Bolt hole distance mudguard stay 19291A?

Over the years I have looked at a number of full chrome atlas/SS guards , this style of guard was fitted to bikes with capacities from 350cc to 750 cc with wide or narrow yokes and from Norton and AMC factories ,Stays and bridges are being ofered for sale and its a lottery to get things to fit .Some other AMC machines had guards which appear very similar too but may be drilled in different places. Might be easier to get the stays made (there are small concerns making stays) and drill to suit. I have some orriginal 1960 stays which fit the Valenced DL guard,I can measure these for you ,but these are narrow yokes and the guard may be different??. Basic material seems the same as used for grab handles. Some stays on offer appear to be smaller in diameter.

Hello John, I have just measured one of my Atlas stays and it sounds like you've got the correct ones. Hole centres = 11.25 inches ; Flat portion at fork leg end = 0.75 inches, hole dia = 11/32 inches; Flat part at mudguard end = 1.0 inch, hole dia =9/32 inches. Don't forget to fit the half-moon spacers at the mudguard end - it stops the guard edging from crushing. Good luck, Howard

I will cross my fingers for you!, front and rear stays are the same. It would be nice if someone with a PUKKA guard of Known provenance drew it up with special attention to hole centers ,width accross valences and depth of fork leg recesses as these probably all change with the switch to wider forks about 1963. Who knows!!.

I have a genuine Norton valanced (deep type) guard in bare metal for the narrow pre-1964 fork stanchions lying in my shed. (I think I should havethe shallow blade type for the 1963 88SS- but they seem to be very rare.)

My bike has (for historical reasons) the same type of deep guard but made for the wide stanchions. It has been 'modified' (botched) with deeper side indents to fit between my narrowstanchions.

The only difference seems to be in the depth of the side indented pressing to take the stanchions. Everything else seems to be identical.

Like a great many heavy twins pre-1964 that I have seen, it is well nigh impossible to fit the guard in such a way that it does not rub the paint off one side or other of the lower fork shrouds. Some bikes I have seen have recesses cut inside the lower edges to avoid this. I wonder if that was original at one time?

I'll take a tape measure and camera to the cold shed this evening.

Ihave not fitted front stays. They don't seem to be necessary with the deep type guard.

Regards

David

The front and rear holes are all 6 inches back from the tip of the guard (measured looking straight on sideways)

Each hole centre is 11/16" from the edge of the guard.

Stays both front and back are as others have said: 11 + 1/4"

Hope this helps.

more

more

more

With the increased scarcity of orriginal spares its inevitable that we will be trying to match up unsuitable parts. thats why an accurate set of measurements of guards before and after yoke changes would be so usefull. Ditto fork bridges ,stays etc. I do miss John Hudson!!.

I am sorry! Also baffled. The guard looks like the one on my bike - but you are right - the holes are in different places! The rear one on the guard on my bike is the same as others in my photos, books etc and is closer to the bottom back edge. Whereas the front ones look to be similar.

So now I don't knowwhatI have (and don't remember where it came from either). It is not from a Light Twin either. It has the distinctive V-pressing in the nose so I assume it was Norton.