Honda P50 “The Little Honda”
Well it appears I now own several more mopeds than cars. I never thought I would enjoy riding one but I do. As always this is an infill project till the Viva GT is ready for its next phase of work.
As you may or may not of realised I do own a BSA Ariel 3 trike, which I have been using as often as I can building up the miles and getting all those little jobs sorted (I lie as lots still remain). As one does late at night whilst sifting through the endless adverts for junk on eBay I came across a Honda P50 in green, it looked loverly and I sent in an offer, which was accepted!
Here it is in all its glory, as advertised.
It was collected last week, and found to be in almost as good a condition as the images, all be it everything was obviously in a just put back together condition. Lots of hand tight nuts and or clean threads. There are two ways to look at that, either its been restored or its been hastily put back together without restoration. In this case its the later and needs some work.
Nick and myself tried to start it as soon as we got back to the house, but it wouldn’t go, we were more inclined to have a ride out on the Air 3’s so we left the Honda.
Later in the week I moved the bike up to a Friends garage, (fellow Viva Nut) and we proceeded to look at why it wouldn’t start in more detail. Some tests of compression and electrics confirmed most things were working, but the tank was full of rust, the fuel lines solid with dirt and the carb full of the same said dirt. Some easy start did however get it to fire for a few seconds and things were looking good.
After christmas I returned to the garage to work some more on the bike, in the mean time the carb had bene stripped and cleaned out, The O’ rings were perished and the float damaged but things were at a point where we could re start the bike using the freshly cleaned tank, and a bit of petrol. It just wouldn’t start!
We soon realised that the decompression valve was opening too far and pushing the exhaust valve off its rocker so the engine wasn’t getting full compression, removing the decompressions cover from the engine enabled us to start the engine. Success the cable need adjusting and the engine runs.
A few revs of the engine and its sounds like a typical 4 stroke Honda engine, then disaster its stops and will not rotate! No matter what we do the rear wheel will not turn. The engine isn’t seized as its rotates back and forth maybe 3/4’s of a turn. the piston moves up and down, the valves operate, but the rear wheel is locked solid. There is nothing more to do but remove the rear wheel and see what is jamming it up!
The wheel was brought home for me to strip it down. First thing first remove it from the Rear wheel, which is just a matter of removing the nut and sliding the whole assembly out of the wheel. Very simple and a good design. Here is the engine assembly before its strip down.
The strip down then commenced, which has been not resulted in explain why it seized, as everything is turning and not too worn. Now I await a gasket set before I screw it all back together, and refit it to the wheel and back in the frame.