size of tank on AD ( dimensions )

pistnbroke · Post by **pistnbroke** » Tue Sep 30, 2008 10:31 pm

Have no tank on my AD so would be interested to know the size ...looks like 4 in dia but the lenth ...???
And the spacing of the two pegs on the rear would be useful too

got the brass sheet ...all ready to start !!!

Anybody with one bashed up beyond repair please let me know ..wife leaves for UK next week .....great its seagull time.....

Post by **charlesp** » Tue Sep 30, 2008 11:22 pm

You mean you've sent her over here just to get you a tank? Wow those sheilas really know how to keep a man happy!

Dimensions for an AD are same as a standard 102 brass tank, so any will do. I can't remember if they had a bayonet fitting in 1947, I'll have a look when I get to my workshop. I'm staying with current primary woman tonight, who is whisking me into hospital tomorrow morning for a shoulder decompression, so it'll be tomorrow evening earliest.

How were you planning to fabricate the ends?

pistnbroke · Post by **pistnbroke** » Wed Oct 01, 2008 11:17 pm

Thanks charles but its the old exam question problem .....you did not answer the question !!!!!

I dont have a tank so I dont know the size .....I need length and diameter so I can make one up ......!!

and I only wanted a bashed up one to rob the connections and filler !

chris · Post by **chris** » Thu Oct 02, 2008 1:23 pm

did you get my pm as I sent a contact for parts that is local

40TPI · Post by **40TPI** » Thu Oct 02, 2008 5:43 pm

pistnbroke wrote: .....I need length and diameter so I can make one up ......!!

OA length 285mm
Length of middle section (OA less dished end caps) 220mm
Outside Diam 115 mm
Distance between "rear pegs" centres 161mm

My TC tank is a little bashed but a tape around the circumference came out at 362mm measured so the diam is within a mm or so. Hope that helps.

Peter

Post by **charlesp** » Thu Oct 02, 2008 6:21 pm

Well done, Ray..

I have just staggered down to the workshop, and got a different set of measurements, so I'll submit them here and where there's doubt we'll go with yours!

Overall I made it 11 inches, the cylindrical bit in the middle I made 9 1/2 inches, and the diameter 4 1/2 inches.

There is a radius at the join between cylinder and end cap. The end caps are dished, of course; you can get that with a bit of geometry I guess. At this sort of date the detail dimensions and tank end joint radii show a number of variations.

The little pegs are 6 inches apart, and as you will know they carry on internally until butted onto the opposite side of the tank interior.

The AD I looked at has a bayonet fitting cap; for export they changed to a screw fit after AD2930. I guess yours may have had plated steel tank straps, it's not quite clear when that changed from Jubilee clips.

An early AD would have had the gold, white and grey Seagull in a cartouche design of decal, with the relevant mixing instructions facing the operator.

Originally they were silver soldered, with the solder taking up the seam for a smooth surface.

pistnbroke · Post by **pistnbroke** » Fri Oct 03, 2008 12:10 am

Brilliant everyone and I will check my pm but nothing came up on the yahoo..

All the 5/16 BSF has gone and is now 8mm metric ..and the urethane mounted impeller bush is beautifull ....now for a new drive shaft ...

niander · Post by **niander** » Fri Oct 03, 2008 8:18 pm

I would make it longer...a long range tank!

pistnbroke · Post by **pistnbroke** » Fri Oct 03, 2008 9:45 pm

yes but how long is a long range tank ...

Must be authentic .....no urethane or metric stuff .....ha ha