Kinda reminds me of the GTU/GTO classes from IMSA

Dennis
So is this JPX12 based on the Novarossi RR12L3?? and consequently the new Mugen X12 is a long stroker as well???
or is it a new version of the venerable MT12 long conrod.???
AFM

There must be 2 different X12's then, because the one I saw was an NS12 with Mugen badging. Any info?

Hi Uriah, long time no hear. Saw you got up to "B" mains in the winternats, but had trouble with a plug and coudn't make to the "A" main.....Next time man, there's allways a next time..

Going on to the issue of the Mugen.....Yeah I thought the same, that the new Mugen X12 is based on the Novarossi NS12S3, so where does this mistery "long stroke x12 " appeared from???.....Unless they put all the internals on to an MT12 casing, using the old long conrod...and voala.... you get a long stroke X12. Could it be possible????
AFM

Nope, if you put the sleeve in a MT12 case with the long rod than you have a long rod motor but not a long stroke motor.

Stroke is only affected by the distance of the crankpin from from the axial center of the crankshaft, not by the length of the rod.

I don't think Swauger's engine was a long stroke,it definately sounded like a NS3, just on steriods;)

Yes you are right, and strictly speaking all Nova based engines are long stroke, but I think in the common jargot we are used to call the MT12 long stroke to diff. it from the short rods that came afterwards and now. As a matter of fact we should call the RRL3 a "longer stroke" Nova. There is no "short stroke" or "square" Nova.
AFM

AFM,check your PMs.

My understanding was that the X12 was based on the RR version of the novarossi not the NS, on antoher note I don't see the x12 mugen as available fron jp yet on their site.

The technical data on the Mugen USA site indicates that it is based on te NS3 not the RR

http://www.mugenracing.com/X12.htm

Dennis,

I have a question for you.

I stripped a head screw thread on two different Picco engines (curiously the same screw on both engines) and I was wondering what you would do to repair this.
a.) Helicoil?
b.) drill and tap for a 3.5mm screw?

Have you ever done this before?

Thanks,

Stefan

bump

Well no racing last weekend. Hope to see some sun back
for this weekend and get back to racing. :tire: :tire:

Dennis whats a good starting point for head clearance for
.21 jp's and how much can i shim up or down from the starting
point. thanks.

Hey Dennis,

You have PM.

Mark

.21?? Francis, are you planning on racing 1/8th scale?

yup i'm getting the 1/8 ready for the final race of our points
series.