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Chieftain Mk V scratch build
Posted: Wed Apr 11, 2018 9:50 am
by midlife306
Awesome work Alwyn

Did you buy a length of spring & cut to the desired length?
Edit: oh, carbon steel or stainless?
Cheers
Wayne
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Re: Chieftain Mk V scratch build
Posted: Wed Apr 11, 2018 9:54 am
by Raminator
Beautiful work on those bogies, Alwyn. I love prototypical suspension on the models, it feels like the lazy way out when you see all these models with simple clock springs.
With regards to the off-scale return rollers (which I must admit I did not notice until you pointed them out), could you trim a few millimetres off the track centreguides?
Re: Chieftain Mk V scratch build
Posted: Wed Apr 11, 2018 10:30 am
by AlwynTurner
Hi folks, thanks for the good words, I thought about trimming the track centre guides but I don't want the tracks jumping off, I may reconsider later and print smaller return rollers though, I can always do that as an upgrade.
Wayne I bought a 400mm length of carbon steel spring and cut to 40mm lengths. I may need to cut slightly longer lengths once the tank is up to full weight but again I can do that later as the suspension is bolted together.
Otherwise it's all now down to printing the rest of the wheels/rollers, assembling them, and getting the gearboxes.
Alwyn

Re: Chieftain Mk V scratch build
Posted: Wed Apr 11, 2018 11:05 am
by midlife306
Thanks Alwyn, I’ll order a length now

Cheers
Wayne
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Re: Chieftain Mk V scratch build
Posted: Wed Apr 11, 2018 1:42 pm
by tomhugill
You really are a wizard Alwyn!
Re: Chieftain Mk V scratch build
Posted: Wed Apr 11, 2018 2:27 pm
by AlwynTurner
Thanks Tom, unfortunately I can't lay claim to any magical powers, it's all down to blood, sweat, and anglo-saxon swear words!
I had to modify the code for the spring mountings for the suspension
The springs were a different diameter to the original plan.
Alwyn

Re: Chieftain Mk V scratch build
Posted: Wed Apr 11, 2018 2:47 pm
by AlwynTurner
Re: Chieftain Mk V scratch build
Posted: Wed Apr 11, 2018 9:19 pm
by midlife306
Hi Alwyn, slowly but surely I'm picking things up as I go along, I actually managed to work out which line controlled the bore on the spring seat & reduced the rad by a mill, why... because I could, thanks for the masterclass
Cheers
Wayne
Re: Chieftain Mk V scratch build
Posted: Thu Apr 12, 2018 7:03 am
by AlwynTurner
That's great Wayne, getting forum members familiar with openscad is one of the reasons I post the code. The best way of learning is to open the code in Openscad and alter it, and see what effect the changes have.
Havre fun
Alwyn

Re: Chieftain Mk V scratch build
Posted: Sat Apr 14, 2018 11:04 pm
by Will01Capri
Wow that really is amazing. Great work. Wow. I love it