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by pete.collings
Sun Apr 07, 2019 12:41 pm
Forum: Electrics
Topic: Scew thread size & type?
Replies: 8
Views: 320

Re: Scew thread size & type?

Keith
I had PM'd you, but message has not been picked up yet.
by pete.collings
Tue Apr 02, 2019 4:50 pm
Forum: Electrics
Topic: Scew thread size & type?
Replies: 8
Views: 320

Re: Scew thread size & type?

I have now looked at two dynamo ends, believed to be NOS, and both have a 2BA thread to retain the end cap. They are the latest type of end, for use with the one piece metal end cover, so whether the thread was changed to suit the more robust endcap design,I do not know, although looking at a used e...
by pete.collings
Mon Apr 01, 2019 11:09 pm
Forum: Electrics
Topic: Scew thread size & type?
Replies: 8
Views: 320

Re: Scew thread size & type?

Perhaps it is a reflection on the state of many threads I have encountered in this area that a 2BA screw will invariably fit, even if it was originally a smaller, finer thread. I will take a closer look at the best condition end I have, to see if I can ascertain exactly what the thread size is, but ...
by pete.collings
Mon Apr 01, 2019 11:06 am
Forum: Electrics
Topic: Scew thread size & type?
Replies: 8
Views: 320

Re: Scew thread size & type?

It's 2BA, commonly available. I can supply a length of 2BA studding (cut from a longer bolt) plus a couple of nuts, for the cost of a stamp.
by pete.collings
Fri Mar 29, 2019 12:26 pm
Forum: Four stroke
Topic: Single Cams
Replies: 0
Views: 136

Single Cams

With the alloy engined VH I purchased a couple of year ago. I had also brought the remaining spares. I had kept the cams, but one of them appears to be a "special" regrind, which I think is the same as is fitted in the VH. It is described as "Brian's cam", and Brian used his sing...
by pete.collings
Fri Mar 29, 2019 12:10 pm
Forum: Electrics
Topic: MO1 Magneto Question
Replies: 9
Views: 249

Re: MO1 Magneto Question

Some photos to show the difference between the thicker and thinner MO1 camplates

MO1CamringP04.JPG
MO1CamringP03.JPG
MO1CamringP02.JPG
MO1CamringP01.JPG
by pete.collings
Fri Mar 29, 2019 12:06 pm
Forum: Four stroke
Topic: Push Rod Tube Oil Seals
Replies: 9
Views: 373

Re: Push Rod Tube Oil Seals

Details of Mod
PPushrod Seal Mod.png
by pete.collings
Tue Mar 26, 2019 3:57 pm
Forum: For sale/wanted - Parts
Topic: Ariel Spares for Sale - Last Update April 2019
Replies: 18
Views: 7862

Re: Ariel Spares for Sale - Last Update March 2019

I don't have one, but have in the past got valve lifter parts from John Budgen, link as below:

https://i.ebayimg.com/images/g/J-YAAOSw5tNcSc~n/s-l200.jpg
by pete.collings
Tue Mar 26, 2019 12:05 pm
Forum: Electrics
Topic: MO1 Magneto Question
Replies: 9
Views: 249

Re: MO1 Magneto Question

Hi Bob I have built and sold a lot of MO1 mags, and know that a few ends had a deeper seating for a thicker camplate. However, the later thinner camplates can be used with a star shaped packing washer underneath, it needs to be star shaped to allow for movement of the camplate plunger. I have never ...
by pete.collings
Sun Mar 17, 2019 11:33 am
Forum: Four stroke
Topic: NG Iron Head valve job
Replies: 8
Views: 418

Re: NG Iron Head valve job

A word of caution about using liquid nitrogen to chill iron valve guides before fitting, you need to allow them to warm a bit before fitting, as iron at -197 degrees centigrade becomes fragile, and liable to shatter. I believe liquid nitrogen is used by vehicle breakers to separate the iron part of ...

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