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mock up my aquaplane manifolds and twin carbs
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Paul fairall



Joined: 17 Nov 2016
Posts: 431
Location: North west Kent

PostPosted: Sat Jun 03, 2017 5:52 pm    Post subject: mock up my aquaplane manifolds and twin carbs Reply with quote

Decided to set up my manifolds and twin carbs today. Mounted the manifolds on a piece of wood clamped in the vice, much easier than bending over the car and not being able to see whats going on.

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Paul fairall



Joined: 17 Nov 2016
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Location: North west Kent

PostPosted: Sat Jun 03, 2017 5:55 pm    Post subject: Reply with quote

I was able to remove the carbs and make a heatshield that's main purpose is to secure one end of the return springs.

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Paul fairall



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PostPosted: Sat Jun 03, 2017 6:01 pm    Post subject: Reply with quote

I bought some linkage parts from Burlen but as the spindles were meant for a mini they were too short so I sent those back and used some 8mm aluminium tube and the levers from Burlen.
A question: are the two brass tubes at 45 degrees meant to connect to an engine breather, if so where should I connect them or could I blank them.

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Paul fairall



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PostPosted: Sat Jun 03, 2017 6:04 pm    Post subject: Reply with quote

another close up of the linkages

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Paul fairall



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PostPosted: Sat Jun 03, 2017 6:11 pm    Post subject: Reply with quote

another question: is the little connection pipe for a vacuum pipe to a distributor, if so I wont need it and can connect my vacuum wiper to the bsp connection on the manifold, as can be seen far right.

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Paul fairall



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PostPosted: Sat Jun 03, 2017 6:15 pm    Post subject: Reply with quote

another angle showing not very clearly the manifold on the piece of wood

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GARAGE HERMIT



Joined: 20 Mar 2017
Posts: 186
Location: stockton upon tees, cleveland,

PostPosted: Sat Jun 03, 2017 8:10 pm    Post subject: Reply with quote

my carb's dont have the 2 brass tube's, but you could use them to balance the carb's using a manometer, made out of 2 bottle's + water and some tube, i made one for my BMW m/bike, worked a treat, and cost nothing,
they probably are for engine breathing fume's, just blank them off ,

the small pipe stub will be for the dizzy, i'm just blanking mine off,

do you realise you'll have to cut a hole in your bulkhead to get the right hand carb to fit, i've just cut a hole in mine, turn's out you need 2 left carb's, no cutting then,

did you get the return spring's from burlen,?
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Paul fairall



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PostPosted: Sat Jun 03, 2017 9:27 pm    Post subject: Reply with quote

GARAGE HERMIT wrote:
my carb's dont have the 2 brass tube's, but you could use them to balance the carb's using a manometer, made out of 2 bottle's + water and some tube, i made one for my BMW m/bike, worked a treat, and cost nothing,
they probably are for engine breathing fume's, just blank them off ,

the small pipe stub will be for the dizzy, i'm just blanking mine off,

do you realise you'll have to cut a hole in your bulkhead to get the right hand carb to fit, i've just cut a hole in mine, turn's out you need 2 left carb's, no cutting then,

did you get the return spring's from burlen,?
re the bulkhead....bugger not sure I want to go down that route, maybe a rethink. Yes return springs from Burlen.
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GARAGE HERMIT



Joined: 20 Mar 2017
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Location: stockton upon tees, cleveland,

PostPosted: Sat Jun 03, 2017 10:41 pm    Post subject: Reply with quote

yes, that's what i said, bugger, but i dont want to mess about looking for a left hand carb, hence the cut,

here's a pic of 2 l/hander's, he only uses 1 carb choke, say's it start's fine, no heat sheild, said he's no problem with vapourisation, but he uses a SU elec pump, well away from the ex/manifold,
not sure where he's return spring's are located, i'll have to ask,


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Paul fairall



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PostPosted: Sat Jun 03, 2017 11:20 pm    Post subject: Reply with quote

GARAGE HERMIT wrote:
my carb's dont have the 2 brass tube's, but you could use them to balance the carb's using a manometer, made out of 2 bottle's + water and some tube, i made one for my BMW m/bike, worked a treat, and cost nothing,
they probably are for engine breathing fume's, just blank them off ,

the small pipe stub will be for the dizzy, i'm just blanking mine off,

do you realise you'll have to cut a hole in your bulkhead to get the right hand carb to fit, i've just cut a hole in mine, turn's out you need 2 left carb's, no cutting then,

did you get the return spring's from burlen,?
would like to see yours in situ. Looking at alternatives, cutting the bulkhead looks to be the easiest.
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Kleftiwallah



Joined: 27 Oct 2016
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Location: North Wiltshire

PostPosted: Sun Jun 04, 2017 9:49 am    Post subject: Reply with quote

I believe the phrase is 'highjacking a thread' so forgive me but the picture of the carb' linkages reminded me.

I'm replacing the single carb' on the BSAFWD T31 which was between the 2 air cooled cylinders for twin carbs mounted directly on the cylinders, these will be 14" apart approx' . Is there a company that stocks bespoke linkages?

Cheers, Tony.

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Rick
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PostPosted: Sun Jun 04, 2017 10:53 am    Post subject: Reply with quote

For reference, this is the '50s Aquaplane arrangement, which uses 2x SU MC2 carbs,




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GARAGE HERMIT



Joined: 20 Mar 2017
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Location: stockton upon tees, cleveland,

PostPosted: Sun Jun 04, 2017 11:16 am    Post subject: Reply with quote

Kleftiwallah wrote:
I believe the phrase is 'highjacking a thread' so forgive me but the picture of the carb' linkages reminded me.

I'm replacing the single carb' on the BSAFWD T31 which was between the 2 air cooled cylinders for twin carbs mounted directly on the cylinders, these will be 14" apart approx' . Is there a company that stocks bespoke linkages?

Cheers, Tony.

Smile


no idea what a "BSAFWD T31" is, or what carb's you're using, but you could try an old triumph m/cycle twin carb cable splitter, or similar, off a m/cycle,
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Peter_L



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PostPosted: Sun Jun 04, 2017 12:40 pm    Post subject: Reply with quote

GARAGE HERMIT wrote:

no idea what a "BSAFWD T31" is, or what carb's you're using, but you could try an old triumph m/cycle twin carb cable splitter, or similar, off a m/cycle,


I guessed it was short for BSA (British Small Arms) FWD (Front Wheel Drive) T31 (Model)

I checked with Google and they had guessed the same as me Laughing

The carbs' are SU MC2
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Paul fairall



Joined: 17 Nov 2016
Posts: 431
Location: North west Kent

PostPosted: Sun Jun 04, 2017 4:16 pm    Post subject: Reply with quote

Kleftiwallah wrote:
I believe the phrase is 'highjacking a thread' so forgive me but the picture of the carb' linkages reminded me.

I'm replacing the single carb' on the BSAFWD T31 which was between the 2 air cooled cylinders for twin carbs mounted directly on the cylinders, these will be 14" apart approx' . Is there a company that stocks bespoke linkages?

Cheers, Tony.

Smile
hijack away Tony, no problem. Yes a photo and what you want to do would help
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