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by paul.jameson
Fri Sep 11, 2015 9:46 pm
Forum: Four stroke
Topic: 1939 VH Upswept pipes/silencers
Replies: 21
Views: 3580

Re: 1939 VH Upswept pipes/silencers

I bought a pair of upswept pipes from Armours in 1990 or 1991. The left pipe fitted well, the right not so well but useable (just). I fell off the bike and damaged the left silencer so had a new one made. It had higher exhaust resistance than the original with the result that the left pipe rotted ou...
by paul.jameson
Wed Sep 09, 2015 7:59 pm
Forum: Four stroke
Topic: 1939 VH Upswept pipes/silencers
Replies: 21
Views: 3580

Re: 1939 VH Upswept pipes/silencers

Draganfly buy their pipes from Armours.
by paul.jameson
Wed Sep 09, 2015 7:56 pm
Forum: Four stroke
Topic: Q box speedo ratio
Replies: 3
Views: 452

Re: Q box speedo ratio

2240 is standard for a PA speedo and I suspect is the same for the earlier Q box set up. 3360 is standard for car PA speedos and the reason is simple - in the 1930s, bikes went about half as fast again as cars. So 40mph was a good speed in a car and 60mph a good speed on a bike.
by paul.jameson
Wed Sep 09, 2015 7:47 pm
Forum: Four stroke
Topic: Oil Pressure
Replies: 61
Views: 9641

Re: Oil Pressure

Take the regulator apart and clean it very carefully. It acts as a second ball valve on the feed side so it sounds to me as if you may have a piece of dirt under the ball. After the regulator was abandoned (during the war, from memory) a second ball valve went into the of the quill which feeds the o...
by paul.jameson
Wed Sep 09, 2015 7:39 pm
Forum: Four stroke
Topic: Timing cover oil pump feed holes
Replies: 2
Views: 738

Re: Timing cover oil pump feed holes

These inserts only appear in some timing covers from the 1930s and possibly 1940s. They may have been cast in to take the oil feed to the regulator and avoid leakage elsewhere through porous castings. I don't think they are used in timing covers without the regulator. Putting this in perspective, ou...
by paul.jameson
Tue Sep 01, 2015 9:08 pm
Forum: For sale/wanted - Parts
Topic: Mid '50s Colt gearbox
Replies: 2
Views: 615

Re: Mid '50s Colt gearbox

I supplied 2 NOS kickstart shafts to Geoff Brown from Ralph Hawkins's stock of parts earlier this year. He may have one left..........
by paul.jameson
Tue Sep 01, 2015 9:05 pm
Forum: Four stroke
Topic: Huntmaster Sidestand
Replies: 12
Views: 1874

Re: Huntmaster Sidestand

I have seen one like this before but I assumed it wasn't an Ariel original. I suspect it is another make but easily modified to take the extra rod and pad to allow you to pull the stand down with your boot. Perhaps it inspired the final Ariel pattern.
by paul.jameson
Tue Sep 01, 2015 8:58 pm
Forum: Four stroke
Topic: VF. 2 compression ring to the 3 ring set up?
Replies: 2
Views: 467

Re: VF. 2 compression ring to the 3 ring set up?

If you use an oil control ring on an open valve head Ariel you will deny the exhaust guide the lubrication it needs and it will wear out very quickly indeed.
by paul.jameson
Mon Aug 31, 2015 9:54 pm
Forum: Four stroke
Topic: Huntmaster Sidestand
Replies: 12
Views: 1874

Re: Huntmaster Sidestand

Can we have a picture of yours please Simon? The side stand was a subject of year on year development by Ariel so you may simply have an earlier year example. The one in the photo is the last development - which works - but there are earlier examples, like on my KH which are so difficult to use that...
by paul.jameson
Mon Aug 31, 2015 9:50 pm
Forum: Four stroke
Topic: Wire locking of petrol tank bolts.
Replies: 5
Views: 1182

Re: Wire locking of petrol tank bolts.

I simply run the wire through the bolt head then round the mounting bracket for each bolt and twist. The wire is scrap each time I take a bolt out. These days I use stainless steel reinforcement tying wire ( but I am a Chartered Civil Engineer so you would expect me to be into reinforced concrete). ...

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