Re: Building a Mid-Production Normandy Tiger 1
Posted: Fri Jun 07, 2013 2:55 pm
Thanks Sov!
Rear jack mounts
For some reason this was one part of the build that I wasn't looking forward to - but it proved to be very satisfying.
The HL jack is simply attached to the rear hull using two plastic pegs - so there are no visible mounts at all. It's also hollow underneath. The Tamiya jack, not surprisingly, is superior with good detail on both sides, but the brackets are simply 'U'-shaped pieces of metal which screw into the hull - hardly much better.
On the real Tiger the way in which the jack was held in place was actually a little more complicated than I first thought. Something I had overlooked was the fact that the weight of the jack actually rests on two fixed brackets beneath it. The function of the more prominent three-part hinged brackets was to clamp the tool against the back of the tank - not to bear its weight. These can both be seen clearly in the shot of the Bovington Tiger above. This arrangement changed very slightly when the 15-ton jack fitted to mid-production Tigers was up-graded for the steel-wheeled variant to the 20-ton one (the lower brackets moved slightly).
So how did I make the jack mounts? Actually it's SovereignZuul http://www.rctankwarfare.co.uk/forums/v ... 22&t=10204 I have to thank for a really useful tip when he was doing his jack mounts: using square plastic tube. The best size is 1/8" (otherwise described as 0.125" or 3.2mm x 3.2mm). Mine is made by Evergreen.
This has several advantages when it comes to building many of the mounts and brackets for tools on the Tiger 1. The original parts were often made from cast or bent thin metal - again see the Bovington Tiger pictured above - so that parts of them are quite three-dimensional.
Of course, because the tubing is made of plastic it is also much easier to carve or shape than metal. Also the square cross-section means that even when you cut it down to the depth of one side it has a rigidity that a simple flat strip of plastic card would never have.
Back to the brackets...
First I worked out where they should be attached to the rear plate and cut out a strip of zimmerit before adding cut-down plastic tubing to the hull. Here you can see the advantages of this square tubing - by leaving part of the sides intact I created the hinge mounts for the next section. It was only after I then presented the actual (Tamiya) jack that I realized that I had made a schoolboy error by lining up the right edge of the tool to the side of the rear plate rather than the rear corner of the side plate. So I had to shift them a little...
Next I shaped the lower and rear parts of the three-part brackets from the same square tubing.
Like the real ones they have to be different shapes and lengths because they fit around different parts of the actual jack. Unlike Sov's build I didn't plan to make these working brackets, but in order to look right it helps to make them as if they were going to be moveable.
The next stage was to wrap these pieces around the Tamiya jack itself, ensuring they lined up with the pieces I had already attached to the hull. For added strength I also cheated slightly by adding metal pegs to the rear of the lower jack brackets and drilling holes into the rear plate to take them.
More to follow...
Rear jack mounts
For some reason this was one part of the build that I wasn't looking forward to - but it proved to be very satisfying.
The HL jack is simply attached to the rear hull using two plastic pegs - so there are no visible mounts at all. It's also hollow underneath. The Tamiya jack, not surprisingly, is superior with good detail on both sides, but the brackets are simply 'U'-shaped pieces of metal which screw into the hull - hardly much better.
On the real Tiger the way in which the jack was held in place was actually a little more complicated than I first thought. Something I had overlooked was the fact that the weight of the jack actually rests on two fixed brackets beneath it. The function of the more prominent three-part hinged brackets was to clamp the tool against the back of the tank - not to bear its weight. These can both be seen clearly in the shot of the Bovington Tiger above. This arrangement changed very slightly when the 15-ton jack fitted to mid-production Tigers was up-graded for the steel-wheeled variant to the 20-ton one (the lower brackets moved slightly).
So how did I make the jack mounts? Actually it's SovereignZuul http://www.rctankwarfare.co.uk/forums/v ... 22&t=10204 I have to thank for a really useful tip when he was doing his jack mounts: using square plastic tube. The best size is 1/8" (otherwise described as 0.125" or 3.2mm x 3.2mm). Mine is made by Evergreen.
This has several advantages when it comes to building many of the mounts and brackets for tools on the Tiger 1. The original parts were often made from cast or bent thin metal - again see the Bovington Tiger pictured above - so that parts of them are quite three-dimensional.
Of course, because the tubing is made of plastic it is also much easier to carve or shape than metal. Also the square cross-section means that even when you cut it down to the depth of one side it has a rigidity that a simple flat strip of plastic card would never have.
Back to the brackets...
First I worked out where they should be attached to the rear plate and cut out a strip of zimmerit before adding cut-down plastic tubing to the hull. Here you can see the advantages of this square tubing - by leaving part of the sides intact I created the hinge mounts for the next section. It was only after I then presented the actual (Tamiya) jack that I realized that I had made a schoolboy error by lining up the right edge of the tool to the side of the rear plate rather than the rear corner of the side plate. So I had to shift them a little...
Next I shaped the lower and rear parts of the three-part brackets from the same square tubing.
Like the real ones they have to be different shapes and lengths because they fit around different parts of the actual jack. Unlike Sov's build I didn't plan to make these working brackets, but in order to look right it helps to make them as if they were going to be moveable.
The next stage was to wrap these pieces around the Tamiya jack itself, ensuring they lined up with the pieces I had already attached to the hull. For added strength I also cheated slightly by adding metal pegs to the rear of the lower jack brackets and drilling holes into the rear plate to take them.
More to follow...