GRC RX going 50cc

I just got my 50cc kit in today.A new 50cc BZM pipe and new piston and cylinder.
The pipe looks a lot bigger than the old one,hope it works!
I also ordered a 21mm dellorto.
My goal is to break the 60 mph's this time.The bike has gone 51.3 already........Doug

Here are some more pix.Minimotopilot.

Wow, it's hard to tell the difference there, Doug. Thanks for posting the additional pictures though.

Hey Doug, Would you mind posting a couple of pics of the bottom/inside of the cylinder so the ports can be seen, it would be much appreciated.

Jimmer

can i ask were you got the carbon bits from and the red calipers .

what size sprockets are you running to get your speeds

From A guy in Hawaii.The red calipers were painted by me...

I would love to see those pix.....Doug...

Oh 7 66 rear!

got pics of the motor .

is it possible to have the details of the bloke for the carbon bits .

It's that the record holding motor?Because that would be pretty cool.If in fact that is the motor I would keep and run another motor on the bike.....Doug...

minimoto monty what size carb is on the motor you have there?...Doug

its runnig a 20 at the mo going to get a 21 . the whole engine has been ported balanced and moded inside

too bad your already ordered the 21mm, i have a brand new one for sale!

How Much Do You Want For It?

Here are some pix of the carb....Doug...

Black? That's a nice looking carburetor, but I just noticed in your original post that it's the 21mm. Good luck correctly tuning that thing, my friend. IMO, that was a big mistake.

Had one that I was going to use on my previous Malossi topped Steel GP and got rid of it a few weeks later. They're just nearly impossible to contend with.

I 've heard they are imposible to tune right,Im going to talk to Tom tomorow to change it to a 20mm an carb!!!!!!!

Dang .....20mm still hella FAST . Good looking bike Doug.

I would recommend the 18mm, but that's definitely a nice looking carburetor. First time seeing one in black.

I did some research and that black carb is a racing model..It is not a regular PHBG model.It it also a 2 stroke model......Doug.....

What ever that means!

that carbs not a dellorto is it

Yes it is,
Black coloured carburettor body for cataphoresis painted
- Choke: Ø 19 or 21 mm
- For 2 stroke engine
- Screwed aluminium valve cover
- Piston-type chrome plated throttle body
- Oil intake joint
- Vacuum joint
- Indipendent starting circuit
- Idling sistem with jet and mixture adjusting screw
- Main circuit with mechanical adjustement by means of a conical needle
- Aluminium float camber with central screwed plug for an easy jet's disassembly
-Elastic fitting connection Ø 25
- Air inlet connection m32 X 1,25 mm for trumpet or union assembly