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Re: Colour match for green Amal TT paint?
slow learner #824001 09/16/20 5:10 pm
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Originally Posted by slow learner
A friend use to work for a company that supplied parts to aerospace industry and home-built aircraft market. They applied alodine to some aluminum parts. The process they used involved dipping the part into the solution. The color would vary depending on how long you left the part in the solution. I believe alodine was considered a protective coating like zinc-chromate on steel.

I was discussing that possibility with another forum member and he came to the conclusion that it wasn’t Alodine because the internals weren’t coated. For example, the velocity stack is coated on the outside only, so they weren’t dipped and I doubt they would brush or spray on Alodine. The fact that they aren’t coated internally also eliminates anodizing.

No answer back yet from Eastwood. I’m guessing the new improved version was a dud.

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Re: Colour match for green Amal TT paint?
Myles Raymond #824007 09/16/20 5:43 pm
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I have had this conversation about the paints used by IMI AMAL with Barry Johnson managing director of IMI AMAL. He laughed when I asked him the question. Let me put this in context. IMI is a rather large company and all buying was done through a central division. His response was, "The cheapest paint that the central stores could find. The color would vary based on who they could find the cheapest"

Re: Colour match for green Amal TT paint?
Myles Raymond #824033 09/16/20 9:31 pm
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Per John Healy;

Typical English attitude (I'm married to one.)

And the English claim the SCOTS are "cheap!"

Re: Colour match for green Amal TT paint?
Myles Raymond #824048 09/17/20 12:05 am
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A Scot cheap? If I can grind a piece of tool steel and use it remove the bezel on a Smiths magnetic tach...replace the glass and reuse the bezel, then I figure the clan should get our the pipes and the good whiskey. Should probably finish crimping the bezel back on without breaking anything before I start beating my chest.

BTW, thank you very much John. I now know in order to keep the rivet counters happy with my TT carburetor restoration, I need to seek out the cheapest paint I can find regardless of colour..... and apparently don’t have to worry about fuel resistance either.

Re: Colour match for green Amal TT paint?
Cyborg #824058 09/17/20 2:37 am
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He didn’t share the type of paint they used. While the color varied, it certainly was fuel resistant.

Re: Colour match for green Amal TT paint?
Myles Raymond #824060 09/17/20 2:52 am
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So if the cheapest color is pink?


1967 BSA Wasp
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1967 BSA Hornet (East Coast Model)
1968 BSA Firebird Scrambler
1968 BSA Spitfire Mark IV
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Re: Colour match for green Amal TT paint?
Myles Raymond #824079 09/17/20 12:10 pm
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Quote
So if the cheapest color is pink?

Sure, but only if it is a shade of gray.

Re: Colour match for green Amal TT paint?
Myles Raymond #824080 09/17/20 12:57 pm
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Two from a drawer of many - Extreme ends of the spectrum.Several with colors in between.

So for the AMAL Paint color police both original -
[Linked Image] [Linked Image]

It looks from the chipping that what ever the coating is, it is some form of "paint" or the like.

For those who care about the reflective color the pictures were taken under "warm" led lighting.

Re: Colour match for green Amal TT paint?
Myles Raymond #824086 09/17/20 3:33 pm
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Thanks, I’ll add those to my image collection. My fuel proof comment stemmed from this.. although considering the length of exposure ( dribbling out the vent) it likely would have be resistant to a reasonable degree. I was just being.....

[Linked Image from live.staticflickr.com]46DC0EB7-FBEC-4C00-AF55-3E9CBB2C9069 by First Last, on Flickr


I have a rather rare TT that has a broken spring clip and the “air funnel” as they call it is seized. A strap wrench doesn’t have enough bite to break it free, so I tried an experiment with one out of the parts drawer that was suffering from the same problem. The nut was lose, but damaged from someone using a pipe wrench and it has a mismatched jet block.

Submerged the air tunnel in molten Cerrobend. When solidified put in the freezer overnight. An aluminum bar that was a reasonably snug fit in the slide bore was heated on the stove and installed in order to help quickly heat the carb body, give a bit of leverage and help prevent in warping or distortion when rotating the body. A propane torch was also used to add heat to the body. The large lump of cold Cerrobend kept the air tunnel from expanding. Turned the carb body off which took a fair amount of force. Threads were “ok”, and there was black material that could have been some sort of thread locker. Put the can with the air tunnel back in the oven. The Cerrobend is more dense that aluminum, so the tunnel just bobs up to the surface. Turned the hash marks off the nut and used an end mill to clean up the slots.


[Linked Image from live.staticflickr.com]15138F06-474E-499A-8E1D-015756F07052 by First Last, on Flickr

[Linked Image from live.staticflickr.com]0380D52A-4365-4BB6-9D08-E812F7C5B5BB by First Last, on Flickr

[Linked Image from live.staticflickr.com]4DDFC3D6-A145-444A-A3EC-8A67105E5A19 by First Last, on Flickr

[Linked Image from live.staticflickr.com]5755BC18-042A-4C61-92E1-92CE6A4D13C4 by First Last, on Flickr

Last edited by Cyborg; 09/18/20 2:59 pm.
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Re: Colour match for green Amal TT paint?
Myles Raymond #824114 09/17/20 11:38 pm
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That velocity tube locking nut can be a stubborn one to undo if the carb has been exposed to the elements for a long time. I fabricated a simple wrench for dealing with it.

[Linked Image from i.postimg.cc]

Parking meters this time for the robot question.


1967 BSA Wasp
1967 BSA Hornet (West Coast Model)
1967 BSA Hornet (East Coast Model)
1968 BSA Firebird Scrambler
1968 BSA Spitfire Mark IV
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Re: Colour match for green Amal TT paint?
Myles Raymond #824149 09/18/20 3:30 pm
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Fortunately I haven’t had too much trouble with the lock nuts, it’s just the stacks. I thought about making a wrench with 2 tangs, but you have upped the anti. Very nicely made. I’m assuming that was cut out with CNC water jet? I’d probably never get around to assembling any bikes if I had access to one of those.


Don’t think these ones came painted.

[Linked Image from live.staticflickr.com]F87EC1FE-FFFB-4E73-89B0-8247F50133BD by First Last, on Flickr


Got a response back from Eastwood:

“Hi there,
We do not currently carry the Bronze Carb Renew anymore.

Customer Solutions Technical Support Specialist”

So I guess it remains to be seen if they don’t carry it anymore in the future.

Re: Colour match for green Amal TT paint?
Myles Raymond #824153 09/18/20 4:35 pm
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[Linked Image] [Linked Image]

Reflective color matching is an art. It requires an understanding of why color changes depending upon the source of light illuminating the object. The top picture is as the iPhone caught the light from incandescent bulbs.

What you see on your computer is influenced by the color balance of your terminal.

The lower picture was brought into photoshop and adjusted closer to what I was seeing (with no tint of green) when I took the picture. The carb bodies were more light silver than even the lower picture interprets the body color.

While I appreciate what people are looking for. You must understand to make comparisons of reflective color the original, and the copy, must be viewed under the same light source. View color under sunlight and it will look different under flash, strobe, incandescent, LED and fluorescent and the color temperature of each. As I said above this was a question asked some 40 years ago, according to Barry Johnston they used whatever color supplied by IMI company stores. And when you look at a draw full of GP and TT carbs under the same light source they vary a lot.

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Re: Colour match for green Amal TT paint?
Myles Raymond #824155 09/18/20 4:58 pm
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That's why years ago, KODAK made special color photo films for different lighting conditions.

Re: Colour match for green Amal TT paint?
Irish Swede #824160 09/18/20 5:48 pm
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Originally Posted by Cyborg
Fortunately I haven’t had too much trouble with the lock nuts, it’s just the stacks. I thought about making a wrench with 2 tangs, but you have upped the anti. Very nicely made. I’m assuming that was cut out with CNC water jet? I’d probably never get around to assembling any bikes if I had access to one of those.

Me too if having a CNC water jet. Actually though that wrench tool was made by hand. Sometimes, too much idle time will spawn innovation.


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1967 BSA Hornet (West Coast Model)
1967 BSA Hornet (East Coast Model)
1968 BSA Firebird Scrambler
1968 BSA Spitfire Mark IV
1965 Cyclone Competition Build
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Re: Colour match for green Amal TT paint?
Myles Raymond #824170 09/18/20 7:32 pm
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After seeing some of the colours, I glad they vary. Will just replicate the colour of one of my float bowls that looks ok. I’m not sure I would bother with the painting at all if it weren’t for the fact that the TT’s in question were highly polished at some point and they don’t look right to me. It’s not for show.....just want it to look right when I’m sitting there staring at the bike with a scotch in hand. Glad whoever it was didn’t go to town and polish all the numbers off.
Thanks for the info and posting the pictures John.

Re: Colour match for green Amal TT paint?
Myles Raymond #824209 09/19/20 9:47 am
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VHT make an engine enamel spray paint which may work and is available your side of the pond, see This Link.

They claim the paint has superior chemical and temp resistance and is fuel proof. There is a range of colours available including universal gold which might just be a match for your carbs.


1968 A65 Firebird
1967 B44 Shooting Star
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Re: Colour match for green Amal TT paint?
gunner #824212 09/19/20 12:47 pm
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Originally Posted by gunner
VHT make an engine enamel spray paint which may work and is available your side of the pond, see This Link.

They claim the paint has superior chemical and temp resistance and is fuel proof. There is a range of colours available including universal gold which might just be a match for your carbs.
I have used VHT engine paint products. They perform well. Having used the VHT gold color, I can say it is very gold, with a very strong gold tint.


1967 BSA Wasp
1967 BSA Hornet (West Coast Model)
1967 BSA Hornet (East Coast Model)
1968 BSA Firebird Scrambler
1968 BSA Spitfire Mark IV
1965 Cyclone Competition Build
Re: Colour match for green Amal TT paint?
Myles Raymond #824218 09/19/20 3:02 pm
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There is an auto parts store here that also specializes in paint and body supplies.... much more so than the average store or even others under the same flag. The paint department can mix pretty much whatever you want and fill a (decent) aerosol can. You just have to deal with the shelf life if it’s 2 part epoxy etc.
I do have a small gun that would be fine, but sometimes the rattle cans are preferable just so I don’t have to deal with the thinners afterwards. The guy running the paint dept is a car nut and very knowledgeable, so hopefully he is still there. I say decent aerosol can, because after using some from Japan I found out there are some out there that perform at a whole different level.

Another TT photo

[Linked Image from live.staticflickr.com]02A3258D-8E74-46AE-AB21-C3A6DBD98BBB by First Last, on Flickr

Re: Colour match for green Amal TT paint?
Myles Raymond #824298 09/20/20 6:46 pm
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I belive it to be chromate. A treatment which comes in many colors It cn be applied simply by dipping in the solution. just do a google search for green chromate. or www.fastenright.com/specials/materials-and-finishes/green-chromate-…


I APOLOGIZE FOR THE USE OF CAPS. I CAN ONLY TYPE WITH MY RIGHT HAND SO USING THE SHIFT KEY IS BEYOND MY CAPABILITES.

The Devil is in the details.

1957 BSA A10 Spitfire Scrambler (numbers matching, very correct, very nice condition)
1965 BSA A65 Lightning Rocket "Clubman" (restored)
1966 BSA A65 Spitfire MK-II (restored)
1967 BSA A65 West Coast Hornet (under restoration)
1975 Norton Commando Roadster (2100 miles)
2001 Kawasaki W650
Re: Colour match for green Amal TT paint?
Myles Raymond #824462 09/22/20 3:00 pm
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Hi all.

I have a bank of 3 T10 GP2's 1-3/16 that were used on the 1970/1 Meriden factory racing Daytona machines, all are of a silver hue although one is a darker shade than the other two, appears to be a painted finish. An AMAL spec sheet dated May 1962 (list 115/1) describes the finish as 'Bodies sprayed with durable and attractive metallic lacquer. Mixing chamber cap, plated and polished'

KR

Neil

Re: Colour match for green Amal TT paint?
Myles Raymond #824934 09/27/20 12:30 am
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I always assumed that it was a protective coating for (magnesium alloy) as used on engines like the AJS 7R. OTH it was more likely a cheapscate method of avoiding finishing the castings nicely.

Last edited by Joolstacho; 09/27/20 12:32 am.
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