1/6 t34 project, here we go

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Postby minimivic » Thu Dec 27, 2018 7:55 pm

After a while of looking for a 1/6 tank at a reasonable price we finally settled on a Mark 1 Tanks 1/6 t34 76 stz that was advertised on here and other sites. I struck a deal and the Christmas pressie was sorted
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The inside:
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When running something didn't seem right so with investigation I noticed the tracks were catching on the rear drive wheels, the rollers on the wheels were fine but the tracks caught on the top points
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So after some sanding I settled on this
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Which was massive improvement after the track tension was reduced.
Next was the suspension the 5mm bolts were mainly bent and out of align
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SO replaced with 6mm and some silicone tube damping
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This made the tank a lot better again, it now runs without the tracks trying to jump off the wheels.
Next on the list is to fix the alignment of the road wheels but someone has welded the swing arm levers to the swing arms but not just a small tack its a full on weld so will need a lot of grinding to sort that, so I may at the same time make a CNC chassis in 6mm steel plate as I have a workshop capable of such stuff.
Hence the "Here we go" bit.
I can see so many ways to improve this from wiring to sounds etc, but at least its running a lot better already.

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Postby Aljones34 » Thu Dec 27, 2018 8:21 pm

Looks good and enjoy the hobby.

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Postby midlife306 » Thu Dec 27, 2018 8:42 pm

Thanks for sharing, 6th scale are big buggers for sure!
Funny I’ve been deliberating on suspension bolt sizes for a few weeks now as I’ll need to finally make my mind up so I can print the parts with the correct hole sizes.
I decided on 6mm bolts for the return rollers & they are printing now, I’m just using brass tube for bearings.
I’d be interested to see what motors & gearboxes yours uses as I’ll have to decide the drive for mine as well soon.
Good luck!
Cheers
Wayne


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Postby Ad Lav » Thu Dec 27, 2018 8:49 pm

Nicely done! Glen is a top guy too.
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Postby c.rainford73 » Thu Dec 27, 2018 10:22 pm

Fantastic tank enjoy it and keep us posted on your progress. It's a real beauty glad its found a good home :clap:
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Postby jackalope » Fri Dec 28, 2018 12:24 am

WOW! I'd love to get a 1/6 scale tank.
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Postby Wardog » Fri Dec 28, 2018 1:34 am

A gentleman on tv said,the best Rc is a tank.out in all weathers, nothing stops a tank,doesn't stop you having fun.
Great tank and the boy looks happy! :)

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Postby Saracen » Sat Dec 29, 2018 2:50 pm

> but someone has welded the swing arm levers to the swing arms but not just a small tack its a full on weld

As far as I know, that's how they're shipped from Russia. All the ones I have seen are made this way.

Looks like yours is 24V and presumably chain drive ?

I have an ISU152 which is still 12V and has the dreadful original gearbox in it, so I'd be most grateful to see some pics of your drive gear.

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Postby minimivic » Sat Dec 29, 2018 4:24 pm

The drive system with 2 motors
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The motors
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The welding, that wont come off fast
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Wiring is a bit unbelievable with the smoker and the light still having power with the power switch turned off, also the light and smoker are turned on using a servo to activate a microswitch. Very odd.Servo can be seen in this picture.
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Battery held in place with long bolts to stop movement, this is changing quickly.
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The brains(TCU) with speaker wiring solder to PCB, nice.
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My planned changes are:
Battery tray with strap to hold them in place
Relocate TCU
Make space for better sound system.
Sort wiring and add multi connectors to the turret.
Turret turn is fine but elevation is rubbish
Recoil needs sorting.
More will come

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Postby Saracen » Sat Dec 29, 2018 4:46 pm

Thanks for the pics.

These are the before and after pictures from a King Tiger. I bought a small Bosch angle grinder specifically to get these parts apart.

DSCN4090.jpg


DSCN4124.jpg


DSCN4130.jpg


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Postby midlife306 » Sat Dec 29, 2018 5:10 pm

Adrian, that’s not welding, it’s bird sh/t...
When you spend 6th scale money you’d expect better than that tbh.
Cheers
Wayne


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Postby minimivic » Sat Dec 29, 2018 5:11 pm

Saracen,
Why did you grind your arms off?
I may do mine now I’m this far apart to correct the wheel alignment.

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Postby Saracen » Sat Dec 29, 2018 7:33 pm

The fibreglass had deteriorated and couldn't support the weight of the tank, so all the wheels were splayed out.

This was supposed to be the first step to getting it into a metal lower hull, but then I found so many problems with the wheels, the suspension arms etc, that I just shelved it until I could have a fresh run at it.

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Postby minimivic » Sat Dec 29, 2018 7:38 pm

There is a lot of hull flex, mainly at the front so I will add braces to help.

Full steel chassis maybe later.

Do you know how to get the road wheels off?

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Postby rolling-thunder » Sat Dec 29, 2018 8:13 pm

May be a metal tub if you don't go for a full metal chassis?
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Postby midlife306 » Sat Dec 29, 2018 8:46 pm

Thanks for the pics, the motors were surprisingly easy to find!
https://www.ebay.co.uk/i/151945828608?c ... faffd11d87
Cheers
Wayne


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Postby Saracen » Mon Dec 31, 2018 10:54 pm

> Do you know how to get the road wheels off?

On the ISU-152 they were just epoxied to the bearings. I heated them with a hot air gun to destroy the epoxy and pulled them off.

DSCF4536a.jpg


DSCF4533a.jpg


The bearings are odd paired things. I suppose a pair of new bearings with a spacer would work just the same.

DSCF4541a.jpg


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Postby minimivic » Tue Jan 01, 2019 8:32 pm

Batteries are now relocated and secured with a strap. so much happier with this.
Also wiring has been improved but needs some other changes.
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I can now get the batteries out through the turret if needed.
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So fist outing to Grandparents house with a large garden, all going great and sounding fine until
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Chain to the right rear came off due to the rear sprocket coming loose, and jammed into the chassis so had to wheelbarrow back and attempt to fix but couldn't with limited tools.

Oh well tomorrows another day.

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Postby midlife306 » Tue Jan 01, 2019 10:02 pm

Unlucky mate, the larger sprocket looks to be at an odd angle to the shaft.
It’ll mend
Cheers
Wayne


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Postby minimivic » Wed Jan 02, 2019 7:33 pm

Motor to rear axle drive sprocket is about 5mm out of alignment on the side that came off and 3mm out on the other side, not sure wether to just fix the lot now by doing the steel chassis or keep plastering it until it breaks properly.

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