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by nevhunter
Fri Feb 15, 2019 10:09 pm
Forum: Four stroke
Topic: ENGINE OIL FOR 1938 ARIEL SQUARE FOUR
Replies: 4
Views: 79

Re: ENGINE OIL FOR 1938 ARIEL SQUARE FOUR

The fact You have two coupling gears might be taken into consideration. That and the camshaft and how hot the engine runs... A good oil should keep the engine internals clean. Even diesels stay clean these days if serviced properly. Experts probably along shortly. Nev
by nevhunter
Thu Feb 14, 2019 6:50 am
Forum: Four stroke
Topic: Secondary chain size on 1937 VB
Replies: 5
Views: 181

Re: Secondary chain size on 1937 VB

Some rear chains do get a bit close to the primary chaincase. on an Ariel. A 1/4 " chain is quite strong even though the sprocket(s) wear might be a little bit more It should still be quite satisfactory, The wider chain has longer pins that don't take the strain as well as shorter ones. Less ch...
by nevhunter
Thu Feb 14, 2019 1:03 am
Forum: Ariel Talk
Topic: Quick Mag Question:
Replies: 8
Views: 243

Re: Quick Mag Question:

The "normal side" is away from the engine on the magdyno but there's no real problem in either position except for the flooding carburetor going on both. There's a cork gasket under the pickup to stop water/fuel getting into the magneto. I've never had the pickup affected by heat on an Ari...
by nevhunter
Tue Feb 12, 2019 9:52 pm
Forum: Member's Bikes
Topic: SpAriel MkII aka The Hermanator
Replies: 80
Views: 7349

Re: SpAriel MkII aka The Hermanator

Vincent Yes it's good. Like to see the other side where it's attached. The CZ stuff is a real credit to them. Nev
by nevhunter
Tue Feb 12, 2019 9:41 pm
Forum: For sale/wanted - Parts
Topic: Unknown side valve barrel, head + other
Replies: 8
Views: 276

Re: Unknown side valve barrel, head + other

The case has the extended housing for 2 bearings that didn't come in till later. 33? Some cylinders don't have enough metal to bore to sleeve size safely. You could use a special thin sleeve or come back a little under standard size in the finished bore. The tramlines are from the gudgeon pin and on...
by nevhunter
Mon Feb 11, 2019 10:55 pm
Forum: Member's Bikes
Topic: SpAriel MkII aka The Hermanator
Replies: 80
Views: 7349

Re: SpAriel MkII aka The Hermanator

I'm doing a '40 OHV project myself that started life as a VA. Rather than use the usual/optional high pipe I'm having it go upwards AFTER the gearbox and having an original fishtail muffler, which I just happen to have useable. They are the best made muffler I've seen on a brit bike and no repro com...
by nevhunter
Mon Feb 11, 2019 10:15 pm
Forum: For sale/wanted - Parts
Topic: 22 or 23t crank sprocket wanted please
Replies: 5
Views: 160

Re: 22 or 23t crank sprocket wanted please

They appear to have been scarce for a while everywhere except for the square four with the lager bore sprocket for the bigger spline. I can't see why you couldn't adapt the whole cush drive from the four if the extra weight didn't bother you. Might be advantageous if you are pulling a chair with a g...
by nevhunter
Mon Feb 11, 2019 10:11 pm
Forum: Four stroke
Topic: Square Four main bearings-line boring.....
Replies: 18
Views: 1914

Re: Square Four main bearings-line boring.....

Or something resembling a shallow spline, if you are unlucky. White metal (babbit) runs with much less clearance than Bronze (or copper lead) needs.. The normal boring of these white metal bearings is done with a sharp fine pointed tool with a very small rate of feed.( Like the finest thread you cou...
by nevhunter
Mon Feb 11, 2019 9:57 pm
Forum: Main Chat Forum
Topic: New to the forum - 1927 SS restoration
Replies: 26
Views: 923

Re: New to the forum - 1927 SS restoration

What a magnificent array of quality replica parts and a really neat site. (No I don't have shares in it). Nev
by nevhunter
Mon Feb 11, 2019 10:51 am
Forum: For sale/wanted - Parts
Topic: Unknown side valve barrel, head + other
Replies: 8
Views: 276

Re: Unknown side valve barrel, head + other

30 has finned cases and only single mainbearing Ballrace each side. Nev

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