New project Matilda 3/4
- AlwynTurner
- 2nd Lieutenant
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Re: New project Matilda 3/4
Mick according to Wiki only the first Matildas had return rollers and I think that by the time N Africa came along they had moved to track return rails, the Mark 3/4 certainly had them.
Alwyn
Alwyn
YOU'RE NEVER TOO OLD TO HAVE A HAPPY CHILDHOOD!
Saladin scratchbuild, Matilda scratchbuild, Churchill scratchbuild, Crusader scratchbuild, M10 Achiĺles scratchbuild, Universal Carrier scratchbuild
Saladin scratchbuild, Matilda scratchbuild, Churchill scratchbuild, Crusader scratchbuild, M10 Achiĺles scratchbuild, Universal Carrier scratchbuild
- Son of a gun-ner
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Re: New project Matilda 3/4
Cool, your detailing makes this Matilda sounds like my kind of gal
Mick - The grit in the underpants of life!
And always happy to spare the bytes
TOTM needs YOU support YOUR TOTM competition, I'm doing my part, are YOU?
And always happy to spare the bytes
TOTM needs YOU support YOUR TOTM competition, I'm doing my part, are YOU?
- AlwynTurner
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Re: New project Matilda 3/4
I've been reviewing my build and the gearboxes are a major weight issue. I've decided to try a set of plastic geared heng long boxes as a starter,
https://www.ebay.co.uk/itm/Heng-Long-Wa ... 2749.l2649
but probably substitute 3d printed side frames instead of the the metal ones, that should get the weight down enough for the suspension to work.
I'll post progress as the gearbox diet progresses.
Alwyn
ps if anyone has a set of plastic geared stug boxes in their spares box I would gladly purchase them
https://www.ebay.co.uk/itm/Heng-Long-Wa ... 2749.l2649
but probably substitute 3d printed side frames instead of the the metal ones, that should get the weight down enough for the suspension to work.
I'll post progress as the gearbox diet progresses.
Alwyn
ps if anyone has a set of plastic geared stug boxes in their spares box I would gladly purchase them
YOU'RE NEVER TOO OLD TO HAVE A HAPPY CHILDHOOD!
Saladin scratchbuild, Matilda scratchbuild, Churchill scratchbuild, Crusader scratchbuild, M10 Achiĺles scratchbuild, Universal Carrier scratchbuild
Saladin scratchbuild, Matilda scratchbuild, Churchill scratchbuild, Crusader scratchbuild, M10 Achiĺles scratchbuild, Universal Carrier scratchbuild
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- Warrant Officer 2nd Class
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Re: New project Matilda 3/4
I have some plastic gearboxes from a Sherman that came with one I bought, they are partly dismantled you can have them if they are any good
It’s your tank it’s what you make it
Re: New project Matilda 3/4
Hi Son of a gunners video set me thinking , i have the same problem the tank is nose heavy. Going to try another version of your trick for fixing the low front end. Some tube, rod and a spring to push the front up.
- AlwynTurner
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Re: New project Matilda 3/4
Now I've made progress on the Loyd Carrier gearbox it inspired me to design a lightweight bevel gearbox for the Matilda, so here it is:
First a drive shaft is removed from a plastic short shaft gearbox, and nylon bevel gears acquired
Then the frames are designed and printed
The two frames are assembled with the shaft
Insert bearing into drive shaft mounting
Add a 5mm shaft, spacers and second bevel gear, the second gear will need a grub screw fitting
Then we have a gearbox
Located in the chassis
Fit the drive sprocket
And as they say in Yorkshire, Jobs a good un
Still some work to do on the gearbox to add a second bearing on the drive shaft, put some mounting holes in the base, and wait for the delivery of a 12v 200rpm geared motor and coupling from Amazon, and then I can progress.
Alwyn
First a drive shaft is removed from a plastic short shaft gearbox, and nylon bevel gears acquired
Then the frames are designed and printed
The two frames are assembled with the shaft
Insert bearing into drive shaft mounting
Add a 5mm shaft, spacers and second bevel gear, the second gear will need a grub screw fitting
Then we have a gearbox
Located in the chassis
Fit the drive sprocket
And as they say in Yorkshire, Jobs a good un
Still some work to do on the gearbox to add a second bearing on the drive shaft, put some mounting holes in the base, and wait for the delivery of a 12v 200rpm geared motor and coupling from Amazon, and then I can progress.
Alwyn
YOU'RE NEVER TOO OLD TO HAVE A HAPPY CHILDHOOD!
Saladin scratchbuild, Matilda scratchbuild, Churchill scratchbuild, Crusader scratchbuild, M10 Achiĺles scratchbuild, Universal Carrier scratchbuild
Saladin scratchbuild, Matilda scratchbuild, Churchill scratchbuild, Crusader scratchbuild, M10 Achiĺles scratchbuild, Universal Carrier scratchbuild
- Raminator
- Warrant Officer 2nd Class
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Re: New project Matilda 3/4
Great to see you back in action, Alwyn! Good thinking with the perpendicular gearboxes, you'll be able to shift the centre of gravity away from the rear and avoid the saggy arse we all end up with otherwise!
- 43rdRecceReg
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Re: New project Matilda 3/4
Ditto to Ram's comment, Alwyn.
You really are- literally- at the cutting edge of things.
Perhaps I've missed it, but which plastic type are you using to print the gears: nylon, PLA, ABS? I'm guessing nylon would be the toughest, and most durable.
You really are- literally- at the cutting edge of things.
Perhaps I've missed it, but which plastic type are you using to print the gears: nylon, PLA, ABS? I'm guessing nylon would be the toughest, and most durable.
"Get your facts first, and then you can distort them as much as you please"- Mark Twain.
- AlwynTurner
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- Joined: Thu Oct 23, 2014 10:47 am
- Location: Chapel-en-le-Frith, Derbyshire
Re: New project Matilda 3/4
The gears are nylon and bought off the internet from a company called factoti but I can't find the web address I ordered from
That will be an unhappy event if I need to reorder them !
Alwyn
Update, I found the website
https://www.motionco.co.uk/pair-bevel-g ... p-147.html
That will be an unhappy event if I need to reorder them !
Alwyn
Update, I found the website
https://www.motionco.co.uk/pair-bevel-g ... p-147.html
YOU'RE NEVER TOO OLD TO HAVE A HAPPY CHILDHOOD!
Saladin scratchbuild, Matilda scratchbuild, Churchill scratchbuild, Crusader scratchbuild, M10 Achiĺles scratchbuild, Universal Carrier scratchbuild
Saladin scratchbuild, Matilda scratchbuild, Churchill scratchbuild, Crusader scratchbuild, M10 Achiĺles scratchbuild, Universal Carrier scratchbuild
Re: New project Matilda 3/4
Make sure that the gearboxes are bolted down so you can replace when they fail. (And they will fail at some point...).