352LikesNOVAROSSI Engine thread....
11-14-2011 | 11:26 AM
#1786
You know I'm no idiot. I've been racing rc cars for over 20years, and I've had nitro buggies since 1990. and I'm just saying when i clean and rebuild my x7 with ceramic balls in the bearings that monty did when I spin the crank with my hand before i reinstall the piston and sleeve those bearings are smoother than any other I've touched...
I never said anything about performance gain....but it does feel like a ceramic rear helps the motor spool up faster, but doubt it makes more measurable power.. I have a lot of attention to detail and I can feel very slight changes in my car so take it for what it's worth....maybe I can measure what your dyno can't with my highly tuned sensory input device....
I never said anything about performance gain....but it does feel like a ceramic rear helps the motor spool up faster, but doubt it makes more measurable power.. I have a lot of attention to detail and I can feel very slight changes in my car so take it for what it's worth....maybe I can measure what your dyno can't with my highly tuned sensory input device....
11-14-2011 | 11:30 AM
#1787
11-14-2011 | 12:19 PM
#1788
Joined: Jan 2007
Posts: 10,180
From: VA
Anyone looking for a near new Novarossi 9853 Super Strong pipe I just listed one for a good price.
http://www.rctech.net/forum/r-c-item...ml#post9909221
http://www.rctech.net/forum/r-c-item...ml#post9909221
11-14-2011 | 12:44 PM
#1789
Ok
I have no doubt it feels like is spins smoother.. As for a engine spooling faster under load, not likely....Not unless the bearing being replaced created substantial amounts of drag of course....ceramics are smoother in theory, but since these bearings are being run nearly submersed in lubricant I cannot see any noticeable friction differences between steel and ceramic... if the lubricant is doing its job the balls will be riding on a film of oil anyways.... Well thats my story and I am sticking to it !
11-14-2011 | 01:03 PM
#1790
Understandable.....I didn't intend to offend you if I did so !
11-14-2011 | 01:11 PM
#1792
Tech Regular
Joined: Jun 2010
Posts: 435
The main advantage of ceramics is less rotating mass, which means faster spool up and some gain in top end RPM. That is the theory at least. Is it measurable?...idk
They should last longer aswell as the balls wear less then steel. Note i write "should" as ofcourse there are more factors that dictate wear. The balls can't rust either which is a plus aswell.
11-14-2011 | 01:23 PM
#1793
Tech Lord
Joined: Aug 2007
Posts: 14,045
From: Holland
4Nice discussion about ceramic bearing. Can someone explain why Novarossi can ask 100 dollar for a main ceramic bearing which will last only 5 liter in the onroad while their 50 dollar priced main steel bearing last longer?
It is not only about the balls but the braces also and there seems to be a weak point with Novarossi.
I wish engine manufacturers would use normal standard size bearings, then there was a wide choice in cheaper and I do think much better bearings.
It is not only about the balls but the braces also and there seems to be a weak point with Novarossi.
I wish engine manufacturers would use normal standard size bearings, then there was a wide choice in cheaper and I do think much better bearings.
11-14-2011 | 08:07 PM
#1795
11-15-2011 | 07:09 AM
#1797
11-15-2011 | 12:21 PM
#1799
Tech Master
Joined: Jul 2009
Posts: 1,792
From: Frederikshavn, Denmark
+1 on the 41019 header.
Hard to tune with small venturi? Yearh. Last year I tried 6 mm in a Plus4 at 27º Celsius. I nearly just had to touch the LSN, and the tune was changed. Sensitive? Yep. Great fun? ABSOLUTELY!!!
Hard to tune with small venturi? Yearh. Last year I tried 6 mm in a Plus4 at 27º Celsius. I nearly just had to touch the LSN, and the tune was changed. Sensitive? Yep. Great fun? ABSOLUTELY!!!
11-15-2011 | 01:02 PM
#1800
those headers dont work quite as well on the 9886 , has what a feels like a lean bog that isnt and cant be tuned out , i have played with lots o combos over and over and over and over and when the 9886 is brand new it works OK but as soon as any buildup starts in the pipe , no bueno