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S24/25 carb adjustment

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S24/25 carb adjustment

Post  Simon on Sat 02 Feb 2019, 09:42

I am runnining a s24 pos 25 carb on my falcon 87 and was wondering how many turns out the little brass screw that sits on top of the tapper needle that runs down the centre of the slide. Simon.
Simon
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Re: S24/25 carb adjustment

Post  John Wakefield on Sat 02 Feb 2019, 10:14

You need to identify if its an S24 (24mm bore) or S25 (25mm/ 1" bore) different settings for both.
Looking in the Villiers Singles and Twins book the Falcon 87 had a AMC engine with Amal carb!
So what engine is in your bike. The important thing is the length of needle not the number of turns.
Given the engine type and Carb type the settings are in the book.

John Wakefield

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needle adjustment

Post  piston 197 on Sat 02 Feb 2019, 10:36

The needle factory setting for S25 or S25 carb on Villiers 200cc engine was with the needle protruding 1.95" from the flat portion of the bottom of the slide, this may have to be increased slightly for wear, but a good starting point.#
As said above the 87 had an Amal flange fit carburettor, so a modified manifold must have been fabricated to fit it to the AMC 200 engine, unless your bike is not an 87 or has jad a Villiers engine fitted to it ?
JH
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Re: S24/25 carb adjustment

Post  John Wakefield on Sat 02 Feb 2019, 11:11

Slight correction John on the 32A/37A Villiers engine the needle setting is 1.85 but wont make much difference particularly as you say there is wear on the needle.

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Re: S24/25 carb adjustment

Post  Simon on Sat 02 Feb 2019, 11:37

Thanks again for info, engine I have is a villiers 8e engine I believe the carb is a s24, once again big thanks for your help.
Simon
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carb setting

Post  piston 197 on Sat 02 Feb 2019, 11:37

John Wakefield wrote:Slight correction John on the 32A/37A Villiers engine the needle setting is 1.85 but wont make much difference particularly as you say there is wear on the needle.


???? i said Villiers 200cc  as used by FB 7E,8E,10E engines in Falcons to 1959 , the engines you quote 32A-37A are 250cc , come on keep up ! FB only ever used a 250cc Villiers in late model 92 Trials, so my setting of 1.95" was correct for 200cc engines as i stated

Simon, looking at your avatar, if this is the bike you refer to it is a Falcon 58 , the 8E version of this in 1953 series II form used the S24 and again the setting of 1.95" is correct, please ignore John W's suggestion for irrelevant engines

JH
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Re: S24/25 carb adjustment

Post  John Wakefield on Sat 02 Feb 2019, 12:51

piston 197 wrote:
John Wakefield wrote:Slight correction John on the 32A/37A Villiers engine the needle setting is 1.85 but wont make much difference particularly as you say there is wear on the needle.


???? i said Villiers 200cc  as used by FB 7E,8E,10E engines in Falcons to 1959 , the engines you quote 32A-37A are 250cc , come on keep up ! FB only ever used a 250cc Villiers in late model 92 Trials, so my setting of 1.95" was correct for 200cc engines as i stated

Simon, looking at your avatar, if this is the bike you refer to it is a Falcon 58 , the 8E version of this in 1953 series II form used the S24 and again the setting of 1.95" is correct, please ignore John W's suggestion for irrelevant engines

JH

Yes but Simon has only sinced posted that the engine is an 8E, but it  could have been  32A fitted in place of an AMC.
So John I think you remarks regarding my post are a bit OTT The setting for the 32A engine may be helpful to other Villiers engine owners (FB or otherwise)

John Wakefield

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Re: S24/25 carb adjustment

Post  piston 197 on Sat 02 Feb 2019, 14:13

John Wakefield wrote:Slight correction John on the 32A/37A Villiers engine the needle setting is 1.85 but wont make much difference particularly as you say there is wear on the needle.

May i draw your attention to your post above ??
I had seen the 8E engine in the avatar and posted the relevant setting for 8E and 10E engines used on 200cc engines used in FB both with the S24 and S25 carburettor

You made a correction "slight correction" and added some information for 32/37A engine. The figures i gave were correct for 200cc engines as i CORRECTLY said and no "slight correction " was needed
the information you gave was for 250cc engines and not relevant to my post, surely you can see this, if not re-read your post .
Yes this might be useful data for anyone comtemplating the use of an A series engine, but it was not relevant to my post or Simons bike
JH
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Re: S24/25 carb adjustment

Post  kerabo on Sun 03 Feb 2019, 22:01

The Falcon 87 should have the Amal 376/231 carb. Bit strange if it as a Villiers carb fitted.

Ok I see now if has a Villiers engine.

Ken
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Re: S24/25 carb adjustment

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