Question Re: Plunger Spindle, Rear Springs

Hi Michael........checkout the attachments. They should the spindle end of a fully restored Norton Plunger Frame. Some had a solid cap end and other a slotted end similar to yours. Which possibly may take a plug or cap of some kind. The third photo shows the rear of another restored ES2

Attachments
Plunger%20Frame%20Parts%20-1.jpg
Rear%20Wheel%20and%20Suspension.JPG
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Hi Mike,

I don't know if you are aware but the suspension castings were modified in mid 1947 and there might be a slight difference in the lengths between the earlier one and the later casting. Also you could check how the taper fits the bottom hole, it might not be quite the same angle so not pulling home fully.

Regards, Richard.

Hi Mike - the part number for the spindle rod is the same for ES2 , 30, 30M , 40 and 40 M for 1950 and beyond by my spares list reprint so I believe there was no difference in length between models at least for 1950 and beyond. I have measured my 1950 ES2 plunger castings and the overall length top to bottom is 13" . If yours is different then there must have been a difference in rod length as well from one year to another. As Richard C. has mentioned you need to be certain that the tapered lower end has been drawn fully home - a difference in taper rate will effect this of course but the bolt length at the bottom may also prevent it being drawn home if the bolt is too long and bottoms out in the rod before drawing the rod home. The upper end is finished off with a cap and it does appear that the rod should not protrude beyond the upper casting as yours seems to do.

I hope this is of some help - Richard

Mine (1952 ES2) are more or less flush with the lower bolt snugged up. As long as the bottom is fully home in the taper (which is very important as otherwise you'll get lateral movement) it wouldn't affect the function if it protrudes at the top - but as said, I would check that taper carefully. Probably best to do that with the springs and slider removed so you can see what's going on down there.

The bearer bars should have a plug in the top (B4/673) which I've never seen and mine came without. I'm going to turn a couple up out of Delrin. I'm not actually sure what function they serve other than keeping (some) water out......

Attachment shows your variation of Plunger parts.

Attachments
singles-rear-end-jpg

Hi Michael.

Thanks for the tip about RGM - I'd assumed these parts were unavailable. I had a new bearer bar made by an ex-toolmaker and it is an excellent job (and much cheaper than the RGM item) but I think I'll go for their end caps which are very reasonably priced.