed the thickness of the chassis

is that right.

thanks

Hugo

iTrader: (1)

Does 1° rear hub exist for the PRO4 (#)
What is the sizi for the rear hub bearings?

Thanks