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Turbo tops have a bigger head volume than a standard top. So you will move the power band up to a higher rpm.. I have not seen an increase in peak hp.. The difference is quite big, so if you run a turbo top you may have to change your propp and pipe length.

How fast are you running your twins? Can you come off and on the pipe easy with this speed?

0.06 i make them for all my boats, fe 21, 21, 45 and 90 SGX

Why? titanium is not very rigid. its way better to use hardned steel 50-65hrc

I run mine at 13" :) very easy on the pipe and good speed.

Yup, can post tomorrow.

I will race mine 11. may :) all the other boats are sgx

How mutch nitro and what propp are you running?

Sweet!

Jup!

Got the boat today, looks better in real life! Joel is recomended by me, if you need a JAE boat, or anything with wood in it :)

It is a long time since I bought it, cant find the site.. 15mm wide. But this will do also http://www.beltingon...generation-258/ Dont use any cheaper belts... They will break... only use the best. Edit, think it was from elfa, site from sweeden.

dimensions or from what manufacturer?

i used this page for information http://www.tdkmotorsports.com/dyno.htm Did the machining at my job

No, i dont think i need a centrifugal clutch, it is easy to start and runs fine on idle. After the pull i can let the engine back on idle or stop it while the flyweel is spinning. 20mm one way needle bearings can be used over 20k rpm, my flywheel does not spin faster than 6-7k rpm. The one way...

No, belt drive works perfect Yup, one way needle bearing. I have done 25k rpm on the engine, 5,2k on the wheel without any problems. Yes simple and good, only an rpm sensor at the flywheel. The load is the same every time you do a pull, so you se difference in engine setups very easy. I had...

Here is my dyno it is a inertia dyno and works very well for this type of engine. The flywheel is a 10kg 11.8inch steel plate. Gearing is 4.8-1 The graph before the pull is with longer pipe setting..

!!!!

Good! :)

Im 19 :)