Well the trial wasn't the most sucessful as far as riding goes. I dropped the Tiger Cub in a stream in the second section and drowned it. (and me!) Thankfully ten minutes of kicking with the plug out cleared it and I was able to finish.
As far as the Twin goes though, I came away with plenty to work with. First off a couple of ideas to try, and second an order for some bigger jets from Amal.
Before I got chance to look at this, my rear axle arrived, so first job was to put its own wheel in instead of the Whitehawk's. A rummage through my spares boxes turned up a handfull of spacers to fix the wheel in a roughly central position, to be finalised when we see how the chain runs.
An old torque arm off a TY was shortened and pressed into service, and a cable adjuster bodged to hold the cable on the rear brake arm.
The second hand Tiger Cub wheel came with a nearly new 48 tooth sprocket, so this was my starting point for gearing. I have various old runs of chain which were good enough to experiment with, so cut one to the right length and fastened everything together.
With an idle five minutes I fastened the mudguards on. The alloy ones look fantastic, but don't crash as well as plastic, so a pair of white Universal were bolted in position. These may get swapped for better looking ones in the future, depending on my mood.
I will get the front brake cable sorted, honest!
The new jets had arrived, so I put the next size up, a 160, in and wheeled it outside to try. This was much better, but still hesitant just off tickover. I put the 170 in and with a bit of tweaking on the air screw got it to nigh on perfect.
A quick celebratory blast up the farm track and it sounds glorious, with an evil cackle on the over run. Very un-trials bike like!
Unfortunately the gearing is too high, so next on the shopping list is a 54 tooth sprocket!
Mark
As far as the Twin goes though, I came away with plenty to work with. First off a couple of ideas to try, and second an order for some bigger jets from Amal.
Before I got chance to look at this, my rear axle arrived, so first job was to put its own wheel in instead of the Whitehawk's. A rummage through my spares boxes turned up a handfull of spacers to fix the wheel in a roughly central position, to be finalised when we see how the chain runs.
An old torque arm off a TY was shortened and pressed into service, and a cable adjuster bodged to hold the cable on the rear brake arm.
The second hand Tiger Cub wheel came with a nearly new 48 tooth sprocket, so this was my starting point for gearing. I have various old runs of chain which were good enough to experiment with, so cut one to the right length and fastened everything together.
With an idle five minutes I fastened the mudguards on. The alloy ones look fantastic, but don't crash as well as plastic, so a pair of white Universal were bolted in position. These may get swapped for better looking ones in the future, depending on my mood.
I will get the front brake cable sorted, honest!
The new jets had arrived, so I put the next size up, a 160, in and wheeled it outside to try. This was much better, but still hesitant just off tickover. I put the 170 in and with a bit of tweaking on the air screw got it to nigh on perfect.
A quick celebratory blast up the farm track and it sounds glorious, with an evil cackle on the over run. Very un-trials bike like!
Unfortunately the gearing is too high, so next on the shopping list is a 54 tooth sprocket!
Mark