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by chris.shearwood
Sun Jun 23, 2019 10:04 pm
Forum: Four stroke
Topic: Square Four MkI - first rides after restoration
Replies: 31
Views: 7736

Re: Square Four MkI - first rides after restoration

I have a Thorspark ignition kit. Anybody using one on a Square Four? If so what is the best way to check the timing with a strobe light? What does one use to put some marks and check? I was thinking of using the front crankshaft, by unscrewing the inspection cap and putting some marks on the nut. H...
by chris.shearwood
Thu Jun 20, 2019 2:07 am
Forum: Four stroke
Topic: MORGO PUMPS
Replies: 5
Views: 698

Re: MORGO PUMPS

£200 is a mere drop in the bucket of expenses needed to put a Sq4 together. I think the peace of mind from improved oiling is worth it.
by chris.shearwood
Wed Jun 05, 2019 1:06 pm
Forum: Four stroke
Topic: Shock absorber knocking
Replies: 56
Views: 4510

Re: Shock absorber knocking

Hi Cam, I agree with John - I too think you should get on that bike and ride it. You mentioned using 40 weight oil - why not 50? Did you use running-in oil to seat the rings? My Sq4 could emit clouds of smoke right after its refurbishment but after a few hundred miles there was no trace of smoke. Re...
by chris.shearwood
Wed May 29, 2019 8:48 pm
Forum: Main Chat Forum
Topic: Returned from Australia
Replies: 35
Views: 3078

Re: Returned from Australia

I think it has to do a bit with the mindset of Australians. That is the only country where I was strip searched before being allowed in and I've been to many countries!
by chris.shearwood
Tue May 21, 2019 7:46 pm
Forum: Four stroke
Topic: Side stand for NH
Replies: 7
Views: 871

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: 432

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: 1442

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: 813

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: 72
Views: 5416

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: 604

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.

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