Maximo

iTrader: (11)

I am by no means here to argue with anyone ! I seen a mention of testing ceramic bearings on a dyno...since I have tested them on a dyno I figured I would share what I found.....nothing more, nothing less..it is what it is I am just relaying what the testing found..this is fact, not opinion...

However with that being said there still can be possibly some gains to be had...The nature of the dyno limits the rate of acceleration of the engine, the dyno has a heavy flywheel that the engine must spool up....Ceramics reduce rotational mass....The gains from reducing rotational mass become more and more noticeable the faster and faster the rate of acceleration of the engine becomes......So in a light car with a 2 speed you may feel the engine spool up a little quicker with ceramics.... But loaded down on the dyno the reduced rotational mass has little effect......

wingracer

iTrader: (24)

Man you got that right.

wingracer

iTrader: (24)

I am a little surprised by that. Not saying you're wrong, just a bit surprised. But like I said earlier, my positive results may have just been due to nice, new ceramics vs. old, wore out steel bearings.

Maximo

iTrader: (11)

The engine I tested did have good quality steel bearings in them..Maybe that also had something to do with it...I was kind of disappointed the ceramics didn't show a gain...I will do another test on the next engine I tune on the dyno...This was also on offroad engines...but I do spool many of them to 45000 ..

Roelof

You have compared 2 different engingines, how much do you expect they are excactly the same? Novarossi makes the engine with steel bearings by means a little bit slower so people have to buy the most expensive one If they made excactly the same engines then they know the 100 dollar more expensive engine will not sell.
I was told by 1st hand the ceramic bals they use just cost 11 cent a piece....
If you would be so nice to use 1 engine and change the bearings on that I wonder if you still would notice the difference.

Well, actually RPM is power. It is the goal in the F1 if there were no limits. RPM x Torque = power

A good steel bearing runs better than a bad ceramic one. Every bearing made bij INA, SKF and name them all you can get them in all kind of specs and the specs can tell you every detail of all components in the bearing. I have never seen this with Novarossi so with the current short lifes the original bearings have you can ask the question how good the quality is.....
And yes, I have changed from ceramic to steel also without any issues.

wingracer

iTrader: (24)

Yes, RPM x Torque is power, not RPM alone. Simply saying one motor turns 44,800 while another turns 44,900 does not tell you which one makes more power.

I have a motor that will spin over 120,000 rpm but it will not push a 1/8th very fast

jdesoto

Have you tried the new Novas? We have done many tests on the track and they are all showing an edge for the double ceramics engines. Nova makes single ceramics versions of all the new engines so if you are not convinced just go for that version and you will save some money, too. Either way the new engines are awesome.

HoboShop

iTrader: (3)

Ceramic bearings do make a difference. On the dyno my jp eagle tl3t would turn more rpms but my 353 Murnan tuned felt so much faster on the track. So dyno numbers can be misleading you have to go off of ontrack fill. Midrange is the most important factor in gradeing a engines performance. And I have heard the the new flash motors have alot of midrange. I would never question anybody who when to MIT. Desotoracing is a genius. He is correct ceramic bearings do allow you motor to make more power and spool up harder and faster.

wingracer

iTrader: (24)

What does that have to do with ceramic bearings? That's two different engines. Also, once again, RPM is NOT power. On the dyno, which one made more POWER over the working rpm range of the motor (area under the curve)?

Yes, dyno numbers can be misleading if you don't know how to read and interpret the graphs. Most people seem to think whatever makes the most peak power is better. Since we don't have CVT's, that is rarely the case.

Roelof

Even 2 same engines but from a different production can be different from what I have seen with Novarossi. That could be within the timings and within the used materials.

Maximo

iTrader: (11)

I have not tested the new Nova's...However if you wish to have the new Nova's tested please contact me and we can make some arrangements to have them tested !

Spillertwo

Which exhaust and manifold are you guys using with the new .21PTS engines ?

JIM1

Ok, so I want to buy a Nova and I have rounded it down to these three -

Kangaroo
35+21 tuned
Flash tuned (not the 2011)

I will mostly be running on medium size tracks with some complex turns.

I like the price of the Kangeroo but am unsure of the performance againsed the other two motors.

Any thoughts on this? Was maybe gonna run with a long header as my tracks straight isn't too endless. Just to compare, I have been running Mega DS tunes engines in the past.

Thanks!

Grinder

iTrader: (2)

2015 with short, or medium manifold.

Roelof

I think you will have enough with the 35+ engine, for sure the tuned runs almost like a Flash. If you want the best then the Flash is the way to go.