How did the factory get the pattern on the tank ?
Did they have templates?

Nice pics, thanks for sharing. Lots of odds and ends in your shop, I have to limit the amount of stuff in my shop, here in Europe the average size of our workshops equals the size of an American bathroom.
So, i have to keep things well organized.

The best financed teams in Nascar can afford to change parts every race because so much is at stake, not so for the rest of the pack.. Think about a 5700cc pushrod V8 running 9000 rpm for for several hours and show almost no wear on engine parts..........No aircraft engines. used aluminum rods despite the constant search for lighter weight. Currently ,all the top running Triumphs in land speed racing use aftermarket steel or aluminum rods. Mike Baker here doing vintage road racing uses steel rods,I don't know if that typical or not.. No one wants to risk a $4000 plus engine on 60 year aluminum rods.
The Merlin was in a constant state of development and the most powerful versions had a short time between overhaul, about 100-400 hours in fighter plane use by the end of the war...This was typical of all WW2 fighter aircraft...The Merlin was a great engine not so much because of it's engine design as it was for the impressive performance of it's dual stage intercooled supercharger and RR's attention to the problems..

could very well be a typo
the 500's are a bit thin on the ground.
But as they have an domain, email them to confirm the size.

I discovered pure-gas.org which list all stations carrying non ethanol gas. I scope it out before each trip and have managed to avoid using any ethanol in any of my stuff for over 3 years now.
5 years ago I had to replace my fuel pump in my truck because of rust clogs caused by ethanol carrying water in my fuel system. I also found I get much better milage . Not sure it's all that green,
taking into account the amount of diesel burned planting and harvesting corn.

Hi Rohan, it has stamped 3717..maybe a small letter before the number possibly N. Nothing below it.

Cant locate a 55 sales brochure but 56 certainly shows the rank is very similar to a 53 but now with a badge. I think your explan may be correct..the original tank expired. There was at least one more ES2 on Zanzibar from what the seller told me..and he even knew the village... so the owner either could have ordered a new tank from probablythe mainland Tanganyika ( as it then was) agent or found a later model one.

Has anyone had experience of the Indian tanks for Norton? I got one for a BSA A7SS via a UK dealer. It was quite good except they had added an inch of height to the tank and a rather more bulbous look.

I put in 20 pilot jets. The 15s made for a flat spot just off idle.
Painted the chain guard I bought at Barber.
I refit the tail light and installed turn signals on the Trident, almost ready to ride.

Sorry to hear this, Fernando, thoughts are with you !

I don't know if this stuff is actually Red-Kote or some other brand, but that tech paper says nothing about dye leeching into the fuel.
I can think of no reason to add the color in the first place.
In any case, I plan to buy a large can of acetone to get the stuff out. I will not have spilled fuel coloring my engine cases!!
Just more lame-ass "engineering."
If you're gonna spend five years learning how to build things at least DO IT RIGHT!

Hey MM! What's your de-rusting solution of choice?

It's always a big mystery to what's inside the engines with these guys.....You and me are the only guys who tell all...

Thanks, Steve. Tell us more about your "new" TR5T.

That e-Bay bike -- thanks for the link -- very clean. I'm aiming for 300 pounds street legal for mine, just ordered the Petty fenders today.

BTW, you can take those long URLs and make them tiny with www.tinyurl.com -- here's the e-Bay link to the TR5T made tiny:
https://tinyurl.com/y9yzomc5

you're right, dave. physical constants have physical reasons, and physics doesn't lie.

but the constants in the pipe formulas seem more corrections, trying to lump a bunch of unmeasured parameters together, and they're not explained. fuel/air emulsions are not ideal gases, and vary in density along the pipe, and change unpredictably due to reversion. even the initial composition and temperature of the gas varies with the jetting and the cam timing, and is not included in the formulas.

i can't measure the specific heat of my mixture at 66 F, RAD 108, 140 main jets, and then correct it when i switch to 140 main jets.

with pipe resonance, the harmonic waves in a perfectly straight tube may or may not correspond to the passage of mixture through a slide carburetor and port of differing radius over a few inches.

i'm not disagreeing with science, i'm just pointing out that perfect predictions require perfect conditions. i'm much more comfortable using science only for a first approximation, and then just testing my way through. i don't have to understand what works, just that it does.