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Change is the one Constant -
ok the strut is at 0 right now if i adjust the strut where the prop nut angles up and the front of the strut angles down, wouldn't that give me more bow rise??
the motor is a 580L 2400kv or so..
water conditions are glassy to 1" chop with 5- 10mph winds i try to run it by the tree line where the water is calmestComment
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Yes that adjustment would apply force down at the transom. Remember you do not need large changes in the angle. Maybe start with 1 deg neg. But make sure your rudder face is parallel with the transom back edge. Other wise you could be counteracting lifting tendencies if the rudder is inducing lift as well. Actually that might be the first adjustment needed. If the bottom of your rudder (we here dont know how big it is. A piece of the missing puzzle) is angled away from the transom this could be adding lift. Move some weight forward. Just a little and do one thing at a time. Dont make 2 or 3 changes and head to the pond. You could compound the problem.
BTW with that motor and batts combo your running more then a sport setup. Thats almost 40k rpm. Do you have a 440 or 442 you can toss on the boat?
JohnChange is the one ConstantComment
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Just my 2 cents for what its worth. My sport Hydro did the same thing. I can actually make it happen by just putting on a prop that has to much pitch. The boat is crazy out of controll and will crash itself if i let it. You really need to stare really hard at the boat from a front veiw and side when this problem you have takes place , you need to know if its the transom starting to hop and then moving forward or is it the sponsons rocking side to side. My guess is its the rear of the boat because of the prop pitch or depth.........just a guess......... Try something drastic........Try this........Raise the prop to 1/2 to 5/8ths of an inch from the top of strut to the bottom of boat. You say you are at 1 inch so try it and see what happens. Let us know. M4a1usr is right and thinking the same thing. Try a smaller prop aswell but do one thing at a time so you dont get lost in all the changes you make.Last edited by Gary; 03-28-2010, 08:25 PM.PT-45, 109mph, finally gave up after last bad crash
H&M 1/8 Miss Bud 73 mph
Chris Craft 16 mphComment
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ok i have a x440 and an x442 i can put on ill try the 440
here are some pics i do have a long rudder.
i took some photos how do i upload them..?Comment
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When you post a reply, scroll down to manage attachments. click on that and you can upload pics. Be sure you comply with file sizes.Government Moto:
"Why fix it? Blame someone else for breaking it."Comment
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here are some pics, i adjusted the strut to negative angle of what i think is 1-2 degrees...Comment
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well just toasted my esc
... its was probably too weak any ways, 90 amp... I have a 120 im going to put in. I was running it in circles at about 25 mph , 1/4 throttle and after 2-3 minutes of that just trying to see when and why its hopping poof now my new hull smells like BBQ silica/plastic any other ideas? its still hopping scared to go 30+ i've submarined it 7 times already and i dont want to crack the fiberglass..
Last edited by sporthydrofan; 04-02-2010, 02:27 AM.Comment
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get rid of that 5s pack you dont need it with that motor go 4s,Comment
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well just toasted my esc... its was probably too weak any ways, 90 amp... I have a 150 im going to put in. I was running it in circles at about 25 mph , 1/4 throttle and after 2-3 minutes of that just trying to see when and why its hopping poof now my new hull smells like BBQ silica/plastic any other ideas? its still hopping scared to go 30+ i've submarined it 7 times already and i dont want to crack the fiberglass..
Partial throttle is the worst way to run a speedo. That adds alot of heat to it which kills the FET's. Your hull looks like a modified Miss Bud. They did not come FE so someone converted it. Nice paint. Get rid of the horizontal wing. It will cause problems above 50mph. Your hardware is also not stock. How much rudder do you have below the bottom of the strut? Looks like you have more then 3"?
JohnChange is the one ConstantComment
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just about 3.5 inches, remove the wing huh? okComment
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You did say that the hull is 32"? A Miss Bud is 27". Maybe raise the strut to be parallel with the rear ride pads? On some hydros, if the strut is too deep, it will cause the boat to bob uncontrollably when running straight. From there, you can play with the COG.Mitch Dillard, Darin, Jesse and Wolf on this forum can give you some good advise on this as they have run multiple hydros.Government Moto:
"Why fix it? Blame someone else for breaking it."Comment
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ok so ill try to raise the stut. keep the same angle the bobbing seemed to go away at higher speeds.. just had enough light left to run it with the 150a esc. is the long rudder good or bad? i figured its is good for stability it turns very well, I dont even have the turn fin on it and it still turns well. my COG is about 2" back from the sponson right now. What should i do to move it forward..? the 5s 5amp lipo is already shoved all the way in the nose. should i fill the sponsons with foam? then stick a metal rod in the foam once it is dry? any ideas?Comment
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Here some good read about the ProBoat 1/12th Miss Bud from Darin.
John
Last edited by m4a1usr; 03-28-2010, 10:08 PM.Change is the one ConstantComment
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