Flex cable failure

[785boats]

What I usually do is solder (or CA glue) a short piece of brass tube, the next size down, into the end of the stuffing tube. About half an inch into the stuffing tube & about 1/4" protruding into the strut.
This allows for strut angle adjustment. But it also stops any movement or whipping between the stuffing tube & the strut which will reduce stress & fatigue at the weld in the flex.
Of course the liner does not protrude into the strut now & has to be cut to fit inside the stuffing tube flush with the little insert.

Small tube soldered into stuffing tube.

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Strut in place.

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[martin]

As Paul has explained with short step down tube the teflon liner will be slightly shorter, this makes no difference at all to the workings of the flex shaft not having the liner as long as it was before.

[rol243]

Yes i meant to drill the strut so the brass tube liner can slide in approx 1 inch.

[robbo1]

What I usually do is solder (or CA glue) a short piece of brass tube, the next size down, into the end of the stuffing tube. About half an inch into the stuffing tube & about 1/4" protruding into the strut.
This allows for strut angle adjustment. But it also stops any movement or whipping between the stuffing tube & the strut which will reduce stress & fatigue at the weld in the flex.
Of course the liner does not protrude into the strut now & has to be cut to fit inside the stuffing tube flush with the little insert.

Small tube soldered into stuffing tube.

[ATTACH=CONFIG]166527[/ATTACH]

Strut in place.

[ATTACH=CONFIG]166528[/ATTACH]

I quite like this idea as it gives me adjustability for strut angle and no drilling into the strut. Stuffing tube I’m using is 9/32 with Teflon liner to accomodate the 3/16 flex cable, so does that mean I need the 1/4 tube for the sleeve? I’m used to working in millimetres so can someone please confirm or correct me if that’s wrong.

Also should the prop shaft be running in the strut only? I have just realised the prop shaft is running 10-15mm into the stuffing tube as well. The flex cable I ordered from ose has prop shaft length of 3.125, should I have ordered the 2.75 long prop shaft?

[785boats]

Yes, you need the 1/4" tube to fit inside the 9/32" stuffing tube.

If the solid prop shaft protrudes out of the strut into the stuffing tube, then adjustments will be almost non existent.
You may well need the shorter shaft so that the flex enters the strut,
Save the longer shaft for another boat that maybe has a stinger on it rather than a strut.