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mCP X Brushless Mods Blade Micro CPx Brushless Mods and Conversions


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Old 06-27-2011, 02:37 PM   #101 (permalink)
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I did it from where the boom goes in at right at the hole

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Old 06-27-2011, 02:54 PM   #102 (permalink)
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I took the stock boom length and added 20mm to it.

Exposed - 4 13/16 inches ......123mm
End to end - 5 6/8" ....... 143mm
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Old 06-27-2011, 03:13 PM   #103 (permalink)
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Quote:
Originally Posted by adroc3905 View Post
I took the stock boom length and added 20mm to it.

Exposed - 4 13/16 inches ......123mm
End to end - 5 6/8" ....... 143mm
I have a lil more exposed but with the tail mount it makes it 6inches


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Old 06-28-2011, 01:09 PM   #104 (permalink)
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Default Brushless success

Thanks, TNT I followed your installation from the first post, had to trim the frame a bit to get the motor positioned right, installed the 2.2k resistor, cut off the giant plug and socket between the motor and esc once I determined I had the roration correct and soldered the leads, covered with heatshrink, and it flew!!!
I was able to do continuous flips with no blowout. Boy, am I pleased.
Thanks again,

Herman
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Old 06-28-2011, 01:29 PM   #105 (permalink)
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Quote:
Originally Posted by n2wizard View Post
Thanks, TNT I followed your installation from the first post, had to trim the frame a bit to get the motor positioned right, installed the 2.2k resistor, cut off the giant plug and socket between the motor and esc once I determined I had the roration correct and soldered the leads, covered with heatshrink, and it flew!!!
I was able to do continuous flips with no blowout. Boy, am I pleased.
Thanks again,

Herman
I am glad to hear that :-) and you are weclome. Are you using the the sr120 tail motor also.

Man and you say you are 83 and you throwing that mcpx around you are the man :-)

Have a blessed week.

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Old 06-28-2011, 07:36 PM   #106 (permalink)
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I finished my conversion today and all I can say is wow!!!! Lots of power love it.....tail still blows every once and again if to hard on the sticks but I still have the stock motor on the tail. I haven't put the resistor on yet though still have to go get one but this set up seems to work well what exactly is the resistor for?
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Old 06-28-2011, 07:47 PM   #107 (permalink)
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It needs to be a pull down resistor so the Steve converter will have more noise margin. It may give better throttle response as well. Some mCP X main boards and the Steve combo may not work right without the resistor.

Good luck, Don

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I finished my conversion today and all I can say is wow!!!! Lots of power love it.....tail still blows every once and again if to hard on the sticks but I still have the stock motor on the tail. I haven't put the resistor on yet though still have to go get one but this set up seems to work well what exactly is the resistor for?
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Old 06-28-2011, 07:55 PM   #108 (permalink)
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Originally Posted by dbennettya View Post
It needs to be a pull down resistor so the Steve converter will have more noise margin. It may give better throttle response as well. Some mCP X main boards and the Steve combo may not work right without the resistor.

Good luck, Don
Yeah, about that.... I am still without the resistor, and I just realized my throttle is pretty much a on/off deal. So looks like some more soldering may be in order... eh maybe not for a while, having too much fun flying with the new brushless power.
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Old 06-28-2011, 07:55 PM   #109 (permalink)
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It would be nice to get some RPM and thrust data for the various combos and pinions. I'll start with my numbers with the following:

ADH50 motor w/ 1mm shaft and 7T pinion, AeoRC 5A esc, the Steve converter and Turnigy 300mah 35C batteries. AUW 48.7 grams.

0* pitch 75% throttle ~ 4700 RPM
12* pitch 100% throttle ~ 4200 RPM
109 grams peak thrust at 12* pitch 100% throttle
100 grams steady state at 12* pitch 100% throttle

I'm really happy with these numbers at 2.24 thrust to weight ratio.

Don
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Old 06-28-2011, 08:00 PM   #110 (permalink)
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You could just use a 1/8 Watt leaded resistor and bend one lead back against the resistor (insulate the lead) then cut the leads so they are the same length as the pins on the header. Then just plug the resistor into the motor socket. No soldering required. Or just solder the resistor across the header.

Good Luck, Don


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Yeah, about that.... I am still without the resistor, and I just realized my throttle is pretty much a on/off deal. So looks like some more soldering may be in order... eh maybe not for a while, having too much fun flying with the new brushless power.
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Old 06-29-2011, 07:21 PM   #111 (permalink)
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OK well I had like 3 flights that went well without the resistor installed after that I started having problems. The motor would turn for a sec with throttle input and then just stop. Now I have had this problem with walkera ESC's before so I was about to change the ESC and put on the resistor at the same time. Then I thought maybe I just need the resistor? So, anyway long story short I installed the resistor today and all seems to be working great! Tail still blows out alot but I am going to stop by the LHS tomorrow and grab an SR120 tail kit. Hopefully that will solve the problem.

Thanks to all who have posted in this thread you have all been a huge help!

Good luck and happy flying!
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Old 07-01-2011, 08:16 AM   #112 (permalink)
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I hope someone can help me over here in the Netherlands.

I have ordered the same stuff as TNT.

I connect the power red and black from the ESC to the board.
I connect the STEVE Convertor blue to the black ESC
I connect the STEVE convertor red to the red ESC
I connect the STEVE Convertor white to the white ESC

The yellow from the STEVE Convertor directly to the board.

But it doesn't work?

When I power up I hear from the motor beep-beep-BEEP.
But it don't react on the throttle input.

When I power up ful throttle and after initialising power down, sometimes
the motor starts to spin. But don't react to throttle input.

I double checkt the connection soldering points and all seems well.

What can it be???

Grtz.
Olaf
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Old 07-01-2011, 08:22 AM   #113 (permalink)
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Quote:
Originally Posted by OvdP View Post
I hope someone can help me over here in the Netherlands.

I have ordered the same stuff as TNT.

I connect the power red and black from the ESC to the board.
I connect the STEVE Convertor blue to the black ESC
I connect the STEVE convertor red to the red ESC
I connect the STEVE Convertor white to the white ESC

The yellow from the STEVE Convertor directly to the board.

But it doesn't work?

When I power up I hear from the motor beep-beep-BEEP.
But it don't react on the throttle input.

When I power up ful throttle and after initialising power down, sometimes
the motor starts to spin. But don't react to throttle input.

I double checkt the connection soldering points and all seems well.

What can it be???

Grtz.
Olaf
If you are positive everything is hooked up correclty I would try another ESC. I have had the walkera ESC's go bad on me before and they have had the same symptoms that you are describing.

Good luck!
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Old 07-01-2011, 08:28 AM   #114 (permalink)
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@ Nytflyer,

I think that everything is correct, but here is no one to check...
I will look for a different ESC. Not funny now I have to wait for
a new ESC with no guarantee that it will work....



I have read somewhere that the wires from the STEVE Convertor can be
wrong connected. Is there a way to check for this?

Grtz.
Olaf
Netherlands.
Finaly the weather clears up, but the chopper is down....

So sad
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Old 07-01-2011, 08:34 AM   #115 (permalink)
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Quote:
Originally Posted by OvdP View Post
@ Nytflyer,

I think that everything is correct, but here is no one to check...
I will look for a different ESC. Not funny now I have to wait for
a new ESC with no guarantee that it will work....



I have read somewhere that the wires from the STEVE Convertor can be
wrong connected. Is there a way to check for this?

Grtz.
Olaf
Netherlands.
Finaly the weather clears up, but the chopper is down....

So sad
Also, you have the yellow wire of thesteve right on the board? Or is it hooked up at the main motor plug? I had mine hooked to the main motor plug and it did exactly what you are describing untill I added the resistor.

So, if you have it hooked to the main motor plug and no resistor that could be your problem.

Good luck!
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Old 07-01-2011, 08:38 AM   #116 (permalink)
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@ Nytflyer,

I have it directly on the board.

Before i had it on + from the motor with the same reaction.
Therefore I connected it to the main board directly.
Sadly with the same results...

I don't have a resistor to check it.







grtz.
Olaf
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Old 07-01-2011, 10:33 AM   #117 (permalink)
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Quote:
Originally Posted by OvdP View Post
I hope someone can help me over here in the Netherlands.

I have ordered the same stuff as TNT.

I connect the power red and black from the ESC to the board.
I connect the STEVE Convertor blue to the black ESC
I connect the STEVE convertor red to the red ESC
I connect the STEVE Convertor white to the white ESC

The yellow from the STEVE Convertor directly to the board.

But it doesn't work?

When I power up I hear from the motor beep-beep-BEEP.
But it don't react on the throttle input.

When I power up ful throttle and after initialising power down, sometimes
the motor starts to spin. But don't react to throttle input.

I double checkt the connection soldering points and all seems well.

What can it be???

Grtz.
Olaf
I had the same exact issue and I stated the problem, symptoms and solution on posts #54 and #58.

Don't connect the steve red and blue wires to the red + black esc wires....connect them directly to the pos + neg of the board. For some reason the helimax esc's (certain ones I guess) are not putting out a good enough current to power the steve converter. Some people have success, others do not. Your symptoms sound exactly like what mine was doing before I directly solder the converter red + blue wires directly to the battery +/- terminals. The white on the converter stays with the esc. Yellow to the magic spot.
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Old 07-01-2011, 11:59 AM   #118 (permalink)
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@ adroc3905,

I have make the changes as you described and it works.

GREAT thank you very much...

I have read the entire thread but somehow mist it ?

Next thing is that the C.O.Q. is to much forward.
So I must do the tail update for some weight ad the back...
And the tail blow out way to much now.
But for now I'm back in the air without bogging =)

Thanks you all.
I'm every time supprised of the know how on these forums.

grtz.
Olaf
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Old 07-01-2011, 12:02 PM   #119 (permalink)
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Happy to hear your up and flying.
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Old 07-01-2011, 12:06 PM   #120 (permalink)
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Quote:
Originally Posted by adroc3905 View Post
Happy to hear your up and flying.
+1 Congrats! You will love it once you upgrade the tail!
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