Demag Future Halftrack
This is my attempt to build HKp6.05 6.06 halftracks. During 1941 Demag and Hanomag produced and tested the HKp6.03 which was a proposed replacement for the Sd.Kfz.251 its armoured body had been designed by bussing-NAG and resembled the 251 however its engine bay unlike the 251 was watertight with all ventilation being provided via louvers in the upper surfaces. This allowed for a much improved wading ability over the 251. Testing and development continued through 1942with 7 development vehicles and a further 30 production vehicles.
The information from testing these vehicles and troop feedback from the production vehicles fed directly into the next generation test vehicles. Demag AG was to take the search for a future halftrack on alone now with the 6.05 and 6.06. The two new halftracks 6.05 and the shorter 6.06 featured a watertight armoured body which was up to 30mm think in vital places and had been simplified as much as possible to reduce machining and manufacturing time to lower cost and speed up production. The two new halftracks would be identical, the only difference was in length with the 6.06 being shorter having two pairs of road wheels less.
The halftracks were powered by the Maybach HL50 engine connected to an Olvar 8 speed preselect gearbox. In a move from traditional German half tracks of the centre sprocket drive was replaced with a toothed rim drive sprocket as used by heavier tanks. These sprockets drove extended pin track similar to the Luchs tank and this arrangement was used as it was much quieter than existing halftrack track ( the system was adopted for use on the larger s.W.S ) The design also saw a staggered road wheel arrangement introduced to replace the interleaved road wheels of current models. The torsion bar suspension system was replaced with bolt on bogies two per side on the short 6.06 and three units per side on the longer 6.05. Both halftracks featured the new Argus disc brakes for both the steering brakes and the road brakes. Halftracks to this point used drum brakes which were mounted on the rear of the drive sprockets and was a constant source of problems reported by troops due to water and mud ingress. The new disc system on the 6.05 and 6.05 was held within the waterproof hull keeping them well away from mud and water.
By late 1942 a single short HKp 6.06 had been completed by Demag, sadly at the end of 1942 the project was terminated however much of the development work was used in the larger s.W.S halftrack which successfully entered production during 1943.

In the closing stages of the war British forces overran the Demag factory at Wetter-Rhur and two incomplete specimens of the HKp 6.05 and HKp 6.06 were inspected and all drawings secured. Full details appearing in BAOR technical Intelligence Report No. 49 dated 16 November 1945 Demag works Wetter/Ruhr visited 2,12 Oct + 1 Nov 1945 Herr Jerzembeck designer was interviewed.
Sadly when attempts were made to locate the drawings stated in the BAOR technical Intelligence Report all that was found was a letter authorising destruction of these documents which dated from the 1950s.

My models have brought together all remaining information and photographs and have been further supplemented with excellent drawings from Alfred van Netburg and using CAD software I have been able to recreate what I think the HKp 6.05 and HKp 6.06 would have looked like had they been carried forward into production.
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