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No.80 Fuze Marks?

C

CultOfOne

Active Member
Hi All

I don't seam to be able to find this info anywhere. So can anyone answer the below questions? or point me in the right direction for information.

1. How many different marks were there of the "No.80 time and precision fuze"?
2. What were the differences between them?

Any help would be greatly appreciated.
Many thanks
 
I have a No 80 Mk VII, so there must be at least 7 different marks. I think the first ones were made of Aluminium, and the last ones were brass, other than that I cant help. Try doing a search on No 80 Mk I, up to VIII and see what turns up.
Cheers
Gary
 
To be pedantic, the number of Marks ran to XII. However, the Mark XII and two others. were cancelled designs.

TimG
 
In addition to the twelve marks I to XII there were two conversions I* and II* and a IIIA and IVA.

then of course there are the 80B (7 marks plus a IVA), 80/44. 80B/44, 80C/44 (the 'over 44s' can accounts for another 22 marks!).
 
The attached pdf (3 pages) may be helpful. The work for the document was done by the late Ian Hogg when he was at the Royal Military College of Science. There may be some errors. Marks are shown in Arabic rather than Roman numerals. List of Changes entries are shown where known. Introduction dates used in the LoC are often considerably later than when a fuze was in service.


Note the fuzes made from Vulcanised rubber.


View attachment FUZES (No80extractCiv).pdf
 
Thanks for the information guys, exactly what I was looking for, Bonnex that document is spot on many thanks.
 
CultOfOne said:
Thanks for the information guys, exactly what I was looking for, Bonnex that document is spot on many thanks.
Click to expand...

Glad it is of use. What it does not show are the fuzes that were derived from the No 80 design. There is quite a family tree of fuzes associated with the No 80, it goes something like :

80 was the basis for 81, 87, 180, 185, 195

81 was modified to produce 83, 84, 93, 185

83 used to produce 88, 90, 94, 183, 187
 
Bonnex said:
Glad it is of use. What it does not show are the fuzes that were derived from the No 80 design. There is quite a family tree of fuzes associated with the No 80, it goes something like :

80 was the basis for 81, 87, 180, 185, 195

81 was modified to produce 83, 84, 93, 185

83 used to produce 88, 90, 94, 183, 187
Click to expand...

NOT the 185s Norman; they were derivatives of the 'American' No. 85! Depotman
 
Bonnex said:
Glad it is of use. What it does not show are the fuzes that were derived from the No 80 design. There is quite a family tree of fuzes associated with the No 80, it goes something like :

80 was the basis for 81, 87, 180, 185, 195

81 was modified to produce 83, 84, 93, 185

83 used to produce 88, 90, 94, 183, 187
Click to expand...

A few more!

81 to 181

87 to 187

83 or 88 to 188

83 or 94 to 194M

83,88 or 80/44 to 197

As Norman correctly says, there are other /44s and also some with B, C, M or R suffixes. Depotman
 
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