Results 1 to 5 of 5
Thread: 4 blade prop vibration?
-
06-16-2009, 08:02 PM #1
4 blade prop vibration?
Last fall I banged up my 13 by 13 3 blade prop so I bought a 4 blade to replace it.It is a 13 by 12 brass prop.It seems to have a slight vibration but you can't really feel it,it's like you can hear it.Anyone ever have this problem.The boat seems to have a better hole shot.I gained 200 rpm and lost 3 mph top speed.
jy
-
06-17-2009, 12:30 AM #2
I dinged mine (13 x 13) and had it repaired. In the meantime I replaced it with a 13 x 12 as well, but a 3 blade. I know exactly what you mean. When pulling up a boarder I hear more of a rattling noise, like it's coming from under the steering wheel. It lasts 3 - 5 seconds and then it's normal. I guess it just creates that much more torque that it vibrates the entire steering column? I do have better holeshot, and I too lost about 3 mph on top end.
-
06-17-2009, 12:32 AM #3
OJ props are known to vibrate so get an ACME.
2008 Outback V - gravity III ballasts, perfect pass star gazer, hydraulic wake plate, depth finder, water stainer, rad-a-cage tower, board racks, tower mirror, bimini top, audio package d, graphics package e, appearance package, cockpit & tonneau cover, mooring cover, black stainless rubrail, docking lights, OJ 14.25x14.0 prop.
Toys: Ronix Viva 136 with Kai bindings, Phase5 Drew Danielo Pro, Straight Line Sumo Sac 750lb, 450lb, 125lb ballast.
-
06-17-2009, 08:37 AM #4Senior Member
- Join Date
- Jun 2009
- Location
- Chester, SC
- Posts
- 169
4 blade props cause vibration. 3 blade props cause vibration. 5 blade props cause vibration.
On the other hand, 4 blade props don't cause vibration, 3 blade props dont cause vibration, and 5 blade props dont cause vibration.
The thing is, all props respond to being spun. If your boat would have came with a 4 blade prop, and you dinged it and went to a 3 blade prop, you would notice some vibration. Simply because it is "different" vibration.
-
06-17-2009, 02:48 PM #5
Well said. It's kind of like ceiling fans.
My Mom said I'm not allowed to get wet!
2008 LSV (sold)
2000 Outback LS (sold)
LLTR!!!!!!!!