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Victoria University Antarctic Research Expedition Science and Logistics Reports 1984-85: VUWAE 29

Suggestions

Suggestions

(a)The gap in the runner through which the keel drops to be as narrow as possible.
(b)That the load from the keel to the runner to be transferred onto the base (running surface) rather than onto the top of the runner. At the moment on hard ice the keels provide a large delaminating load to the top of the runner.

These points could be discussed with the manufacturer.

6.The grizzly toboggans were not underslung by helo until this season. Initially, a four-point anchor system was used but the load would not hang straight below the helo and maximum speed was 70 knots. Later, we removed the battery, drained the fuel tank (it is easily removed) and underslung the toboggan by two small frames attached to the rear of the machine. The Bombadiers are underslung with a simple sling from the rear square tubular framing; this is probably inadequate for the grizzlies as (1) they are heavier; and (2) the square tubular framing is lighter than that on the Bombadiers. Hanging vertically from the two rear support points the toboggans travelled directly behind the helo at 100 knots.