A gibbon has worked on Mine at some time .
I intend to strip it right down and start afresh ..
As far as I know the frame is straight as the bike runs without pulling to either side but I would like to check this whilst the engine is out .is there a specialist in the North West area offering checking and frame straightening services that the forum can vouch for please ?
The forks have apparently been rebushed according to receipts ..is there any issue I ought to be aware of when I strip these down ?
The back half of the frame is the most likely part to be out of shape...The quickest test you can do is to remove and replace the complete rear wheel...If you have to force the rear part of the frame open to get the wheel in, or conversely the frame has to be pulled in when the nuts are tightened there may be an issue...If you look on the technical section of the website there is a checking gauge shown and information on what to test under 'Frame alignment gauge'....
The front sections don't generally bend unless the bike has been run into something and that will usually show itself when the engine plate studs are removed...The frame will then spring into a different position as the bending forces are released causing misalignment between the frame stud holes and the engine plates...Also look for any slight bending of the top or down tubes...They should both be straight and a quick check with a straight edge laid along the tube will show up any problems there....It is highly likely there will be some, or a lot, of wear in the frame where the stand pivots as well...Ian