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Topics - ramwing7

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1
British Bikes / 1932 Coventry eagle Silent supreme
« on: October 01, 2026, 09:22:57 PM »
Does anyone know the stud size for the carburetor studs on a 1932 Coventry Eagle Silent Supreme with the proprietary Coventry engine?
 Mine are in pretty nasty shape. 
I've tried to replace with a 1/4" x 26 tpi BSC on one end and 1/4" x 20 tpi on the other and that's a no go.

This thing is going to be a bear to revive.   :o

2
British Bikes / BSA B31 Rigid (1949)
« on: August 24, 2026, 05:49:39 PM »
I have a couple of questions about the clutch on a 1949 BSA B#! rigid.   It's a 6 spring clutch.
The clutch basket that came on the bike is worn beyond reasonable repair.  I manage to fine a NOS one on evilbay, but when I started reassembly I notice a couple of differences.
1.  The  band around the clutch basket that came with the bike is 1 inch wide.
     The "new" one is 1 1/4 inch.
     It seems to clear the outer cover so no rubbing or dragging is noticed.
Is that difference in width going to be a problem?

2.  My mechanics manual states that the clutch should have 5 fiber plates, although some folks went with 4 back in the day.
     My bike came with 3
Should I add one or two or is it ok with the 3?

3. Last question.  When I torque down the mainshaft clutch nut (no where near the 60 ft-lbs, but tight) the transmission seems to bind up  It turns, but is tight.


I look forward to your advice.
Thanks.

3
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

4
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.

5
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.

6
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.

7
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.

8
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

9
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.

10
British Bikes / Ariel Arrow?
« on: June 11, 2025, 02:23:23 PM »
I've pulled the wiring loom from my 1962 Ariel Arrow and am finding all sorts of interesting mysteries.  The current on is a "what's this".  Pictured below is what I'm thinking is some sort of rectifier.  I've never seen something like this, but it doesn't have anything else I would call a rectifier.
Anybody have any opinions?
Thanks.

11
British Bikes / Ariel Arrow Flasher?
« on: April 19, 2025, 08:23:50 PM »
I am starting the disassembly of a 1962 Ariel Arrow.  In removing the wiring harness, which is in very good condition, I discovered a flasher unit tucked up inside the frame.  The bike doesn't have flashers, nor any wiring intended for such.
Does anyone have a clue as to why this flasher is there?
Thanks.

12
British Bikes / What is this?
« on: March 08, 2025, 07:22:29 PM »
I have finished reassembly of my 1949 Sunbeam S7 Deluxe.
Almost.
I have one part leftover.
Does anyone recognize this?
Thanks.

13
British Bikes / Sunbeam S7D stud
« on: January 07, 2025, 06:36:15 PM »
Anyone know what size stud holds the rear Hardy-Spicer joint to the rear drive unit?
Thanks.

14
British Bikes / Ariel Arrow SS Ignition Key
« on: December 24, 2024, 04:25:06 PM »
I just picked up a 1962 Ariel Arrow SS project bike. A quick review tells me that I’m going to need quite a few parts to get this thing restored, as well as a paint job. It appears somewhere in its life it received a coat of brush applied latex paint.
I’m starting my quest with an ignition key.
Does anyone know any sources Arrow ignition keys?

A picture would be helpful in determining what type key I might be needing.

Thanks.

15
British Bikes / James ML with no spark
« on: December 14, 2024, 07:11:00 PM »
I have a 1947 James ML that won't make a spark.
I have had the flywheel re-magnetized, installed a new coil, rebuilt the points with new fiber washers, honed the points themselves to remove pits, installed a new condenser, a new sparkplug, and replaced all ignition related wiring and still no spark.  The timing is spot on as best I can understand from the Villiers manual. 
It may be that the flywheel is not going onto the crankshaft far enough, but I don't have a reference to determine this.  It looks like the lighting coils are only covering about half the magnet.  It is about 1.5 cm from the outside edge of the flywheel to the front edge of the ignition armature.

Does anyone have any pics of a flywheel in place or any other suggestions.  I'm pretty much stymied at this point.

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