1/4" stuffing tube and Speedmaster sport 20 strut

[SloHD]

The Speedmaster sport 20 strut and a 1/4" stuffing tube seem to be a commonly used setup. So I just wanted to show this little problem I ran into. I haven't seen this mentioned anywhere, but maybe I've just missed it... The 1/4 tube fits nice and snug in the strut, but the bushing slides right into the tube and "basically" out the strut. To stop the bushing from sliding into the tube I soldered a short piece of 7/32 tubing on the end.

[longballlumber]

As designed and intended to be used the 1/4" tube is supposed to go through the speedmaster strut. The bushing then goes inside of the 1/4" tube.

See these picks (although this is for 1/4" flex, the concept is still the same for a 3/16" flex)

http://accu-techrchardware.com/sitebuilder/images/strut_setup_1-336x156.jpg

http://accu-techrchardware.com/sitebuilder/images/strut_setup_2-321x154.jpg

Later,
Ball

[785boats]

Yes SloHD. I'm afraid you have missed it.
The 1/4" tube should fit all the way through the strut to within about 3/16" from the rear of the strut.
The bush then fits inside the 1/4" strut & should spin freely with the 3/16" drive shaft spinning freely inside the bush too.

I personally like to cut a short piece of 1/4 tube & fit it into the strut but about 1/4" shorter at the front. The stuffing tube then only goes into the strut about 1/4". Not all the way through. That makes it easier to adjust the angle of the strut.

PS. Ball.
Looks like you posted while I was typing.
Cheers.

[SloHD]

Ah ok I see. I guess I was wrong. Thanks.

785boats- I think I will do that method. Thanks!

[properchopper]

Yes SloHD. I'm afraid you have missed it.
The 1/4" tube should fit all the way through the strut to within about 3/16" from the rear of the strut.
The bush then fits inside the 1/4" strut & should spin freely with the 3/16" drive shaft spinning freely inside the bush too.

I personally like to cut a short piece of 1/4 tube & fit it into the strut but about 1/4" shorter at the front. The stuffing tube then only goes into the strut about 1/4". Not all the way through. That makes it easier to adjust the angle of the strut.

PS. Ball.
Looks like you posted while I was typing.
Cheers.

That's exactly how I do it. These struts are apparently designed for IC power, square-end flexes, and take the prop thrust at the collar end of the bushing as opposed to the stinger struts which use the flanged-end bushing which isn't designed to take the prop thrust.

[tlandauer]

Yes SloHD. I'm afraid you have missed it.
The 1/4" tube should fit all the way through the strut to within about 3/16" from the rear of the strut.
The bush then fits inside the 1/4" strut & should spin freely with the 3/16" drive shaft spinning freely inside the bush too.

I personally like to cut a short piece of 1/4 tube & fit it into the strut but about 1/4" shorter at the front. The stuffing tube then only goes into the strut about 1/4". Not all the way through. That makes it easier to adjust the angle of the strut.Cheers.

I did that as well, thinking one can get a little angle adjustment out of this set up.

[SloHD]

Thanks guys. I wasn't using my head today. Lol. I've used only proboat stuff. First time using speedmaster with a floating bushing.