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by simon.holyfield
Thu Dec 06, 2018 12:43 pm
Forum: Four stroke
Topic: Introduction + NH Fork Dismantling
Replies: 6
Views: 234

Re: Introduction + NH Fork Dismantling

Welcome aboard Adrian! This post will help you to visualise the job ahead of you: http://ariel-square-four.blogspot.com/2016/01/fork-bushes.html?m=0 The fork tool is a tube with handles and a couple of square prongs that engage with slots in the chrome seal holder. As Adrie says, easy to make. Alter...
by simon.holyfield
Tue Dec 04, 2018 8:56 pm
Forum: Electrics
Topic: square 4 advance retard mechanism
Replies: 6
Views: 212

Re: square 4 advance retard mechanism

There's clearly something amiss Mark. You can do that screw up as tight as you like and the cam is still free. A thought - its a special screw. Have a look at this blog post: http://ariel-square-four.blogspot.com/2016/05/servicing-begins.html Does your screw look like that? The 25D4 distributors use...
by simon.holyfield
Mon Dec 03, 2018 8:06 pm
Forum: For sale/wanted - Parts
Topic: Large Journal Flywheel - 1958 FH
Replies: 11
Views: 373

Re: Large Journal Flywheel - 1958 FH

I'm currently waiting on Yeomans & Burton Bike bits to tell me if they have a flywheel I can buy - if not its down to waiting, or convincing myself to buy a very worn crankshaft I've found...
by simon.holyfield
Mon Dec 03, 2018 6:48 pm
Forum: For sale/wanted - Parts
Topic: Large Journal Flywheel - 1958 FH
Replies: 11
Views: 373

Re: Large Journal Flywheel - 1958 FH

It's sitting in my workshop with a couple of rods! I haven't touched it yet, but the pictures look very good and it was only £75. I had a look for shells and big end bolts for the small journal crank - there's a lot more about for the large journal crank, as you said.
by simon.holyfield
Mon Dec 03, 2018 5:47 pm
Forum: For sale/wanted - Parts
Topic: Large Journal Flywheel - 1958 FH
Replies: 11
Views: 373

Re: Large Journal Flywheel - 1958 FH

Long story. I have the original cases from my 58 FH, but the engine in it is from 55 and is very worn and has poor splines, so I looked for a new crank.

Drags had big journal crank in standard size, lovely splines, but no flywheel...
by simon.holyfield
Sun Dec 02, 2018 10:51 am
Forum: Four stroke
Topic: GB gearbox full of neutrals!
Replies: 11
Views: 315

Re: BG gearbox full on neutrals!

Mike Nash wrote:PS How do you edit titles? That "on" should "of"!


Just go back to your first post Mike. Change that and it will change the title of the thread as well.
by simon.holyfield
Sat Dec 01, 2018 11:53 am
Forum: Four stroke
Topic: 1938 ARIEL SQUARE FOUR SOLEX CARB
Replies: 10
Views: 395

Re: 1938 ARIEL SQUARE FOUR SOLEX CARB

Many thanks Stuart. Might be just the thing to sort my wayward idle speed.

Do you recall the groove dimensions you cut?
by simon.holyfield
Fri Nov 30, 2018 9:56 pm
Forum: Four stroke
Topic: Iron heads for NG/NH
Replies: 7
Views: 202

Re: Iron heads for NG/NH

The only advice I can add to this is that the cables from the carburetter on a W/NG don't clear the tank easily. A more central carburetter might be better.
by simon.holyfield
Fri Nov 30, 2018 5:53 pm
Forum: Four stroke
Topic: Sq4 frame conversion from ?
Replies: 10
Views: 384

Re: Sq4 frame conversion from ?

Don't think I've ever seen a PRF frame with a Mk1 engine. It's going to look good - are you going to use a headlamp nacelle Paul? Which rank will you use?
by simon.holyfield
Thu Nov 29, 2018 8:06 am
Forum: For sale/wanted - Parts
Topic: Large Journal Flywheel - 1958 FH
Replies: 11
Views: 373

Re: Large Journal Flywheel

adrie.degraaff wrote:I don't know what you're looking for, steel, cast, left, right ?


I'm not surprised! That wasn't very clever of me was it. I've added the the title.

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