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British Bikes / Re: Coventry Eagle 1932
« on: June 23, 2026, 03:35:22 PM »
Any idea which Villiers engine this is?
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2
British Bikes / Re: Coventry Eagle 1932
« on: June 20, 2026, 02:58:31 PM »
Thanks folks. You have to love the vintage motorcycle community. No matter how unusual the bike is or how strange the problem, somebody out there has ideas and tips they are willing to share.
I'm off pursuing some of these now.
Thanks.
I'm off pursuing some of these now.
Thanks.
3
British Bikes / Re: Coventry Eagle 1932
« on: June 17, 2026, 07:54:23 PM »
You guys are spot on with the pics. I expect I'll have to fabricate one. Might go so far as to try fabricating a model and the sandcasting one. Although welding one up is starting to appeal to me as well. Expecting a few false starts, but that's why we work on these old things. Right?
But, if you have one around and have some time for measuring, I would appreciate any help I could get.
But, if you have one around and have some time for measuring, I would appreciate any help I could get.
4
British Bikes / Coventry Eagle 1932
« on: June 16, 2026, 03:06:55 PM »
I recently came into possession of a 1932 Coventry Eagle Silent Supreme that has the Coventry proprietary engine. Sadly it's missing the intake manifold.
Does anyone have a clue where I might find one?
Thanks
Does anyone have a clue where I might find one?
Thanks
5
British Bikes / A Tale of Two Gearboxes
« on: April 08, 2026, 09:58:05 PM »
I have a 1949 BSA B31. The gearbox is a mess so I got another hoping to use two to make one serviceable.
I've come up with a situation that I cannot find any information on.
In one gearbox the mainshaft gear (24-4231) slides on the shaft easily. In the other it took 5 tons of pressure to remove the gear from the shaft and if it goes back on, it will take a press to get it there. The easily moveable one will not slide on the other shaft either.
Question is: Which it correct?
Does the mainshaft gear move along the mainshaft in normal operation or is it supposed to be fixed and stationary during operation?
Many Thanks.
I've come up with a situation that I cannot find any information on.
In one gearbox the mainshaft gear (24-4231) slides on the shaft easily. In the other it took 5 tons of pressure to remove the gear from the shaft and if it goes back on, it will take a press to get it there. The easily moveable one will not slide on the other shaft either.
Question is: Which it correct?
Does the mainshaft gear move along the mainshaft in normal operation or is it supposed to be fixed and stationary during operation?
Many Thanks.
6
British Bikes / BSA B31 Timing Inner Cover
« on: March 10, 2026, 04:56:48 PM »
I set out to replace the speedo drive bushing and what seemed to be a simple task suddenly isn't. It seems as if some goober has totally destroyed the retaining pin that holds it in.
If I remove the inner timing cover will I be able to get to the bushing and replace it?
If the answer to that is yes, the next question is how do you get the thing off?
So far I've only found two screws toward the back that seem to hold it on. That doesn't seem right.
In the attached pic, what must come off to get this plate off? My parts manual leads me to believe that the shifting mechanism stays in one piece. Do I remove all the kickstart mechanism?
My shop manual says refer to a BSA dealer. Those folks are far and between these days.
Any and all help will be greatly appreciated.
Thanks.
If I remove the inner timing cover will I be able to get to the bushing and replace it?
If the answer to that is yes, the next question is how do you get the thing off?
So far I've only found two screws toward the back that seem to hold it on. That doesn't seem right.
In the attached pic, what must come off to get this plate off? My parts manual leads me to believe that the shifting mechanism stays in one piece. Do I remove all the kickstart mechanism?
My shop manual says refer to a BSA dealer. Those folks are far and between these days.
Any and all help will be greatly appreciated.
Thanks.
8
British Bikes / BSA b31 Dynamo
« on: February 19, 2026, 05:47:49 PM »
I recently came to own a 1949 BSA B31 without a hint of a wiring harness. The magneto throws a hot spark, so I'd like to see if it will start up.
Question is will I damage the dynamo by running it under no load?
Thanks.
Question is will I damage the dynamo by running it under no load?
Thanks.
9
British Bikes / Re: Igniton points cam oiler?
« on: February 07, 2026, 04:04:45 PM »
Thanks to all. I can certainly do that
10
British Bikes / Igniton points cam oiler?
« on: February 06, 2026, 09:03:28 PM »
I recently picked up a 1949 BSA B31 in pretty much complete condition. I've been getting acquainted with it before I start any serious work.
I have a question concerning the magneto and how the ignition points cam is lubricated. The points spin around while the plate cam stays fixed. The mechanics manual gives directions for oiling a wick.
I can't find wick anywhere in the points compartment. The manual shows a picture of a fixing screw for the oil felt, but nothing resembling a felt.
Can anyone tell me where to look and what it might look like? A picture would be fantastic.
Thanks.
I have a question concerning the magneto and how the ignition points cam is lubricated. The points spin around while the plate cam stays fixed. The mechanics manual gives directions for oiling a wick.
I can't find wick anywhere in the points compartment. The manual shows a picture of a fixing screw for the oil felt, but nothing resembling a felt.
Can anyone tell me where to look and what it might look like? A picture would be fantastic.
Thanks.
11
British Bikes / Re: Bonneville's Got a Crunch
« on: October 08, 2025, 10:08:35 PM »
Yep. Pretty much did that. And the "crunch" went away.
Thanks to all.
Thanks to all.
12
British Bikes / Re: Bonneville's Got a Crunch
« on: October 08, 2025, 06:03:53 PM »
More researching leads me to believe that over ramping might be the problem.
Anyone have any ideas on how to fix this problem?
Thanks.
Anyone have any ideas on how to fix this problem?
Thanks.
13
British Bikes / Bonneville's Got a Crunch
« on: October 05, 2025, 09:41:37 PM »
I have a 1973 Triumph Bonneville T140V that is making a crunch like noise when the clutch lever is pulled in. It does it toward the end of the lever movement.
I've replaced the clutch lever, the clutch cable and all the clutch plates. I filed the slots in the clutch basket to remove rough spots and the plates seem to slide evenly.
I've now disassembled the clutch basket again, but I think I can still feel a rough spot when I push in on the end of the actuating rod. Not much, but I'm thinking that maybe the noise is being amplified by the assembled clutch plates, springs, etc.
Looking for ides as what's left that might be causing this noise.
Many thanks.
Ron
I've replaced the clutch lever, the clutch cable and all the clutch plates. I filed the slots in the clutch basket to remove rough spots and the plates seem to slide evenly.
I've now disassembled the clutch basket again, but I think I can still feel a rough spot when I push in on the end of the actuating rod. Not much, but I'm thinking that maybe the noise is being amplified by the assembled clutch plates, springs, etc.
Looking for ides as what's left that might be causing this noise.
Many thanks.
Ron
14
British Bikes / Re: Whatsit?
« on: August 12, 2025, 05:56:26 PM »
Is it blue is a VERY good question. It was blue, but appeared to be painted with something resembling latex house paint and maybe even with a brush. Darned tough stuff to get off! Like bubble gum.
Some of it was whitish under the blue. Only thing that looked even remotely like factory paint was the inside of the dynamo cover which was blue. It will remain a mystery.
The above piece is heading for a nail on the wall
Thanks all.
Some of it was whitish under the blue. Only thing that looked even remotely like factory paint was the inside of the dynamo cover which was blue. It will remain a mystery.
The above piece is heading for a nail on the wall
Thanks all.
15
British Bikes / Whatsit?
« on: August 10, 2025, 03:48:59 PM »
I bought a rolling basket case of an Ariel Arrow.
It's like putting a puzzle together without much in the way of directions. The parts manual is helpful, but I can't seem to figure out what this piece might be.
Anyone recognize it?
Thanks.
It's like putting a puzzle together without much in the way of directions. The parts manual is helpful, but I can't seem to figure out what this piece might be.
Anyone recognize it?
Thanks.