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-   -   HPI RS4-3 Thread (https://www.rctech.net/forum/nitro-road/57367-hpi-rs4-3-thread.html)

wallyedmonds 07-11-2006 02:19 PM

it sounds like fun,hope it works, but the conrod looks very very umm skimpy, and have you tryed nifing the leading edge of the crank

BB Mods's 07-11-2006 02:23 PM

I can asure you the conrod has the same strength as b4, even on a dummy prop load i hav spun the engine to 38k rpm's for 45sec with out a single loss, allthough i did see quite a bit more stress on the piston skirt B4 i trimed it up.

wallyedmonds 07-11-2006 02:27 PM


Originally Posted by wallyedmonds
it sounds like fun,hope it works, but the conrod looks very very umm skimpy, and have you tryed nifing the leading edge of the crank

:tire:

BB Mods's 07-11-2006 02:30 PM

http://www.linkforcecorner.com/uploa...18sspiston.JPG

BB Mods's 07-11-2006 02:32 PM

nifing ??? Explain please

wallyedmonds 07-11-2006 02:44 PM

wish i can do a pic to show you but look at a jp mod 21 or a massimo fantini max

BB Mods's 07-11-2006 02:55 PM

Got a link for me to look at?

Im going out to the shop to test run this new skirt idea, ill let every 1 know how it went.

Artificial-I 07-11-2006 03:19 PM

Think of a sword.

BB Mods's 07-11-2006 03:29 PM

Your talking about KNIFE edgeing the crank, yes that help's with oil slosh and it might verry well help us here,Let me draw up a plan and order a new batch of crank's and try this once more shall we :)


BTW Here is my 3 .18 beauty's


I will be building up the OS engine there by request of a certain some one on this forum ;) I need to find a good carb for it as that HPI is under sized for any real power.

http://www.linkforcecorner.com/uploa...s/1/3beast.JPG
http://www.linkforcecorner.com/uploa.../1/3beast2.JPG

apollo 07-11-2006 03:31 PM

hehe, take the os carb off the 18ss and put ti back on the 18 cv-r just temporarily as you mod it

BB Mods's 07-11-2006 05:20 PM

i need a pull start crank and backplate for the OS b4 i can test it, ill go order that stuff right now.

EDIT:
Just orderd the new part's they should be here day after tomorrow.

BB Mods's 07-12-2006 12:10 PM

Ok guy's i just tore my tranny down and found a piece of trash stuck in the 2nd gear clutch, could be why my shift's were wacked out..any idea's for preventing this?

Rapid Roy 07-12-2006 01:01 PM

Drive in a cleaner parking lot. :lol:

Actualy, that was a serious comment. Getting debris inside the 2 speed is pretty rare. I wouldn't worry unless it starts happening regularly.

BB Mods's 07-12-2006 01:11 PM

Yea i was thinking the same thing, by my tranny isent stock, it has a billet case thats verry open.

Rapid Roy 07-12-2006 01:14 PM

There might be a lexan cover available for the NMT that would fit since it shares the same drive train.


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