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by nevhunter
Wed Aug 22, 2018 12:55 am
Forum: W/NG General
Topic: Out and about today
Replies: 1
Views: 28

Re: Out and about today

Hardly enough to get it warm. Good aren't they? My most used bike is the old W/NG . Starts first compression 95% of the time. It's quite amazing..Nev
by nevhunter
Wed Aug 22, 2018 12:49 am
Forum: Electrics
Topic: More dynamo issues.
Replies: 5
Views: 92

Re: More dynamo issues.

It doesn't matter which one you flash. (D or F) You are only putting in a small amount of residual magnetism to start the process off if the machine has sat or the generator has just been dismantled. If you motor it you don't need to flash it but it's always better to just do it to be sure, if there...
by nevhunter
Wed Aug 22, 2018 12:38 am
Forum: Four stroke
Topic: 1937 NH valve lifter
Replies: 1
Views: 48

Re: 1937 NH valve lifter

I think it's the same part, and if the followers are worn and refaced you will get the problem you have. Nev
by nevhunter
Wed Aug 22, 2018 12:34 am
Forum: Ariel Talk
Topic: Low detergent or NONE detergent oil Single engine
Replies: 18
Views: 480

Re: Low detergent or NONE detergent oil Single engine

I wouldn't be able to put a figure on that but some advertise "extra" . I would avoid those for sure. One particular brand here still advertises such oil . The experience is not second hand and I made enquiries in the Industry and found out it was quite common for the problem to occur but ...
by nevhunter
Tue Aug 21, 2018 8:11 am
Forum: Electrics
Topic: More dynamo issues.
Replies: 5
Views: 92

Re: More dynamo issues.

Unhook both wires and Flash D and put a connection between F and D and it should run at full output. From your circuitry you can see that will put full volts across the field. You should get well in excess of 7 volts without load at anything about a fast idle. Nev
by nevhunter
Tue Aug 21, 2018 7:35 am
Forum: Four stroke
Topic: Metal in oil filter
Replies: 4
Views: 183

Re: Metal in oil filter

Remove and flush the oil tank. It settles on the bottom. Nev
by nevhunter
Tue Aug 21, 2018 7:33 am
Forum: Ariel Talk
Topic: Low detergent or NONE detergent oil Single engine
Replies: 18
Views: 480

Re: Low detergent or NONE detergent oil Single engine

Too high zinc and phosphorus additives will jamb your exhaust valves in the guides in hot running heads .Ie cast iron. More is not better but you need some. Nev
by nevhunter
Sun Aug 19, 2018 9:49 am
Forum: Four stroke
Topic: Metal in oil filter
Replies: 4
Views: 183

Re: Metal in oil filter

Check what they are with a magnet, If they are hard steel flakes your big end is probably failing. Pull the plate off the bottom of the crankcase and check the screen there. They can cause the scavenge pump to fail as the ball valve won't seat with chips there. Had it happen. The engine ends up smok...
by nevhunter
Sun Aug 19, 2018 3:21 am
Forum: Main Chat Forum
Topic: Whitworth vs BSC Thread question
Replies: 6
Views: 126

Re: Whitworth vs BSC Thread question

BRASS is 26 tpi also but a different angle (5 degrees different). If you are serious get it right and look after the original threads in your frame as oversize or changed threads are not easy to rectify. Don't just run a tap through them as it may be a bit oversize and plug the threads with wood bef...
by nevhunter
Sat Aug 18, 2018 11:30 pm
Forum: Four stroke
Topic: kh engine rattle
Replies: 18
Views: 353

Re: kh engine rattle

The fuel cap can rattle too but I expect you all knew that. Nev

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