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by Gui.dorey
Sat Dec 26, 2020 10:27 am
Forum: Four stroke
Topic: NH 350 - sprockets and chain wheels
Replies: 10
Views: 754

Re: NH 350 - sprockets and chain wheels

Hi Will, Here are some pics of the wheel. It’s not fully assembled, but I hope you can see more or less how it goes. I don’t know if the sprockets are Ariel or not, but I assume they are. Except maybe the engine sprocket, all the others are very worn, especially the rear chain wheel. So I’m afraid I...
by Gui.dorey
Wed Dec 23, 2020 7:45 pm
Forum: Four stroke
Topic: NH 350 - sprockets and chain wheels
Replies: 10
Views: 754

NH 350 - sprockets and chain wheels

Hi chaps, I‘m bringing my 1955 NH swinging arm back to life and most of the sprockets and chain wheels need to be replaced. I‘m getting a bit confused on the Nr of teeth and ratios, so could you please confirm what are the standard sizes - and compared to what is on my bike at the moment, how does t...
by Gui.dorey
Fri Dec 11, 2020 5:52 pm
Forum: Four stroke
Topic: Engine Rebuild help
Replies: 38
Views: 1917

Re: Engine Rebuild help

Answer to the last question: breather.
by Gui.dorey
Fri Dec 11, 2020 10:33 am
Forum: Four stroke
Topic: Always check and clean your sludge traps
Replies: 4
Views: 476

Always check and clean your sludge traps

Hi chaps,

Started on my new winter project - a 1954 NH.
Opened up the engine, which looks to be in good shape. However, take a look at what I found when I opened up the sludge trap. Everything completely blocked!!!

Always worth checking when trying to bring one of these back to life.

Cheers
Gui
by Gui.dorey
Thu Dec 03, 2020 11:17 pm
Forum: Four stroke
Topic: 350 NH Rocker arm disassembly
Replies: 8
Views: 348

Re: 350 NH Rocker arm disassembly

Paul, Brilliant information as always. Thank you. Simes, I would say you probably don‘t need any special treatment or steel. Like I said, I used an old tyre iron which I ground to fit the slots. It worked even though the dome nut was frozen on the thread with rust. It took quite a bit of force until...
by Gui.dorey
Thu Dec 03, 2020 1:50 pm
Forum: Four stroke
Topic: 350 NH Rocker arm disassembly
Replies: 8
Views: 348

Re: 350 NH Rocker arm disassembly

Got it! Gentle persuasion and an old tyre iron ground down to fit the grooves on that spindle.
by Gui.dorey
Thu Dec 03, 2020 1:05 pm
Forum: Four stroke
Topic: 350 NH Rocker arm disassembly
Replies: 8
Views: 348

Re: 350 NH Rocker arm disassembly

My biggest screw driver is too small.
I did try with a scrap piece, which I cut and ground to fit on those grooves, but it just bent...
Was hopping someone had maybe another trick. Will try to find a stronger piece of something and try again...
by Gui.dorey
Thu Dec 03, 2020 11:49 am
Forum: Four stroke
Topic: 350 NH Rocker arm disassembly
Replies: 8
Views: 348

350 NH Rocker arm disassembly

I've just started to work on my 1954 NH and am having difficulty in disassembling one of the rocker arms. The dome nut on the oil line side is quite stuck and I can't undo it. I got it to move, but it rotates the whole rocker spindle with it instead of unscrewing. When I held the other end - the lar...
by Gui.dorey
Wed Dec 02, 2020 9:05 pm
Forum: Main Chat Forum
Topic: Hi all!
Replies: 24
Views: 1164

Re: Hi all!

JSpencer wrote:i've my first copy of cheval comes through, i'll take a look.


Take a look at the e-mail confirming your membership. The log in details should be in the mail so you don‘t have to wait for your first cheval.
by Gui.dorey
Wed Dec 02, 2020 6:33 pm
Forum: Main Chat Forum
Topic: Hi all!
Replies: 24
Views: 1164

Re: Hi all!

My best advice is to check here first before you do any work on it. Even taking the head off can be a nightmare of broken fins and other damage if you are doing it for the first time.

Great bike you have there.

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