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Already working on that.

I wish I could get my hands on a bunch of those RB523 carbs.

I still wouldn't do it because the tolerances run in for the viscosity of the fuel your using. Going thinner after a thicker fuel can hurt the engine after run or not.

Just to let you guys know. Never store your fuel on the ground, put it up on the shelf in a dark closet and it will last for at least 1 year. Nitro content will be less though.

The lesson to be had here is stay with the same fuel throughout the life of the engine. It's not a nitro % thing it's a viscosity thing. You can go from a thinner fuel to a thicker fuel but not from...

Running without the deflector will allow your pipe to resonate where it's supposed to and with each pipe it will differ, but you can loose up to 10,000 rpm. Milo4, the harder the pipe the faster it...

Doesn't make much difference if your running on road. Helps a little in off road.

The tan is a hard coated pipe. It will resonate quicker and resist hard knocks.

yep nice pipe but get rid of that deflector.

The .21tm is a short lived engine that won't have the top end speed of the Nova .15. A big block bore in a small block case is not a good combination for many reasons.

I would have went with a Modded Nova Rossi NS15S5, Buku clutch with a THS1030 Pipe and that thing will scream.

Show a pic if you can where it is hitting. I had to grid the outside of the carb body also depending what car it's going in

THS 1015 if the engine is stock and 1015T if not. Best pipes I found.

They work great, they are a 7mm carb. RB523tm carb are good if you can find one and they are 8mm. I just turn what ever carb I have down to fit.

Me2 Lololol

LOL I'm sorry guys I read that and back washed my Coke. I normally don't say anything but..... The Devil made me do it.

Oh and by the way the answers are:
How did you balance the crank? What...

"MY BALANCED ASSEMBLY ROTATING EASILY"

How did you balance the crank? What method? How did you compensate for the inertial build with the rpm range on a single cylinder engine? At what point did...

The pipes you are using are holding you back. Take a look at this one....

I can tell by the sound he has a harmonic mismatch. That pipe is not letting the engine rev and I would stick a bigger carb on it. THS 1030 pipe
http://www.youtube.com/watch?v=yVxdw8jM71M

It is also made for drag racing IMDRA 132ft. It seems that people are doing what ever they want with it and that's fine too. Having fun is what it's all about, Never stop experimenting.

This guy was not running 55% fuel, He was not running the RB523 carb which is the 8mm and he was not running the right pipe and he was not running a RBMod.

It was designed for 132 ft drag racing. People are just doing their own thing with them now. I say just have fun no matter what your doing.

http://www.youtube.com/watch?v=1msTijuRTJo
I would use a THS 1030 pipe with a RB523 carb and a new 7 port 3.3 Piston and sleeve experiment.

What type of mod did you put on them? Torque or velocity? At what point and axes did the inertia start to build?

The dual head is made for 50%+ nitro and you should try a THS 1030 pipe and a RB523 Carb.