Author Topic: A What If Amphibious Vehicle  (Read 375 times)

Offline PFJN

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A What If Amphibious Vehicle
« on: May 15, 2023, 09:02:56 AM »
Hi,
I;ve started work on trying to build a 1/35 scale model of a "what if" idea that I had.  Right now I'm still playing around with some ideas, but the image below shows kind of what I am thinking.

The thought is to take a commercially available turret and main gun and put it onto a tracked vehicle hull that has some degree of amphibious capability.

Right now I am looking at usinga 3D model that I downloaded off the internet of something called a Cockerill 3105 turret.  Although the Cockerill 3105 turret is desined for weapons up to 105mm, from some of the stuff that I have read on the internet it can also accomodate a 90mm gun.  As such, I am thinking of fitting with a rifled Cockerill 90mm Mk 8 gun which, as I understand it, can fire a range of ammunition including an Armor Piercing, Fin stabilized, Discarding Sabot round, a High Explosive Plastic round, a smoke round, and a barrel launched anti-tank missile called the "Falarick".

Right now I am using the current 3D turret model as a place holder, and I hope to use it and other info off the internet to put together something that I might be able to 3D print at a 1/35 scale for my model.

Later I want to look at adding propellers or waterjets on the back end of the vehicle and some sort of ramp forward.

Regards

Pat


Offline Frank3k

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Re: A What If Amphibious Vehicle
« Reply #1 on: May 15, 2023, 09:29:50 AM »
The HobbyBoss LAV-150 with 90mm Cockerill might be source for the turret.

Details on Scalemates


Offline PFJN

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Re: A What If Amphibious Vehicle
« Reply #2 on: May 15, 2023, 10:21:57 AM »
Hi,
Thanks for the suggestion.
Pat


Offline PFJN

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Re: A What If Amphibious Vehicle
« Reply #4 on: May 16, 2023, 01:02:28 AM »
Hi,
Thanks.  I think I may have an unbuilt Hobby Boss model of this kit somewhere that I can try and use as a reference.
Pat

Offline Story

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Re: A What If Amphibious Vehicle
« Reply #5 on: May 16, 2023, 07:11:29 AM »
IIRC, that V150 turret looks too small for your concept
http://beyondthesprues.com/Forum/index.php?topic=9083.msg169654#msg169654

How about a Cadillac Gage 105 Stingray turret?  They didn't crack like the hulls did.


Offline Story

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Offline PFJN

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Re: A What If Amphibious Vehicle
« Reply #7 on: May 17, 2023, 09:20:28 AM »
Hi,

I think that may be the turret that I am currently using.  I am trying to convert it from a 105mm gun down to a 90mm gun, like shown in the video.  The relatively high angle of elevation (+42deg) shown in the video seems like it could be useful in an urban or semi urban environment including some of these artificial fortified islands that are getting built in the South China Seas. (https://www.scmp.com/news/china/diplomacy/article/3198504/fortified-south-china-sea-artificial-islands-project-beijings-military-reach-and-power-say-observers)

I have also added a rugh idea that I have for a bow ramp.

Regards

Pat




PS.  I still need to reduce the size of the aft turret overhang, which looks like it can be made smaller for a 90mm magazine, as shown in the video in the previous link above.
« Last Edit: May 17, 2023, 09:22:10 AM by PFJN »

Offline PFJN

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Re: A What If Amphibious Vehicle
« Reply #8 on: May 19, 2023, 12:09:02 PM »
Hi,
I looked around on the internet and found some images of an external hydro-pneumatic suspension unit from a company called Horstmann that I used to make up something kind of similar in 3D CAD, that I hope to 3D print for my model.  Apparently this type of suspension is similar to those used on other amphibious vehicles and allows the road wheels and treads to be retracted up when the vehicle is in the water.



Regards

Pat

Offline LemonJello

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Re: A What If Amphibious Vehicle
« Reply #9 on: May 19, 2023, 09:36:01 PM »
Enjoying the development work going on here.

Offline Frank3k

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Re: A What If Amphibious Vehicle
« Reply #10 on: May 19, 2023, 10:21:26 PM »
Does the bow ramp fold up to conform with the front o the vehicle? It might make a good armor shield when not in the water.

Offline apophenia

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Re: A What If Amphibious Vehicle
« Reply #11 on: May 20, 2023, 02:23:26 AM »
... an external hydro-pneumatic suspension unit from a company called Horstmann ...

Excellent choice Pat  :smiley:  That's the Horstman InArm HSU as used on the Puma, Mobile Protected Firepower demonstrator, etc.

-- https://horstmangroup.com/horstman-products/horstman-inarm/
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Offline PFJN

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Re: A What If Amphibious Vehicle
« Reply #12 on: May 20, 2023, 07:48:47 AM »
Hi,

Thanks for the feedback everyone.  For the ramp, I'm still working on it, but its based on something that I mocked up previously in cardboard.  It's supposed to be hinged and articulated to be more boat like when deployed but flatter when retracted.

Pat






Offline PFJN

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Re: A What If Amphibious Vehicle
« Reply #13 on: May 25, 2023, 12:16:44 PM »
Hi,
I've been working on updating some of the dimensions, escpecially in way of the suspension and tracks.  I've been trying to model the tracks to be similar to some of the newer composite band tracks like those made by a company called Soucy.  Below is an image of where I currently am.  I still need to modify the drive sprocket to mesh with the new tracks, and I also messed up my measurement just a little leaving me off by about half a "pad" width, that I still need to fix.

Hopefully things are moving along though.

Pat


Offline Buzzbomb

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Re: A What If Amphibious Vehicle
« Reply #14 on: May 25, 2023, 01:24:10 PM »
Interesting approach, so far looking very good

Offline GTX_Admin

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Re: A What If Amphibious Vehicle
« Reply #15 on: May 26, 2023, 01:35:52 AM »
I've been trying to model the tracks to be similar to some of the newer composite band tracks like those made by a company called Soucy. 

I have had discussions with this company in real life - some interesting stuff they do.
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Offline apophenia

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Re: A What If Amphibious Vehicle
« Reply #16 on: May 26, 2023, 05:51:02 AM »
... I've been trying to model the tracks to be similar to some of the newer composite band tracks like those made by a company called Soucy....

Another excellent choice  :smiley:

Soucy Bandtracks: Quebec snowmobile gits make good! C'est bon, non?

I have had discussions with this company in real life - some interesting stuff they do.

Greg: Any idea if the neighbours at Camso (Camoplast/BRP as was) represent a genuine rival to Soucy? The Michelin acquisition of Camso would seem to add credibility. But Soucy has a hell of a lead!

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Offline GTX_Admin

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Re: A What If Amphibious Vehicle
« Reply #17 on: May 27, 2023, 01:13:26 AM »
Greg: Any idea if the neighbours at Camso (Camoplast/BRP as was) represent a genuine rival to Soucy? The Michelin acquisition of Camso would seem to add credibility. But Soucy has a hell of a lead!

Not sure to be honest.
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Offline PFJN

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Re: A What If Amphibious Vehicle
« Reply #18 on: May 29, 2023, 01:29:08 PM »
Hi,
I still need to modify the drive sprockets, but the images below show what the tracks and suspension would look like with the tracks in their operational position and with the suspension, roadwheels and tracks retracted for operations in water.

Pat




PS.  Unfortunately the above images aren't to the same scale.  But overall the Idler is pushed back about 11cm (I think) when the tracks, roadwheels and suspensipons are retracted.
« Last Edit: May 29, 2023, 01:39:10 PM by PFJN »