Square drive adapter for 5mm motor shaft for OB

[LuckyDuc]

I have been using the Hyperperformance collet for my UL-1 motor to square drive in my OS lower unit, but it seems a bit too soft. The drive cable spins just enough in it to get stuck in it. Does anyone else make a collect for this made from stronger aluminum or possibly steel?

[kendt]

I am currently trying to figure one out as well. I wondered if a straight coupler with set screws on opposite sides would work or a regular style collet reversed so the set screws clamp the square end and the collet end clamps around the motor shaft. Not sure if either option would work without adjusting the space between the motor and lwr unit.

[marko500]

I have been using the Hyperperformance collet for my UL-1 motor to square drive in my OS lower unit, but it seems a bit too soft. The drive cable spins just enough in it to get stuck in it. Does anyone else make a collect for this made from stronger aluminum or possibly steel?

I'm running into the same thing. I also was thinking about how to use a collet. I think I read somewhere about putting some Loctite into the coupler and about someone making shafts with a little larger square on one end that fit the coupler better. Mine jams but has not slipped yet so I've just been living with it.

Mark

[LuckyDuc]

I was living with mine also, but it broke the shaft right at the coupler during my the last heat race. I think it broke because it wasn't free floating any more.
If it had not been for a fellow racer having a spare flex shaft (Mike Ball), I would have been out of that class for the rest of the day.

[HTVboats]

You could solder the tip of the square cable or tap a couple set srews in the aluminum coupler. Knock on wood we have put a lot of laps and test sesions with spec and larger up to 4082 motors on the OS lower and have not seen a failure yet. I guess you also could consider anodizing the coupler which would harden the surface. Cables break from use as long as it doesn't become a pattern.
Mic

[carlcisneros]

I have done what Mic has in soldering the tips of the squared cable. works pretty good.

[LuckyDuc]

I'll try the solder route on my spare. Thanks!

[bigwaveohs]

I have been using the Hyperperformance collet for my UL-1 motor to square drive in my OS lower unit, but it seems a bit too soft. The drive cable spins just enough in it to get stuck in it. Does anyone else make a collect for this made from stronger aluminum or possibly steel?

Are you using the OS flex cable? The K&B flex cable is a little larger and a better fit in the HP collet. You will need to sand down the other square end a little bit to fit in the OS stub shaft, but it's a better setup with the K&B flex cable and won't spin in the collet.
JMHO,
Pete

[longballlumber]

Hey Sean,

I have been using the square drive collet made by Ray Fuller and the same OS brand flex shaft for 2 full season now with no issues. I am no tunnel expert, but I would bet they want that flex shaft floating for a reason. Why? I am not sure.

[Kris Flynn]

The couplers from Ray Fuller are the ones made by REK machining. They are what I use in my adaptor kits.

Some guys have bought flex shafts from me that have a square on 1 end to have a snug fit in the Hyperformance collet and smaller on the other end to have a snug fit in the OS prop shaft assembly

[LuckyDuc]

I couldn't find a link for the Fuller/REK coupler. Fuller fast EL seems to be an Ebay only store now with no reference to the coupler.

[longballlumber]

I couldn't find a link for the Fuller/REK coupler. Fuller fast EL seems to be an Ebay only store now with no reference to the coupler.

Yeah... I looked yesterday and couldn't find one either. Maby Kris Flynn can help with getting you one. I also know that Kris is "the guy" when it comes to spare shafts. Maybe he has couplers too.

Later,
Mike

[properchopper]

The couplers from Ray Fuller are the ones made by REK machining. They are what I use in my adaptor kits.

Some guys have bought flex shafts from me that have a square on 1 end to have a snug fit in the Hyperformance collet and smaller on the other end to have a snug fit in the OS prop shaft assembly

I bought three of these shafts. One to use & two spares . The spares are getting lonely in my parts box since the one in use just keeps working, working.

[LuckyDuc]

Hey Tony,

Are you running it in an OS lower unit?

Mr Flynn,
I would like to get the REK coupler with two of your flex cables to use in my OS lower unit. Please let me know what you need from me to make this happen. Thanks!

Sean

[properchopper]

Hey Tony,

Are you running it in an OS lower unit?

Mr Flynn,
I would like to get the REK coupler with two of your flex cables to use in my OS lower unit. Please let me know what you need from me to make this happen. Thanks!

Sean

Sean, yes I am; the one I got from Mike L. In fact it's holding up just fine with a (play) 9XL in my heavyish 30" Herb Stewart hull.