Help with information please!

[DeeCee]

We are a historic village in Australia and we have recently acquired a very nice Douglas Motorcycle. I would like to write a signboard for visitors, but my research seems to have some conflicting data. I have attached a picture. I know it is 1926 and I think it is 350cc twin cylinder horizontally opposed. 2.75 hp? 3-Speed? Chain driven.
Its engine number is 85639 and frame number is CF 84722. Transmission is OG17448. It has a EIC magneto
Any information to help write a signboard for tourists would be welcome. Thanks.

[Ian]

From the identifying section of this website it most closely matches a 1926 CW26 which is a chain drive version of the 2.75 hp with, as you say, a 3 speed gearbox. The frame number seems to have one too many digits.

[eddie]

Hi,
     According to the LDMCC machine register, the frame number should be CF 8472, and it is listed as a 1926 2¾ CW. Originally, the cycle parts would have been all black - just the petrol tank would have been silver with blue panels.

  Regards,
                Eddie.

[Red]

Have a look at this link it may help with the information you need


https://www.bonhams.com/auctions/20933/lot/336/

[DeeCee]

Thank you Ian, Eddie and Red. All of that information is useful to me. I like to get those signboards correct, as there is always someone who will pick up on any mistakes.
And I am right in saying it is 350cc (well, 348 really)?? It's just that the seller had it as 600cc. The cylinder heads look too small for that.

[Ian]

Yes - 350 - certainly not a 600

[DeeCee]

Thanks. Got it sorted now.
I checked the frame number again. the second 2 is stamped sideways after the other 2. No idea why!

[cardan]

You might find that the "2 on its side" is the Douglas Trade Mark, which is a D with a K inside it, representing Douglas Kingswood.

Leon