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by paul.jameson
Wed Jun 26, 2019 8:36 pm
Forum: Logbooks for sale online
Topic: 917UXB 1951 trials on Ebay
Replies: 2
Views: 208

Re: 917UXB 1951 trials on Ebay

It seems that our vendor has not yet sold the bike as it is back on Ebay. Can anyone spot any part which might actually form part of a 1951 trials Ariel?
by paul.jameson
Wed Jun 26, 2019 7:48 pm
Forum: Four stroke
Topic: VH-crank - oil supply
Replies: 3
Views: 76

Re: VH-crank - oil supply

What make was the big end bearing in the VH crank? Some pattern ones were notorious for early failure.
by paul.jameson
Wed Jun 26, 2019 7:43 pm
Forum: Ariel Talk
Topic: Dans son jus VG
Replies: 11
Views: 300

Re: Dans son jus VG

this argument ran for some time in Cheval de Fer during the 1990s, if memory serves me right. Many of us thought that the cable chafing issue was the answer but the clincher is the shape of the earlier top links. These are rounded between the fork spindles and so don't hit the top fork casting. I am...
by paul.jameson
Tue Jun 25, 2019 9:36 pm
Forum: Main Chat Forum
Topic: Ariel twin
Replies: 28
Views: 490

Re: Ariel twin

Yes Lee, part way through the 1951 season, the chrome ran out - or actually, I believe, the nickel to go underneath the chrome. If you PM me the engine and frame numbers, I should be able to tell you whether the bike came out before the chrome ran out or after.
by paul.jameson
Tue Jun 25, 2019 9:04 pm
Forum: Four stroke
Topic: 1938 SQUARE FOUR THROTTLE CABLE PROBLEM
Replies: 6
Views: 133

Re: 1938 SQUARE FOUR THROTTLE CABLE PROBLEM

At the twist grip end there should be a ferrule. These are standard, but come in 2 sizes. The easy approach is to order one of each and see which fits. If you are really lucky, the spare one might fit the carb end. I don't know what was originally fitted here as I have made my own carb end brackets ...
by paul.jameson
Tue Jun 25, 2019 8:37 pm
Forum: Ariel Talk
Topic: Dans son jus VG
Replies: 11
Views: 300

Re: Dans son jus VG

No. Chamfers inside bottom to prevent the links hitting the top fork casting when bottoming.
by paul.jameson
Tue Jun 25, 2019 8:33 pm
Forum: Ariel Talk
Topic: case screws
Replies: 5
Views: 132

Re: case screws

I seem to remember posting this in reply to an earlier similar query but here goes once more: The 3 longest screws go furthest to the front, into the engine through the inner case (at 6, 9 and 12 o'clock). The 3 shortest screws go in 3 of the 4 holes round the clutch dome - the 4th hole not being th...
by paul.jameson
Sun Jun 23, 2019 9:00 pm
Forum: Four stroke
Topic: Square Four MkI - first rides after restoration
Replies: 17
Views: 387

Re: Square Four MkI - first rides after restoration

If your oil pressure is say 25psi when going along at 45mph in top gear then a lack of oil pressure at tick over would suggest to me worn rocker gear. Provided that if you blip the throttle at tickover and then see something on the oil pressure gauge, I wouldn't worry too much.
by paul.jameson
Sun Jun 23, 2019 8:47 pm
Forum: Main Chat Forum
Topic: Ariel twin
Replies: 28
Views: 490

Re: Ariel twin

Lee,

Have a chat with Sean O'Brien about spares. I think you will find that he has lots available for the iron engined KH.

Paul
by paul.jameson
Thu Jun 20, 2019 9:32 pm
Forum: Four stroke
Topic: Lathe user?
Replies: 19
Views: 752

Re: Lathe user?

On the larger thread sizes, such as those for wheel spindles, Ariel tended to use 20 tpi. I have various sizes of UNF taps and dies which I use to make close replicas of such Ariel originals.

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