Description of Part Required:- Lightweight Twin Tappet part number: 20871
Model Number required for:- Jubilee, Navigator and Electra
Part Number:- 20871
Also used on if known:- All Norton Lightweights. Four per engine.
Implication of lack of part:- Vehicle Off Road. Old ones wear on face and shaft.
High wear part which needs frequent replacement
Routes you have tried to acquire the part and response received:-
1. NOC Spares are out of stock. None on order.
2. Not available from NORVIL, RGM or any other known Norton parts provider
Do you have a worn or damaged part available as a pattern?:- Yes
Based on price for similar parts, what would you expect to pay (give range) £40 - £60 + VAT each
Comments: This is a key Lightweight engine critical spare which can’t be sourced elsewhere. With the growing popularity of the Lightweight twins and the plentiful supply of spares for most of the other Norton models could the NOC provide support to loyal club members by prioritising this vital spare part?
Is anyone else in the same position? Or know where there are four new tappets to help the member that raised this parts Commisioning request.
If more members are looking for this part please indicate on this thread. it would help the justification to launch a batch and guide the batch size.
Yes I’d buy a couple of sets, so long as the price wasn’t too unreasonable!
I will also need a set for a 1963 Electra.
I would buy a set, there is another thread for this part running on this forum so obviously a growing need!
I've redrawn the item and got a competitive quotation for the supply of a batch of 200 Tappets 20871.
They will be assembled from two parts like the original. The flat face following the cam will be hard chromed, like the original.
They will be compatible with the existing pushrods, follower bushes and camshafts.
Approval for manufacture has been given by the NOC directors and an order should be winging it's way to the supplier. The competent supplier has been in business for many years, and was a past supplier to the Norton Rotaries. I don't intend to enter a debate on the choice of supplier.
Good news I hope. I can't tell you the final price, but I can tell you that the current NOC shop price reflects costs of the last batch made 15 years ago.
NOC Parts commissioning officer
I'd like to add my name to the Interested list!
Will keep an eye on this thread for updates re price and date.
Thanks all, Mike.
Great news thank you Peter