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BSA Alloy Clipper #225450
11/26/08 5:59 pm
11/26/08 5:59 pm
Joined: May 2007
Posts: 58
RI, USA
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Bill Bassett Offline OP
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Bill Bassett  Offline OP
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Does anyone have any info or photos that they would sell or share on this model?
thanks,
Bill Bassett

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Re: BSA Alloy Clipper [Re: Bill Bassett] #225459
11/26/08 6:43 pm
11/26/08 6:43 pm
Joined: Sep 2001
Posts: 2,787
Comox BC Canada
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Gordo in Comox Offline
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Comox BC Canada
Bill: My understanding of the Clipper is that it refers only to the swingarm framed BB34A (Alloy) machines.

The frames are coded CB34 and most likely are without the rear footpeg loops. There is a central oil tank without the carb indent at the front that the Gold Star central tank has. The rear fender bracket is quite unique with an over the top bridge and rear loop all in one.

The Clippers sold around here all seemed to have the small steel fuel tank like the Catalina but with the smaller BSA badges. I have seen photos of the alloy scrambles tank fitted but am not sure if they left the factory like that.

The engine used the long 7 3/8 inch conrod and has the alloy top end and the head is different from the BB34 Gold Star. It has a different part number. I think that the cams were the 65-2420 profile but of course were easily changed. I think the original pistons were of moderate compression ratio. The crank has the smaller drive side roller bearing like the BB33 and does not have the bolted in steel bearing support.

Most likely the front wheel was 21 inches and the brake was the 7 inch scrambles type. The gearbox was most likely the TRI trials box.

I will dig up some photos. Details are a little vague as various markets seemed to demand different setups, at least at the dealer level. Some refs are made to a "Trials Gold Star" but it is not clear if that term always refers to the Clipper or to a normal BB34 Gold Star setup for trials. Could be an interesting topic.

Gordo

Last edited by Gordo in Comox; 11/26/08 6:52 pm.

Without frequent roadside repairs there is no fun in riding!
Re: BSA Alloy Clipper [Re: Gordo in Comox] #225473
11/26/08 7:47 pm
11/26/08 7:47 pm
Joined: May 2007
Posts: 58
RI, USA
B
Bill Bassett Offline OP
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Bill Bassett  Offline OP
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Joined: May 2007
Posts: 58
RI, USA
Gordo,
Thanks for the response, look forward to the pictures.
Bill

Re: BSA Alloy Clipper [Re: Bill Bassett] #225487
11/26/08 8:23 pm
11/26/08 8:23 pm
Joined: Apr 2002
Posts: 962
North East England
beezageezauk Offline
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beezageezauk  Offline
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North East England
Hi Bill, I'm going to post a factory picture if I can remember how to do it.

Re: BSA Alloy Clipper [Re: beezageezauk] #225488
11/26/08 8:24 pm
11/26/08 8:24 pm
Joined: Apr 2002
Posts: 962
North East England
beezageezauk Offline
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beezageezauk  Offline
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North East England
Well, it worked albeit a bit big. Beezageezauk.

Re: BSA Alloy Clipper [Re: beezageezauk] #225530
11/27/08 1:14 am
11/27/08 1:14 am
Joined: May 2007
Posts: 58
RI, USA
B
Bill Bassett Offline OP
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Posts: 58
RI, USA
Thanks Beez,
Any idea if the oil tank is chrome or painted? ALso, what type of footpegs did it have?
thanks,
Bill

Re: BSA Alloy Clipper [Re: Bill Bassett] #225532
11/27/08 1:36 am
11/27/08 1:36 am
Joined: Sep 2001
Posts: 2,787
Comox BC Canada
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Gordo in Comox Offline
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Posts: 2,787
Comox BC Canada
Bill: The oil tanks were painted steel and the pegs were the standard fixed types with the through bolt holding them on.

That photo posted above is better than anything I can find. There is a chap in AUS who makes the rear fender bracket, I will look for his email address.

Gordo


Without frequent roadside repairs there is no fun in riding!
Re: BSA Alloy Clipper [Re: Gordo in Comox] #225738
11/28/08 1:21 pm
11/28/08 1:21 pm
Joined: Dec 2006
Posts: 343
new jersey USA
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goldstarfreddie Offline
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new jersey USA
Gordo has it right also notice 2 gal tank has a breather like the goldstar with a sct gear box
i would like that email address also thanks fred

Re: BSA Alloy Clipper [Re: goldstarfreddie] #225768
11/28/08 4:45 pm
11/28/08 4:45 pm
Joined: Sep 2001
Posts: 2,787
Comox BC Canada
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Gordo in Comox Offline
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Comox BC Canada
Fred: The most recent address I have for Lee is below. A couple of years ago he was selling some very nice bits on eBay, fender stays, bash plates and the likes. I think his handle was Speedy something. He was also making the folding scrambles pegs but they were not cheap.

leeslocombe@net-tech.com.au

I spoke with brother Wilf about his Clipper (owned in the late 1950s) and he said that here we had a choice of a scrambles configuration or trials. With that came the different gearbox, piston and cams. My Clipper tank does not have the breather but others may have.

The artist conception above is one of the few from that time and it is used in some refs to represent the Clipper and at other times a trials Gold Star. I prefer photos over drawings for details but real photos are hard to find. In Bacons Illustrated Legends BSA book pge 55 there is a photo of a Clipper and it appears that there is no breather but the angle makes it hard to be sure.

Below is the alloy tanked machine "Competition B32 and B34". As well it seems that some competition units came with GS engines.

Gordo



Without frequent roadside repairs there is no fun in riding!
Re: BSA Alloy Clipper [Re: Gordo in Comox] #225889
11/29/08 6:01 am
11/29/08 6:01 am
Joined: Oct 2007
Posts: 1,279
Nanaimo, B.C. Canada
W
Wilfred Online content
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Nanaimo, B.C. Canada
Right...had a 57 Clipper which was one of the nicest of bikes. When I got it, it had had a cam change and little else. While I did ride it to work and use it for trials, it ended up as more of a scrambler with 10.5 to 1 piston and a change from the Monobloc to a TT carb, as I recall. As the gearbox had a huge jump from 2nd to 3rd, I treated the first and second gears as 2nd and 3rd for scrambles and pretended I was starting in second. I should never have sold it but I've said that about many a bike as I'm sure we all have. It was a fine steed. If I can find a snap or two and get my scanner hooked up I'll post a photo. As has been mentioned, it had no lights, but as I was riding it to work, I fitted a dummy light and just claimed that the bulb was burnt out when questioned by the local constabulary who didn't know that there was no battery, generator or wiring.....but was 1960 or so. Cheers, Wilf.


"It's about the ride..."
Re: BSA Alloy Clipper [Re: Wilfred] #225890
11/29/08 6:31 am
11/29/08 6:31 am
Joined: Sep 2001
Posts: 2,787
Comox BC Canada
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Gordo in Comox Offline
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Comox BC Canada
Wilf: Some vintage Clipper shots.

Wilf at blurring speed!


Hillclimbing near Victoria (nice fuel tank)


John Davis awaiting scrambles start on his Clipper. Victoria



Without frequent roadside repairs there is no fun in riding!
Re: BSA Alloy Clipper [Re: Wilfred] #227172
12/08/08 6:46 pm
12/08/08 6:46 pm
Joined: May 2007
Posts: 58
RI, USA
B
Bill Bassett Offline OP
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RI, USA
Does anyone know if the Alloy Clipper BB34A engine uses the same intake and exhaust valves as the B33?
thanks,
Bill Bassett

Re: BSA Alloy Clipper [Re: Bill Bassett] #227190
12/08/08 8:40 pm
12/08/08 8:40 pm
Joined: Apr 2002
Posts: 962
North East England
beezageezauk Offline
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Posts: 962
North East England
Hi Bill,
I suppose the only way to find out is to do a part number comparison. The part numbers for the B33 Inlet and Exhaust valves are (inlet) 65-1239 and (exhaust) 65-1240. This information was taken from the 1958 on parts list.
You just need the same information for the BB34A motor now.
Beezageezauk.

Re: BSA Alloy Clipper [Re: beezageezauk] #227197
12/08/08 9:24 pm
12/08/08 9:24 pm
Joined: May 2007
Posts: 58
RI, USA
B
Bill Bassett Offline OP
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Posts: 58
RI, USA
Beez,
Those are the numbers for the valves I got, they do not appear to be the same from the engine. Taking the numbers from the valves in the engine, I have 65-1633 for the exhaust and 65-1752 on the intake. I do not have a parts book as yet.
thanks,
Bill

Re: BSA Alloy Clipper [Re: Bill Bassett] #227214
12/08/08 11:28 pm
12/08/08 11:28 pm
Joined: Sep 2001
Posts: 2,787
Comox BC Canada
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Gordo in Comox Offline
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Comox BC Canada
Clipper Parts book, does one exist? Interestingly the only unique bits would be the head and maybe the valves if they are not the same as the GS. All of the other engine parts are basic B33/34 or upgraded to GS.

The early GS engine (BB style) lists 65-1632 inlet and 65-1646 exhaust. 65-1239 inlet and 65-1240 were shown for the 49-53 B33/34 but I know there are other numbers out there as I have a 65-1633 ex haust valve out of one of the engines, I think a later B33. That agrees with one of yours.

My Clipper has a BB GS head so I cannot compare but I can measure the valves for you to compare with what you are looking at.

65-1632 has a head diam of 1.725 inches with stem of 0.348 and the 65-1646 is 1.663 with stem of 0.374. They are both about 3 29/32 inches total length.

Gordo

Last edited by Gordo in Comox; 12/08/08 11:32 pm.

Without frequent roadside repairs there is no fun in riding!
Re: BSA Alloy Clipper [Re: Gordo in Comox] #227308
12/09/08 3:41 pm
12/09/08 3:41 pm
Joined: May 2007
Posts: 58
RI, USA
B
Bill Bassett Offline OP
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RI, USA
Gordo,
Thank you for the info. I believe those sizes are what I'm looking for. My cylinder head has the casting number of 65-1750 with 3744 underneath it and has the number of 1750 on the underside of the intake stub. My intake id is about 1 1/16" exhaust port 1.625. Is this anything like your bb gs head?
Bill

Re: BSA Alloy Clipper [Re: Bill Bassett] #227352
12/09/08 8:23 pm
12/09/08 8:23 pm
Joined: Sep 2001
Posts: 2,787
Comox BC Canada
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Gordo in Comox Offline
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Comox BC Canada
Bill: Both of my heads have 65-1502 with 3132 just under that number. Under the intake stub is XX on one and TX on the other. Years ago I wrote to the late John Gardner, a GS expert, and as I recall he said that the Clippers had the 65-1750 heads.

The BMS GS parts book shows 65-1501 for the GS head and that is inline with the part number and cast number being one off for some reason.

One of my heads is from the late 52 model year in the ZB34GS 5000 series that switched to the separate rocker box before the 53 model year BB engines came out. The history of the other head is not known. I originally bought it for the rockerbox attached to it as my box of ZB34GS engine bits came with the DBD rockerbox, not really usable with the long rod engines without changing the tappets, tappet guides and making custom long push rods to match the rockers and tappets .

My intakes are more like 1 3/16 or even 1 7/32, it is hard to get an accurate measure as they do not seem to be perfectly round. Who knows what previous owners did to them for tuning purposes. The 57 B34 would have had a 1 1/16 carb or a 1 1/8 carb on the Scrambler according to Bacons BSA Singles book.

Gordo


Without frequent roadside repairs there is no fun in riding!
Re: BSA Alloy Clipper [Re: Gordo in Comox] #227359
12/09/08 9:03 pm
12/09/08 9:03 pm
Joined: May 2007
Posts: 58
RI, USA
B
Bill Bassett Offline OP
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Posts: 58
RI, USA
Gordo,
I have found a new intake valve and am on the hunt for the exhaust. From my engine number, mine is fairly early in 1956. All this info is interesting. My DBD engines have bigger intake valves, smaller exhaust and much larger intake ports of 1 3/8 and 1 1/2". I aapreciate your help in supplying info.
Bill

Re: BSA Alloy Clipper [Re: Bill Bassett] #227363
12/09/08 9:26 pm
12/09/08 9:26 pm
Joined: Sep 2001
Posts: 2,787
Comox BC Canada
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Comox BC Canada
Bill: Do post some photos of your project. The Clippers are pretty rare so photos are always appreciated by those of us building them.

Gordo


Without frequent roadside repairs there is no fun in riding!
Re: BSA Alloy Clipper [Re: Wilfred] #227384
12/10/08 12:00 am
12/10/08 12:00 am
Joined: Dec 2006
Posts: 343
new jersey USA
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goldstarfreddie Offline
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new jersey USA
this is my 57 alloy clipper


Re: BSA Alloy Clipper [Re: goldstarfreddie] #227387
12/10/08 12:57 am
12/10/08 12:57 am
Joined: May 2007
Posts: 58
RI, USA
B
Bill Bassett Offline OP
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RI, USA
Gordo,
I'll post some pics as soon as mine goes past the parts gathering and living in boxes stage.

Fred,
Your bike looks really nice. The pics answer a lot of questions I have. Thank you for posting them.
Bill

Re: BSA Alloy Clipper [Re: goldstarfreddie] #227390
12/10/08 1:10 am
12/10/08 1:10 am
Joined: Sep 2001
Posts: 2,787
Comox BC Canada
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Gordo in Comox Offline
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Fred: Another great looking machine. What level of tuning is it at?

Gordo


Without frequent roadside repairs there is no fun in riding!
Re: BSA Alloy Clipper [Re: Gordo in Comox] #227394
12/10/08 1:37 am
12/10/08 1:37 am
Joined: Aug 2001
Posts: 1,875
California
Ron - in California R.I.P. Offline
In Remembrance
Ron - in California R.I.P.  Offline
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Posts: 1,875
California
Hey Fred... nice bike..!! FYI, the Alloy versions are truly a Goldie or at least a Goldie in sheeps clothing..! I wonder why they just did not call them a Goldie..? If I remember correctly, the valves are the same as the BB Goldie, even though both ports are smaller. Those bikes are lighter than the ahem "Goldie" version and run really nice..!! A true joy of a bike..!

I am sure Bill will have an awesome bike when it is done as well... pictures always appreciated..

Cheers..!!

Ron

Re: BSA Alloy Clipper [Re: Bill Bassett] #452467
09/03/12 9:32 am
09/03/12 9:32 am
Joined: Jul 2012
Posts: 56
Cambridge UK
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Interesting conversation guys-and I love the pictures of yours Freddie. I just bought one which I should have here in a few days-basically it needs a light restore-will post some pictures when I pick it up.

John


Growing Old-DISGRACEFULLY!

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