does anyone have problem with this coupler?

[lenny]

The one on mine clone hydro is like that,
I loosen the coupler and hold it from moving and twist the flex shaft with the prop on it to the right and pull.
Works pretty good for me.

[Diegoboy]

So if I just snug it down my problem will go away? No slipping under full throttle load?

yes.

Collets 3 pc
For 5mm, 6mm, 8mm electric motor shafts and .150 or .187 flex cable. With out question the best collet on the market. Three piece design for slip proof ultra secure grip by just snugging up the wrenches. High precision machined stainless steel with a brass insert. You can not strip or split this like the 2 piece units. Not only will this hold better it will increase the life of your flex shaft. The brass inserts are replaceable if you would ever wear it out so no need to buy the whole unit a second time. Made in USA

[osprey21]

Thanks - guess I'll get another insert (destroyed the last one) and try it again.

[BrianW]

I really like those MBP ones..

[battlefury]

These 3 piece collets are PITA to remove, eventually they will thin out the section of the cable where it being grip due to periodic maintainance like greasing. Octuras works well for me, period. further more, it's cheaper

[properchopper]

I prefer the two-piece Octura style. I had one experience with a three piece ( I guess I cranked down too hard on it) where I almost couldn't remove the cable. The three-piece may theoretically be a better design but finding the sweet spot between over & under tightening isn't something I want to mess with. The penalty for overtightening is a stuck cable; the penalty for undertightening is a slipping or lost cable & prop. I doubt that I have the finess (call me ham-fisted) to find that sweet spot, so it's two-piece for me. For those with the three piece, a little experimenting should make these work just fine.

[egneg]

I lost a prop and shaft with one - never again! I switched back to a 2 piece coupler. IMO they are much more reliable.

[Diegoboy]

I guess if you insist on cranking down on it, buy the old style Octura then. Nothing wrong with that. Don't knock a product because YOU fail to use it properly

ex: these castle hydra esc's are a PITA, they wont turn my traxxas titan 550 motor at all, plus they have this extra motor wire. what's that for?

[properchopper]

I guess if you insist on cranking down on it, buy the old style Octura then. Nothing wrong with that. Don't knock a product because YOU fail to use it properly

Danny, I agree; I admit I "failed to use it properly" but I'm not knocking the three piece - it just needs a little more finess than I'm capable of. I use the Octura 2 piece with anti-sieze on the threads ( a tip from Jay) and haven't lost a prop. I put lots of work in my props so I'm sticking with what works for me. Like I said, the three piece should be a very good alternative when used properly.

[video200]

I use the Octura 2 piece with anti-sieze on the threads ( a tip from Jay) and haven't lost a prop.

whats "anti-seize" ?

[properchopper]

DSC02845.JPG

whats "anti-seize" ?

Anti-Seize (auto parts stores have it) acts as a thread lubricant and allows consistant torque to be applied while tightening, eliminating false "tights" associated with minute machining flaws on the threads.

[video200]

thank you Tony :)

[JIM MARCUM]

Glad I read this thread! I've used the tap & pull method with good results. Now I know NOT to over tighten the 3 piece coupling. I had lost the entire flex drive, prop shaft & prop on my gasser cats/hydros (2 piece couplers) & thought I had to torque these the same way. I'll back off on the torque now. Life is good. Thanks everyone. JIM

[MarkF]

The reason the octura one works better is because it's insert is made of spring steel. Brass will never flex back so I wonder why they thought they could use that kind of material for a coupler.
Mark

[detox]

Zippkits.com sells an all stainless steel version Super Collet (no brass) that some gas guys say works lots better. Here is their .150 all stainless version. Only $8.00 http://zippkits.com/~zippkits/index....roducts_id=327