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by volker.halbach
Fri Aug 24, 2018 5:04 pm
Forum: Four stroke
Topic: Engine revs rising when air lever opened
Replies: 10
Views: 370

Re: Engine revs rising when air lever opened

I had a similar problem on a Triumph with a 930 Amal Concentric. Of course, John is right: If the slide is at the bottom, the engine must stall. But assuming that the slide is not at the bottom because there isn't enought slack in the cable, check whether the spark plugs are sooty. In my case the ma...
by volker.halbach
Wed Aug 22, 2018 1:56 pm
Forum: Four stroke
Topic: 1937 NH valve lifter
Replies: 2
Views: 173

Re: 1937 NH valve lifter

Thanks, that makes sense. Probably the easiest solution is to fit longer pushrods, which should get the valve geometry right again.
by volker.halbach
Tue Aug 21, 2018 5:31 pm
Forum: Four stroke
Topic: 1937 NH valve lifter
Replies: 2
Views: 173

1937 NH valve lifter

This is about the valve lifter on my 1937 NH. This is still the old cyclinder head with the valve lifter centrally located rather than in the more convenient location on the side as on the later cyclinder heads. I noticed that the arm of the valve lifter arm moves when the engine is turned over. So ...
by volker.halbach
Wed Aug 08, 2018 10:28 am
Forum: Suppliers
Topic: Smiths PA repairs
Replies: 1
Views: 189

Smiths PA repairs

I have a Smths PA speedo that needs fixing. I found several web pages with people who can deal with PAs. Does anyone have experience with those?

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