Rotary Owners' Club

The two short pipes on the r/h induction tube are remnants of an oil scavenge system that became redundant. The factory mod was to connect the two together with a short piece of plastic tubing. The other pipe on the back of the r/h engine plate was also part of the redundant scavenge system. It shou...

David, I don't recall the Norton build register book being that complete. The number may have been recorded on the individual machine job cards, but I believe those cards are long gone - unless John Williams knows better of course. I have corresponded directly with Geoff on ways of removing the lock...

Just as a point of interest Mick,why on earth would you want to put a Commander/IP2 tap,on your Classic?especially as they face the wrong way evil,J.B. 'Cos the correct Classic tap is not available and, as has happened on several occasions, water in the fuel corrodes the shut-off seating face in th...

Spondon-made rockin' horse manure!
Fit IP2's as well

Mick, You can use the IP2/Commander tap 92.1783 on a Classic, but the fuel outlet stub will point forwards instead of backwards. It will need a longer fuel pipe, which doesn't look so neat, but that gives you the opportunity to fit a proper paper-element filter - always a good move. You could, of co...

Roger,
7471 is NGK's stock number for their C8E plug. That one seems best all round for Norton rotaries.
R.

Hi Miles,
You left a phone number for me to call you back.
I think the number you gave is incorrect as, at the third call, a very irate lady gave me an earfull and claimed not to know you.
Please try again on my landline, around 7pm is best.
Regards,
R.

Hi Holger,
I don't have a cross reference by part number, but that one looks to be correct for F1 and F1 Sport.
The original Yamaha part number is 26H.24500.00.
R.

Hi Roger, The only query I can answer is the front brake switch. It's a hydraulic switch that is, or should be, on a junction block bolted the the bottom yoke and cunningly hidden between the two hoses going to the brake calipers. The original Brembo items are now all 30 or more years old. There's a...

Early IP2's had a simple on/off mechanical tap on the left and a three-position vacuum tap on the right. Many engines failed because plod riders didn't turn the l/h tap off at the end of the day and as fuel evaporated from the hot float chambers, more fuel was allowed in. The evaporated fuel ended u...

Roy, The pipes are standard 3/16" brake line material, the sleeve nuts are standard 3/8" UNF. The inner end of the pipe has a conical flare. When re-assembling, use Wellseal on the nut as a lubricant and sealant. Before putting the engine back, make sure the throttle levers can move freely without b...

Hi Roy, To re-seal or replace the steel pipe, the engine has to come out for a proper job. Do you have the IP2 Workshop Manual? . to hold the eccentric shaft whilst undoing the sprocket and clutch nuts, remove the auxiliary flywheel (three M8 cap heads screws) and you'll find two 1/2" holes in the m...

Hi Geoff,
I remain hopeful that an original certificate will turn up.
When that happens, I'll contact you again.
R.

Roy, There is no plug on air-cooled engines, only water-cooled. There are two types of flexible oil pipe. Early IP2's had clear plastic pipe, fixed to the steel pipes at the engine end by screwed clips. The plastic tended to go hard with heat/age and cracks were not uncommon, particularly by the cli...

The usual reason for oil leaks at the back of the engine is wear in the throttle spindle bushes - and that's a major job to fix (engine split). Before embarking on such a venture, I suggest washing off the back of the engine with solvent and then trying to see where the oil is coming from. It may be...

Hi All, You may have noticed Jannes from Holland asking for help with Classic LE044 (the RED one!) which he's trying to convert back to standard. One of the things he would very like to have is the A4-sized certificate provided to each of the original buyers confirming the particular serial number s...

Hans,
Well done!
The only difference between the pairs of numbers for front and rear is that one is left handed and the other right.
It may be important to some owners that the lettering on the orange lens is the correct way up.

R.

They were probably XJ900F 'cos that's what we had from Yamaha as as a donor bike for parts.
BUT, the F1 has different stem lengths front/rear so one of them may be from another model.
R.

Terry,
Those lights were originally for light aero application; Whelen in USA still list them with part numbers starting 70346. As an aero part, they'll probably command a price premium though.
Woodway in Coventry were suppliers to Norton but their web site doesn't now include them.
R.

Since a fire at my home last September, all my books and files are in store and not accessible to give you the Yamaha part numbers. However, if you have a hard copy of my hand-written/illustrated F1 Parts List, you will find the Yamaha numbers in there. If not, then a pleading email to Andover Norto...

Hi Jannes,
You could put the IP2 bar on the left side and the Classic one on the right.
That would give you a better handle for lifting onto the main stand.
R.

Hi Jannes,
The chrome-plated bar is the same for both sides, but the bracket at the rear of the bar, hidden behind the plastic panel, is handed left and right.
It is possible to bend a left side bracket to make it into a right side one.
Now go find a bar and bracket! AN don't appear to have either.
R.

Registered 1985 with engine/chassis number starting with a '3' means it's an IP2 document and plate.
R.

And more:- The last is one I did for myself, with Kawasaki forks/wheels/brakes and a heavily modified Kawa rear fork.

All were done at Norton Motors Rugeley.
R.

johnbirchjar wrote: ↑

Mon Nov 18, 2019 11:41 pm

"Rare" being the operative word,how many in total?Richard?J.B.

There are/were six in total, plus the half one I did for RR's feet-forward machine. Here's few:

Scavenge level.jpg This container was an accessory car screenwasher bottle. The cap and pipes need to seal on the bottle so that induction vacuum is maintained. One pipe goes to the frame scavenge fitting, the other to the l/h induction pipe. Dispensing with the second battery was one result of hav...

... and 17" cast wheels, radial tyres, 320 mm floating front discs, Nissin 4-piston calipers, Brembo rear caliper.......

Sorry, couldn't help myself!

Hi Jannes,
That's correct - although I learned long ago that my memory doesn't always reflect what actually happened and someone else may have a more accurate 'truth'.
R.

4291, completed 02/04/1993. One of six painted green despatched to Portugal.