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British Bikes / Re: 1932 Coventry eagle Silent supreme
« Last post by geoff.godwin on Today at 04:59:32 PM »Back in the day Namrick had some of them .Geoff
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British Bikes / Re: 1932 Coventry eagle Silent supreme
« Last post by Rex on Today at 09:23:33 AM ». the tricky bit is getting hold of good 9/32 taps and dies Geoff
I don't suppose fasteners in such an odd-ball size are that common either..
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British Bikes / Re: Australian-made motorcycles in the 1950s - help please
« Last post by cardan on Today at 06:52:21 AM »I came across a very original Malvern Star Autocycle in the museum in Pupanyup, not far from Horsham in country Victoria. It originally belonged to the uncle of a chap at the museum.
33d6, is this one listed on the rego records? It's a 1948 model (8M frame number prefix) and the engine number is 586/15554. Interesting to see if the original rego was in Rupanyup!
Thanks
Leon
33d6, is this one listed on the rego records? It's a 1948 model (8M frame number prefix) and the engine number is 586/15554. Interesting to see if the original rego was in Rupanyup!
Thanks
Leon
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British Bikes / Re: 1932 Coventry eagle Silent supreme
« Last post by R on Today at 12:02:48 AM »You may think it better to fit the alternative 250cc Villiers engine Cov Eagle used that year in the same machine.
Just a thought.
While this might be a 'simple' solution, it entails shock horror gasp FINDING another engine, and PAYING for another engine. !!
And also ditching the original engine. Shock horror gasp again, etc etc.
And if all ? that is missing is a couple of manifold studs, then this sounds to be well in hand.
Maybe ?
Vintage motorcycle chaps are well known for being a stubborn tenacious lot, so look forward to progress reports.
Cheers !
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British Bikes / Re: 1932 Coventry eagle Silent supreme
« Last post by 33d6 on October 03, 2026, 06:18:45 AM »Why even bother to start unless you have basic trade skills to do the job. Elderly orphan two-strokes such as this are possibly the most awkward restoration prospects. Equivalent four-strokes are simple in comparison. As the necessary 1932 Owners Handbook and Spare Parts List is available for free on the New Zealand Barnstormers site I'd look through it very carefully before I started driving myself barmy with that engine. You may think it better to fit the alternative 250cc Villiers engine Cov Eagle used that year in the same machine.
Just a thought.
Just a thought.
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British Bikes / Re: 1932 Coventry eagle Silent supreme
« Last post by geoff.godwin on October 02, 2026, 05:06:49 PM »If 1/4in bsc is too slack try 9/32 bsf .It is still 26tpi and just a 32nd bigger . I have used this size to repair a fair few 1/4 bsf ,also 26tpi . the tricky bit is getting hold of good 9/32 taps and dies Geoff
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British Bikes / Re: 1932 Coventry eagle Silent supreme
« Last post by ramwing7 on October 01, 2026, 11:16:51 PM »Nope, but I have one ordered.
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British Bikes / Re: 1932 Coventry eagle Silent supreme
« Last post by R on October 01, 2026, 10:46:19 PM »You don't have the old studs to work off ?
A thread gauge is near indispensable for this.
What happens when you try these sizes ?
They nearly have to be bsw or bsc in 1/4".
Some marques (in the 1920s) were famous for 'developing' their own sizes.
Douglas for example used some 27 tpi.
But that was more the 1920s.
A thread gauge is near indispensable for this.
What happens when you try these sizes ?
They nearly have to be bsw or bsc in 1/4".
Some marques (in the 1920s) were famous for 'developing' their own sizes.
Douglas for example used some 27 tpi.
But that was more the 1920s.
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British Bikes / 1932 Coventry eagle Silent supreme
« Last post by ramwing7 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.
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.
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British Bikes / Re: Watercooled Lewis for auction.
« Last post by cardan on October 01, 2026, 12:19:35 AM »Sorry R, the quote comes from the auction listing, and sorry again but the "no" was meant to indicate agreement with your comment! Clumsy...
My 1909 Lewis has the radiator in front of the fuel tank, but it's big and boxy and since the engine is only little (370cc-ish) it works ok. I've been on rallies with the WA bike (a 500) and I recall it was boiling a lot! Not sure if this was a design fault due to the small front area of the radiator, or whether it wasn't quite running well.
I'd be proud to own it, but have a shed full of Australian-made bikes already!
Leon
My 1909 Lewis has the radiator in front of the fuel tank, but it's big and boxy and since the engine is only little (370cc-ish) it works ok. I've been on rallies with the WA bike (a 500) and I recall it was boiling a lot! Not sure if this was a design fault due to the small front area of the radiator, or whether it wasn't quite running well.
I'd be proud to own it, but have a shed full of Australian-made bikes already!
Leon