Can I talk About My Sporty here?
That scoots coming along nice!
That scoots coming along nice!
Last edited by Hackd; Feb 20, 2018 at 11:45 AM.
Omaha Try this before you lay out a lot of bucks.
It'll work
WP
http://www.trick-tools.com/icenginew...1625basic-7834
http://www.trick-tools.com/icenginew...1625basic-7834
Spent some time blabbering about that and other stuff on the new update:
The Best of Harley-Davidson for Lifelong Riders
The exhaust fabrication is off to surprisingly easy start. I'm honestly shocked at how smooth it is going so far.
Got the exhaust flanges fabricated and installed.
Been thinking about how I want to route the exhaust, and decided that the #1 factor was not wanting to spoil the graceful curve of the single downtube on the frame. With that in mind, I put the carb and magneto back on to see about clearance, and decided to route the front exhaust across the side of the engine. Pretty much tracking the position of the crossover tube on the factory exhaust.
That got me to the pie cuts. After doing a bunch of reading and watching YouTube vids, it pretty much came together. The trick is pick what angle you are using on your saw, and stick with it. The standard cut angles are 4.5 and 9 degrees. I'm doing everything at nine.
Once you decide what angle you're working with, you determine the radius of the curve by how wide you cut your pie sections. Make them so the thin side comes down to almost a point for tight curves, make the thin side wider for wider curves. From there, fitting is a piece of cake. Just cut some pies, and if your curve is too tight/loose, cut a few more either wider or narrower as needed. Since everything is cut on the same angle, they all fit together easily. You need sections that are cut on an angle on one side and cut square on the other to enter and exit the curve.
Test fitting is simple enough. Masking tape is strong enough to hold the sections together. So you can go through your trial and error without having to grind off a bunch of spot welds, etc.
This is the curve going coming out of the front can. There are about 12 sections under all that tape.










