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Re: IS2 Scratch Build
Posted: Tue Aug 15, 2017 2:36 pm
by wibblywobbly
Its starting to take shape now, excuse the pun, and look like a beast of a tank.

Re: IS2 Scratch Build
Posted: Tue Aug 15, 2017 7:00 pm
by tomhugill
Nice to see the earlier stepped nose varient! It looks fantastic, managing to capture all those cast shapes is hugely impressive!
Re: IS2 Scratch Build
Posted: Tue Aug 15, 2017 7:14 pm
by AlwynTurner
Thanks guys, the angles were a real pain made a lot worse by the blueprints not showing the area clearly due to the turret. It will look a whole lot better when it gets it's milliput cast texture coating, but that will have to wait until I've done some detail work around the driver hatch area.
Alwyn

Re: IS2 Scratch Build
Posted: Wed Aug 16, 2017 2:48 pm
by AlwynTurner
Time to get going with the milliput!

and as I had some spare thought I would have a bash at the steel cut marks on the back
Lots more to do
Alwyn

Re: IS2 Scratch Build
Posted: Thu Aug 17, 2017 12:05 am
by c.rainford73
Alwyn superb work as always

The rough and crude castings and welds on these Russian tanks has really grown on me. I know you have much to do but along the way it's really coming into shape
Enjoying your progress
Carl
Re: IS2 Scratch Build
Posted: Thu Aug 17, 2017 10:51 am
by Raminator
It's almost a shame to cover that expert-level styrene fabrication with putty, Alwyn! I'm highly impressed with how you managed to capture the shape.
Re: IS2 Scratch Build
Posted: Thu Aug 17, 2017 12:55 pm
by tomhugill
The casting and weld marks looks spot on! Love it Alwyn
Re: IS2 Scratch Build
Posted: Thu Aug 17, 2017 1:26 pm
by AlwynTurner
Re: IS2 Scratch Build
Posted: Fri Aug 18, 2017 8:47 am
by AlwynTurner
Thanks Mick, I've covered this in threads about the bearing issue, the use of small vertically mounted bearings only covers the lateral thrust, whereas with my heavy turret I need a bearing that handles the vertical weight load as well as the lateral thrust.
viewtopic.php?f=195&t=23707&start=20
The 3d printed design to resolve this will be revealed shortly. Of course whether I can make it work is a separate issue......
Thanks for the interest.
Alwyn

Re: IS2 Scratch Build
Posted: Fri Aug 18, 2017 9:05 am
by AlwynTurner
First attempt at the bearing - the tolerances and exact sizing aren't correct but you can see how it's planned to work
The various components including upper and lower races, ball cage, and bearing balls:

Ball in ball cage and lower race

and you can just see the ball in the closed up bearing

I need to reprint the components as various thing weren't quite right on the first print but the design looks workable, it will just need lots of cleanup, especially the ball cage which due to the thinness of the part didn't print the ball holes accurately.
But it's a start.
Alwyn
