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Russell
Firing on two.
Joined: November 29th, 2008, 10:05 pm
Posts: 9259
Location: West Sussex, U.K.
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 Re: Cool 2cv pictures 3. ken wrote: Russell, guess it's their version of a plenum chamber... Regarding that 'ram air' business, the probable gain would be in the order of 0.5% at 75mph. On aircraft it works much better, with about 15% gain at 350mph.  To have any chance of working, the intake should be a diffuser, with the intake widening as it approaches the carburettor. ken Ken, you must know far, far more about this than me, so how, and why would they do this? I've not seen it on any other 2cv before, yet every single one of these South American cars has a single choke carb sticking at least 8" out of the bonnet, mounted onto one of those chambers (plenum?) Obviously the cars pull high revs for long periods of time, and seem to absolutely fly...
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samfieldhouse wrote: What I like about I2F is that there is no pretence of democracy.
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| December 9th, 2009, 10:27 pm |
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ken
Agony Aunt - You have a car problem? Speak to Ken
Joined: March 6th, 2009, 1:40 am
Posts: 3675
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Re: Cool 2cv pictures 3. Russell, won't have enough time this evening to read through all of it, ( Paradox yesterday, Spooks tonite ;o) but stumbled on this lot whilst looking for some guff on plenum chambers... < http://autospeed.com/cms/title_Breathin ... ticle.html > < http://autospeed.com/cms/A_110281/artic ... larArticle > If you've looked under the bonnet of any of the Tete Rouge cars, I guess you will have noticed the airbox (aka aluminium cooking pot) arrangement, which seems to work rather well. ken
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| December 9th, 2009, 10:47 pm |
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Joolz
Firing on two.
Joined: January 5th, 2009, 5:48 am
Posts: 1687
Location: Haven't a clue
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Re: Cool 2cv pictures 3. I've seen plenum chambers used before to evenly distribute air between the inlet tracts, usually on engines with multipoint injection, but I've never seen anything quite that big, fitted after the carburettor. I'd have thought it would cause problems with the fuel dropping out (of the airflow, leading to mixture problems).
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| December 9th, 2009, 11:53 pm |
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Russell
Firing on two.
Joined: November 29th, 2008, 10:05 pm
Posts: 9259
Location: West Sussex, U.K.
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Re: Cool 2cv pictures 3. Joolz wrote: I've seen plenum chambers used before to evenly distribute air between the inlet tracts, usually on engines with multipoint injection, but I've never seen anything quite that big, fitted after the carburettor. I'd have thought it would cause problems with the fuel dropping out (of the airflow, leading to mixture problems). That's what i thought too. my assumtion was that it was injected, but they must use single choke carb.
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samfieldhouse wrote: What I like about I2F is that there is no pretence of democracy.
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| December 10th, 2009, 12:02 am |
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ken
Agony Aunt - You have a car problem? Speak to Ken
Joined: March 6th, 2009, 1:40 am
Posts: 3675
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Re: Cool 2cv pictures 3. Single choke job, 40mm diameter? Something close to those 'baked bean tin' carbs fitted on M4 engines for a short time, perhaps? ken. Russell wrote: That's what i thought too. my assumtion was that it was injected, but they must use single choke carb.
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| December 10th, 2009, 12:36 am |
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toomany2cvs
Firing on two.
Joined: December 26th, 2008, 9:40 pm
Posts: 3332
Location: Surrounded by 2cvs...
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Re: Cool 2cv pictures 3. ken wrote: Single choke job, 40mm diameter?
Something close to those 'baked bean tin' carbs fitted on M4 engines for a short time, perhaps? <waves> Bloke who rebuilt it guessed it was off a BMW 2002...
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Zookeeper of a miscellany of motorised silliness - from 0.75bhp to 9ft tall - now living life on the road in an old VW.
http://WhereverTheRoadGoes.com
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| December 10th, 2009, 12:37 am |
 
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Ventflaps
Firing on two.
Joined: December 29th, 2008, 12:16 am
Posts: 193
Location: South London
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Re: Cool 2cv pictures 3. Old-Nail wrote: Peter Mandelson's house? 
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The difference between the almost right word and the right word is really a large matter.
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| December 10th, 2009, 12:47 am |
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Russell
Firing on two.
Joined: November 29th, 2008, 10:05 pm
Posts: 9259
Location: West Sussex, U.K.
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Re: Cool 2cv pictures 3. ken wrote: Single choke job, 40mm diameter? Something close to those 'baked bean tin' carbs fitted on M4 engines for a short time, perhaps? ken. Russell wrote: That's what i thought too. my assumtion was that it was injected, but they must use single choke carb. That's what the rules say, have a butchers... http://www.competicion3cv.com.ar/tecnico.htm
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samfieldhouse wrote: What I like about I2F is that there is no pretence of democracy.
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| December 10th, 2009, 1:04 am |
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Geit
Firing on two.
Joined: November 18th, 2009, 2:10 am
Posts: 233
Location: Antwerpen - Belgium
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Re: Cool 2cv pictures 3. 2cv mobilhome  
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Membre du CAMAC - Cercle des Amateurs de Miniatures Automobiles Citroën
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| December 10th, 2009, 1:28 am |
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Jonathan
Firing on two.
Joined: January 1st, 2009, 7:37 pm
Posts: 4708
Location: Disunited Kingdom
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Re: Cool 2cv pictures 3. OOooo! Know I shouldn't, but I quite like the look of that conversion, especially if it is easy to fit/remove and won't damage paintwork.
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1988 built (1989 F-registered) Citroën 2CV-Six
2013 (63-Plate) VW Golf SE 1.4TSI BMT DSG7
1932 Morris Minor Open Two-Seater (The £100 car).
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| December 10th, 2009, 2:05 am |
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