[scott596]

I thought that I had seen most modifications ever fitted to Scotts, but those transfer port covers and their fixing screws are most unusual, surely the upper bolts are just tapped into the waterjacket, and the lower ones with penny washers into the crankcase just a bodge, is this some sort of one piece casting that includes the inlet manifold for the TT carb? or has the back of the crankcase with the tapping for the transfer port covers been broken away? anyway best of luck with the rebuild. Alan Noakes. scottworkshop@hotmail.co.uk

[scott596]

Hi Brian I intend to use alloy steel hardened and tempered. Alan noakes. scottworkshop@hotmail.co.uk

[scott596]

Unfortunately this cluster does not have a kick start square. Alan Noakes.
scottworkshop@hotmail.co.uk

[scott596]

No, nice TT carburettor. Alan Noakes. scottworkshop@hotmail.co.uk

[scott596]

I would also like to thank everyone involved in organising Saturdays run sorry if I smoked anyone out. Alan Noakes
scottworkshop@hotmail.co.uk

[scott596]

Eric I have retoothed two speeder sprockets in the past and can fit larger sizes if necessary.Alan Noakes.scottworkshop@hotmail.co.uk

[scott596]

Hi Jonathan I have the remains of the correct lever you are looking for the trouble is it looks as if it has spent most of its life at the bottom of the ocean although the splines look good, in order to reuse it a new arm would have to be welded to the end with the splines, please email me and I will send you a photo, if you are going to use it you can have it as a gift but if not I would sooner keep it as a pattern, have a look at it before you decide. Alan Noakes.
scottworkshop@hotmail.co.uk

[scott596]

Hi Arthur, on Scotts nobody really knows when things changed or altered exactly it was probably when a particular stock of items ran out or a new supplier came on the scene, but generally speaking the sharp edge transfer port covers were about in the vintage period and the rounded type went through to the last Birmingham models, this is not to say that the rounded type were not also available in the vintage period confusing isn`t it ? Your other query about radiused ports and square ports, as the flow is going the way it does I wouldn`t worry if it was the other way it might have a small effect on flow. Alan Noakes. scottworkshop@hotmail.co.uk

[scott596]

David first of all piston rings are an accurately made item, you say that they have not been ground for the ring stops which makes it easier to check them. Lets suppose that you have a Scott barrel of known size IE,long stroke plus .040″=74mm if you put the correct size rings into the bore you would probably have .012″ end gap if you put plus .020 rings into the bore IE 73.5mm you would have about .070″ end gap and if you put plus .060″ rings into the bore IE 74.5mm the ends would overlap each other by about .060″. So although they might look similar the circumference is quite different. Alan Noakes. scottworkshop@hotmail.co.uk David I have sent you a PM.

[scott596]

Eric, over the years I have done many brakes for motorcycles, I would normally start by mounting the built up wheel on my machine and grind the drum true by spinning the wheel on it own bearings, then I set the backplate up complete with linings and machine the linings to the exact same radius as the drum, take no notice of people who talk about linings bedding in this can take many thousands of miles and a lining with a different radius will only touch on 1 or 2 small areas. While I agree with Brian about the importance of centrallising the brakeplate I have found that the majority of brakes use a hole the same size as the spindle which prevents it from centrallising so please check that you have adequate clearance. Alan Noakes. scottworkshop@hotmail.co.uk

[scott596]

James as per my previous reply this is the same type of harness that was fitted to my Birmingham Scott. Alan Noakes.

[scott596]

James, some confusion here while some early Birmingham Scotts were fitted with DPY engines which probably used longer studs and an alloy spacer these spacers were approx 5/8″ thick and the studs covered this length, after this most Birmingham Scotts were fitted with the DMS engine one of the differences with this crankcase is that the inlet flange is much deeper than previous engines the extra length covers the distance that the spacer used to occupy, you stated that it was crudely made and the studs were not long enough to accomodate it surely means that it was not original, my own Birmingham model which I bought new in 1964 is only a few numbers away from yours has never had a spacer fitted. Alan Noakes.

[scott596]

No James leave it out it`s not standard. Alan Noakes.

[scott596]

Hi David I can confirm that the chrome type splitter box was available about 1933 as a while ago I bought a pair of Bowden carburettors from an Excelsior mechanical marvel these had two pairs of cables and two splitter boxes, one pair to the twistgrip and one pair to the choke lever. What you have be carefull of is to make sure that the splitter box has enough free length inside to allow your carburettor to open fully, the other problem to consider is that the cable movement required to open the carb fully may not be the same as is required by the pump, so an adjustable arm might be needed on the pump or a tension spring between the cable and the pump if the pump needs to be fully open at 3/4 throttle, best of luck, Alan Noakes.

[scott596]

James I doubt if any late Birmingham models ever used cloth covered wire, my own model which is only 8 numbers away from yours certainly didn`t, the whole harnes used black PVC covered wire with coloured rings at each end to identify them apart from the three alternator wires which were coloured and covered in a grey sheath. A few months ago a company called NSA classic motorcycles of Beccles Norfolk UK were advertising wiring harnesses for Birmingham Scotts on E-BAY UK but I have not seen this ad for a while and I cannot tell you if it was for a Miller system or Lucas. Any company specialising in wiring harness production would obviously require a pattern to copy,if you have this why not make it yourself all the components are available from the internet. Alan Noakes.

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