Bent shaft? |
Post Reply |
Author | |
Kristof
Grand Poobah Joined: October-08-2007 Location: Bree, Belgium Status: Offline Points: 3387 |
Post Options
Thanks(0)
Posted: April-22-2014 at 7:44am |
Pete, Tim and other specialists...
A video tells more than a thousand words, so I took my smartphone: So, is my shaft bent? When I put a long screwdriver next to the shaft (tip pointed on the bilge floor and screwdriver shaft next to prop shaft, for lack of a better explanation by a non-english speaking forreigner )I can see it move back and forth a little (read: half a millimeter) There is no play whatsoever in the strut, prop looks fine and shaft moves nice and freely (checked alignment last week). I have a negligeable vibration between 2100 and 2150 RPM (between 30-35 KPH, 19-21 MPH)... Should I start to panic by now...?? |
|
- Gun control means: using BOTH hands!
- Money doesn't make one happy, but when it rains cats and dogs, it's still better to cry in a Porsche than on a bicycle... |
|
ny_nautique
Platinum Member Joined: June-01-2011 Location: Albany NY Status: Offline Points: 1215 |
Post Options
Thanks(0)
|
Here's the video:
|
|
- Jeff
1999 Ski Nautique |
|
Kristof
Grand Poobah Joined: October-08-2007 Location: Bree, Belgium Status: Offline Points: 3387 |
Post Options
Thanks(0)
|
Oops, sorry, my bad... Edited my post.
Thanks Jeff |
|
- Gun control means: using BOTH hands!
- Money doesn't make one happy, but when it rains cats and dogs, it's still better to cry in a Porsche than on a bicycle... |
|
phatsat67
Grand Poobah Joined: March-13-2006 Location: Indiana Status: Offline Points: 6147 |
Post Options
Thanks(0)
|
Get a dial indicator Kris. That will tell you for sure and you'll use it again with all your mechanical skill.
|
|
Kristof
Grand Poobah Joined: October-08-2007 Location: Bree, Belgium Status: Offline Points: 3387 |
Post Options
Thanks(0)
|
Ha, that's one of the answers I expected Zach
But, before I spend yet more money on the B(reak)O(ut)A(nother)T(housand), what is your opinion on what you see in the video? |
|
- Gun control means: using BOTH hands!
- Money doesn't make one happy, but when it rains cats and dogs, it's still better to cry in a Porsche than on a bicycle... |
|
phatsat67
Grand Poobah Joined: March-13-2006 Location: Indiana Status: Offline Points: 6147 |
Post Options
Thanks(0)
|
It looks like its moving the shaft log around a bit but that could be inconsistency in the shaft packing? The spec for tolerance in a shaft is .003 or less run out. So its a pretty tight spec but a little room for error.
|
|
8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
Post Options
Thanks(0)
|
Kristof,
I agree with getting the dial indicator out. Besides the shaft, the coupling could be an issue too. Ether with a bad fit to the shaft or a coupling face that isn't running true to the shaft. |
|
Kristof
Grand Poobah Joined: October-08-2007 Location: Bree, Belgium Status: Offline Points: 3387 |
Post Options
Thanks(0)
|
So dial indiactor it is... I'll get back to ya
|
|
- Gun control means: using BOTH hands!
- Money doesn't make one happy, but when it rains cats and dogs, it's still better to cry in a Porsche than on a bicycle... |
|
Post Reply | |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |