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The J109 is a fantastic racer - cruiser competitive across all wind ranges they are super stable in big breeze which allows you to drive the boat hard even when the puffs are above 20 knots. Come on board Bottom up Boats J109 "Going to Red" in race 1 of the Quoile 2 day regatta as we blast across the bottom reach at over 9 knots. With the A4 setting perfectly the crew are in complete control of the IRC 1 race. The crew is working perfectly to keep the boat flat and fast while setting up for the drop at kite at the bottom mark. The kite trimmer was making life easy for the skipper while keeping the boat at top speed, easing the kite into the puffs and trimming perfectly as the apparent wind moves forward as the boat speed build. Well done to the Redline Racing team who over came a few issue in race 2 to finish with 2 bullets after the first day Thank to the Quoile Yacht club located on the western shores of strangford lough for putting on a great day of racing. Look for more of the same tomorrow ........
Quick test of a tiny QEV cannon firing air at 12atm, viewed through a Schlieren setup (no razor blade). Edited from to 1/4th normal speed. I didn't quite understood the need for a razor blade but without one I still see the flow of air. For me, the razor blade just makes the dot of light smaller(?) If anyone can clarify me what the razor blade really does and where it should be placed (in the source of light or in the camera) I'd really appreciate. Also important to note that this is AWESOME to look with the naked eye but almost the dimmest light can blind you. I covered a tiny LED torch with aluminum foil and punctured a hole with a sewing needle, on the side! so that the LED doesn't bright directly through the hole. Take care with the eyes!!