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Re: IS2 Scratch Build
Posted: Mon Nov 06, 2017 8:19 am
by wibblywobbly
Jeez, not a lot of room in there for the barrel pivot, that must be a bit of a challenge? Loving the upper hull, that has come out very nicely!

Re: IS2 Scratch Build
Posted: Tue Nov 07, 2017 11:06 am
by AlwynTurner
More progress
Barrel pivot secured and removable for repair/adjustment. It was a bit tricky designing something secure enough for the heavy barrel, capable of allowing secure pivoting, and also removable.

Slapped a coat of paint on the upper hull as I got fed up of seeing it looking like frankensteins monster

Just the drivers hatch cover, the shackles, and the light to do on the upper hull
Alwyn

Re: IS2 Scratch Build
Posted: Tue Nov 07, 2017 7:17 pm
by wyvern
What a difference a coat of paint makes - looking great
Re: IS2 Scratch Build
Posted: Tue Nov 07, 2017 8:19 pm
by AlwynTurner
Re: IS2 Scratch Build
Posted: Tue Nov 07, 2017 9:02 pm
by Soeren
Nice
Question, wouldnt an elevation servo work as well?
Re: IS2 Scratch Build
Posted: Tue Nov 07, 2017 9:07 pm
by AlwynTurner
Hi Soeren, the barrel is very heavy and I think even a heavy duty servo would battle to lift it, plus I have a HL elevation motor in my spares box and I want to get the tank working with an RX18 before I put in an IBU2 pro, so I can test everything except the recoil using the RX18.
Alwyn

Re: IS2 Scratch Build
Posted: Wed Nov 08, 2017 9:17 am
by Soeren
I see, the levering of the stock elevation would be a better option then. Will you change this with the Ibu2 unit?
Re: IS2 Scratch Build
Posted: Wed Nov 08, 2017 10:02 am
by AlwynTurner
Hi Soeren, it depends on how well it works. If it doesn't function as well as I would like I wil probably experiment with an elevation servo once I have the IBU2.
Thanks for the interest
Alwyn

Re: IS2 Scratch Build
Posted: Wed Nov 08, 2017 2:56 pm
by AlwynTurner
Just to demonstrate what can be achieved with a couple of lines of openscad code, I designed and printed the shackles for the IS2
I love my printer (when it's working).
Alwyn
here's the code
module shackle () {
difference () {
union () {
rotate ([0,90,0]) translate ([-1.5,7,-3])cylinder(h = 6, r = 3, $fn=80);
rotate_extrude (angle=45, convexity = 9) translate ([5,1.5,1]) circle (r=1.5, $fn=80);
}
rotate ([0,90,0]) translate ([-1.5,7,-3.5])cylinder(h = 7, r = 1.25, $fn=80);
rotate ([0,0,0]) translate ([-1.5,3,-3]) cube ([ 3 ,10 ,10]);
}
}
shackle () ;
Re: IS2 Scratch Build
Posted: Wed Nov 08, 2017 7:17 pm
by AlwynTurner
And as the saying goes - It's a wrap!
just finished adding the shackles and the headlight, so the upper hull is now complete!
Obviously it will get a proper paint job later when all turret, mechanicals, and elecricals are all sorted.
Now on to the turret.
Alwyn
