Scooterotica

Can someone let me know te ring gap for an rb20, i think it might be .5 but im not sure.

Thanks
sef

I think it's on afs site

jonashford wrote:I think it's on afs site

had a look on AF site but couldnt find this info. anyone know or point me in the right direction

ta

According to the fitting instructions 0.6mm (0.0025") is the gap at which the rings should be replaced

http://www.afrayspeed.co.uk/index.php?page=Per_rb22

rosscla wrote:According to the fitting instructions 0.6mm (0.0025") is the gap at which the rings should be replaced

http://www.afrayspeed.co.uk/index.php?page=Per_rb22

Thanks for that, looked at that page but couldnt see it for the life of me. New Rings are giving me .5. I guess thats near enough....

Just so it's clear that is the gap they recommend REPLACING the rings at.

0.3 is good but never less than 0.2,

muppet,

An easy way to remember is approx 0.1mm per Inch/25mm of bore.

Muppet wrote:0.3 is good but never less than 0.2,

muppet,

I replaced the AF piston that came with the kit with a DT175/blaster piston. Bloke was shutting down his motorbike shop and had a box full of nos pistons that he had knocking about since the 80,s he pulled 2 of these out and said these should fit which they did. Both me and my mate stuck in our rbs to see what they were like and both bikes went better than before so we kept them in. Only cost a £10 as well....

Anyways when we went to replace the rings the gap was just under 2.0, with the new rings the gap is back down to 0.5
Im guessing that as its no longer an AF barrel this would explain it not being 0.3 with new rings. Thought it was a tad low on compresion....