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#1
28-04-12, 12:31
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I have 2 complete plotting boards..no idea what they fit..so they are sitting in the basement..and are for sale..yo big to take to the shows.
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#2
28-04-12, 15:00
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Complete
Quote:
__________________
RHC Why is it that when you have the $$, you don't have the time, and when you have the time you don't have the $$?
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#3
28-04-12, 22:14
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Dean,
I'm looking for one like this. If that's what yours is like, what do you what for one? There's a bracket in the C8's box to hold it.
__________________
1940 Cab 11 C8 Wireless with 1A2 box & 11 set 1940 Cab 11 C8 cab and chassis 1940 Cab 11 C15 with 2A1 & Motley mount & Lewis gun 1940 Cab 11 F15A w/ Chev rear ends 1941 Cab 12 F15A 1942-44 Cab 13 F15A x 5 1942 cab 13 F15A with 2B1 box 1943 cab 13 F15A with 2H1 box 1943 Cab 13 C8A HUP 1944 Cab 13 C15A with 2C1 box 1943 Cletrac M2 High Speed Tractor MkII Bren gun carrier chassis x 2
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#4
28-04-12, 22:26
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I have no stands for mine..never knew they used them.
If anyone wnats a photo of them...email me at northman@rogers.com Dean
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#5
07-05-12, 21:07
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Arty Boards in a Gun Tractor
Hi Guys:
I'm having trouble figuring out the circumstances where an arty board would be carried in a gun tractor. At the risk of being a little pedantic, the Gun Detachment Commander is busy enough commanding his gun... I don't think he would also be expected to do the TARA's (Technical Assistant, Royal Artillery- now shortened to Arty Tech or just Tech) job of plotting the gun position, the observer (Observation Party or OP) and the target and then doing the mathematics involved in spinning a plotting device. There are three main parts to the indirect fire problem- the target, the observer and the guns. These form a triangle on the ground that has to be solved in order for the guns to hit something they cannot see. The guns are surveyed in and the OP sends his location as an accurate map spot to the command post (CP) at the guns. They now have two parts of the triangle solved. The OP can then send the target information as a grid reference or as a bearing and distance from his location. In either case you now have three parts of the triangle and can solve any other part with a bit of math. All this is done on the plotting boards in the CP. The guns don't actually do any plotting themselves. Added to the CP's work are the calculations for meteorology, curvature of the earth, spin of the earth, weight of the projectiles and any obstacles like mountains between the guns and the target. The description of the target will also influence the ammunition selected if not specified by the OP. These all result in a series of orders to the guns which include the ammunition, the charge of powder, the bearing to lay on, the elevation or range (depending upon the type of sights fitted to the gun) to hit the target and a method to control the fire ("fire for effect", "at my command", etc, etc). Occasionally single guns or pairs of guns will be sent out to conduct independent harrassing fire (HF) or sniping gun (SG) tasks. They would be issued either a gun data sheet with the gun data (bearings and elevations, etc) or an officer and tech would go with them to become a mini-CP. All of this is also why gun tractors don't normally have radios in them. Guns going on HF or SG tasks will be issued a manpack radio from 'Pronto' (the Bty Sigs NCO) for the duration of the task. SP guns are generally fitted for radios as they are often deployed in more dispersed gun positions and the radios are used to pass orders. Cheers and Ubique! Mike  
__________________
Mike Calnan Ubique! ("Everywhere", the sole Battle Honour of the Royal Regiment of Canadian Artillery) www.calnan.com/swords
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