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#1
11-04-17, 02:25
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Looked at in isolation the use of an aluminium alloy for a transmission housing seems odd but it seems at this time it was simply an industry standard for some British manufacturers and may particularly apply to low volume items. Some vehicles even featured alloy differential housings which appear very strange to modern eyes.
What a fascinating thread! David
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Hell no! I'm not that old! Last edited by motto (RIP); 11-04-17 at 02:30. 
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#2
11-04-17, 08:30
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On a visit to Colins, he pointed out to me that there was extensive use of aluminium in the Vickers light tanks. Likely the influence of their aviation interests.
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Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions....
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#3
11-04-17, 13:19
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Most Tank manufacturers of the time made extensive use of aluminium in Light tanks. The Panzer I was the same with mudguards, floor, wheels and tracks, as well as the engine and transmission made of aluminium alloys.
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1942 Chevrolet C60L WO48 - (Workshop) 1944 F15A 1965 Workshop Platform Trailer, Binned ARN: 101-803 1967 Trailer, 1/2 ton AUST No 5 ARN: 154-748 1990 Perentie 6x6 ERV, ARN: 51-981
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#4
11-04-17, 15:51
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Use of aluminum might be for weight, but it might also have been for lower melting point or ease of machining. Maybe a combination of "all of the above", I don't know the true answer.
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#5
11-04-17, 21:43
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The gearbox casing is quite likely to have been cast from Elektron, which was a magnesium alloy developed by a German company in the Inter War period. A company was formed in England in the early 1930's to produce Elektron castings. I know that the gun mantlet in the Vickers Mk6A was cast in this metal. It is light and stronger than cast iron. The gearbox casings on the Ferguson TE-20 tractor were cast in this metal and are part of the main spine of the machine, so on doubting the strength.
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Richard 1943 Bedford QLD lorry - 1941 BSA WM20 m/cycle - 1943 Daimler Scout Car Mk2 Member of MVT, IMPS, MVG of NSW, KVE and AMVCS KVE President & KVE News Editor
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#6
11-04-17, 23:34
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I don't think it would have been a weight issue, although my trans is probably 6-8 times heavier. Looking at mine now, I think I could have cut down the general thickness and still retained it's strength. I think it would have been for ease of manufacturing. If I was capable of casting, then I probably would have gone with ally as well. But I'm still happy with my progress. I had and estimate of $10k just for the wooden plug then it would have to be cast and machined. So It would have been upwards of possibly $20k and still no guarantees.
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#7
12-04-17, 04:09
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Quote:
 Understatement? 
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