Outboard for Spindrift 11

[roam]

How long shoudl the shaft be on an outboard for a Spindrift 11?

 

thanks,

Hugh

 

[Steve W]

I have an 11N built to spec. I put a short shaft on and it isn't long enough. I plan to cut the transom down a bit to make it work, but if I was buying new I'd go long. Here it is with a Honda 2 LS.

 

https://www.youtube.com/watch?v=OsGBPCLJ3OM

[Chick Ludwig]

I like the Suzuki 2.5 from these folks. I've bought 4 motors from them so far!

https://onlineoutboards.com/collections/outboard-motors/horsepower_-2-5hp

[roam]

OK It sounds like a 20" shaft is what I need.

 

Thanks,

Hugh

 

[Hirilonde]

Outboard manufacturers have diagrams of their outboards showing how the shaft length corresponds to the transom.  Basically, the cavitation plate should be just below the bottom.

[Steve W]

On 11/20/2020 at 7:47 PM, Hirilonde said:

Outboard manufacturers have diagrams of their outboards showing how the shaft length corresponds to the transom.  Basically, the cavitation plate should be just below the bottom.

This is true in theory. But if you go forward and the prop comes out of the water, your perfect setup suddenly isn't. It's probably not a problem on a boat like the 11N, but on my cs20.3, I had to get a long shaft after trials.

[Hirilonde]

1 hour ago, Steve W said:

This is true in theory. But if you go forward and the prop comes out of the water, your perfect setup suddenly isn't. It's probably not a problem on a boat like the 11N, but on my cs20.3, I had to get a long shaft after trials.

The discussion is about a motor for a motor boat. In a small motor boat you trim the weight as needed, motoring is what you are doing. An auxilliary for a sailboat is totally different, both in function and application.