rcindia O.S. RP6 for GT8 on both 16 or 25% nitro. O.S. plugs have always been better than Novarossi plugs - most have used them in Novarossi engines for years.

https://cimg4.ibsrv.net/gimg/www.rct...b6c97efc6f.jpg

New One series is... OS based

"ONE" has all along been based on OS, whereas Capricorn's other engine line "Tesla" is based on Nova

Touchè I was thinking of Tesla, their old brand...

https://cimg8.ibsrv.net/gimg/www.rct...c78d03bec6.jpg

Last weekend I did an on track oilbath break-in of a new MAX RP9.5, the one with the black/gold head. This one has a different conrod which I was told made by Hudy, and with probably a serial number als also saw the number 4.8 on the rod. I did not take the whole engine apart to meassure it but it looks like MAX is now using an 4.8mm crank pin. If so, then that will make the new MAX rod not useable for Nova engines.

I placed an order with Novarossi Direct, the USA distributor, a few weeks ago and my order was, inexplicably, canceled. My guess is the factory has shut down for good, or is about to. Shame really. I'm not longer using Nova motors, and haven't for a couple of years, but their exhaust springs and gaskets were the best ones I've ever used.

I actually messaged them through their site and asked if Nova was permanently closed its doors. Did you get a explanation for the order cancelation?
https://cimg8.ibsrv.net/gimg/www.rct...33dc9c5cc1.png

same . Sent a message and they said they haven’t received any new shipments since May

Yes, the Max RP9 uses 4.8mm. Here is a comparison to the Nova R4/18 rod. It is also shorter. I think you will find soon Max will start producing parts for Nova engines considering he has a lot of the machinery.


https://cimg5.ibsrv.net/gimg/www.rct...c3d8fc182.jpeg

Hmmm..... shorter. I believe the OS rod is also about 1mm shorter and has the right hole dimensions for the Novarossi piston pin and crank pin. Changing a sleeve to get it lower is no problem for me so when I do need rods I can go to OS with a small modification to the sleeve.

But yes, as MAX also has older Nova based engines I will believe he still can provide the rods.

About the difference in length between the R4/18 and the Max 07999 conrod, I think it is due to the difference in the bore x stroke of these two engines: With the engines that uses the R4/18 rod (eg the Mephisto and Mito 9) at 15.88x17.60 mm, while the Max RP9 is at 16.26x16.80 (same as Mito WC that uses the r4/17 conrod). Whereas the OS bore x stroke is 16.08 X17.20mm

Bore and stroke has nothing to do with the needed length of the rod. Novarossi has used the R-rod for all their engines for a long time, Also the P, O and C rods have the same hole distance but a different crank pin dimension.

I am not sure that is a bright idea because the rod angle will be greater during the stroke of the engine. That could cause problems, especially during high RPM. I would expect more rod failures using this idea.

Yes, but we are talking about nothing more than 1mm on a length of about 30mm. A shorter rod will indeed give a larger angle but it will also give a faster compression build up near TDC and a higher pressure under the piston. But I think the most important of the choice to go different is aftersales.

I saw this on a Facebook group. Anyone know more about this?