Resources state the III/IV hybrid would have used 66cm road wheels.
But I can’t seem to find dimensions of the standard wheels of all the others. It seems the Panzer II L Luchs used +/- 66cm road wheels.
I still want to build a model in 1/72 for example of the III/IV. Perhaps using 3D printing for some mod parts.
1/72 could reduce costs 
Build just anything . We can’t wait any more:D
Cool. How will you plan to use the 3d printer? Do you have one?
No I don’t. But you can order production of parts by 3d model. Wheels are ideal (one design, many copies).
Turrets and hull design … seems DIY land! these would be way to expensive.
you may order just ONE copy, make few rubber forms and pours as much copies as you wish using Epoxy with fiber\carbon glass.This way likely should be less expensive. Finally, you may just use an plasticine to make a detail for form. I used this method not so long time ago. Works just perfect. Simple and cheap, but need some labour efforts .
Still going with my E-25 project and I am running into the usual problems with information or lack thereof. It would not make sense for the transmission to be of the same variety as the hetzer for example, a rear engine and transmission would suggest a significantly lighter transmission unit. Best data I can find suggests a ZF transmission of type AK 7-150 with six forward and one reverse gears. Does anyone know of a site or reference for this unit so I can model it? I am looking to provide the kind of detail found in the gunpower series (No 31 relates to the Hetzer both during and post war).
AK 7-150 is essentially the same housing as AK-7200 series, so, reverse engineer your drawings from that.
Rearward positioning of the transmission unit does not alter it’s internal operations, merely the arrangement and operation of the external linkages, be those servo-hydraulic or direct rod.
The major external changes do not occur until the AK-7400 series, in so far as I understand it, and even then they are dimensional changes of a matter of millimeters, and so will not be of significance in anything smaller than about 1:16 scale.
I hope the above information is of help to you.
Kind and Respectful Regards, Uyraell.
Thanks very much, off to look for details of the 7200. Do you happen to have anything or know of a source that is available?
You are most welcome, Mike 1158.
The two most common sources I could think of would be the “Detail and Scale” magazine articles of the late 1960’s, and the Squadron-Signal “In Action” series, one of which deals with the Panther and then-known variants.
Almost any photograph showing the maintenance on the AK-7200 transmission will help, and I have seen at least 4 such pictures online within the last couple of years, one of which is in our own photo section on this site.
The photo I have in mind is of an AK-7200 hanging in chains from a block-and-tackle supported by shearlegs, looking at the glacisplate of the Panther centerleft of image, and the driver & radio-op compartment roof resting against the number 2 forward left roadwheel. There’s a rather good view of almost the entire forward face of the AK-7200 transmission casing.
I hope the information is helpful to you Mike. 
Kind and Respectful Regards, Uyraell.
Thanks very much, I cannot find any such pictures in the pictures section and searching is not helpful. I am talking to the company but not getting much in the way of results. I know there are such resource about because someone has completed a panther gearbox with internals but =getting at the resources is another matter. Something that is still proving to be problematical is the method of installation. The 7200 is quite a big gearbox and having that plus a mayback in the rear of a vehicle seems to be impossible. Not exacty a case of transversely bolting the thing in’ where it fits’ either… Something I will comtinue to ponder on but thanks very much.
Does anyone have links for more information on the field modifications made to captured troop transport (example: Bren carriers and French UE tractors) that were fitted with small caliber anti-tank guns and were thrown into that role when needed?
I am also trying to confirm the presence of the rare Neubaufarhzeug figthing with the 19th Panzer Division near Dubno, Ukraine 1941. These rare tanks were in Norway–engaged in combat near the town of Kvam–but I read a few sentences that stated that one or two of these surviors made it to Russia. If anyone can confirm or even refute, that will help.
I am writing a book about the military work of Prof. Ferdinand Porsche, much referred to in this fascinating thread.
Most obscure to me is the VK1601. I find some references attributing it to MAN and Daimler-Benz and others mentioning Porsche and Skoda as key players in its creation. When work on it began in 1939 Porsche was still under contract to Daimler-Benz, so this could have been a channel for his involvement.
Any elucidations greatly appreciated.
According to Encyclopedia of german tanks of world war two: “Development order issued 22dec1939 []. Development of chassis entrusted to MAN [], turret to DB”.
The suspension was similar to VK901 (chassis MAN, development order 18jun1938, prototype chassis complete late 1939). That rules Skoda out of the suspension bit.
I think that if Porsche was involved it was with DB.
As for Skoda, I´ve never heard of them being involved with the “german” tanks, but there might have been plans for Skoda to produce it?
Good luck with the book!
Tony “PanzerWagen” Martin, the latest project
VK2801, very interesting. Probably better road than the III/IV
What do you guys know about it?