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Jacking plate dramas
Hi, wondering if anyone can help me. I have put a 12" hydraulic jacking plate on my 2013 Alpha 211 hull id LJEO2262L213 i am now having some problems i will start by listing problems 1.porpoising at low speed up to 30mph/i feel if i could trim in a little bit more i could stop the porpoising . 2.cant get the lift at high speed boat feels like its bogged down i can get the boat up but i have to trim out twice as much as before but still does not feel right. 3.hole shot i when fully loaded not great.I have tested boat in all possible trim and lift positions sometimes it feels close but not right i also spent 4hours testing with mercury racing,trying props and went best with the prop that is on it temptest 27 tried some 4 blades they never had a 4 higher than 24 pitch as stated i bought a 12 inch bobs hydraulic i did not realise that my old plate was 10 inch until after i received new plate i did not realise they had changed the hull on 211 as i live in australia it is a bit hard to exchange.The jacking plate cost $2000 and $2000 to fit hence why i am reluctant to change it.There is only 30 legends in australia and only 4 211s none of the 29 legends have hydraulic plates so i cant get a lot of help at home. You may be thinking why fix something thats not broken? i fish alot of shallow tidal water and a hydraulic plate is a huge advantage hope some one can help or have i stuffed up in getting a 12 inch plate cheers mike
Last edited by MichaelNewman; 12-29-2015 at 06:04 PM.
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I have come to the conclusion that i have changed the centre of gravity in fitting the 12 inch plate and will be putting the old plate back on.
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Return the 12" hydraulic and swap it for a 10" hydraulic...
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asked bobs if they would do that but no response
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I have a 2013 Alpha 211DC with 2 power poles, 10" Bobs Action Series Jack plate, 25 Fury prop worked on added a little cup, I have no problem getting up on plane, wot 75mph by myself at 6000 rpm. Hope this helps.
2013 A211 250 Pro XS
Bob"s 10" Action Series Hydraulic Jack Plate
2-8' Power Poles
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great numbers coops if only i had got a 10 inch i would be loving life as i am in australia its is going to be a expensive exercise bobs wont even reply to my emails im going to have to ring i would still love to have a hydraulic plate but the right one
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You never said what motor youre running, prop to pad height, water psi, etc.
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motor 250xs prop blue printed 27 tempest height and water all good the extra 2inches of set back have turned the best boat into the worst
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motor 250xs prop blue printed 27 tempest height and water all good the extra 2inches of set back have turned the best boat into the worst
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I believe boat guy is in pretty good with Bob's....Send him a pm? It's worth a try...
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Call Tim st SMI Marine in Louisville KY. He is extreemly good with performance setups. He has helped me on more than a few occasions with any type of problem I've ever had.
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Member
Sounds like you are trying to run it too high!
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How many RPM's are you turning wide open? Could the 27 pitch be too much prop?
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