GREGORY!

iTrader: (1)

roelof?do you have the answer??

SebO

iTrader: (1)

I dont think that there are two different materials.

2.thought: or it could be^^. Then it is right what Roelof said. But really, I dont think that is it really needed.

Roelof

The conrod is always touching the backplate making scratches. I know some have played with teflon and DLC coatings to lower the resistance when touching it which still slowly disapeared and since the Collari 35-plus-21 they have inserted a steel plate. I do not think it makes a difference but hey, somehow the marketing has an effect because people want it.

GREGORY!

iTrader: (1)

i don't think that i speak for a marketing part like dls,flex here- there.it 's a 10 euro part that will eliminate the rough worn at the rod and the back plate.

rip67vdub

iTrader: (37)

oops. wrong thread.

asc

Does anyone have much experience with the novarossi pre run engines? I recently purchased a flash 21 special pre run and the compression seems quite low (can turn the engine over by hand relatively easily). Is this normal or something to be concerned about?

ToysRUsKid

iTrader: (16)

I had two pre-run .12s this season and mine were similar. There was no shortage of power though.

lil-bump

iTrader: (89)

My pre-run Flash PT .12 after 1.5 gallons still has a small mechanical pinch with tons of power. I will purchase all my future engines this way. Engines nowadays take forever to break-in.

Pass you soon...

asc

Interesting. 2 completely different answers. I'm hopefully going to run mine for the first time tomorrow. Guess we will see how it goes.. Hopefully I haven't bought a $600 lemon.

ToysRUsKid

iTrader: (16)

I don't think they were completely different. I think you'll be happy with your motor and the time you saved by buying it the way you did.

asc

Thanks for your replies. I ran the car today and the motor seemed to run alright. Still concerned about its longevity though. Once it's warm it extremely easy to turn over by hand. There is barely any resistance at all at tdc.

HHH

I have a .12 Keep On pre-broke in that I could turnover by hand before I even started it. I was surprised like you.

It is still the fastest Nova I have had with 9 litres and 3 races through it.

http://www.rctech.net/forum/onroad-n...eep-tuned.html

asc

Thanks that's comforting to know. Mine is pretty much the same with no mechanical pinch at all to speak off. I've only had a chance to run a single tank through it so far and it was still quite rich, but it didn't miss a beat. Hopefully get some more time to test this weekend.

ToysRUsKid

iTrader: (16)

My first one I was concerned, then I bought a new run-in for the GLC. Paolo tuned it and "SWEET BABY JESUS" that thing was fast. Neither of them had much of a pinch but they ripped. I'm only about 90% of where lil-bump is, I want to learn how to do this on my own but it really is nice to know all you have to do is put a clutch on, tune, and you're ready to race.

lil-bump

iTrader: (89)

I replaced the connecting rod and pin after the first 3/4 gallon.


Pass you soon...