Author Topic: Douglas 2 3/4 rear cylinder  (Read 835 times)

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Offline Brett.Wade

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Douglas 2 3/4 rear cylinder
« on: 16 Dec 2017 at 06:43 »
Hi

Does anyone know what model / year this Douglas cylinder is from?
It came with a box full of parts for 2 3/4 bike.

The inlet port being vertical is strange.

thanks
Brett
« Last Edit: 16 Dec 2017 at 08:50 by Brett.Wade »

Offline eddie

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Re: Douglas 2 3/4 rear cylinder
« Reply #1 on: 16 Dec 2017 at 11:07 »
Hi Brett,
             It is from a 1912 model that had a cast alloy inlet manifold.

  Regards,
               Eddie.

Offline Doug

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Re: Douglas 2 3/4 rear cylinder
« Reply #2 on: 16 Dec 2017 at 17:26 »
A one-year only cylinder. The 1910-11 also had a bolt on cast aluminum inlet manifold but atmospheric inlet valves and the exhaust valves were vertical. In 1913 they were back to the threaded gland joint on the inlet manifold. Having said that, 1912 was the first year Douglases started selling in large numbers so a fair number of 1912s have survived compared to earlier ones.

-Doug
« Last Edit: 16 Dec 2017 at 21:06 by Doug »

Offline Daren W Australia

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Re: Douglas 2 3/4 rear cylinder
« Reply #3 on: 16 Dec 2017 at 19:42 »
too many dougli not enough time!

Offline Brett.Wade

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Re: Douglas 2 3/4 rear cylinder
« Reply #4 on: 17 Dec 2017 at 04:55 »
Thanks for the replies guys.
I'II bury that one at the back of the shed, might use it one day.

cheers
Brett