fountain 47 props touching each other when running ?
08-09-2010, 07:05 PM
#1
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fountain 47 props touching each other when running ?
This is my thought... had a friend running at 1000 island poker run this w-end. slight shock in the steering was felt, that's about it, rpm went up... stopped and 1 drive was torn off...
feels like port drive prop hit center drive prop. snapped the drive shaft joints, then drive shaft spinning would hit the drive housing causing it to break then drive came off hold only by shifter cable and bellows...
would the center drive be able to spin the prop on stbd drive gear case?
if trimmed too high, maybe, that is the only real problem I can find...
did someone else ever experienced this problem?
feels like port drive prop hit center drive prop. snapped the drive shaft joints, then drive shaft spinning would hit the drive housing causing it to break then drive came off hold only by shifter cable and bellows...
would the center drive be able to spin the prop on stbd drive gear case?
if trimmed too high, maybe, that is the only real problem I can find...
did someone else ever experienced this problem?
Last edited by jeff32; 08-14-2010 at 01:20 PM.
08-09-2010, 07:12 PM
#3
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look at the skegs... not even broken, that's why the overtrim idea is the one held... do you guys have trim limit switch on your triples ?
look at the skegs... not even broken, that's why the overtrim idea is the one held... do you guys have trim limit switch on your triples ?
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Sure lucky it did'nt sink.
08-09-2010, 07:58 PM
#5
21 and 42 footers
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Maybe overtrimming could have snapped the U-joint and at high rpm broke the gimbal THEN causing the drive to drop down and hit the center drive.
BTW: I cracked a XR case by overtrimming but luckily it came apart at only 2,000 rpms while coming off plane....didn't do that much damage!!
BTW: I cracked a XR case by overtrimming but luckily it came apart at only 2,000 rpms while coming off plane....didn't do that much damage!!
08-09-2010, 08:31 PM
#7
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that was also my thought at first, but when I saw the center drive spun the prop on the stbd drive gear case (look at picture) I then thought the same thing happened to port drive on the center or vice versa...
Anyway, we'll fix it and will run this w-end!
Anyway, we'll fix it and will run this w-end!
08-09-2010, 09:05 PM
#9
21 and 42 footers
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at least my theory.........even after taking it apart you might never know.
08-09-2010, 11:10 PM
#10
Very simple......it the drives are not brought up even or not even at a turn that will happen. I went through two sets of props on my triple because of that mistake, I made with trim. Also notice how much lower the center drive is vs. the outside. If the center is to high it brings the outside drives closer. Notice the tie bar. Tom
