With the weather on the turn and the nights drawing in, I decided that I need to get my old Basso ready for turbo trainer action. It was getting clunky last winter - worn jockey wheels, worn rear mech etc. I had forgotten that the bike has semi-horizontal rear dropouts. I noticed today that they looked suitable for a singlespeed conversion. I have been getting on well with my Specialized singlespeed bike on the road and fancy similar simplicity for turbo use. I can vary the resistance on the turbo so I don't need gears on the Basso and it isn't needed for road use now so no point in keeping all the old worn parts on it. I took those off and gave the chain a superficial clean. The bike itself could do with a good clean but I wanted to get it on the work stand and try to see if I could singlespeed it without using a chain tensioner (or the old rear mech to do that job)...
It turns out with the worn chain I can just get it to work with the wheel axle at the front of the dropouts. I could really do with putting a half-link in the chain to be able to move the wheel back a bit, but I think I will get away with it for now. I'll buy a half-link soon.
It is nice and quiet with the chain going directly round the ring and sprocket, and no tensioner/derailleur involved. I may eventually decide to use the ss Basso on the road, and the Specialized (with its slightly noisy chain tensioner) on the turbo. I can sort that out later.
The little screws for the back of the dropouts are missing - the ones used to adjust how the rear axle sits in the dropouts. I have a vague memory of the frame having those when I bought it. I am a bit of a hoarder so they are probably in a tin or a drawer somewhere. I'll have a look tomorrow.
This is what the wheel looks like in the dropouts. With a half-link in the chain, I reckon the axle would move back nicely into that space. It is possible that a new chain would need 2 half-links (or leave one extra pair of links in the chain and swap for the half-link once the chain wore too much).
I'm sure there's some logic to that somewhere.... I just can't seem to find it!
A mate of mine used to be a mechanic in a bike shop. They charged £25 extra for working on dirty bikes! (The reason being that they
wouldn't work on dirty bikes, so they ended up cleaning them before working on them and charging for that.)