Chieftain MK11 build

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Rob
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Re: Chieftain MK11 build

Post by Rob » Tue Apr 19, 2016 9:30 pm

Sorry it's taken so long to comment on these pics, I've been out in the workshop sorting through my tools. Anything to do with modelling ive thrown in the bin ! I've seen these engine grills in the flesh as it were . These pics do not do them justice. Just need a couple of black coveralled tankies sleeping on them, awaiting recovery vehicle.

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AndyR
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Re: Chieftain MK11 build

Post by AndyR » Tue Apr 19, 2016 10:12 pm

:lol: :lol: :lol:
Happy, Happy, Joy, Joy, Happy, Happy, Joy, Joy...........

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AndyR
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Re: Chieftain MK11 build

Post by AndyR » Tue Apr 19, 2016 10:16 pm

Hi possum,

Stupid question, but is this all progress made in the last few weeks, or were these photos taken a while back and your just getting round to posting?

Your speed and accuracy of your building is amazing - proper scratching building by hand ;)

Cheers
Andy
Happy, Happy, Joy, Joy, Happy, Happy, Joy, Joy...........

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possum
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Re: Chieftain MK11 build

Post by possum » Wed Apr 20, 2016 6:16 pm

Hi Andy,

Not a stupid question at all, & yes you are correct in thinking there's no way he's scratch building that fast.... I wish I could :)
Rob's been on to me to post for a year now, I didn't as the forum seemed to have moved to Facebook.

When we saw you were kick starting tank building on the forum again, we both thought we would give you some support. Then when you & Rob asked me to post my MK11 Chieftain build I had no more excuses.

So now you & everyone else are now getting catch up build photo's over the pass year... really started on the Chieftain build in 2015. At the same time I was finishing the upgrading my 1/6 RC M3A3 NZ Stuart with full interior which is another story. :geek:..."seemed a good idea at the time, but became at times a nightmare".

A few more posts pic's & we will be all up to date with my lack of progress.

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AndyR
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Re: Chieftain MK11 build

Post by AndyR » Wed Apr 20, 2016 7:10 pm

:)

Awesome work though fella, really inspiring stuff :)

So has the whole club moved on to FB??

I kinda like my build blog. Maybe that's what I'll do next time do a blog?

Cheers
Andy
Happy, Happy, Joy, Joy, Happy, Happy, Joy, Joy...........

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possum
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Re: Chieftain MK11 build

Post by possum » Wed Apr 20, 2016 8:56 pm

Another catch up post, this time about the front of the Chieftain.

Started off with dry fitting the cut ally deck.
https://lh3.googleusercontent.com/3ijoF ... 98-h673-no
With a lot of bashing & rolling of the aluminium I had the rough shape.
https://lh3.googleusercontent.com/hB50o ... 98-h673-no
Managed to pop rivet the ally onto to the hull & with the help of modeling milliput started sculpting the Chieftains nose.
https://lh3.googleusercontent.com/bcbtj ... 98-h673-no
https://lh3.googleusercontent.com/fwQoI ... 98-h673-no
Rough shape done & prime painted, also splash rail was added, lifting eyes were bolted on & milliput welds.
https://lh3.googleusercontent.com/GFWR9 ... 97-h673-no
https://lh3.googleusercontent.com/eA4D8 ... 97-h673-no
Hatch for the driver, & stage one of the front end are now a solid part of tank. Now onto the track guards.
https://lh3.googleusercontent.com/WIf6b ... 97-h673-no
https://lh3.googleusercontent.com/BiVls ... 79-h673-no
https://lh3.googleusercontent.com/_Cn3r ... 97-h673-no
Next front stowage bins, horn, & some more detailing.

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AndyR
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Re: Chieftain MK11 build

Post by AndyR » Wed Apr 20, 2016 9:26 pm

Awesome work..

The one thing about scratch building is that's its like some secret.

What I mean by that, is the end results masks all sorts of techniques that your unaware about, and unless you see build pictures illustrating the steps involved it just stays a big secret!!

So hats off to you sir, brilliant work.

Cheers
Andy
Happy, Happy, Joy, Joy, Happy, Happy, Joy, Joy...........

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possum
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Re: Chieftain MK11 build

Post by possum » Wed Apr 20, 2016 10:41 pm

No problem,

I spend most of my working day passing on gained workshop knowledge to my 3D design Foundation students. Anything to help them gain places in a top university, we have a few heading to Scotland & starting university this coming October :)

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possum
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Re: Chieftain MK11 build

Post by possum » Thu Apr 21, 2016 5:59 pm

Ok, we are still playing catch up on my build photo's at moment, When we are up to date, no more posts for months.

Couldn't stop myself building the horn, some light modeling fun. Then onto the four stowage bins located on front L/H & R/H track guards.
https://lh3.googleusercontent.com/WdkLh ... 62-h643-no
https://lh3.googleusercontent.com/I3QFY ... 62-h643-no
One down three to go
https://lh3.googleusercontent.com/MZ4Tj ... 44-h643-no
Made the decision early on in the build to have as many stowage bins as possible opening. I know Bob Griffin always like to see working bins on model tanks.
https://lh3.googleusercontent.com/ewJ_B ... 44-h643-no
https://lh3.googleusercontent.com/iZy3l ... 44-h643-no
Working catches made & cast by Steve Winstone.
https://lh3.googleusercontent.com/iZy3l ... 44-h643-no
A rest bite from making stowage bins. I made & then casted the Chieftain MK11 fire extinguishers. not a great photo ..Sorry
https://lh3.googleusercontent.com/cXbjk ... 44-h643-no
The front bins turned out to be harder to make than I first thought as they slope front to back & also left to right or right to left depending which side I was building.
The quirky Chieftain wedge shape bins really made my brain hurt.
https://lh3.googleusercontent.com/V3mGq ... 44-h643-no
https://lh3.googleusercontent.com/Td6r8 ... 62-h643-no
Fire extinguishers added. And blow over of primer grey.
https://lh3.googleusercontent.com/hAHKn ... 44-h643-no
Another three photo posts I think & you will be up to date with the current build progress. Then I'll go into hiding .

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AndyR
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Re: Chieftain MK11 build

Post by AndyR » Thu Apr 21, 2016 6:57 pm

Just brilliant, only thing I can say :)

Cheers
AndyR
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Rob
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Re: Chieftain MK11 build

Post by Rob » Thu Apr 21, 2016 9:27 pm

I'm hoping to see it in the flesh this weekend Andy, these pics really don't do it justice from what I have seen so far.

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possum
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Re: Chieftain MK11 build

Post by possum » Fri Apr 22, 2016 9:09 pm

Right, I really want to get these catch posts done & get back to building models.

Now that the lower hull & top deck were now nice & solid, I turn my attention to the road wheels & suspension. Bobs original 900 chieftain was missing a couple of road wheels, hubs & a few other suspension parts. I can use a metal work lathe but I'm not a expert, so machining up exact copies would have taken me a long time. Steve winstone helped me & machined me up two brilliant replicas. I took plaster casts of one the original road wheels tyre bought some liquid rubber & had a go at casting a new tyre.
https://lh3.googleusercontent.com/KQV22 ... 44-h643-no
Plaster is great for casting rubber as the really sticky rubber can't stick to the dusty surface of the plaster. The new ally wheel was sand blasted at work to help the rubber adhere to the wheel.
https://lh3.googleusercontent.com/HIWXi ... 44-h643-no
https://lh3.googleusercontent.com/rfaEQ ... 44-h643-no
1st go was a disaster I didn't get the mixing quite right or mix it long enough. But after watching YouTube again my second attempt was much better. I'm also lucky that we have a extracted plastics oven in the workshop at college. Helps cure the rubber & bond it to the wheels.
https://lh3.googleusercontent.com/XY0ai ... 62-h643-no
Before & after photo's, also some new hubs & hub caps all new & sandblasted.
https://lh3.googleusercontent.com/ojwhh ... 44-h643-no
Also stuck all the wheels though the lathe at work & change the angle of the tyres wall to look more like the Chieftain MK11 originals. Also removed much of the casting flashing.
https://lh3.googleusercontent.com/3O7aI ... 44-h643-no
https://lh3.googleusercontent.com/4UQHa ... 44-h643-no
Bob had made for his 900 brilliant machined 1/6 replica's of the Chieftains drive hub & sprockets, but when tried a dry fit they had become a very tight. The numbered sprockets didn't want to fit. I decided to machine the smallest amounts off the hubs.
https://lh3.googleusercontent.com/4D4Hy ... 44-h643-no
To my relief the sprockets fitted like a glove.
https://lh3.googleusercontent.com/Pertk ... 58-h643-no
https://lh3.googleusercontent.com/DSUHA ... 58-h643-no
Even managed to find m3 square nuts on EBay to bolt the sprockets onto the drive hubs.
One more post & we may well be up to date with the current state of the build. :roll:

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AndyR
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Re: Chieftain MK11 build

Post by AndyR » Sat Apr 23, 2016 7:23 am

Wow,brilliant stuff ;)

Its very authentic.

Cheers
Andy
Happy, Happy, Joy, Joy, Happy, Happy, Joy, Joy...........

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possum
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Re: Chieftain MK11 build

Post by possum » Sat Apr 23, 2016 7:35 pm

Continuing on with more catch up post to do with the wheels & suspension.

As I have mention in my past post I only inherited one 3D printed side of the front idler mountings, Originally draw up... I found out recently by Andy. I needed both sides to make some high temp silicon negative castings, then I can re-cast them in metal positive ... well that's the plan. Unfortunately I didn't know at the time that Andy still had the STL files for the Chieftains idler, so with help of the Games Development tutor at work we re-did the drawings for L/H & R/H. With new STL files loaded onto our 3D Makerbot they were 3D printed again. My Students had used up all the best grey & black printing material so I had to print them in red :roll:

https://www.youtube.com/watch?v=xis8ZdyKBaA
https://www.youtube.com/watch?v=aIxiyYxD1jE

They turned out great, they have had a clean up had some textured paint painted on & are now ready for casting. Haven't cast them yet, photos to follow.

Bobs Chieftain 900 suspension was fitted with hydrostrut system & this was what was fitted to one side of the tank I bought. My Chieftain MK11 needed the Horstman suspension units. While looking at some brilliant Armortex Centurion builds on their forum I noticed how similar their suspension units were. So after saving my pennies & with the very helpful Gill at Armortex I managed to buy 6 basic suspension units.
https://lh3.googleusercontent.com/3dAXw ... 44-h643-no
They have to be machined, adapted & detailed but look very close to the original Chieftain Horstman suspension units. These are still being worked on so photo's will be posted later.

OK.. that's it we are up to date on the MK11 Chieftain. So I'm back to building :D

Cheers Gary
Last edited by possum on Sun Apr 24, 2016 9:09 pm, edited 1 time in total.

Rob
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Re: Chieftain MK11 build

Post by Rob » Sat Apr 23, 2016 9:44 pm

I'm trying to work out what was the best part of my day . . . . Was it watching Shania Twain this evening, or was it going over to possums house to have a look at his Chieftain, m m m
It's truly a piece of art. I had my iPad with me, and meant to take a low angle shot to the rear ( no not Shania ) to see the colours, tarnish and finish to the exhaust outlets !
Take that pic Possum . Close up please.
Absolutely lovely.

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