Hpi Pro 4
Tech Master
iTrader: (6)
Originally Posted by SlamMan
Excuse me. The spur that came with my car was a 48 pitch. I got it used and just assumed that's what came with it. Sheesh!
THAT certainly clears things up some.
THAT certainly clears things up some.
Tech Elite
iTrader: (11)
Sorry dont know the answer to that, although Pro 4s are meant to have a problem with diff screws coming undone. I've never had the problem but ive only been racing stock and 540 (oh and the HPI Challenge 17t once).
There is an option part
73522 PRO4 DIFF SCREW & HEAVY-DUTY NUT
But i don't know how much this will help with the brushless you are running.
There is an option part
73522 PRO4 DIFF SCREW & HEAVY-DUTY NUT
But i don't know how much this will help with the brushless you are running.
Tech Champion
iTrader: (9)
There is no steel or alloy diffs available for the Pro4 that I know of.
It may be available when the Pro5 rolls out next year sometime.
It may be available when the Pro5 rolls out next year sometime.
Tech Elite
iTrader: (11)
OH NO!!! is there really a pro 5 coming out, i was hoping to be using my pro 4 for another few years yet :P
Originally Posted by xxxkat
Did you get a manual with your Pro4? It has a gear chart on page 32. If you don't have one here's some in the area you wanted.
Ratios if your running a 98 (stock spur)98/32 = 7.46, 98/33 = 7.24, 98/34 = 7.03, 98/35 = 6.83, 98/36 = 6.64, 98/37 = 6.46, 98/38 = 6.29, 98/39 = 6.13, 98/40 = 5.97
Ratios if your running a 98 (stock spur)98/32 = 7.46, 98/33 = 7.24, 98/34 = 7.03, 98/35 = 6.83, 98/36 = 6.64, 98/37 = 6.46, 98/38 = 6.29, 98/39 = 6.13, 98/40 = 5.97
Thanks for the numbers, xxxkat. That should get me the going in the right direction.
Tech Master
iTrader: (6)
Originally Posted by rc-zombies
There is no steel or alloy diffs available for the Pro4 that I know of.
It may be available when the Pro5 rolls out next year sometime.
It may be available when the Pro5 rolls out next year sometime.
Tech Champion
iTrader: (9)
Originally Posted by mangoman
OH NO!!! is there really a pro 5 coming out, i was hoping to be using my pro 4 for another few years yet :P
HPI has to keep up with the Jones..
Tamiya's Evo-V and Yok's LCG.
Tech Champion
iTrader: (9)
Originally Posted by bxpitbull
Where did you hear that? I spoke to the cats over at HPI and they said zip as far as a new HPI coming out.
the Pro5 was brought up many many many pages back.
Tech Master
iTrader: (6)
Originally Posted by rc-zombies
They're not going to tell you anything...
the Pro5 was brought up many many many pages back.
the Pro5 was brought up many many many pages back.
Tech Lord
iTrader: (38)
Originally Posted by rc-zombies
probably another year or year-n-half away..
HPI has to keep up with the Jones..
Tamiya's Evo-V and Yok's LCG.
HPI has to keep up with the Jones..
Tamiya's Evo-V and Yok's LCG.
Tech Lord
iTrader: (38)
Originally Posted by rc-zombies
They're not going to tell you anything..
afew questions regarding torque steer if ya dont mind...;
i here that with torque steer you can get more steering one way more than the other?
Which way would the torque steer effect give more steering on a pro4?
Im still trying to work out if its this or just a weight distribution problem that im getting because im racing with a stock motor on carpet with good grip and i assumed that it wouldnt really affect the car much in these conditions... is it as significant that you could notise when your only going like half stock27turns speeds into corners?
And if so, i here this can be helped by adding more droop to one side of the car... which (also ive been getting mixed opinions on which way more is..., when the wheel is allowed to hang lower?)
cheers for any help
i here that with torque steer you can get more steering one way more than the other?
Which way would the torque steer effect give more steering on a pro4?
Im still trying to work out if its this or just a weight distribution problem that im getting because im racing with a stock motor on carpet with good grip and i assumed that it wouldnt really affect the car much in these conditions... is it as significant that you could notise when your only going like half stock27turns speeds into corners?
And if so, i here this can be helped by adding more droop to one side of the car... which (also ive been getting mixed opinions on which way more is..., when the wheel is allowed to hang lower?)
cheers for any help
Tech Champion
iTrader: (9)
you should not have any torquesteer when running stock motor. it's noticable when running 19t or mod.
if you look at some of Hara's set-ups... you'll notice that the rear droop are different. 5mm on the left and 6mm on the right. this is to minimize torquesteer.
if you look at some of Hara's set-ups... you'll notice that the rear droop are different. 5mm on the left and 6mm on the right. this is to minimize torquesteer.
is 3/32" ball the same as 2.4mm ball? thanks
EngTat
EngTat
Tech Champion
iTrader: (9)
Originally Posted by EngTat
is 3/32" ball the same as 2.4mm ball? thanks
EngTat
EngTat
yes..
3/32 = .0937in.
2.4mm = .09448in.