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Hello.
I rebuilt a Robbe Scarab last year, I made a mould of the hull and then made a fiberglass hull out of it. I didn't have a chance to test the boat until last week.
The boat is porpoising / jumping a lot, no trim tabs were installed when I tested it. COG is set at 30% of the hull length (from the transom). Transom to propeller's hub offset is 7% of the hull length. Strut angle is -4ยบ (strut pointing downwards slightly)... I installed trim tabs but didn't have a chance to test if it solves the problem... I think that the boat is too heavy (2,3Kg for a 26" hull).
This is the video of the test (sorry for the music but I found the boat's behaviour so funny...):
Could someone give some clues of what can I do to make it sail without jumping out of the water?
Regards
I rebuilt a Robbe Scarab last year, I made a mould of the hull and then made a fiberglass hull out of it. I didn't have a chance to test the boat until last week.
The boat is porpoising / jumping a lot, no trim tabs were installed when I tested it. COG is set at 30% of the hull length (from the transom). Transom to propeller's hub offset is 7% of the hull length. Strut angle is -4ยบ (strut pointing downwards slightly)... I installed trim tabs but didn't have a chance to test if it solves the problem... I think that the boat is too heavy (2,3Kg for a 26" hull).
This is the video of the test (sorry for the music but I found the boat's behaviour so funny...):
Could someone give some clues of what can I do to make it sail without jumping out of the water?
Regards
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