PDA

View Full Version : Has anyone installed a OWB in maingear yet?


bigtim2001
08-04-2011, 04:27 PM
Just wondering if anyone has tried to install a one way bearing in the main gear yet ? And if so how were the results ?
:thinking

Mojappa
08-04-2011, 05:02 PM
Don't take this the wrong way but what would be the point? This small of a heli will never auto and stripped gears aren't very common.

CX2Pilot
08-04-2011, 05:38 PM
Yes, someone here put on a T-Rex 250 one way bearing and it worked.
There is a video of it. I don't know where this post was but maybe someone
else will know or the guy who did the mod may see your thread here.


Tom

Uncle Chop Chop
08-04-2011, 05:48 PM
Yes, someone here put on a T-Rex 250 one way bearing and it worked.
There is a video of it. I don't know where this post was but maybe someone
else will know or the guy who did the mod may see your thread here.


Tom
Either that or a Gaui 200 OWB. Apparently, autos can be achieved and spooling down gradually as opposed to stock's abrupt stop. I may try this when I go BL.

SYMAWD
08-04-2011, 07:56 PM
http://www.helifreak.com/showthread.php?t=310422

InFocus
08-04-2011, 08:14 PM
I'm very new and learning. So please feel free to correct my thinking on this.

It seems with the mCPX there is no need for doing an auto as just hitting the TH and letting it flutter to the grass does 0 damage in most cases.

But assuming you want to 'practice' autos for a move up to bigger heli's:

I thought doing an auto would not be possible since the tail motor is independent, and would be stopped.

On larger heli's, the tail rotor would still be moving in relation to the main rotor, so you'd still have some tail control.

Is that right?

Mojappa
08-04-2011, 08:21 PM
An auto is not possible because there isn't nearly enough mass or rotating inertia to do one on a heli this small. 450's are mucho tricky to do an actual auto with and 250's are harder still if not nearly impossible. This heli just doesn't weigh enough.

755 robert
08-04-2011, 08:35 PM
An auto is not possible because there isn't nearly enough mass or rotating inertia to do one on a heli this small. 450's are mucho tricky to do an actual auto with and 250's are harder still if not nearly impossible. This heli just doesn't weigh enough.
ALMOST impossible with a 250...
http://www.youtube.com/watch?v=E-tpV8U1mos

Mojappa
08-04-2011, 09:56 PM
That's why I said "nearly". ;)

755 robert
08-04-2011, 10:06 PM
I would say impossible for us mere mortals..When I hit TH my 250 it falls like a rock..:wow2:..Auto it?:rotf:rotf:rotf

Mojappa
08-04-2011, 10:17 PM
I'm sure it's not an easy task. Damn the laws of physics'

bigtim2001
08-06-2011, 07:33 AM
Don't take this the wrong way but what would be the point? This small of a heli will never auto and stripped gears aren't very common.
Hey Joe,
I don't want to do it for any other reason than to say it can be done. I have three of these little guys in various stages and thought it would be cool to watch the blades wind down rather than come to an abrubt stop. I know my time could be spent better else where as I read your posts and others about more practical mods that can be done, but hey were guys and thats what we do, by completely good working heli's tear em apart and try to make them better !! Btw how have you been I haven't posted for awile, except for this last one of course ??? also while we are on the shaft subject 8 or 9T pinion, which would you use ?

As always thanks,
Tim