So I´ve got myself a Motoconfort Scout 50cc from (probably) the late 1940s. Girder forks and a rigid frame. Originally it had a separate 2 speed gearbox. Not sure how much power these made originally, but I doubt it was more than about 2hp. Mine is a total barn find - lots of French farmer style repairs, three paintjobs and generally ridden into the ground.
Rather than scouring France for original parts, to end up with something very slow, I thought I´d try and fit an MBK AV10 motor, so I could have some tuning parts and general spares availability. I´m still working on making the motor pivot, so i can use a variateur. This is tough as I can´t hang the motor, as it is in an MBK 51, I will try and make it pivot from below instead. I also needed to find room for the pulley, as the bike never had one originally. It´s a bit of a juggling act trying to work out alignment and I had to remake part of the frame to get some clearance.
I also decided to use 26" wheels on it, instead of the oddball original size, as there aren´t too many tyres available in a 600A. The new wheels are a bit bigger and bulk the bike up a bit. Fat tyres will probably help the ride too. I found some better hubs and alloy delivery bike rims and thick stainless spokes and built the wheels myself. Not done it before, but it came out pretty well.
I need to source a carb and exhaust, to see how i´m going to fit it all into the frame. I bought a brand new AV10 motor and I´ll probably end up using a Doppler exhaust, because it´s pretty straight and has the rotator at the head, which should be really useful for lining it up. My question was, what would be a good carb and inlet to use with a stock motor and this exhaust? I´ll quite likely do some more tuning on the motor later on, so I´d like to keep whatever carb I buy. Something that would maybe work with a 70cc kit later, if needed, would be good. Any suggestions?