The thread on adapting a Miata tranny to a bike engine coupled with this from the Duratec lighter flywheel thread has me thinking.
Don't worry, the smoke you smell will go away once all the cobwebs are burnt off. It's like the grease that's built up on an old unused stove burner. If it bothers you just turn on the exhaust fan over the stove.
john hennessy wrote:
just a thought, does anyone make a smaller diameter 2 or 3 plate clutch, because its not just the flywheel weight, it's also the clutch and the amount of mass at the outside edge.
That's what I was thinking too. I know that I have heard of these smaller clutches in race engines, I just don't know which ones.
I have a complete set up to allow me to build a BEC using the traditional method with a chain drive connected to an diff, but were you aware the Harley and S&S type motors are dry sumped so I could turn it 90 degrees with no bad side effects and they have dyno plots very, very similar to a Miata engine?
That means I could ditch the tranny (it's separate) and figure out a way to connect the output shaft to a tranny (or longitudinal transaxle) and come up with a sturdier clutch and tranny package. Yes, I realize the car tranny is WAY heavier but clutches and trannies (whoops, now I've brought sex into the equation) don't seem to last long on BECs. (WOW! that's a picture I won't get out of my head any time soon!)
I happen to have a spare RX7 5 speed just sitting there begging to be used and abused.
I'm not quite ready to begin that build, but it's time is coming soon and it seems that once people mentally commit to a certain modus operandi it's de rigeur they begin a thread even if it will be ages before they begin - so why should I be any different?
At least there won't be any goats in this thread, although people here are all the time giving away previously loved goats on Freecycle. Also you don't have to answer all those questions like you do on Match.com or eHarmony.
So back on subject, what does anyone know about these smaller diameter clutch set ups? It would seem that they would be more durable than a motorcycle clutch for pulling all the extra weight and yet give less mass for the motorcycle engine to accelerate and therefore give more bike like characteristics to the engine. Not that the S&S engine is a real revver.
This would also solve the super high 1st gear issue on a bike tranny.