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Can anyone tell me what type of rubber washers are used for the rear stand mounting bolts (1930 TT Rep)?
Graham Moag doesn’t have anything and I am not sure what to use.
The stand has quite a deep recess where the washers locate and seems to indicate that the washers need to be quite thick with the hole fairly large.
Also, does anyone have a decompressor lever (preferably nickel plated) for a 1″ diameter handlebar?
Chris.
There are no rubber washers on the rear stand…. It should be a spring washer with flat cross-section. I can’t remember the trade name for them, perhaps “Belleville Washers” ? Somebody will know and tell us ! I got some from the Spares Scheme a few years ago, but they are all now on bikes except for one that I am keeping as a pattern for future reference.
Brian
No, it’s not a Belleville washer, although they would do the job I’m sure. It is a double-coil spring washer, flat cross-section, and with both ends bent down so that they don’t chew up either the retaining washer or the groove in the end of the stand. There is a trade name for them, but I can’t find it ! It would really help to have it so that you know what to ask for in the engineer’s merchants…. There is a similar, but smaller washer, on the hand-change lever mounting.
I’m sure that someone reading this will let us know that elusive name. Come on chaps !!
Brian
Thackeray washers is a term that comes to mind, does this ring a bell with anybody. I seem to remember buying a couple from a stall at the Classic Bike Show at Stafford a few years ago.
John
Brian/John,
Thanks for the info. I will see what I can find.
Chris.
Yes! Thackeray Washers, that is definitely the name. I’ve been racking my brain all morning. Thanks John.
Brian
I see that we have been down this road on a previous occasion, in Feb 2006, and it seems to have fizzled out without anyone buying a couple of hundred of the things to keep us going for a few millenia……
Brian
I have been trawling through the internet and, although Thackeray washers are available, I cannot find anything near the size required.
It seems that they should be about 3/4″ id and 1 1/8″ od. Is this what your spare washer measures Brian?
Does anyone have a pair that they are willing to sell?
Chris.
Grover ,Brian ?
Hi Guys,
Very interested if someone can locate as I need a set for the ’29 Flying Squirrel !,
downunder.
Peter S
Woodstock Indistrial Supplies (01202 474222 – http://www.nutsaboutbolts.org/doublecoil) have a range of metric double coil (Thackeray) washers. It looks like the M20 washer, that’s 20.2mm id x 32.2mm od x 14mm high, is the nearest (although the od might be a bit big). I will try them and report back.
If anyone knows of something better (or has a pair of originals to sell) please let me know.
Chris.
That sounds like the size I had a few years back, as they were just too big on the O/D to fit into the recess in the end of the stand legs, so I slid them onto a mandrel, covered up all the working parts of the lathe, and then ground them down until they were down to the correct O/D. I think that finding new ones in the correct Imperial size will be next to impossible, but a long-established engineer’s merchant might have some tucked away somewhere.
It should be noted that the originals used by Shipley were in much thinner gauge material, and they can be compressed between your fingers. Nobody seems to make them like that any more. Perhaps a firm like Alberta Springs, (a friend of Tim Sharp) might be persuaded to make a batch for us….
Brian
Brian,
Yes, I think that you are absolutely correct. The internal diameter is fine, but the outer diameter is something like 2mm too large.
However, There are multiwave compression rings thas can be obtained from : –
http://www.assocspring.co.uk/p/41/multiwave_cor
They produce a spring that will fit without messing about. It has a 28.6 o/d, 21.6 i/d and either a 7.6 to 3.7 compression or 12.6 to 6.3 compression ; the latter (or the former, if there is to be little force on the leg) may be best.
They cost (wait for it!) £12.16 each plus p/p ; expensive, but should save much messing about.
Chris.
COME ON put em on a bolt and grind em down they don’t fit in the crankcase.