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GVVT FVA854
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Author:  Stephen Allcroft [ Thu Oct 17, 2013 12:41 pm ]
Post subject:  GVVT FVA854

Overdrive Valiant

This 1950 Albion CX39 Duple has an overdrive unit, worked by a second gearlever. It was new to Isaac Hutchison and never served with Western. It has been with the Albion Vehicle Preservation Trust since the 1960s.

Note the Albion Oil Engine Badge at the base of the radiator, this engine was a mighty 9.9 litres, the optional petrol unit was even bigger at 10.45 litre, producing 145bhp.

Attachments:
File comment: Albion CX39N Duple A C33F new to Hutchison Overtown 1950.
Overdrive Valiant.jpg
Overdrive Valiant.jpg [ 689.49 KiB | Viewed 2565 times ]

Author:  mancunian [ Sun Oct 20, 2013 9:43 pm ]
Post subject:  Re: GVVT FVA854

I once had a ride on this. The overdrive unit appears to be constant mesh like the main gearbox, with a neutral position between low and high ratios, and a requirement to double declutch. This makes me wonder if there is anything to stop it from being used on the intermediate gears.

Author:  Stephen Allcroft [ Tue Oct 22, 2013 2:27 pm ]
Post subject:  Re: GVVT FVA854

Well Mancunian, I don't know, but If I get the chance I chall ask...

Author:  anymore5678 [ Thu Jun 23, 2016 3:37 am ]
Post subject:  Re: GVVT FVA854

This makes me wonder if there is anything to stop it from being used on the intermediate gears.

goldenslot ผ่านมือถือ

Author:  mancunian [ Sat May 27, 2017 12:32 am ]
Post subject:  Re: GVVT FVA854

Strange, there seems to be an echo in here. Anyway, I've now had an answer. Roger Burdett has purchased a pre-war Albion coach with the same arrangement, and says the overdrive can be used in any gear. However, it occurs to me that any attempt to use this for split changes must avoid having both levers in neutral at the same time, which would result in being "lost in space", with no means of synchronising the intermediate drive shaft to complete the change.

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