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by chris.shearwood
Tue May 21, 2019 7:46 pm
Forum: Four stroke
Topic: Side stand for NH
Replies: 5
Views: 136

Re: Side stand for NH

I don't trust the sidestands on any of my Ariels. The rear stands are almost always the ones I use.
by chris.shearwood
Mon May 06, 2019 4:53 pm
Forum: Four stroke
Topic: NH Magneto Sprocket
Replies: 3
Views: 136

Re: NH Magneto Sprocket

You have cleaned the shaft and interior of the sprocket with acetone or similar to remove all traces of oil?
by chris.shearwood
Sat May 04, 2019 1:17 pm
Forum: Ariel Talk
Topic: speedometer type
Replies: 10
Views: 518

Re: speedometer type

Hi Chris,
According to Roy Bacon's book, 1948 was the year all Ariels went chronometric. My 46 Sq4 has a PA.
Regards, Chris
by chris.shearwood
Thu May 02, 2019 1:17 pm
Forum: Four stroke
Topic: Hello all, New Member
Replies: 9
Views: 330

Re: Hello all, New Member

Welcome to the Forum! I think the best reference book for Ariel (and other makes) repair and maintenance is Nicholson's Modern Motorcycle Mechanics.
http://www.britcycle.com/Products/moder ... hanics.htm
by chris.shearwood
Sun Apr 28, 2019 1:11 pm
Forum: Four stroke
Topic: Square Four MkI restoration complete - almost....
Replies: 67
Views: 1548

Re: Square Four MkI restoration complete - almost....

Gui.dorey wrote: do another attempt, she fires briefly and goes out.


Hello Gui,
Your bike looks good - don't get discouraged, it is going to start eventually. You don't have your timing set 180° out do you?
Regards, Chris
by chris.shearwood
Thu Mar 28, 2019 1:03 am
Forum: Four stroke
Topic: NH 350 Chain oiler puzzle.
Replies: 6
Views: 259

Re: NH 350 Chain oiler puzzle.

Jim,
This is a photo of the oiler from my Sq4. I think yours should be similar. I agree that blocking off the hole and using a modern chain lube product is a good idea.
by chris.shearwood
Mon Mar 11, 2019 6:26 pm
Forum: Ariel Talk
Topic: Can you help me identify this speedo
Replies: 4
Views: 243

Re: Can you help me identify this speedo

Hi Bob,
Welcome to the Forum. You had better send a prayer of thanks up to your late father. That speedo is rare and highly sought after i.e. worth a lot of money.
Regards, Chris
by chris.shearwood
Fri Mar 08, 2019 12:41 pm
Forum: Four stroke
Topic: Sq 4 MK II (Solex) Reluctant to cold start
Replies: 10
Views: 385

Re: Sq 4 MK II (Solex) Reluctant to cold start

Paul,
That 40 weight oil should be O.K. for 50°F temperature. To eliminate the oil as a cause of your problem why not change what you have in there for some synthetic 15W-50? What lubricants are you using in the primary case and gearbox?
Regards, Chris
by chris.shearwood
Thu Mar 07, 2019 6:55 pm
Forum: Four stroke
Topic: Sq 4 MK II (Solex) Reluctant to cold start
Replies: 10
Views: 385

Re: Sq 4 MK II (Solex) Reluctant to cold start

Also, because when hot, the carburetor drips a bit of fuel if left on the side stand, I have taken to always storing her on the center stand, and running the fuel bowl dry at idle upon shutdown. Hello Paul, What happens if you leave the float bowl full? There should be no leakage if the bike is on ...
by chris.shearwood
Tue Mar 05, 2019 1:38 am
Forum: Four stroke
Topic: 1938 Ariel square four crank main bearing end float
Replies: 2
Views: 180

Re: 1938 Ariel square four crank main bearing end float

I've used Nicholson's specs of between .002" and .004" with no apparent problems on my Sq4.

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