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Old Aug 03, 2010, 06:33 PM
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Joined Nov 2008
190 Posts
help with graupner flex shafts ?

right i would like to put one of these shafts into my mini mono so do they have at the end of the coupling a flex bit instead of soild ?


sorry if i sound dumb just need to know so i have a bit of flex beacues i dnot think motor will go low enough also i thought they were cheap ? are they worth it ?

cheers alex
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Old Aug 03, 2010, 07:46 PM
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Southern U.S.
Joined Jun 2008
7,682 Posts
The picture is small but it says: "Stainless Steel Shaft with Nickle Plated Brass Tube and Brass Bushings."

I would take that as being a solid shaft.

Graupner makes flex couplers, dont know what size you need... http://www.offshoreelectrics.com/pro...?prod=grp-3344
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Old Aug 04, 2010, 02:10 AM
Boaters are nice people.
Sneek, Netherlands.
Joined May 2004
5,145 Posts
Hi Alex,

These shafts are designed for scale boats with slow revving motors, hence the brass bushings.
If you use a flex coupler and put stress on the inside bushing, it'll wear relatively fast and will start to rattle and leak.

If you only run the boat every once and a while that's no problem, 'heavy' use will result in the above situation.

I'd rather go for a 'real' flexshaft and strut/stinger in that case.

Regards, Jan.
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Old Aug 04, 2010, 02:23 AM
nick 30
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Joined May 2009
2,790 Posts
i agree with scorpion and jan, could use a solid shaft with flex coupler or buy a complete flex shaft, go with the flexi shaft, its cheaper
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