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Other › Got the BL Main and ESC, now what?
11-29-2007 03:41 AM  9 years agoPost 1
BOB WHO?

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Downey, Ca.

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I just received a Feigao 1308422S brushless motor and a T-Bird 18 ESC from BP Hobbies. I also got some bullet connectors (various sizes). Could someone brief me on how to connect this stuff neatly and safely? I have an ar6100 receiver DD gws tail w/separate 7A ESC. I figured I might avoid problems by getting advice from the experts here. I use JST connectors at all regular locations now and would like to keep as many of these as possible. Thanks!

Bob

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11-29-2007 04:54 AM  9 years agoPost 2
tutelar-rc

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Nobleton, Ontario - Canada

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For a really good "how to" for the wiring required, go here:

[http://www.helihobby.com/html/separate_electronics.html]

For some ideas for placement, go
here Tutelar-RC's Noses& Tails or here Stuffy Noses

Post back with any questions...

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11-29-2007 05:43 AM  9 years agoPost 3
BOB WHO?

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Downey, Ca.

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Thanks tutelar
I can't see that these set-ups have an easy disconnect for the main motor. How do you safely check blade pitch with the main motor connected?

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11-29-2007 05:55 AM  9 years agoPost 4
Micro-Maniac

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Pasco,Washington Formerly: Captain Chaos

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Use throttle-hold and a mix on the rudder to disable the motors

I'd recommend against keeping the JST plugs - They are very marginal for this stuff and could easily cost you a battery and/or electronics if one gets too warm and melts/shorts etc - Happened to a friend of mine - I use micro deans like in the helihobby guide above - That's the first thing I do is snip JSTs off

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11-29-2007 03:49 PM  9 years agoPost 5
BOB WHO?

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Downey, Ca.

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I don't know how to use a mix on the rudder to disconnect the tail(dx7). When I use the throttle hold, the blades pitch negative. I don't know why they do so I'm confused. So how would one get and accurate reading of pitch in normal flight mode with the throttle hold on? Then on stunt mode?

Could I use a Deans 3 pin connector bteween the esc and motor as a diaconnect?

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11-29-2007 04:02 PM  9 years agoPost 6
Micro-Maniac

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Pasco,Washington Formerly: Captain Chaos

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Each mode has it's own adjustable throttle and pitch curves - Throttle-hold likely gives negative pitch because your stick is in the low position - Move the stick to center where the HOLD pitch curve value is 50 to setup the head - While viewing a throttle or pitch curve the IN & OUT will tell you where the stick is and what value it's producing
(IN 50 OUT 50 means the stick is centered and the pitch range is centered e.g.,0-25-50-75-100)
(IN 50 OUT 75 means the stick is centered but the pitch is at 3/4 range e.g.,0-40-75-90-100)

You'll want to keep most or all of your pitch curves linear e.g.,0-25-50-75-100

Here's my mix to initiate and disable the tail
system Menu:
[INPUT SELECT]
AUX2 GEAR
AUX2 GEAR
 
Function Menu:
[PROG.MIX2]
AUX2-> RUDD
RATE: 0%
-100%
SW:HOLD
OFFSET: 0
The AUX 2 switch in the 0 position and the HOLD switch in the 1 position will disable both motors - If the AUX 2 switch is in the 1 position HOLD will only disable the main motor

(BTW The rudder channel needs reversed (REV.) in the radio)

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11-29-2007 06:49 PM  9 years agoPost 7
BOB WHO?

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Downey, Ca.

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Thanks Micro.

I believe I set my dx7 per your set-up. I know I changed the swash-mix in the pitch mode to get approx 22 degrees of difference between +&- in stunt mode(s). I'll check the function menu and see if I have PROG MIX 2 like yours. But I just disconnected the main motor to see what the throttle hold does(to the pitch) in all flight modes. As soon as I hit throttle hold(in normal mode) with the stick at the lowest point, the blades pitch to negative 11 degrees. When I switch to stunt 1&2 the pitch stays the same in all stick positions. The pitch at low stick in normal mode is -5 and +12 at high stick. So I'm trying to figure out why the throttle hold pitches the blades like it does(in normal mode). I know it sounds like a dumb question, but it's obvious I don't know the radio well enough yet. I appreciate your comments.

Bob

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11-29-2007 07:16 PM  9 years agoPost 8
Micro-Maniac

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Pasco,Washington Formerly: Captain Chaos

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Because there are 4 modes - Norm, IdleUp1, IdleUp2, & Hold - Each have their own throttle and pitch curves which is why you want to set most of them the same (preferably linear 0-50-100) - Hold only has a 1 point throttle curve but a 5 point pitch curve just like the other 3 modes - 0=full negative pitch 50=neutral pitch & 100=full positive pitch so in Hold low stick with a low point value of 0 is going to be full negative pitch - In Norm at low stick with a low point value of 25 is only going to be half of negative pitch so if you switch between norm and hold with the stick low it's going to change the pitch by 25 curve points

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11-29-2007 07:29 PM  9 years agoPost 9
tutelar-rc

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Nobleton, Ontario - Canada

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I make my Throttle Hold pitch curve the same as the Normal pitch curve so there is no change in pitch when I switch off Throttle Hold to start
(not that it really matters, since the motor is not turning - I just do not like seeing the pitch jump)

To check full negative pitch, I temporarily change the Throttle Hold pitch curve to match the Idle 1 or 2 pitch curve (mine are the same).

Then, Throttle Hold keeps the motors off while I play with the sticks to see what pitch I have ==> both + and -.

Did that make sense?
(If not, I will detail it with some programming screens)

BTW: I don't see any reason why you can't have a connector between the ESC and BL motor. I used to have that. Note that you only need to disconnect 1 of the 3 wires to prevent the motor from running.

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11-30-2007 04:16 AM  9 years agoPost 10
BOB WHO?

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Downey, Ca.

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Thank you Micro and tutelar.

I'm afraid you're talking to someone(me) who is not fully comprehending this clear and helpful advice. I apologize for my ignorance in this area. I was trying to follow your mix on how to disable the tail, Micro, and I've just spent about an hour attempting to duplicate your 'Program mix 2'. I cannot seem to change the 2nd value for RATE which you have at -100%. I just cannot figure out how to adjust that 2nd line. I can only adjust the 1st line. Sooooooooo frustrating! This seems to be the only area in my little world that I feel like an idiot. Can I assume that this process of changing the 'Prog mix 2'(to disable the tail) is temporary? And when you are done doing whatever you did with the tail motor disabled, you would then return the mix to whatever it was? I did change my throttle hold pitch curve to match normal pitch curve rather than stunt 1 or 2. I hate to keep asking you guys dumb questions but I really like this hobby and I just don't get this radio yet. So does someone mind telling me how to adjust the 2nd line (value) for RATE in 'Prog mix 2'? I feel like I'm going backwards here because I want to install the new motor and esc, but feel I need to be able to disable the motors and would rather do it with the radio than a connector. Any advice on how to learn this radio besides the other questions I asked will be appreciated too. Thanks!

Bob

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11-30-2007 04:21 AM  9 years agoPost 11
Micro-Maniac

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Pasco,Washington Formerly: Captain Chaos

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You toggle the switches to adjust the values for each position

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11-30-2007 05:00 AM  9 years agoPost 12
BOB WHO?

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Downey, Ca.

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This must sound ridiculous but when I hit the 'select' button I can't seem to get the arrow to stop on the 2nd value (2nd line) after 'RATE:'. I can change everything in that mix except that. What am I missing?

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11-30-2007 05:21 AM  9 years agoPost 13
Micro-Maniac

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Pasco,Washington Formerly: Captain Chaos

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Put the Hold switch in the 1 position then get the arrow in front of one of the rate values then toggle the AUX2 switch to move the arrow to the other value

Don't worry it confused me at first too and this is a bit more complicated mix than it needs to be but it gives more/better control

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11-30-2007 03:29 PM  9 years agoPost 14
tutelar-rc

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Nobleton, Ontario - Canada

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Bob: I went throught exactly the same frustrations. The DX7 can do so much, but how?

The manual explains how to change values on different parameters, but does not explain why the parameter is used. Just like the heli, it will come with some assistance/support from others - and a bunch of trial and error!

Let us know if you have it sorted out. If not, I will do a quick video...

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12-01-2007 12:05 AM  9 years agoPost 15
BOB WHO?

rrKey Veteran

Downey, Ca.

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Thank you Micro and tutelar.

You guys are generous and patient. Those of us who fly micros (especially BCPPs)are in an obscure corner of our hobby to begin with. Then add separates and a good radio and try to figure out how everything works together, or ask the guy at your LHS. He doesn't know and you can't sort it out. If it were not for guys like you Gentlemen and a few others, I for one, would not have continued in the hobby.

Anyway, I figured out why I could not adjust the 2nd value for RATE in Prog. mix 2. I had left the OFFSET at -125. Now I think I have enough info to install the BL motor with a little bit more confidence. I'll probably have more questions soon and let you know how it went. Thanks!

Bob

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12-01-2007 12:40 AM  9 years agoPost 16
tutelar-rc

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Nobleton, Ontario - Canada

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Good to know that you are moving forward...

Let us know how it works out (pictures are always nice), or if you have further questions.

This is definitely a give-and-take forum. I know that I would not be as far along if not for the help from lots of people on RunRyder.

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12-03-2007 06:13 AM  9 years agoPost 17
BOB WHO?

rrKey Veteran

Downey, Ca.

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WOW!!!

I installed the BL motor in the BCPP this weekend. I did not have the time to really go out and fly it but I trimmed it out and adjusted the pitch in my backyard(4 batteries). It has even more power than I hoped. It made a significant difference. For those of you that have only the stock main motor like I've had, I would compare the difference between stock and brushless to the difference between a 6 cylinder Toyota Camry and a Porche Turbo Carrera. There's not alot to compare. It's a different class of heli. But I'm glad I started on the stock model. It would not have been a good trainer for me. Too much power. Can't wait to really give it a test. I'll report back.

Bob

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12-03-2007 03:24 PM  9 years agoPost 18
tutelar-rc

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Nobleton, Ontario - Canada

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Good to hear!

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