ferrarimk13

Hey, im not really into gas trucks, but i need a truck engine for my hpi rs4, and i found one that drops right in but has a short shaft. Now i dont know which clutch i can use for it, but im guessing gas trucks need the clutch and gear in a shorter package, so what kind of clutch and clutch bell can i use for a short shaft?

REDisFASTER

you could try the NTC3 clutch nut to turn the short threaded shaft to an SG shaft. Then just use the stock RS4 clutch, assuming its a centrifugal shoe clutch

ferrarimk13

ahh, thanks a lot.

jatoracing33

i cant realy think of any other ideas except changing the shaft(if possible). either way, it doesnt sound like a 10min project.

ferrarimk13

yeah, like what clutch do you guys use if u have a short shaft?

Oliver_Klozov

Get the right shaft and your laughing

ferrarimk13

what?

Oliver_Klozov

You can buy just the clutch shaft for your motor it fits any engine and ever car can buy a different shaft. I've used an hpi vx -18 motor on an rc10gt just needed to change the shaft. That motor was in an rs4-3 so you should just be able to buy the correct shaft for your car unscrew the old shaft off the flywheel and put the new one on.

ferrarimk13

ohh, okay, thanks, ill look up some now, for prices.

REDisFASTER

If you've got the short threaded shaft, theres absolutely no need to purchase a new crankshaft, unless you want a full one-piece shaft.

All you need, like I said above is the NTC3 clutch nut: http://www2.towerhobbies.com/cgi-bin...?&I=LXBMD5&P=7

Oliver_Klozov

the rs4 has a double wide clutch "http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXM729&P=7" with two sets of teeth on it so im not sure how the ntc3 clutch nut will work. What i meant was the pilot shaft.

ferrarimk13

the pilot shaft is the larger than standard one right?

ferrarimk13

with that clutch nut, what would i have to do with it?

REDisFASTER

Since you have a short threaded shaft, the NTC3 clutch nut works as an extension. It makes the shaft longer (make sure to threadlock it when installing), and also turns your 'short threaded shaft' to an 'SG shaft'. the SG shaft is more commonly used in ST, so you'll have an easier time finding flywheels and clutch bells to work.

$5 for the NTC3 clutch nut or $30 or more for a whole crankshaft?

ferrarimk13

ahh, so i just screw that nut in to the end, and install the flywheel and clutch?

Oliver_Klozov

you got it its as easy as screwing

ferrarimk13

oki then, thanks a lot guys.

REDisFASTER

lol, flywheel shim and the brass conical spacer first, then flywheel. Put the clutch nut on, stick your clutch shoes on, install the springs, bearing, clutch bell, bearing, shims, and then just threadlock the screw to the end of the clutch nut.

ferrarimk13

okay, im saving this page for when i get it, greeat, thanks

guesty

what would a racing clutch actually improve on my firestorm

ferrarimk13

it leaves harder, thats it. Better acceleration

rhysdejager

its like the shaft isnt long enough :S

rclynx

HUH[X(]

rhysdejager

any ideas what ive done wrong?