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 Post subject: GVVT FVA854
PostPosted: Thu Oct 17, 2013 12:41 pm 
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Joined: Tue Jan 24, 2012 4:44 pm
Posts: 167
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.


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File comment: Albion CX39N Duple A C33F new to Hutchison Overtown 1950.
Overdrive Valiant.jpg
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 Post subject: Re: GVVT FVA854
PostPosted: Sun Oct 20, 2013 9:43 pm 
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Joined: Sat Jun 02, 2012 10:31 pm
Posts: 16
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.


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 Post subject: Re: GVVT FVA854
PostPosted: Tue Oct 22, 2013 2:27 pm 
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Joined: Tue Jan 24, 2012 4:44 pm
Posts: 167
Well Mancunian, I don't know, but If I get the chance I chall ask...


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 Post subject: Re: GVVT FVA854
PostPosted: Thu Jun 23, 2016 3:37 am 
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This makes me wonder if there is anything to stop it from being used on the intermediate gears.

goldenslot ผ่านมือถือ


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 Post subject: Re: GVVT FVA854
PostPosted: Sat May 27, 2017 12:32 am 
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Joined: Sat Jun 02, 2012 10:31 pm
Posts: 16
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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