5-7,
You probably have a stronger build with using the 8mm chain for the engine to drive on. I run 1/2 x 1/8 BMX chain on mine. The disadvantage is I don't think(but not sure) it is as strong as 8mm chain, however the advantages is that it is easy to come by and I don't have to wait for it to come in the mail and it is readily available if I break down at any bike shop. I can also use a standard rear derailleur wheel to make/fashion a chain tensioner wheel.
If you do not have one of these, I highly recommend trying to make one that will mesh with your 8mm chain. It is best to run it on the right/front side, not the load side, and you will find your drive chain falling off the chainring problems subside significantly.
Hope this helps,
You probably have a stronger build with using the 8mm chain for the engine to drive on. I run 1/2 x 1/8 BMX chain on mine. The disadvantage is I don't think(but not sure) it is as strong as 8mm chain, however the advantages is that it is easy to come by and I don't have to wait for it to come in the mail and it is readily available if I break down at any bike shop. I can also use a standard rear derailleur wheel to make/fashion a chain tensioner wheel.
If you do not have one of these, I highly recommend trying to make one that will mesh with your 8mm chain. It is best to run it on the right/front side, not the load side, and you will find your drive chain falling off the chainring problems subside significantly.
Hope this helps,