Love my HJR, dune-ported Banshee but it surely didn't love me. Shee threw me off & went solo into the trees but the power it delivered was surely life threatening & intoxicating....but now I have more repairs:( Good times!
Don’t know why people refer to that as the flywheel, it is a rotor for the generator and is listed as such by Yamaha. Yes it adds mass to the rotating assembly kinda like a flywheel but not by design, as a 2 stroke fires every rotation it is not as reliant on flywheel mass to smooth out power transmission between firing events. You can lighten a 2 stroke rotor without any major negative and more positives, if you lighten a 4 stroke flywheel it will become jerky on the low end due to the exhaust stroke. Also engineers have noted that you see more return putting the weight on the clutch basket allows for less bogging due to the rotating mass directly acting on the drive line, as weight opposite of the drive side is transferred through the crank increasing the twisting load on it.
@@herrjugsracing7816 yeah lol kinda figured that’s how it went. Great work by the way and I’m sure people appreciate you passing on your knowledge of banshee engines.
My daughter's boyfriend installed a pyramid reed set up from Duncan racing in my daughter's Yamaha blaster. He forgot or never thought to rejet....I believe it ran too lean. It has a full port n polish and 34mm intake along with a 34mm mikuni carb, it had a 10.3:1 piston. Installing a wisco pro lite piston this time. I'm sure it will loose a little hp. My question is any aftermarket exhaust pipe do you recommend? To help reclaim some hp?
Love my HJR, dune-ported Banshee but it surely didn't love me. Shee threw me off & went solo into the trees but the power it delivered was surely life threatening & intoxicating....but now I have more repairs:( Good times!
Ouch 🤕
Don’t know why people refer to that as the flywheel, it is a rotor for the generator and is listed as such by Yamaha. Yes it adds mass to the rotating assembly kinda like a flywheel but not by design, as a 2 stroke fires every rotation it is not as reliant on flywheel mass to smooth out power transmission between firing events. You can lighten a 2 stroke rotor without any major negative and more positives, if you lighten a 4 stroke flywheel it will become jerky on the low end due to the exhaust stroke. Also engineers have noted that you see more return putting the weight on the clutch basket allows for less bogging due to the rotating mass directly acting on the drive line, as weight opposite of the drive side is transferred through the crank increasing the twisting load on it.
Don’t know why the name just stuck and is how everyone refers to it.
@@herrjugsracing7816 yeah lol kinda figured that’s how it went. Great work by the way and I’m sure people appreciate you passing on your knowledge of banshee engines.
@@herrjugsracing7816 also how hard is it to find the perfect mix between port volume and velocity on 2 strokes?
Make some 521 videos
th-cam.com/video/qTPrzfqc9g4/w-d-xo.htmlsi=Ho06NBoKN1cNQQR9
My daughter's boyfriend installed a pyramid reed set up from Duncan racing in my daughter's Yamaha blaster. He forgot or never thought to rejet....I believe it ran too lean. It has a full port n polish and 34mm intake along with a 34mm mikuni carb, it had a 10.3:1 piston. Installing a wisco pro lite piston this time. I'm sure it will loose a little hp. My question is any aftermarket exhaust pipe do you recommend? To help reclaim some hp?
Biggest displacement on 91 octane build? Approximately how much hp?
I have done a 521 on pump gas. It made over 100hp on pump.
@@herrjugsracing7816 thank you for replying
Who do you use to nikasil the cylinders?
US chrome and millennium technologies