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Motorcycle Discussions => Identify these bikes! => Topic started by: R on March 25, 2026, 07:48:55 AM

Title: Lewis - What engine ?
Post by: R on March 25, 2026, 07:48:55 AM

Lewis project  (ex-Adelaide)
Said to be 1910
What engine is that

https://scontent.fbne6-1.fna.fbcdn.net/v/t39.30808-6/656653990_936403695650586_909555156376747768_n.jpg?stp=cp6_dst-jpg_tt6&_nc_cat=106&ccb=1-7&_nc_sid=e06c5d&_nc_ohc=1Byd0ztidSIQ7kNvwHLz3eK&_nc_oc=Adr2QXIju4D6UVj1SdEDGn8PkC5lOydZKbZmxiQMrhTum3_fh1n4is6iboMt0Deo-uI&_nc_zt=23&_nc_ht=scontent.fbne6-1.fna&_nc_gid=9V5lj1zNrTJq0sz6APrccg&_nc_ss=7a30f&oh=00_AfxhHqDjdEoBu-rsT0HRi3oNRBueq8leAUHIJwoPIOJhSg&oe=69C9629C

Have some vague recollection of some discussion of this - with those twin bolts in the exhaust stub like that.
AJS  ??

Title: Re: Lewis - What engine ?
Post by: cardan on March 28, 2026, 10:52:09 PM

Yes that's an engine by A.W. Wall - think ROC. It was rated 3 1/2 hp, so somewhere around 500cc. Lewis only used it 1909-10, as the Precision - or at least the Lewis engine built for Lewis by F.E. Baker - became available.

Glenn found the frame; I described the engine and told him if he could find one I'd give him the exhaust system. He found it and I gave it to him!

1910 was an extremely chaotic year at Lewis. They offered Wall, Stevens and Precision engines, air- or water-cooled, in either the old Chater Lea set (with the Simplex leaf-spring front suspension) or the new Chater Lea set with the leading link CL suspension fork.

Cheers

Leon

Title: Re: Lewis - What engine ?
Post by: cardan on March 28, 2026, 10:57:04 PM

Here's the engine in a ROC.

Title: Re: Lewis - What engine ?
Post by: R on April 17, 2026, 02:30:06 AM

Thanks Leon
Not a name that leapt out at me.

So what are these front forks ?

https://scontent.fbne5-1.fna.fbcdn.net/v/t39.30808-6/668499757_10164086329613445_3533639962214577562_n.jpg?_nc_cat=102&ccb=1-7&_nc_sid=e06c5d&_nc_ohc=fDC7Y-_3Cl8Q7kNvwH3pnhB&_nc_oc=AdrtFYLaPkYoYk5FNxFx7tIr_JwX0VaocqEKbwQZNuVxwgvb01X95oMWq6AR-9dddg4&_nc_zt=23&_nc_ht=scontent.fbne5-1.fna&_nc_gid=pA-FiittblKIqNMZFgdMQg&_nc_ss=7a389&oh=00_Af1mXmvk-JZr4tNUOhYdJBZBhTlJpo6tDucJwKvewXHAxw&oe=69E74899

I'm developing an interest in these Lewis's...

Title: Re: Lewis - What engine ?
Post by: cardan on April 19, 2026, 07:33:41 AM

Chater Lea's own spring fork, introduced in 1910.

Leon