I had already dropped the parts off when I saw this, but that slug would have been perfect! Nice to know it is out there. I'm sure like everyone else here, I'm half way through this build and already thinking about the next one or next revision.
This is a total spare part job. So I will only buy something if there is no way to salvage something I already have. I got the trike super cheap on craigslist, the trolling motor and battery setup are left overs from an old boat I could never get titled and the drive sprocket is off of a kids bike that got salvaged for another project. The only piece I have bought so far is the freewheel. Obviously I would have bought the slug if I could have before, but no worries, (I hope to get a pretty good deal on the custom cut one).
Also, because i don't think the trolling motor has enough torque to get this thing off the line and a real fitment issue, I went with a 36 tooth sprocket on the axle. Which is being welded on the axle Monday or Tuesday next week. The sprocket on the motor is a 16 tooth and the bike has 20" tires.
Now, I used this calculator
http://www.gokartsupply.com/ratios.htm but again, I am really a rookie at all this. but the math claims a peak speed potential of 37 MPH. Which the trike can NOT handle. No suspension, the only brakes on it are a drum brake in front. If this thing doesn't burn up on the test run I will look at a disc brake setup for a rear tire. For now, the goal is 20 MPH with my ass on it, and hopefully make the battery last for 20 miles. The battery I have wont take a charge now so I may go to a smaller battery setup but for now I figure I need to get it together.
^