Ceramic muffler packing > stainless scrub packing > fiberglass packing. fiberglass is cheap but breaks down. Stainless is bulletproof, but is heavy. Ceramic fiber is the tits, but costs more.
Making the muffler strong enough to support jacking off it is crazy on a bike. You’d end up with a muffler that weights ten times what it should be just to do a job it shouldn’t have to(AKA buell). Make it light. Why weigh the bike down with unnecessary pounds.
While the layout may be simplistic in comparison to a car, you’re going to find tuning reversion on this bike far more finiky than your typical car stuff. Less # of cylinders = stronger wave pulse per cycle. Obviously your best bet is to get it as close as theoretically possible to the RPM range where you expect/want to make the power, but I wouldn’t try to make it 100% perfect as it’s going to be very difficult to do so. You’ll have to factor in the intake reversion, VE, etc. Honestly, find what ducati worked into their system and base your stuff off that. Ducati is VERY good with this, much like BMW is on their cars. They’re torque bikes, not high HP so keep that in mind.
Your concern about the bends is diving into fluid dynamics and is more complicated than it’s worth. Calculate the total length of the runner using the CLR and be done. On this bike we’re talking negligible differences between the two routes.
I like the project idea.
He said jacking off. :rofl
Link me to some bad ass ceramic material, It cant be that expensive, since I only need a little bit.
RGR that on the bends, just measure the center line radius and make the length correct.
Well, if I use the calculator I get a 2" dia and 32" length. If I use the formulas on the PDF/book I get 1.65" and a 30" length. for aprox a 6500 RPM
SO, i will measure what the stock pipes are and see where they lie and go from there.