1930 LF

[Julian Murphy]

Nicely set up.

Watching with interest.

[JohnLay]

Reducing the boss and thinning the teeth (they were a little too wide as supplied) was simple enough, however cutting the taper to suit the dynamo shaft took a little more trouble. Cutting an internal taper in it’s self is easy enough by settling over the lathe’s top slide, but getting it wrong is just as easy. Too shallow an angle might be corrected, but too much and you end up throwing the work away and starting again. The taper is I am informed 1:10 or about 6°. Relying on reading the marks on the top-slide is not that good enough, so I made several test pieces on bit of scrap metal beforehand.

Top slide set over for boring the taper.

[nevhunter]

The tool has to be exactly at centre height as well as the correct angle. Nev

[JohnLay]

The tool has to be exactly at centre height as well as the correct angle. Nev

Quite so Nev.

[JohnLay]

In order get the taper correct I looked on line for 1:10 taper reamer, found one, ordered it. It proved to be not very expensive, only there proved to be a reason for that, despite being marked 1:10, it wasn't. More searching found another, rather more expensive but that least it was the correct taper.

Needed to be heald in a chuck as a morse taper type was not available.

The home made 14 tooth sprocket in place.

[JohnLay]

Would not run, no spark, found that the points had closed up. Adjust the points find that the timing had slipped a little. Re-time the ignition, find muck in the fuel, clean out the lines. Took it to Cassington and someone else got it going, seems I wasn't kicking it hard enough (I am waiting on a right knee replacement). Still things to do, but getting there.
Tried adding a video but it took way too long to download so here is is a link instead :-
https://youtu.be/b9fbIzAkYyI

[dave.owen]

Good news it's running, I heard it at Cassington today

[JohnLay]

After last Saturdays experiences I decided to give the fuel system a little more attention. Namely, drain out all the fuel - it was a bit on the "brown" side . Removed the carburettor float chamber, took out the float itself and lapped the float needle onto it's seat with some fine grinding paste. There was quite a bit of muck underneath the float, so took the opportunity to clean all of that out. Next thing is to refill with fresh fuel and try again.