New to the banshee

[dieseltwitch]

Hey every one a bit new here so i took some time and did some looking before i decided to post this.

So i bought a banshee back in 2000, rode it for a year and blew the crank on it. then i went into the army and haven't had any time to do any thing with it, well i just got out and started to tear it down. now im wondering where to start to build a good bike.

 

not too worried about the susp. or the frame just the motor!

There are a few things i do know.....

I HATE CARBS! - Going EFI!

i want good power but more so reliability! i've been looking at the 400cc Cheetah kit. any good.

i need advice on cranks types. heads, porting, ignition, bla bla bla.....

 

Im not new to quads nor rebuilding. Im building a Supercharged YFZ500cc EFI and have worked on other 2 strokes such as a 800cc SX-R Jet Ski and a few snowmobiles here and there. im not an expert by any means but i do understand the 2 stroke theory

mostly i've worked on thumpers but i like to have more then one toy!

 

Thank you guys for any help you have.

 

PS. I ride dune (not really draging alot) mtn trail, & snow. hope that help

[Wallrat]

You might want to reconsider your position on suspension. A shee with pipes, filter, and some timing advance is a pretty fun bike to ride. After doing those mods though, I'd HIGHLY recommend doing the suspension! Then again since your engine is already toasted...

 

Keep it mild to start off with, but plan for the future. Search for 4mm or stroker on here and get some info about all the junk you'll need (there's been several threads in the past couple weeks). A 4mm stroker with some good porting will already be more engine than your stock swingarm can handle, so I'd recommend getting a +2 or +4, depending on what your doing in the future. You should have somewhere in the neighborhood of 70 HP at that point - anything more than that and even a +4 swingarm has a hard time keeping the front end down. Once you go beyond +4 you really start to sacrifice duneability so think wisely on that one. On the other end, you could get some new a arms/shocks that will move the front wheels an inch forward.

[dieseltwitch]

No no i AM doin the Sus. and doin a few other things. but for the most part i just need help on the engine! thanks on the swing arm advice i was pondering how far to go out. one thing i did have a question on was as you push the swing arm out the back you start to losse traction dont you? the whole lever thing! is 4 out the best IYO?

Edited April 13, 2007 by dieseltwitch

[dajogejr]

You are correct....once you start going back with the arm, you will lose traction.

That's when different paddles come into play.

 

You need a long enough arm to keep the front end down, but...you need enough paddles to get traction to where you're not slipping too much...

 

Then you have to factor in gearing, rider weight, height of the paddle blade...yeah, it's fun.

A lot of trial and error..that's where research comes into play. Read up on other's setup, engine mods, etc., and make your best guess on what you're gonna need.

 

For example. 70 HP on a stock swinger, you'd need 7 or 8 paddles. Any more, would be too much traction (and 70HP on stock swinger is too much anyways...) But...once you go 4 inches out, you could go 8 paddle extreme (taller blades) or 9 to 10 paddle with shorter blades.

 

Then, you could gear it up one in the front (from 14 to 15) so it's not as violent out of the hole, and it would cut down wheel spin.

 

That's just sneak peak of the choices you're gonna have to make!

[dieseltwitch]

You are correct....once you start going back with the arm, you will lose traction.

That's when different paddles come into play.

 

You need a long enough arm to keep the front end down, but...you need enough paddles to get traction to where you're not slipping too much...

 

Then you have to factor in gearing, rider weight, height of the paddle blade...yeah, it's fun.

A lot of trial and error..that's where research comes into play. Read up on other's setup, engine mods, etc., and make your best guess on what you're gonna need.

 

For example. 70 HP on a stock swinger, you'd need 7 or 8 paddles. Any more, would be too much traction (and 70HP on stock swinger is too much anyways...) But...once you go 4 inches out, you could go 8 paddle extreme (taller blades) or 9 to 10 paddle with shorter blades.

 

Then, you could gear it up one in the front (from 14 to 15) so it's not as violent out of the hole, and it would cut down wheel spin.

 

That's just sneak peak of the choices you're gonna have to make!

Cool thank you very much. i've been doing alot with weight transfer calculation but not having a built bike to work with it makeing it a bit harder!

but again thank you!