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Armor/AFV
For all military ground-force modelling subjects.
My first HEMTT - the Italeri LHS
165thspc
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Posted: Monday, November 07, 2016 - 04:27 AM UTC
Gino, to your knowledge, does anyone offer that Red Dot Corporation add-on A/C system in 1/35th?

M4A1Sherman
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Posted: Saturday, November 05, 2016 - 10:11 PM UTC

Quoted Text

OK, In the future I will refrain from freelancing and editorializing on designs I don't yet understand.

No excuse but the two wide open square A/C air outlets in the HEMTT blowing directly towards the windshield did not seem to make sense and made me think the unit had been installed improperly.

Fantastic reference photos you found there Gino.



Mike! You and Gino ARE AMAZING what with all your reference material and detailed builds!
165thspc
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Posted: Saturday, November 05, 2016 - 08:43 PM UTC
OK, In the future I will refrain from freelancing and editorializing on designs I don't yet understand.

No excuse but the two wide open square A/C air outlets in the HEMTT blowing directly towards the windshield did not seem to make sense and made me think the unit had been installed improperly.

Fantastic reference photos you found there Gino.
RotorHead67
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Posted: Saturday, November 05, 2016 - 09:03 AM UTC

Quoted Text

Nope, that is how it was designed to mount. It is a similar system to what was mounted in the first generation up-armored HMMWVs w/ASK.



It was the inside part of the below Red Dot system.



Gino:
Good find pic
HeavyArty
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Posted: Saturday, November 05, 2016 - 12:02 AM UTC
Nope, that is how it was designed to mount. It is a similar system to what was mounted in the first generation up-armored HMMWVs w/ASK.



It was the inside part of the below Red Dot system.

165thspc
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Posted: Friday, November 04, 2016 - 10:11 PM UTC
Something of possible HEMTT interest: - Early add-on cab air conditioning unit.


165thspc
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Posted: Friday, November 04, 2016 - 01:32 PM UTC
Taylor, that was my question also. It must be a hydraulic connection similar to the two steering gear boxes on the HEMTT.

The Pierce literature says it is mechanical/hydraulic with no electronics.
Taylornic
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Posted: Friday, November 04, 2016 - 10:03 AM UTC
Good score! That certainly helps with the modifications.

Any idea how it works? Lol

Is the left box receiving hydraulic pressure from hoses coming from the right box?
165thspc
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Posted: Friday, November 04, 2016 - 07:58 AM UTC
Something we might all be interested in regarding the Mk 23:

I tried something last night - since I cannot access the Oshkosh Defense website directly without clearance, I tried the Pierce Fire Equipment site. (Pierce is one of the Oshkosh fire equipment divisions.) It seems the TAK-4 suspension/rear steering system is also used on many of their heavy fire trucks.



http://www.piercemfg.com/Innovations/TAK-4/TAK-4-IRS

http://cdn2.hubspot.net/hubfs/1641088/StaticContentPages/Other/PDFs/16957_TAK-4_T3_SS_121914_WEB.pdf?t=1478275366429
165thspc
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Posted: Friday, November 04, 2016 - 03:19 AM UTC
Hey, I want to learn about the MK23 as much as anyone, so for my part, I'm good with these alternate topics!
Taylornic
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Posted: Friday, November 04, 2016 - 12:49 AM UTC
Sorry for taking us off topic. Seems like whatever thread of yours that I frequent, we always seem to leave your topic and just start talking trucks in general. Lol
165thspc
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Posted: Thursday, November 03, 2016 - 07:40 PM UTC
165thspc
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Posted: Thursday, November 03, 2016 - 07:10 PM UTC
No problem!
Thirian24
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Posted: Thursday, November 03, 2016 - 06:26 PM UTC
My appologies. I misread that.
165thspc
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Posted: Thursday, November 03, 2016 - 05:58 PM UTC
But Dustin the point here is that this is a "steering" axle.
Thirian24
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Posted: Thursday, November 03, 2016 - 02:39 PM UTC
Michael, what you're actually seeing on that axle, is the tire being pulled in that direction. On all trucks/trailers that have multiple non-steer axles, they tires will be "drug"/"pulled" during a turn, especially while it has a load on it. Depending on which way the vehicle is turning/backing, you'll notice the non-steer axle/tires... I don't know how to word it.. Maybe offset?

You can see it here for example.
Sorry I'll have to post the picture when I have a better signal.
165thspc
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Posted: Thursday, November 03, 2016 - 08:23 AM UTC
Back (more or less) to the main topic:

I was lucky enough for find one of the old Eduard etch sets on eBay. It is intended for the old Italeri Fuel Truck kit. Tonight's progress was to add the Oshkosh marked mud flaps from that set to my LHS vehicle.

I also installed the rear cable guide fairlead that comes with the new Voyager HEMTT etch set for the semi-tractor.


165thspc
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Posted: Thursday, November 03, 2016 - 07:54 AM UTC
Yes I do wish there were more photographs or some drawings of the 16.5 ton LHS.
Taylornic
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Posted: Thursday, November 03, 2016 - 06:24 AM UTC
I wish there were more than four pictures available. It will be an easy conversion, but it would be nice to know how those last 2 axles really work. If I only knew what the rear steering box looked like...
165thspc
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Posted: Thursday, November 03, 2016 - 06:16 AM UTC
This is what I think might be happening.




WRONG - A possible solution but incorrect for the MK23 vehicle!
165thspc
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Posted: Thursday, November 03, 2016 - 05:46 AM UTC
Gino I think I have to disagree with you on this one. On the photo in question wheel #3 looks parallel to #2 but off-set laterally from it.

The published Oshkosh sales literature definitely says axles #1, #3 & #4 steer.

One proposal that would explain both the steering and the photo: old steam locomotives used a trick to get around tight curves. The last drive axle did not steer but did move sideways in it's journal boxes to allow for some slight lateral movement and greater flexibility.

The entire number three axle assembly structure might move laterally (side to side) to allow it to more closely follow an overall curved line as the vehicle turns. It only needs to move to a small degree.

WRONG - A possible solution but incorrect for this vehicle!
HeavyArty
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Posted: Thursday, November 03, 2016 - 04:45 AM UTC
The third axle looks in line w/the second one to me. I don't think it has been photo-shopped, just a weird angle. I don't see why the third axle would need to be turnable. The PLS only has the rear axle turnable and it is pretty much the same setup.

As to the Mk23 model axles, they are all the same as part of the TAK-4 suspension and all can be easily turned as there are stabilizer arms that attach to steering arms on the rear axles to keep them straight. Check out my build review of the Mk23 to see more. I address turning the front wheels there. The rear can be turned in the same way.
165thspc
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Posted: Thursday, November 03, 2016 - 03:41 AM UTC
In this Oshkosh photograph the #1 and #4 axles are clearly steering. (The vehicle sales literature says the #3 axle also steers.)

I would say that there has been some photoshop work done here so nothing is for sure. Something does not look right with wheel #3. #3 looks straight, not turned and looks out of alignment with wheel #2.

Taylornic
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Posted: Thursday, November 03, 2016 - 12:31 AM UTC
Gino, agreed on the 8x8 conversion. Axles 3 and 4 are steerable. Not sure if I will need to go with a pair of front steer axles for the #3 and #4 positions or if a rear axle can be easily modified for steering.

I built the MK23 but left it in the Philippines when I returned. I cant remember the modeled differences between the front and rear axles. Should be an easy convesion.
Taylornic
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Posted: Wednesday, November 02, 2016 - 11:22 PM UTC

Quoted Text

Taylor' are you planning on building the long frame 6x6 LHS or the 8x8 LHS? The 8x8 looks very cool!



I want to try for the 8x8, it just has "that look".