Search found 912 matches

by Richard Negus
Fri Oct 19, 2018 8:38 am
Forum: technical interest and new ideas
Topic: Gasket or not?
Replies: 4
Views: 53

Re: Gasket or not?

Now....if you could just recommend a fix for the rattling front forks....... cry Mick. Mick, As a Saab dealer once said to me about a noisy gearbox, "Yes Sir, they all do that" Doug Hele came up with a fix using shims to reduce movement of the damper piston and reduce the rattle. AN may still have ...
by Richard Negus
Thu Oct 18, 2018 10:50 pm
Forum: technical interest and new ideas
Topic: Gasket or not?
Replies: 4
Views: 53

Re: Gasket or not?

There's never been a gasket there, so your sealant of choice.
ThreeBond, aka Yamabond, or RTV silicone works for me.
There's an O-ring where the elbows join to the frame; a smear of RTV there doesn't come amiss.
R.
by Richard Negus
Sat Oct 13, 2018 8:35 am
Forum: technical interest and new ideas
Topic: Commander fuel tap seal
Replies: 2
Views: 54

Re: Commander fuel tap seal

It's possible the original source might have been Yamaha as IP2 handlebar switches came from there.
Around that time, Norton tried to adapt the Yamaha XS750 into a police bike (without any commercial success) so perhaps the tap came from that model.
R.
by Richard Negus
Thu Oct 11, 2018 10:35 pm
Forum: technical interest and new ideas
Topic: Starter Sprag slipping
Replies: 14
Views: 193

Re: Starter Sprag slipping

Those starter motors were originally made for the Triumph T160. The only change for the Norton application was a new drive end plate and an oil seal. IP2/Classic/Commander motors run in the opposite direction, so had the brush wires reversed and the direction arrow on the casing re-stamped. F1 motor...
by Richard Negus
Thu Oct 11, 2018 6:00 pm
Forum: technical interest and new ideas
Topic: Starter Sprag slipping
Replies: 14
Views: 193

Re: Starter Sprag slipping

Mick Taylor wrote:
Thu Oct 11, 2018 6:46 am
.....lets hope the starter motor is an exceptionally good quality reliable part.... wink

Mick.
Of course they are! All made in 1975 by Joe 'Prince of Darkness' Lucas and built in India.
by Richard Negus
Wed Oct 10, 2018 10:30 pm
Forum: technical interest and new ideas
Topic: Starter Sprag slipping
Replies: 14
Views: 193

Re: Starter Sprag slipping

Mick,
Just dismantle all the primary drive and you'll find it in the back of the clutch drum. Some simple tools and about four hours work, end to end. Seemples!
Now if it were the starter motor that needs replacing, that's very character-building.
R.
by Richard Negus
Sun Oct 07, 2018 5:47 pm
Forum: technical interest and new ideas
Topic: Carb adjustment
Replies: 35
Views: 483

Re: Carb adjustment

Tony, Thanks for the photo; confirms what I suspected - the brass jet is redundant in the Norton rotary application, a left-over from the same carburettor with a throttle spindle and butterfly for car applications. In the flat area of the carb bore, there are two holes drilled at about 45 degrees: D...
by Richard Negus
Sat Oct 06, 2018 10:42 pm
Forum: technical interest and new ideas
Topic: Carb adjustment
Replies: 35
Views: 483

Re: Carb adjustment

I recall also squirting carb cleaner up that passage and not coming to any conclusion; tomorrow will tell.

I'm not clear whether Tony Duffield's comment suggests there was a hole but no jet, or no hole at all in one of his carbs.
Nighty night!
R.
by Richard Negus
Sat Oct 06, 2018 8:26 pm
Forum: technical interest and new ideas
Topic: Carb adjustment
Replies: 35
Views: 483

Re: Carb adjustment

Thank you again Richard, I shall have a crack at converting one of my gaskets today.....I think I'll leave the other side alone, despite the parts list pictures, both gaskets should have the cut-out as they both have a fuel/air flow at idling. Would the Mikuni stockists be these people? http://www....
by Richard Negus
Sat Oct 06, 2018 8:44 am
Forum: technical interest and new ideas
Topic: Carb adjustment
Replies: 35
Views: 483

Re: Carb adjustment

Thirty years to notice there's another error in the IP2 and Classic parts list! Fortunately, the Commander and F1 Sport lists are correct in specifying 50.0374 as the correct gasket for all SU installations. Andover don't list it as an available part, but easy enough to make from 55.0453 with either...
by Richard Negus
Fri Oct 05, 2018 10:55 pm
Forum: technical interest and new ideas
Topic: Carb adjustment
Replies: 35
Views: 483

Re: Carb adjustment

Mick, That's the outlet gasket and casting. Look at the other end of the carb for the gasket that might be wrongly assembled.. By the way, the gasket you show should have a cut-out from the main bore to match the machining on the outlet casting. Your third photo shows that machining. Did AN supply t...
by Richard Negus
Wed Oct 03, 2018 7:31 pm
Forum: technical interest and new ideas
Topic: Carb adjustment
Replies: 35
Views: 483

Re: Carb adjustment

Mick, Your fuel tap still has a prime function, but the lever plate (held with two screws) was replaced with a Norton one that doesn't allow prime to be used. This was because, if left in the prime position with a hot engine, fuel evaporates from the float chambers and ends up in the engine. The flo...
by Richard Negus
Wed Oct 03, 2018 12:58 pm
Forum: technical interest and new ideas
Topic: Fuse Block
Replies: 10
Views: 216

Re: Fuse Block

This is a two wire pattern part......is this the one Richard? That'll do the job; a longer cable allows you to put the connection in a drier place It seems worth having one just in case.. Venhill sell numerous versions of this part which on the face of it could be adapted to repair or replace a fai...
by Richard Negus
Wed Oct 03, 2018 9:12 am
Forum: technical interest and new ideas
Topic: Fuse Block
Replies: 10
Views: 216

Re: Fuse Block

The rear KTM brake switch replaces the rear stop switch of IP2's and Classics.
It will also replace the rear master cylinder bolt of Commanders and F1's for those who have a dicky original Yamaha switch.
In either case, choose the KTM switch with two wires; loads on Ebay now.
R.
by Richard Negus
Mon Oct 01, 2018 7:15 pm
Forum: technical interest and new ideas
Topic: Carb adjustment
Replies: 35
Views: 483

Re: Carb adjustment

Mick Taylor wrote:
Mon Oct 01, 2018 5:48 pm
but they did look a bit mucky.
A bit of fine Scotchbrite with cellulose thinners will fetch them up like new.
Usual precautions, etc..
R.
by Richard Negus
Mon Oct 01, 2018 5:03 pm
Forum: technical interest and new ideas
Topic: Carb adjustment
Replies: 35
Views: 483

Re: Carb adjustment

I had a few AEF's from them not so long ago so they do know about those.
Some owners of early IP2's, originally single rotor idle, may find they have an 'ADR' needle in one side. Most were converted to twin rotor idle and should have AEF needles in both sides.
R.
by Richard Negus
Mon Oct 01, 2018 8:14 am
Forum: technical interest and new ideas
Topic: Carb adjustment
Replies: 35
Views: 483

Re: Carb adjustment

Hi Mick, Places to start looking: .carb needles should be stamped 'AEF' just below the flange; SU's prototype of this was marked 'QX51', but is exactly the same needle. .check the gasket between the carburettor and its inlet casting. Original Norton ones were symmetrical but the Burlen ones can be f...
by Richard Negus
Sun Sep 02, 2018 9:10 am
Forum: general discussion (eveything else)
Topic: Forum technical problem?
Replies: 6
Views: 302

Re: Forum technical problem?

Yup! And the Dropbox photos for barney's Sport disappeared at the same time.
Just a coincidence, or doesn't the forum software muddle along with Dropbox?
R.
by Richard Negus
Fri Aug 31, 2018 6:52 pm
Forum: technical interest and new ideas
Topic: Commander gearbox
Replies: 10
Views: 366

Re: Commander gearbox

NZ Terry,
There's an email and a PM waiting for replies when you're ready.
R.
by Richard Negus
Fri Aug 24, 2018 9:17 pm
Forum: technical interest and new ideas
Topic: HELP Commander Rear Chain Gaiter
Replies: 10
Views: 345

Re: HELP Commander Rear Chain Gaiter

I believe I commented on the MZ suggestion some while ago. The MZ gaiter will not replace the Norton Item because:- .the MZ gaiter is much shorter than the Norton .the MZ chain is 428, or 1/2" x 5/16" .the Norton chain is 530, or 5/8" x 3/8" Andover Norton own the original mould tool for the Norton ...
by Richard Negus
Tue Aug 21, 2018 5:05 pm
Forum: technical interest and new ideas
Topic: Commander gearbox
Replies: 10
Views: 366

Re: Commander gearbox

C'mon Terry, (the E Yorks one), I have trouble remembering what I'm supposed to be doing sometimes, so the chances of remembering your gearbox internals are somewhat slight - unless of course I took photos. That's why I take so many photos of engine strip & rebuilds. Then all I have to do is remembe...
by Richard Negus
Tue Aug 21, 2018 12:58 pm
Forum: technical interest and new ideas
Topic: Commander gearbox
Replies: 10
Views: 366

Re: Commander gearbox

Terry, The rotary prototypes started out with T140V gear set, but Norton went their own way and strengthened all the gears and shafts with several variations of material, heat treatment, and even tooth forms, making nothing interchangeable with the Triumph items. The layshaft is a manufactured assem...
by Richard Negus
Sun Aug 19, 2018 9:27 am
Forum: technical interest and new ideas
Topic: Mirrors
Replies: 3
Views: 141

Re: Mirrors

The Commander prototypes, and the first few police bikes, had an after-market mirror from Halfords which was rectangular with a white or black moulding. Police pointed out that it didn't give a very good field of view and didn't meet the regulations requiring the reflecting surface to be at least 10...
by Richard Negus
Sat Aug 18, 2018 11:20 pm
Forum: technical interest and new ideas
Topic: Commander gearbox
Replies: 10
Views: 366

Re: Commander gearbox

As you note, the engine must come out before the gearbox internals can be accessed, and before that, the primary drive must be dismantled. A better guide to this is the Interpol 2 Workshop Manual, published by Norton, which includes illustrations and technical data. This is still available from Ando...
by Richard Negus
Fri Aug 17, 2018 2:12 pm
Forum: technical interest and new ideas
Topic: Rad Caps
Replies: 9
Views: 608

Re: Rad Caps

The cap is a GM part, taken from a 1988 Vauxhaul 1.8 Cavalier - which was what I was driving at the time.
Seems like only yesterday, going for that first drive in a NEW car!"
R.
by Richard Negus
Sat Aug 11, 2018 7:49 am
Forum: technical interest and new ideas
Topic: Steel brakes lines for air-cooled IP2/Classic
Replies: 5
Views: 264

Re: Steel brakes lines for air-cooled IP2/Classic

I agree the standard IP2/Classic set-up is a bit 'wooden'. After fitting braided hoses and various brake pads with little effect, I changed the master cylinder to one with a smaller diameter piston. The one from a Kawasaki KLX500 is a very nice one, and gave squealy-tyre braking. Both Brembo and Yam...
by Richard Negus
Sun Jul 29, 2018 10:44 pm
Forum: for sale and wanted
Topic: Chrome cap
Replies: 2
Views: 177

Re: Chrome cap

Paul,
I think I may have one or two - I'll have look tomorrow.
But of course, AN have them, 92.1059, at £3.40 + P&P + VAT.
R.
by Richard Negus
Wed Jul 25, 2018 10:37 pm
Forum: technical interest and new ideas
Topic: VCRS AGAIN!
Replies: 10
Views: 536

Re: VCRS AGAIN!

JB,
Someone always knows - Norton bought the generator and regulator direct from Kokusan in Japan. Both were also used on the twin-rotor aero engines.
R.
by Richard Negus
Sat Jun 09, 2018 12:43 pm
Forum: general discussion (eveything else)
Topic: Chassis number location
Replies: 2
Views: 343

Re: Chassis number location

Hi Blair, Turn the bars to the left and look at the r/h side of the headstock. There is, or should be, an anodised aluminium VIN plate held on by four dome-head rivets and, as David says, that is stamped with the engine/chassis number '4XXX' and the date of manufacture. The engine number is stamped ...
by Richard Negus
Sat Jun 09, 2018 8:33 am
Forum: technical interest and new ideas
Topic: speedo cable for a motometer Speedo and a veglia head
Replies: 16
Views: 730

Re: speedo cable for a motometer Speedo and a veglia head

I've found that Yamaha cables have the same thread at each end and the square on the inner cable matches too. An industry standard perhaps?
I probably used the Commander cable, Yamaha part 2GH.83550.00, which was originally that from a 1987 FZR1000.
R.