jrabbito

Rody,

I feel your pain. I ran a NTC3 last season, and that S bend isnt the optimal design. If you have extra manifold (in case it doesnt work for you), try cutting 10mm off the manifold. This should help out greatly on the top 1/4 of the power band.

Also if possible converting to a centax clutch is huge. These two mods will wake up that Rody!!


John

Rody

will i lose bottom end by cutting the manifold? Im using a Traxxas clutch at the moment with a 2mm drill hole in each shoe! It feels like my old centax.

AndyT ©

I`ve raced my Factory Team NTC3 at both Moorebank and Eastern Creek tracks here in Sydney and was very pleased with the way the RB V12 (non-turbo) performed with the FT dual chamber pipe......VERY good low to mid range power and the top end was good as well.
That engine now resides in my RRR with a RB manifold and RB V-Concept 401 pipe......the only real difference thats noticeable over the pipe/manifold in the FT NTC3, is that theres just a fraction more torque on the bottom end with the RB pipe setup.....top-end is virtually the same.
Cheers

AndyT ©

How large a tyre diameter have you been using Rody?

bbntc3

Rody: Cut the pipe like said here and try, I think 10mm is'nt enough but try that first, if that helps go 13mm in 1mm intervals to make sure 13 is not too much. I'd try the factory dual chamber instead of the ofna if you have it or buy it. It's the cheapest thing next. If money is'nt a problem get the RD lodgics pipe (Turbo pipe), or better yet try the WERKS RACING I really like the WERKS pipe. I've always prefered the RD pipe and the WERKS pipe.

bigtez

iTrader: (6)

i am running a jp fx3 with "the winners choice" pipe (US$37.90 from rcmart). it has ballistic bottom end and only slightly slower top end then the hoards of mugens at my local track. i am using 21/27 pinions and 48/54 spur gears.

SNACKPACK

Hi Rody,
I run RB Engines in my NTC3 (V12 and V12 Rody) and I find the RD Logics pipe quite good for delivering top end power, due to it's smaller volume. The Factory Team dual chamber pipe is also an excellent choice.
Hope this helps.

Rody

Thanks for all the help and feedback guys. I'm going to try the the RD logics pipe setup! P.S. Andy T, i was running out of legs 3/4 of the way down the straight at Moorebank with standard gearing!!!

mgreen

Here you go Striker. Centax view.

AndyT ©

Rody,
Moorebank will certainly test a car out for gearing......i ran the stock FT gearing there 54/48 , 21/27 and it wasnt too bad at all down the straight as long as tyre diameter wasnt too small.
A friend of mine is running a FT NTC3 with a mod .12 in it at Eastern Creek... running the FT pipe this car makes some serious low end torque but the straight there just isnt long enough to see how the cars top end is....hopefully he can get it down to Moorebank one day
Cheers

Rody

I just went to Joe's (RB distributor) house and picked up an RD logics pipe! Hopefully this does the trick! Your not wrong about Moorebank, its a true test for a nitro car where gearing and everything has to be spot on!!!

AndyT ©

Its also a track that will show up any weak point in a car......if theres something about to break in a car, you can be sure it`ll happen at Moorebank

Rody

Hey guys, got the RD logics pipe. Lost a bit of bottom end but gained heaps of top end! 2nd run down the straight, BANG, broke the crankshaft! . That is the last RB engine i will own! It's been nothing but trouble. Long live Novarossi!

InitialD

Rody, which RB is this? The older X12 or the newer V12 model? I know the older RB X12 crankshafts are notorious for this...

Rody

It's a V12. I has only had aroung 7 litres of fuel through it (1.5 gallons or so), i've been through 2 rods, piston and liner, and now crankshaft! I take so much care of it, and only use it for racing and not bashing. I also never run it lean of hot!