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#525225 - 01/28/14 4:01 pm Wanted Amal Carburetor for 1950 Norton Model 7  
Joined: Nov 2011
Posts: 72
steven allen Offline
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steven allen  Offline
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Wichita, Ks. USA
1" bore or close, I believe its a AMAL model 76 or 276..let me know what you have..thanks Steve

Last edited by steven allen; 01/28/14 4:19 pm.
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#525250 - 01/28/14 7:32 pm Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: steven allen]  
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Rohan Offline
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Rohan  Offline
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Oztralia
A 76AK/1AT or 276 AK/1AT in fact.
The 1AT is the number for the sidefloat

Are you after the exact right one numbers etc, or just something close ?
Amals come up on UK eBay all the time, but you need to search very regularly - although in perfect working order may be another matter.

Brand new ones are available these days, although for $$.
But the value of having a perfect working specimen straight out of the box CANNOT be overestimated...

Someone like Martin Bratby in the UK could probably rebuild anything you find to be suitable - or maybe out of bits ?

#525400 - 01/29/14 7:24 pm Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: steven allen]  
Joined: Aug 2013
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downhere Offline
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downhere  Offline
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Australia
Are they making the spigot type though?... Sorry, I was thinking ES2.

Last edited by downhere; 01/29/14 7:26 pm.
#525449 - 01/30/14 4:13 am Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: steven allen]  
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Pete R - R.I.P. Offline
In Remembrance
Pete R - R.I.P.  Offline
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Vic. Australia
If you want to be practical and fit something that works better,just get a 626 Mk 1 AMAL Concentric.
If it has to look original,forget what I just wrote.

#525873 - 02/01/14 7:55 pm Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: Pete R - R.I.P.]  
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Rick T Online content
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Rick T  Online Content
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SW Iowa
Steve,

I have a 76AK/1AT carb if you want to PM me.

Regards,

Rick T


1952 Mat G80CS
1953 AJS 18CS
1954 Mat G9B
1954 G80CS
1955 Mat G80CS
1956 AJS 18CS
1957 Mat G80
1957 AJS 30
1958 AJS 18CS
1958 AJS 31CS
1959 Mat G80TCS
1960 Mat G80CS
1961 Mat G12CS
1961 Mat G12
1962 Mat G15/45
1964 Mat G12CSR
1966 Mat G12CSR
1967 Mat G15
#532930 - 03/14/14 10:18 pm Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: Pete R - R.I.P.]  
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chassa Offline
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Melbourne, Australia
Pete, the MK1 Concentric appears to only come in left hand & right hand. What's the diff? I assume a different angle to keep the float bowl vertical. Which would you use for the model 7?


1950 Dominator 7
1948 International 30
1951 International 30
#532957 - 03/15/14 5:47 am Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: steven allen]  
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Rohan Offline
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Rohan  Offline
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Oztralia
LH or RH Concentric is purely to do with the side the air and idle adjustment screws are on.
They are often paired on a twin, so of course you want all the adjustments to be accessable.

In a Concentric, the float bowl is at whatever angle the carb is at.
Enough angle, fuel goes straight down the throat, no arguments !

They sit flat on a Model 7 though, so no problems there.
In theory they should be an easy carb to source and set up.

But no 2 setups I've seen quoted are quite the same.
And the only one I've seen running was chugging black smoke,
so I didn't take a note of its settings. !
Triumph fitted them to 500's in the late 1960s, so those settings should be close ?

#532959 - 03/15/14 6:15 am Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: steven allen]  
Joined: Aug 2001
Posts: 6,903
triton thrasher Online content
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triton thrasher  Online Content
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scotland
AMAL probably have a specification for a Concentric or a Monobloc on your bike.

As Rohan says, it won't be exactly right and will need some tuning. So would a new 276, if it comes to that.


Amateur Loctite enthusiast.
#532965 - 03/15/14 7:10 am Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: steven allen]  
Joined: Feb 2014
Posts: 27
chassa Offline
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chassa  Offline
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Melbourne, Australia
Concentric could be worth a try. Less than half the price of a 76AK..


1950 Dominator 7
1948 International 30
1951 International 30
#532970 - 03/15/14 8:45 am Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: steven allen]  
Joined: May 2013
Posts: 4,533
Allan Gill Offline
Allan Gill  Offline



Joined: May 2013
Posts: 4,533
Rotherham - S. Yorkshire
When I have ordered Mk1's to replace Monoblocks, usually a main jet size of 20% reduction is the bench mark when fitting the Concentric. The 276 is a Pre Monoblock and would have to compare jetting between those two types to be anywhere near certain (some bike models were in production during the change over point, receiving a carb only change)

Mk1's seem to be readily available and components are at a very good price too.


beerchug
#533036 - 03/15/14 6:59 pm Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: steven allen]  
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downhere Offline
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Australia
Plenty of pre-monos on eBay. Don't spoil it with a Concentric.

#533212 - 03/16/14 7:24 pm Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: steven allen]  
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Rohan Offline
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Rohan  Offline
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Oztralia
Usually totally knackered though.
And only rarely the right size/type for a Model 7 too.

It is of course possible to buy a brand new correct AMAL from the UK.
All jetted right, and with correct numbers.
$$ though...

P.S. Enfields in India use the Mikcarb.
Cheap as chips.
Usually jetted VERY lean, for maximum fuel economy - watch out.
If you inspect closely, more 'restored' bikes have these than you would expect.
I bought one to try - haven't got around to it yet.

#533291 - 03/17/14 6:52 am Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: steven allen]  
Joined: Feb 2014
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chassa Offline
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chassa  Offline
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Melbourne, Australia
So, $'s & originality aside, is one better than the other performance wise?

By the way, new from AMAL the 76AK/1AT pre-mono is 235.00 GBP & the 626/300 Concentric is 90.00 GBP.


1950 Dominator 7
1948 International 30
1951 International 30
#533433 - 03/17/14 7:18 pm Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: steven allen]  
Joined: Aug 2001
Posts: 1,923
Rohan Offline
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Rohan  Offline
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Oztralia
Are you planning on winning races with it ?
Otherwise an AMAL is an AMAL is a carb.

They all have their good points and less good points.
The Concentric has a little strainer/fuel filter in the fuel pipe,
which makes it less sensitive to rust dust or dirt in the fuel.
(Which fuel tanks seem to be able to store up in nooks and crannies).

The 276 was original fitment it must be said though.
Worth bearing in mind, for sale time down the road...

#533507 - 03/18/14 4:57 am Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: steven allen]  
Joined: Feb 2014
Posts: 27
chassa Offline
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chassa  Offline
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Melbourne, Australia
Mmm.. Fair enough. I was thinking a nice shiny new & inexpensive (comparatively) Concentric, for starters & practicality, whilst waiting for that elusive bargain 76/AK to come along.


1950 Dominator 7
1948 International 30
1951 International 30
#534863 - 03/25/14 4:57 pm Re: Wanted Amal Carburetor for 1950 Norton Model 7 [Re: steven allen]  
Joined: Nov 2011
Posts: 72
steven allen Offline
BritBike Forum member
steven allen  Offline
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Posts: 72
Wichita, Ks. USA
I totally forgot about this post. I did purchase AMAL Carb from Rick here on the forum..I'm also looking for a Smiths Chronometric, doesn't have to work...Steve


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