Author Topic: 1922 4hpcarburettor  (Read 318 times)

0 Members and 1 Guest are viewing this topic.

Offline Bush

  • Member
  • *
  • Join Date: Apr 2019
  • Posts: 4
  • Location: France
1922 4hpcarburettor
« on: 24 Apr 2019 at 19:50 »
hi i need a float and needle for a 1922 4hp douglas i have discovered that this is a barrel carb the throttle cable goes in the side of the carb
the machine has been sitting for 30 years in our garage after my late father never finished the restoration i have asked several motor cycle shops and the response was very negative my idea was to post the carb to a specialist to match a float and needle and post back to me but every body i askes was very negative can any body on here help ?

Offline Bush

  • Member
  • *
  • Join Date: Apr 2019
  • Posts: 4
  • Location: France
Re: 1922 4hpcarburettor
« Reply #1 on: 26 Apr 2019 at 07:57 »
hi i have had 57 views but no replys does this mean i am pushing string up hill with this bike ?i restore /overhaul/service classic cars i had a garage business for over 30 years and it seems that cars are easier than bikes for spares
can any body offer a solution ?could i get a different manifold and put a more easier carb for spares on it which would make the bike go ?
at this point not to worried about originality

Offline eddie

  • Master Member
  • ****
  • Join Date: Mar 2006
  • Posts: 1380
  • Location: Hampshire, UK
Re: 1922 4hpcarburettor
« Reply #2 on: 26 Apr 2019 at 09:14 »
If you were to post a photo of the carb it would help with it's identification, but from your description, it may be a Douglas carb. Douglas carbs had a rotary barrel rather than the normal throttle slide. Spares for Douglas carbs are few and far between, so you may have to resort to a mix and match of float and needle from other makes so that you end up with the correct fuel level. Even then you may need to do some fine tuning to get the engine running sweetly. The correct fuel level is usually set just below the point at which fuel continually leaks from the carb with the engine stationary - the induction then quickly picks up the petrol, making starting easy.

Hope this helps,
                          Regards,
                                          Eddie.

Offline Bush

  • Member
  • *
  • Join Date: Apr 2019
  • Posts: 4
  • Location: France
Re: 1922 4hpcarburettor
« Reply #3 on: 26 Apr 2019 at 14:40 »
hi thanks for the reply do you know any body
 i could post the carb to so some body could try and make some thing fit ?

                Keith

Offline roger h

  • Full Member
  • **
  • Join Date: May 2012
  • Posts: 56
  • Location: ulverston, cumbria, uk
Re: 1922 4hpcarburettor
« Reply #4 on: 30 Apr 2019 at 09:28 »
Martyn Bratby is the expert over here, for restoring and supplying parts for older carbs. Try him. 01543 572583
Roger

Offline Bush

  • Member
  • *
  • Join Date: Apr 2019
  • Posts: 4
  • Location: France
Re: 1922 4hpcarburettor
« Reply #5 on: 01 May 2019 at 08:13 »
hi roger   thanks for the reply been ringing the number but it acts as a fax machine number got any more contact détails ?

            Keith

Offline Red

  • Full Member
  • **
  • Join Date: Oct 2009
  • Posts: 89
  • Location: Basingstoke, Hampshire
Re: 1922 4hpcarburettor
« Reply #6 on: 01 May 2019 at 08:54 »


Martin Bratby :-

THE COACHOUSE WORKS LIMEPIT LANE HUNTINGDON CANNOCK STAFFS WS12 4PA, Tel:  01543 572583. Fax 01543 876202. Mobile 07772 169524