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General => General Douglas Discussion => Topic started by: ccew350 on 20 May 2013 at 22:08

Title: S6 throttle / twistgrip
Post by: ccew350 on 20 May 2013 at 22:08

Hi all. Can anyone help with a picture or drawing showing the parts used on a straight pull throttle assembly.
I have acquired some old parts [believed to be for an S6] and need to make a complete unit.
Any help would be appreciated.
Many thanks, Colin.

Title: Re: S6 throttle / twistgrip
Post by: Doug on 21 May 2013 at 12:07

Like this?

(https://www.douglasmotorcycles.net/aa-files/images/doug/2013/S6-twistgrip.jpg)

-Doug

Title: Re: S6 throttle / twistgrip
Post by: ccew350 on 21 May 2013 at 14:55

Doug, Many thanks for the pic, is that an Amac type.
The picture of the parts I am acquiring is enclosed.
Regards Colin.

(https://www.douglasmotorcycles.net/aa-files/images/ccew350/2013/douglas-carb-straight-pull-asembly-750.jpg)

Title: Re: S6 throttle / twistgrip
Post by: aphex on 21 May 2013 at 17:27

Hi , the item you have bought on Ebay is indeed a straight pull for an S6,but it seems that a piece is broken of , this piece is necessairy to secure it to the handlebar.I will try to post some close-up pictures next time ( showing the part missing )I think (for what i can make out of the picture) that all the parts are there ,except for the brokenof part( can possibly been repared 'aluminium'?).The straight pull is a Douglas special build for the S6 ( can be used as cruisecontrol  :wink:)

Regards,
Sven

(https://www.douglasmotorcycles.net/aa-files/images/aphex/2013/douglas-straight-pull%201-750.JPG)

(https://www.douglasmotorcycles.net/aa-files/images/aphex/2013/douglas-straight-pull%202-750.JPG)

(https://www.douglasmotorcycles.net/aa-files/images/aphex/2013/douglas-straight-pull%203-750.JPG)

Title: Re: S6 throttle / twistgrip
Post by: ccew350 on 21 May 2013 at 20:13

Many thanks Sven, that's a great help.
I look forward to the closeups if you can manage them.
Regards, Colin.

Title: Re: S6 throttle / twistgrip
Post by: cardan on 22 May 2013 at 10:13

Doug's drawing is the AMAL type - used by BSA and likely many others from 1930 on.

Leon

Title: Re: S6 throttle / twistgrip
Post by: ccew350 on 22 May 2013 at 14:27

Many thanks Leon.
Regards, Colin.

Title: Re: S6 throttle / twistgrip
Post by: aphex on 25 May 2013 at 18:08

Hi Colin,
As promised , the close-ups.

Regards
Sven.

(https://www.douglasmotorcycles.net/aa-files/images/aphex/2013/douglas-straight-pull%204-750.JPG)

(https://www.douglasmotorcycles.net/aa-files/images/aphex/2013/douglas-straight-pull%205-750.JPG)

(https://www.douglasmotorcycles.net/aa-files/images/aphex/2013/douglas-straight-pull%206-750.JPG)

(https://www.douglasmotorcycles.net/aa-files/images/aphex/2013/douglas-straight-pull%207-750.JPG)

Title: Re: S6 throttle / twistgrip
Post by: ccew350 on 25 May 2013 at 21:30

Hi Sven. Thanks very much for the close-up pictures., they are a great help. I can now try and fabricate the missing parts.
I bought it hoping that I could make something usable to fit my 1935 Comet 250 that I am building.
I have some pictures showing the same type of throttle fitted to a Comet, but thought it was an aftermarket one.
Thanks again for your help, this forum is the best.
Best regards, Colin.