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mCP X Brushless Mods Blade Micro CPx Brushless Mods and Conversions |
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05-09-2011, 03:06 AM | #21 (permalink) |
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Join Date: Dec 2008
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Will the 120 SR tail blade (only) fit onto the MCP x?
And will it bring any benefit over stock, without replacing the motor? |
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05-09-2011, 07:04 AM | #22 (permalink) | |
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Join Date: Jan 2009
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Quote:
It's weight is too high to be a real winner with stock motor configuration, so one better might do that with BL main motor (still wainting für mine ). All you'd have to do is to dismount the 120SR's motor including the holder from it's boom - rewire (wires too are heavy on 120's tail) and fix that 3mm slot on the 2mm carbon rod from mCPX (either with EPO or - my favorite - using a little screw). HTH Uli |
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05-09-2011, 10:22 AM | #23 (permalink) |
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Join Date: Mar 2010
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The ID of the tail blade is larger than the stock MCPX. it'll slip and I've tested it and found it does help BUT puts a strain on the motor
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ALIGN TREX 250SE 450SE V2 500ESP 550E 600ESP 700E NOVUS CP BLADE MSR BLADE SR 120 BLADE SR |
05-10-2011, 02:28 AM | #24 (permalink) |
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Join Date: Dec 2008
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Thanks guys. I don't want to replace the motor since I'm still a beginner and flight time is more important than acro for the time being.
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05-10-2011, 04:34 AM | #25 (permalink) |
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Join Date: May 2011
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Nice one
Ive seen a cnc swash and blade grips on horizonhobby.com part number- mhemcpx012.... Or a good cheap quick fix for a broken swash @ www.youtube/brados1221 |
05-12-2011, 09:19 PM | #26 (permalink) | |
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Join Date: May 2011
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Hi im new here to the Helifreak Forums and i cant thank you enough for this i just went through 2 tail booms before reading this and didnt want to spend the money when all i need is the carbon rod |
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05-18-2011, 10:59 AM | #27 (permalink) |
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Yeah this is great stuff! Good info
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"If you must choose between two evils....choose the one you haven't done before" |
05-18-2011, 01:33 PM | #28 (permalink) |
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Join Date: Apr 2011
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The tail boom fix is good to know but how do you reattach the tail motor wiring after pulling the wires through the boom?
I just happen to have CF tube which I used for my tail servo rod on my 450. |
05-18-2011, 03:48 PM | #29 (permalink) |
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Join Date: Mar 2010
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wrap it around the carbon rod
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ALIGN TREX 250SE 450SE V2 500ESP 550E 600ESP 700E NOVUS CP BLADE MSR BLADE SR 120 BLADE SR |
05-18-2011, 05:38 PM | #32 (permalink) | |
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Quote:
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05-18-2011, 05:53 PM | #33 (permalink) |
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Join Date: Mar 2011
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you all are over complicating it, bend it till it breaks and split the boom in half (lengthwise)...............
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05-18-2011, 06:28 PM | #35 (permalink) | |
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Join Date: Apr 2011
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I split it right down the crack, gluing was not an option because the tube split in several places. I wrapped the wire around the rod an it works better than before ( I extended the length by .25"). |
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05-18-2011, 06:37 PM | #36 (permalink) | |
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Join Date: Mar 2011
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Quote:
you all are over complicating it, bend it till it breaks and split the boom in half (lengthwise) |
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05-18-2011, 07:14 PM | #37 (permalink) |
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Join Date: Apr 2010
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No hurt feelings here. Just thought there was no need for the condescending attitude when responding to a question that you figured out the answer to while some may not have. I thought that's why we had this forum. To learn and help each other. At least that's why I signed up. Anyway, thanks for the answer.
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05-30-2011, 09:54 PM | #38 (permalink) |
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Join Date: Jun 2009
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Hey so-fly, thanks for the great info in this thread. I'm trying to troubleshoot a brushless conversion that I've been working on based on the original post, and I had a few questions:
- It looks like there's a surface mount LED on the brushless signal converter. Is it supposed to light up when the battery is plugged in, or when throttle is applied? My motor doesn't want to start up after soldering everything together, and I suspect that the problem might be the signal converter (the LED isn't lighting and I'm getting 0 volts on the three pins on the "ESC" end). - From your pictures, you have the "Battery|ESC" wires on the ESC connected to the motor, and the "Motor" wires hooked to the main board. Did you flip the label on the ESC or something? - It looks like you have the white wire from the ESC hooked up to the "S" pin on the signal converter, and the "+" and "-" pins aren't connected to anything and are left floating. Is this right? - You mentioned using the stock 8T pinion. Does this mean that you pulled the stock pinion off the MCPx and put it on the Novus CP motor? If so, how did you get it to fit (since the shaft on the brushless motor is a bit larger diameter)? Thanks a bunch, and thanks again for posting this stuff. |
06-17-2011, 12:31 AM | #39 (permalink) |
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Join Date: Jun 2009
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No bites? I thought there would have at least been one or two responses considering that this thread is stickied. Has anyone out there besides so-fly used the setup as described in the first post, either successfully or otherwise? What about just using the EA-048 brushed to brushless converter?
Here are a few follow-up comments to my last post. (Apologies in advance if I'm just being dense, its been a long time since my electrical engineering courses in college). - The wiring diagram is missing power going to the EA-048, and only shows signal in and signal out. - It looks like the brushless converter requires 5V +/- 10%, but the Heli-Max ESC doesn't have a 5V regulator. I tied mine to the battery, but that's going to be just outside of 10% of 5V. Maybe problematic, maybe not. - Once I got the brushless converter powered, I got no throttle response with what I thought was the correct polarity on the lead from the 3-in-1 board. Reversing the polarity on this lead caused the motor to spin up at zero throttle, but I got nothing as I moved the throttle higher. I've read that Heli-Max and Walkera output a pulse that is opposite in polarity from what EFlite uses, so this might be why I needed to reverse the polarity on the motor lead in my setup. - After playing around with endpoints and reversing on my TX I still couldn't quite get the motor to spin up in all but a very narrow range of throttle input, and it seemed to be a constant and fairly low speed. I've read that others have had trouble with the EA-048, and it sounds like people are having better luck with the combination of a thesteve converter and XP-7A ESC. I'm going to give the brushless conversion another shot with these components and will post here with the results. |
06-18-2011, 01:50 AM | #40 (permalink) | |
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Quote:
The negative input of the EA-048 converter must be connected to the hot pole of the motor connector. You need to reverse the throttle channel on your TX. Yes, you have a very narrow range of throttle input and, depending on the type of esc, the range of use could position itself in the first or second half of the adjustment range. You have to experiment. With motor connected, you should arm the esc, place the throttle stick to center and manually adjust the value of throttle channel to determine the limits. The gas channel is inverted, so you have to set the throttle hold value to 100% instead of 0% to stop the motor. When you connect the battery to the 3 in 1 the throttle channel must be at 0%, otherwise the helicopter does not arm. Your throttle curve presumably will be something like 6% to 36% or 56% to 86%, so the helicopter can not arm itself when you connect to the battery. You need to pull throttle hold and then release it to arm the helicopter. Just my 2 cents, hope it helps. P.S. The converter TheSteve is by far better for mCP X |
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