You wont believe the power difference from the Polaris, the twin carbs add at least 5-10 HP. Polaris made a better engine anyway, that's why they are still in business.
Agreed. Ed's fire-breathing Polaris 440 got me started on this whole SnoMo thing.... What's funny was, I had in mind either a Polaris or an old single (easier packaging/less desirable-therefore cheaper) when I started the search! (Now I have BOTH!)
The Sachs fell into my lap and I "settled" for it, designing the rest of the trike around it. (To the Sach's credit, I was climbing to 60 mph with more to spare before things started happening.) Had I waited a couple of months, the Polaris would've been the motor. As it sits, I'm going to start cleaning the carbs, replacing hoses and wires, and get IT ready for the project. The bores look beautiful and it's got spark.
Good thing this wasn't a 440... that'd be extremely stupid on something like this.
To get it to work, I'll need to modify the mount, (do-able), the muffler/pipe, and the throttle cables. I even have a Polaris TX tachometer I can wire up!