The MSVA regs states the handbrake must be operated by a seperate mechanical system. A cable operated caliper would qualify. Many,
many years ago, my first bike was a Honda CB200. I vaguely remember it having a cable operated front disc.
Here's our chart of what wheels fit. You're looking for 4" PCD.
PCD chart n stuffAs I've said several times recently, in my, (very), humble opinion, the axle gear ratios really don't mean a lot once you take the running gear out of the original car & start adding a lighter frame, less bodywork, less passengers, a better breathing engine, different sized rear wheels etc. I've no idea what any of the axles we've used have been stamped with -never looked, but they all perform more or less the same.
We aim for around 2
4 inch tall rear tyres. That gives us 3 good useable gears, with 4th as a kind of overdrive, once you get up to motorway speeds. Also gives us a good range of wheels to choose from -14 or 15 inch diameter, depending on what profile tyres we pick. That sort of diameter also looks in proportion to the rest of the build -I personally can't stand trikes with tiny rear wheels. They just look... wrong.
You can make up adaptors to change the bolt pattern, rather than re-drilling the wheels or hubs.
My own trike uses 235 tyres. Taz's has 265s I think. Purely personal preference. The skinny tyred look seems to be coming back in now. Id've thought skinny tyres would follow the ruts in the road more than fat ones?