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  #1  
Old 14-02-11, 10:28
Ben Ben is offline
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Lynn

I thought the earlier carriers had vented tanks and later ones used the pressured system? if i remember correctly FUC 03 has two diagrams, MK1 vented, MK2 pressured. not sure if it's as simple as that and it's not in front of me so i can't be 100% sure i'm even correct.

Ben
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Old 14-02-11, 12:07
shaun shaun is offline
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The Feb 1943 built MK 1 i have just stripped down had the remains of the vent tubes for the fuel tanks left in.
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  #3  
Old 14-02-11, 19:02
martyn martyn is offline
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richard you will rember where the fuel tanks sits after all by the time you have rivetted and painted and all the other jobs etc i will remind you they sit left and right of the rear axle and the speedo drive........... mk3 tanks are a bit longer i think as ive had to alter the front tank stop by trimming a bit out not bu much tho ?
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Old 15-02-11, 00:53
martyn martyn is offline
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just sum photos i found of mine for you to see think yours were bad mate
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  #5  
Old 15-02-11, 05:52
Lynn Eades Lynn Eades is offline
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Default Martyn / Ben

The MkIII carrier fuel tanks are the same Capacity (10 gal) as the other carriers, and I think dimensionally the same.
The 1941 (june) print of the Canadian MkI* (early?) only shows the cap with the valve in it (no breather pipes) The parts book said; Do not order TL12464, to order CTL 410 SA. There are two left hand and two right hand tanks listed.
I'm guessing this cap with the ball and valve in it is spark arrestor set up. The Australian carriers have a spark arrestor in them.
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  #6  
Old 15-02-11, 19:27
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Richard Farrant Richard Farrant is offline
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Quote:
Originally Posted by Lynn Eades View Post
I'm guessing this cap with the ball and valve in it is spark arrestor set up.
The ball valve stops petrol from escaping when traversing steep inclines, also to seal off in event of the Carrier overturning.
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  #7  
Old 15-02-11, 20:54
Lynn Eades Lynn Eades is offline
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Default Yes Richard

I too can state the obvious; The MAIN purpose is to allow air into the tank to stop it collapsing as the fuel is drawn off. BUT... when there is vapour pressure in the tank, does it lift the ball and close the valve? (the 3/4 steel ball weight, would hold back a bit of pressure)
Many carriers were built with the sealed cap, and vent tubes.
Were problems with these the reason for the "valved" caps/ non vented tank design?
Which design came first.
Was the vent pipe design o.k. for northern climates, but unsuitable for the desert theatre?
So many unanswered questions
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So many questions....
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