Ìt shows the front is a mudguard bolt but not what connects under the neck, is that possibly for a headlight?

Does this help ?

Hi Frank.
I searched my spares and found these if you need them.
Ta Daren

Veteran 2 3/4 forks query
On my forks underside there are holes on the neck bottom and on the legs bottom that seem to line up
However a tensioning bolt would render the springs useless... photos attached
What attaches on these holes please, anyone know?
Thank you 🙂

The RA did use slotted valve stems. Or at least initially. The RA handbook is not clear if they used a straight cotter or that 'E' shape type. Both have their advantages and disadvantages. They did go through about six designs of valve collar to go with the cotter and the entire industry was moving away from slotted to grooved valve stems. Grooved stems are basically a time bomb waiting to cut loose. I imagine towards the end of the RA era (c1925) they had adopted the tapered collet design seen on the Dirt Track models onward.

I have made new slotted valve stems for a client that wanted the original setup on his 1932 flat head BSA side valve sloper. It is possible to cut a slot in modern valve stem material with a small carbide end mill. In that particular case the original BSA slots had a full radius at the ends, rather than being square. The other saving grace was it did not rev that high and if the end of the stem did break off it was not going to drop a valve into the cylinder.

On my RA I was going to investigate (have not got around to it yet) if I could use DT valves and tapered collets. I have new ones of those valves, and the longer stems used on the 1932-35 ohv models.

-Doug

I am working on the two RA cylinder heads now, and find that the valve stems are slotted and fitted with parallel split cotters each with a 'tab' that locates in that slot (see photographs).

Unfortunately only one of the four valves has the split cotters in place, with the other three having various pieces of steel through the slot to retain the valve.

Any advice on whether the 'tabbed' cotter arrangement is the original fixing, were they fitted to other engines of the period, and are they another part that's as rare as 'hen's teeth'?

Hi I am new to this forum i am restoring a 1939 Douglas FT35 stationary engine and i am looking for a dipstick some carburettor parts fuel bowl Throttle valve cross shaft (Amal type 124)  
air cleaner 
Or any contact details of any one who might help me 
Or any information
Thanks 
lap35

Pawel
I also need 1, and I have one to copy...  I can make some out of nickel plate bronze if you would be interested.
Paul
Los Angeles Calif. USA

Attachments added.

-Doug, admin

Thanks Ron, just managed to get time to look at this. Excellent stuff. I'll print this off. Much appreciated