interesting bikes found randomly..

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KungFooBob
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Re: interesting bikes found randomly..

Post by KungFooBob »

I could google this, but it's more fun getting the info from here :)

I spotted this Douglas Dragonfly on FriendFace Marketplace.

Why does it have three carbs and what is the middle carb feeding?

https://www.facebook.com/share/17tm3McZzw/
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Re: interesting bikes found randomly..

Post by Dodgy69 »

Special init...Google says. 👍
Yamaha rocket 3
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Count Steer
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Re: interesting bikes found randomly..

Post by Count Steer »

Dodgy69 wrote: Wed Mar 04, 2026 8:05 am Special init...Google says. 👍
Indeed....but how the heck does it feed into the cylinders? :hmmm:

I thought it might feed premix into the two main carbs but I can't see how.

Supposed to be part of the mods to make it a 100+ mph bike. Not sure I'd want to be on it!
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Re: interesting bikes found randomly..

Post by Taipan »

NC750X mpg Image
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Ian
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Re: interesting bikes found randomly..

Post by Ian »

That front 'mudguard' appears to lack any bracing. It makes me nervous that it could tuck under and come into contact with the tyre at which point it will get dragged under.

Oh well the accident is sure to get views and likes so it's all good 👍
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Re: interesting bikes found randomly..

Post by Skub »

KungFooBob wrote: Tue Mar 03, 2026 9:31 pm I could google this, but it's more fun getting the info from here :)

I spotted this Douglas Dragonfly on FriendFace Marketplace.

Why does it have three carbs and what is the middle carb feeding?

https://www.facebook.com/share/17tm3McZzw/
Very odd. I'd be interested to know how it works.
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Re: interesting bikes found randomly..

Post by KungFooBob »

Skub wrote: Wed Mar 04, 2026 11:39 am
KungFooBob wrote: Tue Mar 03, 2026 9:31 pm I could google this, but it's more fun getting the info from here :)

I spotted this Douglas Dragonfly on FriendFace Marketplace.

Why does it have three carbs and what is the middle carb feeding?

https://www.facebook.com/share/17tm3McZzw/
Very odd. I'd be interested to know how it works.
It looks like the centre carb fed a plenum behind the block, which then fed both cylinders, you can see the intake pipes in this pic...
doug04022401-1.jpg
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I guess putting a separate carb on each inlet improves performance, but you'd think the centre carb would then be removed?
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Re: interesting bikes found randomly..

Post by Skub »

I had a yarn with our local Brit fiends. We all assumed it was a 3 carb bike,but it's actually a twin carb conversion. The carb in the centre was the original and the one on the right cylinder is the extra. You can see where the manifold was blocked off. So middle carb still feeds the left pot and the new one feeds the right.
dragonfly manifold.jpg
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Re: interesting bikes found randomly..

Post by Count Steer »

I wondered about that blanking plate but couldn't see from the pix if there was an equivalent on the other side.
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Re: interesting bikes found randomly..

Post by KungFooBob »

The other pot has a carb too...
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Re: interesting bikes found randomly..

Post by Skub »

Middle one must be a dummy,then?
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Re: interesting bikes found randomly..

Post by Count Steer »

KungFooBob wrote: Wed Mar 04, 2026 1:43 pm The other pot has a carb too...
So all is clear then. :thumbup: Blanking plate on that side too.

I couldn't see how the central carb was possibly connected to either the cylinders or the carbs when it feeds into that housing and the housing isn't connected to either - and the answer is - it doesn't, but it used to. So it's now a spare. :D

Had me head scratching last night though!
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Re: interesting bikes found randomly..

Post by Skub »

It's like the V-Max with it's fake air intakes. Even the classic boyos are at it now. :D
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Re: interesting bikes found randomly..

Post by ZRX61 »

ooh, found a skub clone...

https://www.facebook.com/marketplace/it ... c63caa435f
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Re: interesting bikes found randomly..

Post by Skub »

ZRX61 wrote: Wed Mar 04, 2026 5:42 pm ooh, found a skub clone...

https://www.facebook.com/marketplace/it ... c63caa435f
He definitely has an account with Ali-express. :sick:
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Re: interesting bikes found randomly..

Post by ZRX61 »

Skub wrote: Wed Mar 04, 2026 8:27 pm He definitely has an account with Ali-express. :sick:
Those rear-sets look more like they came from Temu...
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Re: interesting bikes found randomly..

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That's horrid.
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Re: interesting bikes found randomly..

Post by Skub »

Panther special.
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Re: interesting bikes found randomly..

Post by Count Steer »

Skub wrote: Sun Mar 08, 2026 5:54 pm Panther special.
Panther special.jpg
Seen it all now. A café racer Panther! :lol:

...with disc brakes too!
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Re: interesting bikes found randomly..

Post by Nobby »

KungFooBob wrote: Tue Mar 03, 2026 9:31 pm I could google this, but it's more fun getting the info from here :)

I spotted this Douglas Dragonfly on FriendFace Marketplace.

Why does it have three carbs and what is the middle carb feeding?

https://www.facebook.com/share/17tm3McZzw/
The centre carb is for the auxiliary engine that runs the Aircon, hydraulic pumps and electrics.
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