Rotary Owners' Club

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.

Those starter motors were originally made for the Triumph T160.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...

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

Mick.

Of course they are! All made in 1975 by Joe 'Prince of Darkness' Lucas and built in India.

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.

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...

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.

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....

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...

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...

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...

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...

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.

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.

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.

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...

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.

NZ Terry,
There's an email and a PM waiting for replies when you're ready.
R.

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 ...

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 rem...

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...

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...

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...

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.

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...

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.

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.

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 ...

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.

Thanks folks - job done!
R.

Anyone know how to get in touch with him?
I'd like to introduce him to a fellow German who is looking for help with his rotary.
R.