SQ4 gets a new tank

A long while ago, I confessed that I had realised the tank that my SQ4 kit arrived with, and which I had painted at vast expense was not a Square Four tank at all, but one which had once belonged to a KH Hunter twin. It did look good though:

It looked even better on the bike:

I started to look for another tank and after a short interlude with a very rusty tank from Denmark I found one in original paint at Yeoman's Motorcycles. When they are on the bench together, you can see how different they are:

So now, with a new tap (actually a refurbished original) and a balance pipe, here is Amelia in her latest incarnation:

Model A - new bits from club spares

 I had a nice little present from AOMCC Black Ariel Spares this morning:

Here we see a pair of footrests, a brake pedal spring, the gearbox adjuster and a valve cap spanner.

Model A - Rear Brake Rod

 The rear brake rod is a much simpler affair than the front - it has a clevis at the rear end and this just needs a new pin, which is easy to make on the mini-lathe using a tailstock V-block:

The brake rod is just a bit of 1/4 round bar, threaded 1/4 CEI for the adjuster. The clevis is there, though very worn and we can find a spring from stock. The adjusting knob is missing, so we will turn that from a bit of 303 round bar, 1 OD:

It's reduced to 1/2" at the rear end, and the front appears to be domed but other than that is is similar to the front one. Same straight knurl:

Dome is made after parting off, with a combination of turning and a bit of filing:

We can mill a shallow groove in the rear to accommodate the clevis using an end mill.

Job done, though I think that clevis will need replacing.