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Old Jun 29, 2009, 12:55 PM
Airboatflyingshp is offline
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Now if they can make smaller versions - cheaper .......that would be very interesting.
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Old Jun 29, 2009, 04:15 PM
Eljimb0 is offline
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Hi Everybody,
....and best wishes to you all !!

Thanks Roy for publishing all your prop findings. The latest version of the MB is a heart stopper.
jimbo
Old Jun 29, 2009, 06:36 PM
Basingstoke Roy is offline
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Hi Jimbo
Hope you've settled in, & enjoying all that sun sea and surf
So doing an modelling in Hawaii

PS more TCM3 data below
Last edited by Basingstoke Roy; Jun 30, 2009 at 04:52 AM.
Old Jun 30, 2009, 12:34 PM
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Wow, MB5 looks gorgeous with 3 blade props!

Does the TCM3 motors data from the same flight? Contra props are not simple, I can see.

Thanks.

Satoru
Old Jun 30, 2009, 06:03 PM
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Thanks Satoru
Yes they were but as you can see the front prop is not working as hard as the rear. So a first for me I will be using more pitch on the front than the back, I can only put this down to the swirl increasing the effective AOA of the back blades.

I spoke to Chirstian Ramoser of Ramoser varioProps today & he pointed out that the blades I use have only a recommended max RPM of 8000, I'm pushing 9500 with no problems yet. Solid German engineering me thinks

Roy
Old Jun 30, 2009, 06:19 PM
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Quote:
Originally Posted by Basingstoke Roy
So a first for me I will be using more pitch on the front than the back, I can only put this down to the swirl increasing the effective AOA of the back blades.
Roy
Roy,
You go get them!

Hawaii is great!

Jimbo
Old Jun 30, 2009, 06:23 PM
Basingstoke Roy is offline
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Quote:
Originally Posted by Eljimb0

Hawaii is great!

Jimbo
You lucky
Old Jan 21, 2010, 09:56 AM
aband is offline
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Quote:
Originally Posted by Eljimb0 View Post
The drive shaft for the back rotor is inside the front rotors prop. I found a pair of opposite pitch props as a replacement part for one of those aero wanker birds with two motors. ONE cc phoenix 10 drives both motors.
Both motors start about 1/2 the time the other half one or the other starts only. It makes a wonderfull sound. I don't know how to read the prop rpm?
do I set the tach for 4 blades or 2. It rips all the way to WOT.
jimbo
you can use a laser RPM detector,get a decal which can reflect the laser light well,than paste it to the motor
Old Jan 22, 2010, 12:19 AM
GorillaBob is offline
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Or we have a tach that attaches to one of the motor wires and senses the feedback from the mags, just like the esc does and tells the rpm....
Old Mar 03, 2010, 01:37 AM
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Has anyone made one of these work with two different size motors with different kv?
Old Jul 27, 2010, 02:00 PM
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happy birthday Lez

I hope you are great!
Last edited by Eljimb0; Jan 26, 2011 at 07:19 PM.
Old Jan 05, 2011, 06:43 PM
Jetman123 is offline
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Wow, this thread has some beautiful contrarotating setups! Just curious where everyone is getting the copper and steel tubing used as well as a source for motor bearings? Working on a top secret project and don't have a pile of spare parts sitting around...
Old Jan 05, 2011, 08:07 PM
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Regarding the bearings, I used bearings that existed commonly, (RC-Car stuff and hacked out of computer do-dads) ...and backwards engineered everything. The aluminum and steel parts I made from bar stock.
Tell us about your project ....we can keep a secretl..
Old Jan 05, 2011, 09:07 PM
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Hows that rare bear going ?
Old Jan 06, 2011, 12:12 PM
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Quote:
Originally Posted by Eljimb0 View Post
Regarding the bearings, I used bearings that existed commonly, (RC-Car stuff and hacked out of computer do-dads) ...and backwards engineered everything. The aluminum and steel parts I made from bar stock.
Tell us about your project ....we can keep a secretl..
Oh no, not yet, this is a good one! I'm developing this with an eye for a patent, but I need to get the prototype built first. I promise I will let you use it when I am at the point full disclosure makes sense!


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