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Douglas Motorcycles - General Discussion / Re: What Type of Douglas is this?
« Last post by Ed Byrne on 14 Mar 2019 at 19:44 »Pic three
Recent Posts
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Douglas Motorcycles - General Discussion / Re: What Type of Douglas is this?
« Last post by Ed Byrne on 14 Mar 2019 at 19:43 »More pics
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Douglas Motorcycles - General Discussion / Re: What Type of Douglas is this?
« Last post by Ed Byrne on 14 Mar 2019 at 19:42 »Picture 2
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Identifying Douglas Motorcycles / Re: Barrel identification
« Last post by BernardsE31 on 14 Mar 2019 at 17:05 »Thanks for quick comments.
It make sense for a late Aero 600 with shorter stroke and big bore.
Heads looks also quit "modern" - they dont have the cooling plugs.
Thanks Bernd
It make sense for a late Aero 600 with shorter stroke and big bore.
Heads looks also quit "modern" - they dont have the cooling plugs.
Thanks Bernd
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Identifying Douglas Motorcycles / Re: Barrel identification
« Last post by Doug on 14 Mar 2019 at 16:35 »Oops, my mistake. I was looking at the bore figures for the earlier 82mm stroke engines. The 500 and 600cc Aeros were 68 x 68 and 74 x 68 respectively. Previous post updated.
-Doug
-Doug
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Identifying Douglas Motorcycles / Re: Barrel identification
« Last post by eddie on 14 Mar 2019 at 16:22 »They could be 'Aero' as the spec sheet for the DC/38 model lists the bore size as 74mm.
Regards,
Eddie.
Regards,
Eddie.
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Identifying Douglas Motorcycles / Re: Barrel identification
« Last post by Doug on 14 Mar 2019 at 15:01 »The shape is as for the 1936-38 500/600cc Aero models. However those were not offered as a 750cc to the best of my knowledge. Just 60 and 68mm bores (68mm stroke).
-Doug
Correction, Aero models & stroke: 68 x 68 and 74 x 68.
-Doug
Correction, Aero models & stroke: 68 x 68 and 74 x 68.
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Identifying Douglas Motorcycles / Barrel identification
« Last post by BernardsE31 on 14 Mar 2019 at 12:59 »Hi,
have a pair of barrels and believe the should suitable for a 30s models.
Bore is quit large with around 75mm.
Location of ports are oposite aand not as for S6/T6 models.
Its not Mastiff as well.
Any idea?
have a pair of barrels and believe the should suitable for a 30s models.
Bore is quit large with around 75mm.
Location of ports are oposite aand not as for S6/T6 models.
Its not Mastiff as well.
Any idea?
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Douglas Motorcycles and Parts Wanted / Douglas Dragonfly rocker assemblies wanted
« Last post by matt-B on 14 Mar 2019 at 05:19 »I need a pair of complete Dragonfly rocker assemblies, can anyone please help ?
The pair i have look as though they are off a Mark.
The pair i have look as though they are off a Mark.
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Douglas Motorcycles and Parts For Sale - Private / Re: Last Dragonfly spares to go
« Last post by matt-B on 14 Mar 2019 at 05:08 »Hi, I don't suppose you still have the dragonfly rocker assemblies do you? Cheers Matt