Madass140 Single Throttle Cable Amal Kit

johnm

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The only way the carbs can be that far over is if the motor is wrongly positioned in the frame.

Standard Mk1 premier Amals. Standard R10 head. Standard manifolds.

New CNW isolastic that fitted in straight up. The front isolastic comes from CNW fully assembled so no chance of spacers in the wrong place. So the motor is correctly position in the frame.

So I can't see anything wrong.

I have just flipped the plate and it will all work perfectly. Also need to reverse the lifting disc but that is easy with a small spacer.
 

Time Warp

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That will do it then.
Maybe it is a fuel tank tunnel width/offset.
 

gortnipper

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I have just flipped the plate and it will all work perfectly. Also need to reverse the lifting disc but that is easy with a small spacer.
And here I was going to offer to buy it off of you. Well done.
 

johnm

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I have just measured the motor position and compared it to another 850. Identical within a mm.

So given standard Premier Mk1 on standard manifolds and standard head the only thing that can be wrong is the tank
 
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madass140

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the kit works better on MK1 Amals. If the motor is not leaning over because of bad isolastics then any interference
is caused by some aftermarket tanks or some fiberglass tanks.
 

johnm

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the kit works better on MK1 Amals. If the motor is not leaning over because of bad isolastics then any interference
is caused by some aftermarket tanks or some fiberglass tanks.
Hi

Sorry Amal Premier Mk 1 carbs. My mistake I typed it wrong.

The Isolastics are brand new. CNW.

The steel Roadster tank is original. I have owned it 41 years and know the previous owner. Talked to him about it today so the history is known from the day it left the dealer Lawton and Boyle, Adelaide Rd. Wellington NZ in 1975. According to factory records it was assembled 26 August 1974. Batch No. NM 30/74. Mind you that was a Monday.


I'm making a mirror image base plate so I can flip the cable to the right hand side. Given Commano engines are installed offset to the left there is more clearance on the right than the left.
 
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Hi whats the the cost of one of these Inc shipping to UK.
seems to me, I paid $134 shipped. Don ships these from the Philippines, and I would imagine shipping to the UK is the same as shipping to the USA - I recall the shipping part was $34, and i'm guessing it's a flat rate.
 

madass140

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Hi

Sorry Amal Premier Mk 1 carbs. My mistake I typed it wrong.

The Isolastics are brand new. CNW.

The steel Roadster tank is original. I have owned it 41 years and know the previous owner. Talked to him about it today so the history is known from the day it left the dealer Lawton and Boyle, Adelaide Rd. Wellington NZ in 1975. According to factory records it was assembled 26 August 1974. Batch No. NM 30/74. Mind you that was a Monday.


I'm making a mirror image base plate so I can flip the cable to the right hand side. Given Commano engines are installed offset to the left there is more clearance on the right than the left.
the kits are all identical, CNC machined etc. I can only guess why it wont fit your particular bike.
 

madass140

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Hi whats the the cost of one of these Inc shipping to UK.
US$100 + shipping, Shipping to anywhere in the the US seems to be pretty much the same everywhere, EVERY where else in the world
depends on Post Code NOT just by country. I only have 2 left anyway.
 
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Johnm - I'm interested in the "flipping of the plate" you did to fit your tank. I'm going to take a look today and see if that "option" will work with my Fastback tank!

Ninja - If I try that and it doesn't work, AND you can wait that long, I can bring the kit with me when we come to the UK in mid May and you can have it for 50 Pounds (I don't know where the pound symbol is on my US keyboard!). We spend 5 months in the UK (Bath) each year, from mid May to the end of Oct.
 
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US$100 + shipping, Shipping to anywhere in the the US seems to be pretty much the same everywhere, EVERY where else in the world
depends on Post Code NOT just by country. I only have 2 left anyway.
OK thanks buddy I've got a few more jobs to do so can wait.
 
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Flipping the plate didn't make any difference - my Fastback tank is symmetrical on both sides. So if you want, I'll bring it with me to Bath in May.
 

johnm

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Flipping the plate didn't make any difference - my Fastback tank is symmetrical on both sides. So if you want, I'll bring it with me to Bath in May.
Interesting.

Your tank and my Roadster tank are both symmetrical. But that's irrelevant.

The engine location and hence the carb location is NOT symmetrical.

All Norton Commando engines are installed offset to the left by 1/8 to 3/16 of an inch. 3.125 to 4.68 mm.

If you take your tank off and look vertically down at the standard installed carbs you will see the left hand carb top sticks out more than the right one.

If you instal the cable lift mechanism on the left side as supplied this offset works against you. Flipping it to the right and it works for you.

In my case I can move the mechanism about 8 mm closer to the main tube of the frame by flipping it.

The fact the tank is symmetrical doesn't matter.

The point is that the engine location and hence the carb location is NOT SYMETRICAL with respect to the main frame tube.

https://www.accessnorton.com/NortonCommando/is-the-engine-offset.13466/


Earlier I asked for any thoughts or issues as to why the left versus right instal was selected.

The only ones that occur to me is that the wiring clutch cable and rocker feed already are on the right so perhaps it was a little crowded.

And obviously in 99 cases out of 100 the left side works perfectly well.
 
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johnm

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the kits are all identical, CNC machined etc. I can only guess why it wont fit your particular bike.
Unfortunately the Commando wasn't CNC machined. ;-)

The bikes including tanks have more variation than the kit it seems.

But I think I have a solution by flipping the base plate. I'll make a new one because there is insufficient material for the repositioned carb top holes and shall report back. I'll also reverse the lifting ,"disc" which will require drilling a new grub screw location hole and a spacer. Fortunately the lifting bar is just long enough.
 

Time Warp

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It depends how much it is contacting by.
I looked at the one I have and the anchor post could be relieved a little on the outside as could the actuating arm so the cable drum could be moved inward a few mm's.
Just a bit of time in the mill for 4 mm or so if it rubbing by a small amount not including engine vibration.
 

HRD

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Mine is fitted and ready to be set up with vacuum gauges once she's running in the new year.... the only mod I have made is to replace the Philips head top cap screws into stainless cap head screws.... well pleased how it looks
"the only mod I have made is to replace the Philips head top cap screws "

Think they are posidrive,if you use a Philips driver you will mess the head of the screw.
 
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