I recently restored an early 90's DynaTech (see Project DynaTech Build Thread) and very recently decided to use this bike as my main steed - retiring my modern alloy frame to the shed.
I fitted my carbon hoops to the bike - the rear of which has a 135mm hub width. I was out for a cycle and the wheel pulled itself out of the rear dropouts when accelerating from a stop. I did have the skewer nice and tight.
Last night I machined the hub axle down to 126mm and it slotted sweetly into the rear drops (no need to spread) and lined up perfectly. I tightened the skewer (QR) as tight as I could (the skewer is not defective BTW) and went off for a jolly test run. All was fine for a few miles, then it happened again (pulling away from a junction the force of the chain on the cassette pulled the wheel forward - out of the dropouts).
Any ideas? Has anyone experienced this? The angle of the dropouts certainly doesn't help, as they allow the wheel to move forward (my alloy frame's drops are vertical). However, there must be a solution to this problem.
The dropouts were painted - should they be bare metal where the skewers and spacers come in contact? Also, do any of you use serrated spacers? Maybe these would help. I also found some of these on Ebay but want to be sure before ordering http://www.ebay.co.uk/itm/Sturmey-Arche ... 27c57466f7
Any help appreciated for a retrobike newbie!