Churchill Prototype

Phil Woollard · Post by **Phil Woollard** » Sun Apr 03, 2022 2:33 pm

I like it!

florian rudolf · Post by **florian rudolf** » Sun Apr 03, 2022 3:56 pm

Looking realy good

Robert E Morey · Post by **Robert E Morey** » Mon Apr 04, 2022 12:38 am

Nice work Armortek! Looking really good. The tracks look great. Churchy will be an interesting beast!

Post by **Armortek** » Wed Apr 06, 2022 10:12 pm

Testing the springs on the Churchill.

Although we calculate the theoretical spring rate and compression values, there is nothing like a real test to validate things.

: A_IMG_2038 (640 x 480).JPG (224.22 KiB) Viewed 4115 times

Adrian Harris · Post by **Adrian Harris** » Wed Apr 06, 2022 10:53 pm

And is that before or after they'd pinged all over the factory ?

Adrian.

Steve Stuart · Post by **Steve Stuart** » Wed Apr 06, 2022 11:50 pm

The prototype is now called Zebedee!
Steve

Stephen White · Post by **Stephen White** » Thu Apr 07, 2022 8:12 am

Showing your age Steve. Vorsprung durch Sprungen.

Post by **Armortek** » Tue Apr 12, 2022 3:55 pm

Railway wheelset anyone ?

This is one of 22 wheelsets on the Churchill

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: A_C2 (640 x 480).jpg (190.4 KiB) Viewed 3859 times

And some wheelsets from "Railway Wheelset & Brake Ltd" for comparison. Can see where the idea for the Churchill roadwheels came from ...

: Railway wheelset.jpg (82.81 KiB) Viewed 3858 times

Jerry Carducci · Post by **Jerry Carducci** » Tue Apr 12, 2022 4:25 pm

There's nothing like the gleam of newly machined parts in the morning, either of one's own making or others'.

In some was seeing someone else's is better as I don't have to clean up all the nasty turnings and chips...invariably getting
something stuck in a finger...

Jerry

Post by **Armortek** » Wed Apr 13, 2022 9:23 am

A bit more on the bogies for the Churchill.

On the real thing there are 2 types of bogies - Bogie Type A is on stations 1,2 and 11 on each side. Bogie Type B is on stations 3,4,5,6,7,8,9 and 10. The main difference between them is that the the suspension arm for Bogie Type A has additional flanges to increase its strength in order to cope with rough terrain.

The image below shows this, although it is a little hard to make out the strengthening flanges on the suspension arms. In the photograph the differences between the bogies is most obvious between stations 2 and 3.

Note that when you look at some ww2 and post war images, the bogies were occasionally mounted in incorrect positions - it was a case of needs must as mechanics made do with what they had.

.

Below is a image of the two types of Churchill bogies on our kit- the suspension arm is cast. On the Left is Bogie Type A and on the Right Is Bogie Type B