a heli outrunner motor for a genesis cat?!! did i miss a memo??

[limitedr1]

Doby! Dude it was your video! That's freakin awesome lol. I just went and found it again and yea there you were. What mount are you using?

Gator- heck yeah man hang out. Didn't consider it a thread jack at all. I am wondering the same about the bearing myself. Really considering doing this change over. Thanks for the pic to btw.

Yamaha-i'm assuming you have one of these said bearing for your outrunner....could we trouble you for a pic of your mount?

Rum-thanks so much for the info and knowledge here man.gonna check that vid for sure.

[stadiumyamaha]

Sure, I'll snap one for you tomorrow. I imagine ose sells them but if not kintec does. You need the bearing and the bushing and the bushings come in a couple of different widths depending on the shaft length.
If you end up going that direction I've been thinking about putting a nib castle 3424 1800kv up sale. They don't make them any more and they are bad ass.

[battlefury]

you can see a thrust bearing fitted here

ThrustBearing-DaBoat.jpg

[MassiveOverkill]

So help me out here. If a flex drive shrinks as it gets put under load, wouldn't the collet be pulled away from the thrust bearing while running? My brushless motor has a small flat washer at the back that makes sure the endbell only contacts the inner race of the rear bearing.

[RCboatfan2010]

Is a thrust bearing absolutely needed? I've just installed a H3126 in my BJ26 and it does not have a thrust bearing.
Are there any photos of ''what went wrong'' if you don't use it?

[martin]

The flex in its self winds up & shortens but the hole lot ie stub,flex,coupling,motor shaft is pushed foward from the prop push.

[MassiveOverkill]

OK, that makes sense.

Martin, I've seen your work on the OffShore Warrior, I'd love to see some more pics in your thread. I've followed suit with my Super Mono X (Offshore Warrior plastic version) with the Octora .130 flex. Did you fit a thrust bearing to your Warrior?

[martin]

I didnt use a thrust bearing because of difficulty getting them in the very tight space on small boats & small outrunner shafts at only 1/8" diam shaft.On small 450 size outrunners their not that powerfull & using small props theirs not the load being put on them like some of the larger motors like the T600 which has a lot of power & torque & swings large props.When you put this load on an outrunner the only thing holding the shaft & can in the motor is the small circlip thats on the shaft, these circlips can be pushed off or even split with the load being pushed against them & all the load is also being put on the front ball bearing or ball bearings as some outrunners have 2 bearings back to back to take more load.In a helicopter theirs no end load on the motor like their is in a boat as their driving a gear with only side load.

[MassiveOverkill]

Thanks, so I'm OK with my micro 17" then. Now where are those pictures?

[siberianhusky]

Been seriously considering giving an outrunner a try on my tunnel hull for fun running, they sound neat and being out in the wind it should cool ok.
Hoping to save wear and tear on the pricier ul-1 racing motors, not as many of those appearing on the swap anymore!

[lackabucks1]

Running my old GP Wildcat with two 3600 kv helicoptr motors. Being cheap, I put washers between prop and stuffing tube to take load off motor bearings. So far - so good, and goes like a scalded cat. Unfortunately, hull wasn'tdesigned for these speeds, and becomes uncontrollable, so I've had to dial throttle down.

[MassiveOverkill]

Running my old GP Wildcat with two 3600 kv helicoptr motors. Being cheap, I put washers between prop and stuffing tube to take load off motor bearings. So far - so good, and goes like a scalded cat. Unfortunately, hull wasn'tdesigned for these speeds, and becomes uncontrollable, so I've had to dial throttle down.

Does that help prevent water ingress at all as an added benefit?

[MassiveOverkill]

Is a thrust bearing absolutely needed? I've just installed a H3126 in my BJ26 and it does not have a thrust bearing.
Are there any photos of ''what went wrong'' if you don't use it?

[stadiumyamaha]

Thrust bearing and bushing on a outrunner. The bushing can go on either side of the bearing as long as its as large as the od of the motor end bearing.

[martin]

The problem you can get with taking the thrust with the dog against the end of the strut is unless the gap left for wind up or shrinkage of the flex is right you can get a flex to break if the dog touches the strut be for the flex is at full wind up, again if the gap is to big you dont have the dog contact the strut washer & the load is then put on the motor.If you use a thrust bearing as pictured above its allways going to be better when using an outrunner ecspecially larger more powerfull motors.