Rotary Owners' Club

My understanding is that the amount of fuel coming out of the spray tube depends, amongst other things, on the difference in pressure between that point and that in the float chamber. No pressure difference = no fuel flow; high pressure difference = large fuel flow.The underside of the vacuum piston...

Dave,I presume you didn't take the carbs off the bike? I've seen a carb that didn't work after replacement because the gasket on the inlet side was upside down and the air passage was blanked off, stopping the piston working correctly. Modern gaskets seem to be symmetrical so it doesn't matter.What ...

Well done Wayne - that's an impressive display.And very brave of you to let a pensioner out on your pride & joy!

The reason the rev ounter doesn't work is because it is triggered from the left coil so it won't work until there are sparks. To be more specific, it's triggered by a feed from the 'ground, low-voltage, side of the coil. Thus, tacho doesn't work = no signal to that coil, and is an almost certain in...

Mr Neguslog on to http://www.yourstrawman.comlife as you know it will never ever be the same again, so many things in life you say to yourself, why is it so this article puts everything in perspective, and yes I also know an inventor who had his invention stopped in his tracksrant over :)roger The ...

RegistrationMost people believe that when they buy a new car or motorbike that they have to register it (in Britain, with the commercial company known as the "Driver and Vehicle Licensing Agency"). What very few people are aware of is the fact that the act of applying for registration act...

Type of cable depends on which speedo you have..if you still have the large 'police' speedo (which sits higher than the tacho) then I don't know of an alternate to the proper one..if you have a Veglia/Norton ("Made in France" on the face) then a Yamaha cable can be adapted to fit. Those of...

There's some KM48 stuff on fleabay now - including a flywheel and some engine castings.R.

Hi Warren,Memory is always suspect, but my poor photocopy of the KM37/48 Workshop Manual doesn't mention a separate balance weight at the generator/fan end of the engine.I think the drive-side flywheel is deliberately out of balance, and the fan assembly instructions are quite specific regarding its...

Some may have noticed an IP2 for sale on Ebay, registration C331*** where my name is mentioned.In the spirit of fairness to all, a PM or email to me will provide more detail of this interesting machine.

Yes, dimensionally similar and the seals are alleged to be interchangeable.Ceramic seals are £120'ish EACH and I believe they're one-piece construction although I haven't been able to see one.

Hi Paul,I feel your pain!It's quite possible that, because the tickets are free on request, those that have taken them don't feel obliged to attend to support you and the Club.I don't suppose many of the non-attendees let you know? A bit of torrential rain? Southern Wimps!A long time ago, I used to ...

Mick, With full oil and a bit of fuel, weight is alleged to be 227 kg.R.

Most of the red ones were Candy Red, the same as used on the Commando. I've not heard of a particular specification/colour code for this, but it was a red lacquer over a silver or gold base coat. It does tend to fade significantly in direct sunlight and therefore becomes difficult to match.There wer...

Joe,I'll be there from lunchtime Sunday; leave a message with Frank at the Real Classic stand.R.

It is ticking over at 2000rpm at the moment adjusted at the carb end of the cable because before it would always cut out at lights at 800-900 and I played with it for a while and it was 1000rpm but after putting it all back together it's now 2000rpm! What? There is no adjuster at the carb end of th...

[quote="rjg30091982"] Richard? Any ideas? /quote]Have a look at the choke cable where it fits into the l/h handlebar switch - is it seated correctly, with some slack in the cable?

Only in 4th though. Sad to say, but it sounds like 4th is past it's best. That's the engine out to have a look.You may be lucky and find that only mainshaft 4th gear is damaged; I think new ones are available for Andover Norton or Graham might have good used ones.If you're unlucky, 4th layshaft wil...

I looked back in my 'little black book' of Scottish trips on the white/red Commander and then the Classic.2009 home to Tebay services 153 miles, 15.6 litres to refill, 90% motorway 80'ish. Total for the weekend 1150 miles, 100.4 litres = 52 mpg.2010 total 1529, but no fuel figures.2010 total 1145 mi...

Richard,I would guess that the clutch drum is available as I think it is from a Commando, are engine drive sprockets still available? Tony Tony,Sorry to disappoint, but the clutch drum is unique to the rotary. ANIL have new in stock at an eye-watering price (and slightly cheaper than a Commando one...

Dave,Heat with a hot air gun is kinder than a flame, and less hazardous. No need to get things blue though.You've still got to break the tightening torque, but after that removal should be easy. You've got a simpler job than Tony as the flywheel restrainer holes aren't as difficult to get at.R.

Richard,Just up the road from Aberdeen RI smiley Tony Aberdeen - that means you've got all sorts of engineering expertise at hand. Laser cutting, water jet, etc??You could make a balance weight tool from 6mm plate welded to a long bar. It doesn't have to fit the balance weight profile exactly, just...

Tony,.drain primary oil.remove brake pedal.remove clutch cable & lift plate.remove cover.remove chain tensioner.remove clutch spring.undo clutch nut & sprocket nut (both should be VERY tight!).pull off primary drive.remove spiral circlip from back of clutch drum.remove sprag - Seemples! One ...

Hi Tony,The same thing - slipping sprag, but since it works on the second/third attempt, it's probably not so severe and may only be sludge trapped in the sprag space.Either way, to fix it means taking the primary apart and, even if it just sludge, I'd perhaps change the sprag anyway.While you're in...

Dave,It runs against a hardened steel sleeve pressed into the clutch drum and the hardened centre boss of the starter gear and, in my experience, the problem is always with the sprag itself. The ends of the dogs wear, producing a small flat that won't engage. If the sleeve and/or starter gear is wor...

Paul,Sorry to hear of your recurring problem; I did think that keeping the IP2 and selling the Bantam was a bit illogical but your young lady seems to have sorted that one now.By the way, I've got this immaculate one-owner Peugeot Speedfight with cockpit screen and Givi box .................... Very...

Tony,Found an old photo of the area to be sure we're talking about the same thing.Originally the Commander had a 90 degree elbow fitted there, with the aluminium rivet to blank it off. As far as I know, those are not now available so the straight one is used. 4002-42.jpg These plastic fittings used ...

Hi Tony,It's the upper part of the blanking cap on the vacuum tapping point on the left rotor housing, just above the throttle butterfly.The complete thing is a moulded straight rubber pipe, about 25 mm long, with that rivet poked in the upper end. Yours has become age-hardened and the upper part ha...

Steve,Interpol 2, Classic and Commander all have the same Lucas M3 motor.F1 has the same basic motor, but opposite rotation and a different mounting plate with 3 fixing screws rather than 2.If you have one type, but need the other, change the mount plate, and swap positions of the brushes in their h...

Wake up at the back!The Ebay description says it has 4 gears - well I think I may have the missing ones in my shed.