The Place

Exit Annette stage left, discretely

Roger the cabin boy! Get down on your knees on the deck boy, and find me that golden rivett ! It's there Boy! keep looking. And whilst your at it. Did you drop my cylinder head off ? The Orange Jigger.From gods own county.

Er! Apathectic whats that mean then?

Cylinder head - what cylinder head??

Don't panic, don't panic. Haven't been working that way. However, we are Monday and Tuesday so will drop it off then. It's not as if I dropped it and had to get the corner welded back on before I took it to Reg!!

Ian

No panic ! "Jim Lad" Reg was just asking where it was. I said you had probably swopped it for one of your old ones, or sold it on ebay!

So Annettes question was a bit tongue in cheek, and just when things were starting to get interesting she "Did a runner" Well I can see the logic in her question. I dont think it was when the original machine was made thats the issue. We are governed by a period of history, and whatever we race must confirm to that period otherwise we would be using an ever dwindling number of fatigued machines.

There is nothing wrong with building a brand new chassis, and if you can find one fitting in a new BMW. Or in the case of the Weslake/Nourish buying one off the shelf. If your new Classic conforms to the given period no problem.

Manx Nortons, AJS 7Rs Matchless G50s, and Triumph Three's can also be purchased new, but they are still a Classic Bike. and lets face it in the interests of safety its a good thing too.

So after that big essay Papa Ed, have we established that a classic bike is a replica from when the bike was originally built?

Thats right my luv Simple !! But not for everyone it seems. Its best to go into detail then them what don't understand will. x

I agree with Pappa Ed, Captain of the Orange Jigger. All new modern chassis are theoretically replicating something that was built pre-1972. You may, or may not, be surprised to learn that all replica chassis, according to my eligibility sheets, seem to have a 1972 date on them!

On a more pressing matter does anyone know categorically, without a shadow of a doubt, how many master cylinders are required on a classic sidecar outfit. On my Windle I have two cylinders operated by my left foot - one does sidecar and rear wheel and the other does the front wheel. The front hydraulic cylinder operates the front disc. I, as eligibility bloke, have been asked twice now whether it is legal to have one master cylinder operated with foot and one on the bar. The rules state you have to have two separate circuits - I believe they should be plumbed in as per my Windle but I don't know 100%.

Can anyone out there categorically state whether one cylinder operated by foot is acceptable. Yes, I have read the ACU book but I'd still like clarification.

Ian

Two seperate circuits? Replicating something that was built pre-1972? There's a contradiction in terms straight away. We own at least two pre-1972 original outfits. One has only got one effective brake - on the front wheel. The other has got a front brake operated from the handlebar and a rear and sidecar brake operated from a common master cylinder actuated by the left foot.

See where you are coming from Roland but safety is a massive issue and as engines have become more powerful and outfits quicker braking systems have / need to be up to the job. As Ian writes above is how i understand it and it makes pefect sense.

remind me never to get on it

steve-e wrote:remind me never to get on it

Wimp

I'd love to have a ride on Rolands bike

I ran a servo assisted brake system on my post classic since 1989, the master cylinder had 2 separate circuits in it. As Ian says, I had one circuit for the rear & sidecar wheel & then the second circuit operated 2 calipers on the front wheel.
To the letter of the rule book these were 2 independent systems.

sidecar bloke wrote:
Can anyone out there categorically state whether one cylinder operated by foot is acceptable. Yes, I have read the ACU book but I'd still like clarification.

Ian

I was always under the impression that to comply with ACU regs you only had to have two separately plumbed braking systems, I.e. Two master cylinders operating on two circuits. (Or in Keith's's case, a front brake and the drivers face.)

BTW my 1972 chassis was built 3 years ago apparently.