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by Simon.Gardiner
Tue Jul 16, 2019 11:24 pm
Forum: For sale/wanted - Bikes
Topic: Dummy Cyclone 4sale
Replies: 9
Views: 429

Re: Dummy Cyclone 4sale

According to the cyclones doc (in the AOMCC web-site docs area) the only definitive mark of a 'Cyclone' is a spec for chrome (or HS) mudguards with the machine entry in the dispatch books. If that DVLA record is correct it's odd that it's described as a Huntmaster and not a ('super rare') Cyclone. '...
by Simon.Gardiner
Mon Jul 15, 2019 11:05 pm
Forum: Four stroke
Topic: clutch and mainshaft
Replies: 35
Views: 533

Re: clutch and mainshaft

Mick Allen bolts, mid-1980s. They were working quite well as 'studs' - no bending or 'chewing'. I concluded that there might be more to material specs than just 'tensile' strength and went back to the originals with that painful tab-washer to lock them. A friend made some spindles for some old Druid...
by Simon.Gardiner
Mon Jul 15, 2019 10:47 pm
Forum: For sale/wanted - Bikes
Topic: Wanted: Square 4
Replies: 9
Views: 180

Re: Wanted: Square 4

Easy enough to replace the dualseat with a single saddle (the frames have all the lugs)....
viewtopic.php?f=4&t=9402&p=64367

SG
by Simon.Gardiner
Mon Jul 15, 2019 2:33 pm
Forum: Four stroke
Topic: clutch and mainshaft
Replies: 35
Views: 533

Re: clutch and mainshaft

The ones I've seen from unmolested bikes have all been set screws. As well as slots they might have a smaller hex size than a 'standard' bolt. The slots have always tended to be a bit 'chewed'. I once replaced a set with allen bolts (that are fairly high-tensile) - all carefully drilled, done up rea...
by Simon.Gardiner
Sat Jul 13, 2019 6:08 pm
Forum: Four stroke
Topic: NH chain alignment
Replies: 10
Views: 237

Re: NH chain alignment

Pete - has it got the right gearbox? (I think there's a gearbox letter/number reference doc on Drags site)

SG
by Simon.Gardiner
Tue Jul 09, 2019 10:58 pm
Forum: Four stroke
Topic: valve springs too strong?
Replies: 9
Views: 231

Re: valve springs too strong?

The exhaust lifter can be very stiff if there's any notching in the lug it bears on in the end of the rocker lever. I don't recall the valve springs being strong enough to make the engine difficult to turn over on the kick-start, although mine are strong enough to move the crank round to beyond wher...
by Simon.Gardiner
Fri Jun 28, 2019 9:16 pm
Forum: Ariel Talk
Topic: Is This A Stainless Rim?
Replies: 11
Views: 404

Re: Is This A Stainless Rim?

Methinks they're extremely unlikely to use more than one type of stainless steel 'cos they'll stick with the spec they've got for the application (ie wheel rims) and not mess about experimenting with more than one grade of material. (Surely would make it more expensive as well?)

SG
by Simon.Gardiner
Thu Jun 27, 2019 12:46 pm
Forum: Four stroke
Topic: VH-crank - oil supply
Replies: 24
Views: 691

Re: VH-crank - oil supply

Hi Hermann I'm no expert on the earlier bikes but there don't seem to have been different quills for VH/VG, just a change after 1940 for all models (as per Paul's notes). There are several other threads about quills in the forum. None of them directly addresses your problem but there is some discuss...
by Simon.Gardiner
Wed Jun 26, 2019 2:04 am
Forum: Four stroke
Topic: 1938 SQUARE FOUR THROTTLE CABLE PROBLEM
Replies: 6
Views: 237

Re: 1938 SQUARE FOUR THROTTLE CABLE PROBLEM

Ralph: Drags have the right sort of thing but no stock of the smaller ones - see throttle stop ferrule and related ferrule on this link (hopefully) https://www.draganfly.co.uk/triumph-shop/twin-cylinder/product/2701-throttle-stop-ferrule Feked might have some, I don't know anything about Sq.4 carbs ...
by Simon.Gardiner
Sun Jun 23, 2019 10:21 pm
Forum: Four stroke
Topic: Square Four MkI - first rides after restoration
Replies: 24
Views: 675

Re: Square Four MkI - first rides after restoration

Gui:
Dunno if this article on overhauling chronometrics is any help on the speedo issue
http://www.wdbsa.nl/Jaeger-Chronometric-Overhaul.pdf

SG

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