You will most likely find that the drum has worn, so new shoes will be to small and the wrong radius, best to check size and have oversize linings fitted. Nick.
What you need to do is skim out the wear lip, you can do this by mounting the wheel on spindle and clamp the spindle in a workmate or similar, then spin the wheel and grind out the lip with a dremel. You can then fit oversize linings, I use Villiers services, tell them what size linings you require and that it's for a trials bike, costs no more than buying a standard set off shoes.
Hi Paul, as a rough guide ex is 35 to top of port 52 to bottom. In is 68 to top and 87 to bottom.trans is 42 to top and 52 to bottom, all from top mating surface.
Best bet is to get your shoes re lined with oversize linings at Villiers services,as the drum will be worn. Measure your drum and work out what thickness lining to use, I think they do .5 mm increments. Any new shoes you buy will be to small.
Loughborough club have a trial on next Sunday at Vickers farm near tilton on the hill. You could pop along and watch for a while if you don't have your bike fixed by then.Check website or facebook page for details.Nick.
I replaced the piston on my sons 98 TXT last year, it was still on the original piston and I only replaced it because you cannot buy the rings separately, it was worn but not excessively !
Hi Dave, if it has an original piston, you cannot buy the rings separately, a new piston with rings + gaskets and maybe small end will set you back around £180.00. Nick.
My niece started on a beta 50 when she was 12 but she had a ride on my sons gas gas 125 once when she was 13 and would not ride the 50 again ! She now has her own 125 gasser, so I would say go straight for the 125.
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Try this guy.