Brum Exhaust Pipes

[charlie weeks]

I am restoring my 1960 Brum and I need an exhaust pipe. Armours no longer make them and the spares scheme do not stock them. I have approached Velocette to see if they could help and although they cannot help at the moment they did NOT rule out making some in the future. So, my questions are

1) who would DEFINITELY be interested in a reasonably priced exhaust pipe and

2) are late Shipley exhausts the same as the Brums or has the change in frame meant a different pipe ?

Exhaust are almost a consumable item so if enough of us can show a GENUINE interest in a new pipe then having a batch made might be an attractive proposition to Velocette.

Charlie Weeks

[BRIAN MARSHALL]

Hi all, If Charlie or anyone else gets this proposal up and running there is the decision to be made as to maybe use stainless steel for the pipes. I don’t suppose for one minute that the Holders would consider using stainless, but another maker may offer this option, and Alldens Exhausts for instance, only do them in stainless. One of the stumbling blocks is getting a batch of stainless flanges made, as pipe benders may well avoid doing that. I just happen to have a batch of stainless flanges sitting on one of my shelves !! These were left over from when I got a batch of two-inch left-hand pipes made a few years ago. The cost is £25 each, plus £4 for UK postage and packing. They are very good quality items and were laser cut. I can take some to Abbotsholme if there is a demand .
Brian

[charlie weeks]

Brian

That’s a start. What a prospect – a choice of ordinary or stainless ! Do you know if the Shipley and the Brum use the same pipe ? Who made your left-handers ?

Charlie

[Stan Thomas]

As far as I’m aware, the exhaust pipes on Birmingham Scotts are identical to late Shipley. (can you confim Geoff?)

However, be aware that some spurious “after market” pipes had too great a forward sweep which could contact the front mudguard upon compression of the forks. Also, where the two outlet pipes join – the right-hand pipe protruded too far into the left-hand pipe, so “masking” the gas-flow from the left-hand cylinder by some degree.

I’m bringing a couple of genuine exhaust pipes to the autojumble at Abbotsholme.

[BRIAN MARSHALL]

Armours (Bournemouth) used to sell two different pipes, one for Brum swinging-arm bikes and one for rigid frame bikes, but I don’t know what the difference was. Their Scott silencers also came in two versions, and the Brum one had a mounting lug on the body, whereas the one for rigid-framed bikes was plain, and needed a circular fixing clip around it. Strangely, they still list Scott pipes in their adverts, but a telephone enquiry usually gets a rather terse refusal ! Odd….
Brian

[BRIAN MARSHALL]

Charlie, I forgot to mention that I have had pipes made by Alldens Exhausts, near Market Raisen, North Lincs., by Custom and Classic Fabrications, very near to where I live, and by Andy Newton of Granfab, which is in the grounds of Strelley Hall, near Nottingham. The ones made by Andy Newton were the best, but he took forever to do them, (over a year !)
Brian

[Geoff Case]

hi all The late Shipley and the brum exausts are the same pattern, except for a welded on lug ,with an elongated hole to clip it to the lower frame rail. Saw it off when using on the Brum,or just leave it on!. Forget Armours,the two pipes I bought (some time ago) were a poor fit.

[charlie weeks]

All

Did try Armours and “TERSE” was definitely an accurate description of the response ! Clearly, the most important thing is getting a good fit as it seemed to be a problem in the past. Brian has tried three manufacturers and clearly favours Granfab. Do they make fabricate in steel as well as stainless ? Did he make a jig from the pattern ? they could all be made to Shipley spec and the Brums could follow Geoff’s advice regarding the bracket. ( my Brum also has the remnants of the bracket hacked off the underneath). If enough people show interest then maybe an order for ten or a dozen might bring the delivery time down.

Charlie

[BRIAN MARSHALL]

Charlie, the pipes I had made were two-inch left-hand ones, so the jig that I have here on long-term loan would be of no use to you or anyone else trying to get a batch of right-hand pipes made. Andy Newton at Granfab, formerly Newton and Sulley, will do pipes in either stainless or mild steel. He does a lot of general fabrication on vintage car bodies and chassis, so exhaust pipes are not his main source of income. What is the plural of chassis !?
Brian

[James]

this might be still available, probably not the right one..but?
https://www.ebay.co.uk/itm/Scott-2-into-1-motorcycle-exhaust-unknown-which-model-it-fits-Vintage-/141353972930?pt=UK_Motorcycle_Parts_13&hash=item20e95a74c2&nma=true&si=GZnL%252BlFsEDvITplUKYqSwzX8zKU%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557

[charlie weeks]

Brian

The plural of chassis is chassis except in Wales when it’s chassisgogogoch

Charlie

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