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Monday, September 10, 2012

Series of short test drives

Some pictures of test drives in Baltic Sea, Ihasalu bay in 30 July and 9 September 2012. Purpose was to test some modifications in July and load bearing with waves in September.

In July with companion again, so some more outside pictures.

Preparing the chain for hydraulic pump.

Setting up pontoons.

Experienced seaman Borge from Norway - first time with the car on the sea.

Set up for shallow water, sterndrives in middle position.

Ancoring is important even in shallowest water - with river flow and wind drag you can easily lose your position.

What happens to ball bearing in winch block. I did know, it is weaker than needed. Still wanted to give a try. Here you see the outcome. Slide bearings stand more force, restored as was.

Second test was war hitting the storm and testing Amphibear with 600kg additional load. Storm we almost missed. When we exited the bay, the waves were about 1m high with wind about 20 knots. As you would expect, rolling with the waves in normal manner. Nothing special. Wave statistics of the period.

The extra load was water on top of pontoons in boxes for cement mixture. Load did not change behavior or stability of Amphibear. However, if I want more load to add, I need to use some additional inflatable pontoons for increased stability. For pontoon boat one pontoon should be able to carry full load of the boat plus some extra. Otherwize it is easy to find yourself upside down as result of small decline.

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