'87 Searay Slipping
There are two possibilities that come to mind. The prop has a neropreme
insert between the splined coupling and the propeller to absorb shock. They sometimes wear out and cause slippage as you mention. In which case a prop shop can install a replacement insert. The other and less likely is the splined coupling on the crankshaft of the engine. The drive shaft to the lower unit mates with this coupler. It is a neropreme filled cup that also absorbs shock. This requires pulling the engine to replace the hub and require a hoist to lift the engine. Hope this helps. Don Dando |
'87 Searay Slipping
Don Dando wrote: There are two possibilities that come to mind. The prop has a neropreme insert between the splined coupling and the propeller to absorb shock. They sometimes wear out and cause slippage as you mention. In which case a prop shop can install a replacement insert. The other and less likely is the splined coupling on the crankshaft of the engine. The drive shaft to the lower unit mates with this coupler. It is a neropreme filled cup that also absorbs shock. This requires pulling the engine to replace the hub and require a hoist to lift the engine. Hope this helps. Don Dando Don, It appears that my prop is missing what I would call an expansion ring on the back hub of the prop where the exhaust comes out. Could that be a problem? Blackie |
'87 Searay Slipping
"Blackie" wrote in message oups.com... Don Dando wrote: There are two possibilities that come to mind. The prop has a neropreme insert between the splined coupling and the propeller to absorb shock. They sometimes wear out and cause slippage as you mention. In which case a prop shop can install a replacement insert. The other and less likely is the splined coupling on the crankshaft of the engine. The drive shaft to the lower unit mates with this coupler. It is a neropreme filled cup that also absorbs shock. This requires pulling the engine to replace the hub and require a hoist to lift the engine. Hope this helps. Don Dando Don, It appears that my prop is missing what I would call an expansion ring on the back hub of the prop where the exhaust comes out. Could that be a problem? Likely not related. Put your spare prop on, go for a boatride and see if the problem persists. It's likely a worn hub and any (decent) prop shop can fix it. |
'87 Searay Slipping
airborne wrote: "Blackie" wrote in message oups.com... Don Dando wrote: There are two possibilities that come to mind. The prop has a neropreme insert between the splined coupling and the propeller to absorb shock. They sometimes wear out and cause slippage as you mention. In which case a prop shop can install a replacement insert. The other and less likely is the splined coupling on the crankshaft of the engine. The drive shaft to the lower unit mates with this coupler. It is a neropreme filled cup that also absorbs shock. This requires pulling the engine to replace the hub and require a hoist to lift the engine. Hope this helps. Don Dando Don, It appears that my prop is missing what I would call an expansion ring on the back hub of the prop where the exhaust comes out. Could that be a problem? Likely not related. Put your spare prop on, go for a boatride and see if the problem persists. It's likely a worn hub and any (decent) prop shop can fix it. Any idea about the size of the nut that holds the prop on? I don't think I have a socket to fit it. |
'87 Searay Slipping
"Blackie" wrote in message ps.com... airborne wrote: "Blackie" wrote in message oups.com... Don Dando wrote: There are two possibilities that come to mind. The prop has a neropreme insert between the splined coupling and the propeller to absorb shock. They sometimes wear out and cause slippage as you mention. In which case a prop shop can install a replacement insert. The other and less likely is the splined coupling on the crankshaft of the engine. The drive shaft to the lower unit mates with this coupler. It is a neropreme filled cup that also absorbs shock. This requires pulling the engine to replace the hub and require a hoist to lift the engine. Hope this helps. Don Dando Don, It appears that my prop is missing what I would call an expansion ring on the back hub of the prop where the exhaust comes out. Could that be a problem? Likely not related. Put your spare prop on, go for a boatride and see if the problem persists. It's likely a worn hub and any (decent) prop shop can fix it. Any idea about the size of the nut that holds the prop on? I don't think I have a socket to fit it. Whenever you go boating (besides wearing PFDs), you should be carrying a toolbox (so you can at least perform emergency repairs) and the tools to install your spare prop (you know- that other prop you always carry with you). If you're not already doing this, make sure you do the next time you go out boating (to safeguard the trust your passengers place in you). Pull up to an auto parts store and they'll be able to select the correct size for you. |
'87 Searay Slipping
airborne wrote: "Blackie" wrote in message ps.com... airborne wrote: "Blackie" wrote in message oups.com... Don Dando wrote: There are two possibilities that come to mind. The prop has a neropreme insert between the splined coupling and the propeller to absorb shock. They sometimes wear out and cause slippage as you mention. In which case a prop shop can install a replacement insert. The other and less likely is the splined coupling on the crankshaft of the engine. The drive shaft to the lower unit mates with this coupler. It is a neropreme filled cup that also absorbs shock. This requires pulling the engine to replace the hub and require a hoist to lift the engine. Hope this helps. Don Dando Don, It appears that my prop is missing what I would call an expansion ring on the back hub of the prop where the exhaust comes out. Could that be a problem? Likely not related. Put your spare prop on, go for a boatride and see if the problem persists. It's likely a worn hub and any (decent) prop shop can fix it. Any idea about the size of the nut that holds the prop on? I don't think I have a socket to fit it. Whenever you go boating (besides wearing PFDs), you should be carrying a toolbox (so you can at least perform emergency repairs) and the tools to install your spare prop (you know- that other prop you always carry with you). If you're not already doing this, make sure you do the next time you go out boating (to safeguard the trust your passengers place in you). Pull up to an auto parts store and they'll be able to select the correct size for you. The nut turned out to be 1 1/6", but It's so tight I will need and impact gun to get it off. I'll get my spare prop on this weekend to see if it corrects my problem. |
'87 Searay Slipping
I wouldn't stand in the way of anyone who wanted to buy another tool, BUT
the impact gun I was given as a present was feeble compared to the monsters used at the tire stores. When my tractor wheels needed to be removed, I found that the classic X-shaped lug wrench, abetted by a ten foot length of tubing (ID big enough to go over the lug wrench sockets) removed most of them and twisted off the two that were solid blobs of rust. Arrange things so that you are lifting up on the length of tubing. It might help to have someone else steady the wrench until the torque is applied but a cardboard box will work too. Roger http://home.insightbb.com/~derbyrm "Blackie" wrote in message oups.com... airborne wrote: "Blackie" wrote in message ps.com... airborne wrote: "Blackie" wrote in message oups.com... Don Dando wrote: There are two possibilities that come to mind. The prop has a neropreme insert between the splined coupling and the propeller to absorb shock. They sometimes wear out and cause slippage as you mention. In which case a prop shop can install a replacement insert. The other and less likely is the splined coupling on the crankshaft of the engine. The drive shaft to the lower unit mates with this coupler. It is a neropreme filled cup that also absorbs shock. This requires pulling the engine to replace the hub and require a hoist to lift the engine. Hope this helps. Don Dando Don, It appears that my prop is missing what I would call an expansion ring on the back hub of the prop where the exhaust comes out. Could that be a problem? Likely not related. Put your spare prop on, go for a boatride and see if the problem persists. It's likely a worn hub and any (decent) prop shop can fix it. Any idea about the size of the nut that holds the prop on? I don't think I have a socket to fit it. Whenever you go boating (besides wearing PFDs), you should be carrying a toolbox (so you can at least perform emergency repairs) and the tools to install your spare prop (you know- that other prop you always carry with you). If you're not already doing this, make sure you do the next time you go out boating (to safeguard the trust your passengers place in you). Pull up to an auto parts store and they'll be able to select the correct size for you. The nut turned out to be 1 1/6", but It's so tight I will need and impact gun to get it off. I'll get my spare prop on this weekend to see if it corrects my problem. |
'87 Searay Slipping
I needed the impact gun for the nut because I couldn't hold the prop to
keep it from turning. It worked fine and my spare prop also woeks fine - so it must have been the rubber hub inside the other prop slipping. I'll get it repaired. Thanks everyone for your help!!!! derbyrm wrote: I wouldn't stand in the way of anyone who wanted to buy another tool, BUT the impact gun I was given as a present was feeble compared to the monsters used at the tire stores. When my tractor wheels needed to be removed, I found that the classic X-shaped lug wrench, abetted by a ten foot length of tubing (ID big enough to go over the lug wrench sockets) removed most of them and twisted off the two that were solid blobs of rust. Arrange things so that you are lifting up on the length of tubing. It might help to have someone else steady the wrench until the torque is applied but a cardboard box will work too. Roger http://home.insightbb.com/~derbyrm "Blackie" wrote in message oups.com... airborne wrote: "Blackie" wrote in message ps.com... airborne wrote: "Blackie" wrote in message oups.com... Don Dando wrote: There are two possibilities that come to mind. The prop has a neropreme insert between the splined coupling and the propeller to absorb shock. They sometimes wear out and cause slippage as you mention. In which case a prop shop can install a replacement insert. The other and less likely is the splined coupling on the crankshaft of the engine. The drive shaft to the lower unit mates with this coupler. It is a neropreme filled cup that also absorbs shock. This requires pulling the engine to replace the hub and require a hoist to lift the engine. Hope this helps. Don Dando Don, It appears that my prop is missing what I would call an expansion ring on the back hub of the prop where the exhaust comes out. Could that be a problem? Likely not related. Put your spare prop on, go for a boatride and see if the problem persists. It's likely a worn hub and any (decent) prop shop can fix it. Any idea about the size of the nut that holds the prop on? I don't think I have a socket to fit it. Whenever you go boating (besides wearing PFDs), you should be carrying a toolbox (so you can at least perform emergency repairs) and the tools to install your spare prop (you know- that other prop you always carry with you). If you're not already doing this, make sure you do the next time you go out boating (to safeguard the trust your passengers place in you). Pull up to an auto parts store and they'll be able to select the correct size for you. The nut turned out to be 1 1/6", but It's so tight I will need and impact gun to get it off. I'll get my spare prop on this weekend to see if it corrects my problem. |
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