Well then, really off topic...

[conehammer]

Here's one of many reasons why I don't buy many Broomhandles or Lugers these days:



1/10 scale Russian SU-152



1/10 scale Tiger II( King Tiger) and 1/10 scale PzKw I

The Tiger II is fully operational. It weighs 95 pounds.
Three forward speeds + reverse fully selectable by radio.
6,5ccm engine with self starter. May run as long as 1 hour
once fully fueled. steering is accomplished by braking either side of a differential gear; has in line clutch to disengage engine from transmission.

No they don't shoot and I actively discourage it. It is just stupid. Some of the smaller scales ( in which I am also active) use elaborate ir combat systems to simulate damage.

I've been building and collecting 1/10 scale armor for over 30 years. Generally they are made to a much higher standard than some other scale military vehicles; especially the "action figure"( Doll ) scale 1/6. 1/10 sale has been more the 'model
engineering" scale.

This one is intended to be electric powered but I usually power mine with modified glow ignition engines.

See my website http://tanks.linite.com/for other information.

Jerry

[lfid]

Jerry,

very cool info !!!

yet another hobby thing to add to my "when retired" list of fun things
I like that this involves real metal and soldering , etc

but seems to me that blank firing guns or simulated firing with led / smoke and sounds would not be unreasonable

seems like circa 1960 I saw a popular mechanics article on scale warships that fired .22 live ammo and there was some group that had serious simulations with loser sinking

anyway thanks for the bump that this stuff exists

Bill

[FNorm]

Really amazing!

FN

[alvin]

The lathe to make the parts must be very small as well?

No welding anywhere?

[conehammer]

alvin The lathe to make the parts must be very small as well?

No, normal machines. The models are not that small.
I have 4 lathes, 2 mills and a fairly complete small
capacity (up to 30# aluminum ) foundry.

Jerry

[alvin]

If nemo had not passed away, I bet he would love this. Is everything steel?

[conehammer]

Is everything steel?

The majority of the hull components are aluminum. Various components for the suspensions/ running gear and transmissions are steel; some carbon, some stainless yet others hardened steel. Significant brass is used in some outer accessories.

To give you an idea the power that these 'toys' will generate the
final drive shaft to the sprockets can be as large as .375" ( 3/8") steel and if you aren't diligent you can easily bend them. In first gear some of my models if they can get traction, can pull a disproportionate weight many times their own.

I must add that I did not build the SU-152; it was built by a fellow in the Ukraine. There were 2 made. There's a video of a local event there and they had fit a .410 blank gun the the example they ran. See it here:
http://www.youtube.com/watch?v=O9L3I...8%3Btopicseen&

(They didn't have the main fighting compartment fastened down and watch it jump!!)
I have electrically driven ( 6 shot) 8mm theatrical blank guns for some of mine but I do not fit them. Our society , especially here in the People's Republic of California is too much against that sort of thing to risk getting in dutch over it.

Jerry

[EricW]

That's pretty neat! Having this 1/4 scale one to tow the trash bins to the street would make trash day a welcome event ... http://www.youtube.com/watch?v=QQV9H...eature=related

http://www.youtube.com/watch?v=yRXOGoJgS0Q&feature=fvw

[rolandtg]

Wow, those are incredible!
I've seen the plastic RC tanks like that before but never hand built ones like yours.
Really beautiful work!

[Ron Wood]

I constantly marvel at the craftsmanship of some scale modelers. I am in complete awe with respect to the engineering, metalworking ability and attention to detail in these pieces. You have my complete admiration. Thank you for some very enjoyable videos that showcase such skill.

[conehammer]

Here is an update covering what I've been up to.

A video of my first scratch built gearbox test under power. This is a braked differential type, planetary differential as the core.
The power is via centrifugal clutch. The engine is an O.S. Engines FS-20;.20 cid / 3,5ccm 4 cycle.
The clutch was machined from D2 type tool steel. The gearbox housing is made from .250" 7075 aluminum
plate; the ball bearings used and gears are all stainless steel. The remainder of the bearings are oilite type.The cover is
.250" acrylic fitted with a screw cap to add oil. The gearbox presently has better than .500" oil bath; I am using
Sta-Lube air tool oil. I will reduce the oil level after tests are complete.

As you can see this was truly an example of a "Jerry rigged" test setup; I wanted to test the gearbox but did not yet
want to commit to using this starter assembly; so no permanent mount was made.

http://www.youtube.com/watch?v=5_YHZLUItVI

At the end of the video you'll hear me exclaim as I burnt the middle finger of my left hand just after disconnecting the fuel line. The
exhaust stacks on model 4 cycle engines get quite hot!

All in all a very good test, even the clutch disengages when I want it to... I will take a break for a while then move on to the installation
into a model.

Since the video was made I've finalized the starter and most of the shift interface. I will begin on getting it mounted in the target model: a 1:10 Hetzer.

For the complete development story please refer to my website, http://tanks.linite.com/ under the gearbox page. At the bottom of that page.

Jerry

[MikeP]

Can I come over to your house to play?