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Posted: Sun Jun 08, 2008 8:30 pm
by thedeatons
So, I am nearing the rebuild of my ported 432 to go into the E440 I have. The head was ported by Timbo, and I plan to use a Cyclone velocity stack, with no airbox. The bike will be used for commuting on the street, and will get a paddle tire for the occasional desert trip. No water holes will be involved, so I am not worried about water entry.

This biggest problem that I have seen so far is the lack of room for a giant air filter, which is needed to optimize aiflow into the Cyclone. On the quads we use a TRX250R filter which is pretty big. No chance of fitting one of those on the bike. My friends have used a short dirtbike velocity stack inside a mandrel bent 90 degree piece of stainless tubing, with a tapered cone air filter on the end, but the filters have to be pretty small to fit between the frame spars.

I have this custom made filter leftover form a Moto project a couple years ago, and I realized the other day that it may work great for the Cyclone/dirtbike project. No-Toil made it for me, custom design using my drawings. It only cost me $21 and I am sure they could duplicate it... Thoughts?

P.S. I may have to send it back and have them install a larger flange for the Cyclone, I am basically showing this as an option of what we could do.

Posted: Sun Jun 08, 2008 10:50 pm
by UpsMan
I have to say I never would have thought of that!

Posted: Mon Jun 09, 2008 12:04 am
by Easy E
It looks good - given the small amount of space between the bike frame spars, a fully custom unit would be a great way to go.

Posted: Mon Jun 09, 2008 12:43 am
by fig
Good idea James. It should work good.

Posted: Thu Aug 07, 2008 10:41 pm
by thedeatons
I will have an update on a working, dyno proven idea from Canniboomer soon... Stay tuned.