Can't help too much, since not even sighted a Fairy in the metal.
Esp such an early one. What year is this ?

But those brochure ? pics don't seem to show much in the way of oil or petrol line(s),
or they are very indistinct
This is not a case of pics being 'tidied up' from the photoshoot is it. ?
Might make getting things accurate a little more difficult....

So are these all fillercaps, or taps-needle valves as well
Have fun, nice project.

P.S. Fairies have been well discussed here previously, it would seem.
This a cover photo even.
https://www.douglasmotorcycles.net/index.php?topic=2163

A 1st place award of Tudor Thompson for multiple classes at the Canford Park club speed trials. Accompanying photo is also of Tudor, but not sure it's from the same event as the award.

Quote from: cbranni on 12 Jan 2025 at 21:03 Just removed my tappet cover and took a photo, hope this works I am not good with computer stuff

Quote from: cbranni on 12 Jan 2025 at 21:06 Lower part of photo shows exhaust valve closed and upper part shows feeler in the gap of the inlet tappet

Kind regards Colin

PS hope you sleep tonight

I have a look in the morning but I was looked in this place and never see the gap like in your photo 
Thanks anyway will let you know tomorrow 

Lower part of photo shows exhaust valve open and upper part shows feeler in the gap of the inlet tappet

Kind regards Colin

PS hope you sleep tonight

Just removed my tappet cover and took a photo, hope this works I am not good with computer stuff

Quote from: cbranni on 12 Jan 2025 at 20:22 I don't want to "teach my Granny" here but turn the engine till the inlet valve opens then the exhaust valve tappet is in the right position for checking and vice versa. If you still have issues I can take some photos of mine tomorrow.

Colin

I tried to find any gap when piston is on tdc and both valves closed can you mark on my photo wher shuld be gap for feeler?  I'm send u a message on messenger to

I don't want to "teach my Granny" here but turn the engine till the inlet valve opens then the exhaust valve tappet is in the right position for checking and vice versa. If you still have issues I can take some photos of mine tomorrow.

Colin

Quote from: cbranni on 12 Jan 2025 at 19:20 Hi there, you are in the right place to adjust the tappets and quoting from the manual

The tappet clearance with this engine should be .006 for both inlet and exhaust and at no time should the clearance be below this amount.

First insert a feeler of the correct thickness between the tappet and valve adjusting nut, then adjust the nut until it just holds this feeler in position, after which the valve spring collar should be locked against this nut and the feeler withdrawn. The adjusting nut and collar must at all times be securely locked together, otherwise the tappet adjustment will quickly vary and cause damage to the valve stems.

Hope this helps

Colin

Hi Colin  I'm don't see any gap to insert the feeler gauge.
I checked cuple of  times today prapobly can't sleep tonight 
The nut is locked together with spring collar.

Hi there, you are in the right place to adjust the tappets and quoting from the manual

The tappet clearance with this engine should be .006 for both inlet and exhaust and at no time should the clearance be below this amount.

First insert a feeler of the correct thickness between the tappet and valve adjusting nut, then adjust the nut until it just holds this feeler in position, after which the valve spring collar should be locked against this nut and the feeler withdrawn. The adjusting nut and collar must at all times be securely locked together, otherwise the tappet adjustment will quickly vary and cause damage to the valve stems.

Hope this helps

Colin

Hi all,

I need to produce a petrol tank for my Fairy motorcycle, so i am hoping someone can help with some advice, on some details on it.
So looking at the fuel tank on the images attached there would be an oil tank at the front, fuel tank at the back. Can i assume that the oil tank would end behind the first filler port.
Why is there, what looks like 3 filler ports, and if correct what would the third one be for?
What would the filler ports have looked like?
Any help would be greatly appreciated before i start making the tank.

Regards
Tony