As I had the opportunity and access, whilst changing my rear wheel bearings, I decided to get on and finish my fully enclosed chain case project. I was getting a bit fed up with the lack of protection of my drive chain, and the fact that it was starting to get a bit rusty in places, despite having suitably lubricated it and not riding the bike much recently, with the rotten autumn weather!
From previous experience for 9 years, with a fully enclosed chain drive on a previous bike; it's a bit like having shaft drive, with very low maintenance, and much longer life; with very little chain adjustment maintenance to be done over the drive chain life.
I did a bit of research on old Royal Enfields, and found that fully enclosed chain cases were fitted on some of their Meteor Minor, Super Meteor and Constellation models. Unfortunately nothing is available new or second hand to fit now.
So using the existing chain guard, some carbon fibre effect 2mm thick high impact plastic sheet, some off cuts of metal strips for support brackets, some 3mm and 4mm diameter bolts and nuts, and not forgetting the bottom chain case half which is an old second hand modified Honda GC125 part, where I've even managed to keep the chain inspection hole with it's plastic blanking plug.
The original Honda part needed quite a bit of twisting and fettling to get it to the right profile for the swinging arm!
The positioning of the chain case body securing screw head sizes were critical, again to avoid rubbing the drive chain. All the joints were finally sealed with flexible sealing compound, and the chain case securing bracket plates were secured using rubber mounted 4mm diameter bolts,to reduce vibration stresses.
