Extreme Flight Owners Thread

[AKfreak]

Do you know if the Motorfly DM-4320 mount fits the blind nuts in the firewall of the MXS, Do I need standoffs? Also since the previous motor in the plane was the Torque - 4016T/500, do you think I will need to remount the cowl to fit the Motorfly correctly? ? Lastly I see the Motor Fly motor is listed at 380g and the Torque is 292 gr grams. As I progress as a builder (especially in F3P) I have come to learn that weight is critical. You might have enough power to make anything fly, but you cant make a heavy plane flight light, does that make sense?

The power listed on the 4320 is very nice, any of the other guys here use that setup on a 62" MXS. I would love to see some video if possible. Sorry for all the questions, and thanks for your time. @ bryansifsof44 thanks, AKf

 

[skibum44]

Do you know if the Motorfly DM-4320 mount fits the blind nuts in the firewall of the MXS, Do I need standoffs? Also since the previous motor in the plane was the Torque - 4016T/500, do you think I will need to remount the cowl to fit the Motorfly correctly? ? Lastly I see the Motor Fly motor is listed at 380g and the Torque is 292 gr grams. As I progress as a builder (especially in F3P) I have come to learn that weight is critical. You might have enough power to make anything fly, but you cant make a heavy plane flight light, does that make sense?

The power listed on the 4320 is very nice, any of the other guys here use that setup on a 62" MXS. I would love to see some video if possible. Sorry for all the questions, and thanks for your time. @ bryansifsof44 thanks, AKf

You want the 4315-480 or 500 which has a base weight of 280g. But wind will depend on what prop you ant to spin. 16x7~8 on the 480kV and 15x7~8 on the 500kV. The bolt spacing lines right up but the Torque is longer, however if you space the motor right you shouldn't need to move cowl. I used 1/4" spacers on the MXS to get the correct spacing, but I have never run the Torque so I don't know what the correct spinner gab, but I assume 1/4-1/2". Easy to do though, when you get your motor home depot or lowes has the little nylon spacers that will work. If you want to grab a head of time Ken would probably reply pretty quick with a dimension. Also, make sure you get the lightened motor. The lightened motor saves you nearly a ounce and allows for great cooling. I prefer the composite X-mount and haven't had any issues with it. My preference is the 480kV motor as I prefer big props. It gives me a good combination of post-stall performance, speed and pullout. Power is great at over 1700W peak. Motor has a reputation for being a cool running mamajamma

I didn't get any video with my MXS, but here is the 4315-480 with a Xoar 16x8PJN on the 60" Extra.
[video=youtube;bmXscExYU2A]http://www.youtube.com/watch?v=bmXscExYU2A&list=UUKvsklkBy5Gd4azjv6GfyCA[/video]
[video=youtube;7JCLooW9Le4]http://www.youtube.com/watch?v=7JCLooW9Le4&list=UUKvsklkBy5Gd4azjv6GfyCA[/video]

 

[AKfreak]

You want the 4315-480 or 500 which has a base weight of 280g. But wind will depend on what prop you ant to spin. 16x7~8 on the 480kV and 15x7~8 on the 500kV. The bolt spacing lines right up but the Torque is longer, however if you space the motor right you shouldn't need to move cowl. I used 1/4" spacers on the MXS to get the correct spacing, but I have never run the Torque so I don't know what the correct spinner gab, but I assume 1/4-1/2". Easy to do though, when you get your motor home depot or lowes has the little nylon spacers that will work. If you want to grab a head of time Ken would probably reply pretty quick with a dimension. Also, make sure you get the lightened motor. The lightened motor saves you nearly a ounce and allows for great cooling. I prefer the composite X-mount and haven't had any issues with it. My preference is the 480kV motor as I prefer big props. It gives me a good combination of post-stall performance, speed and pullout. Power is great at over 1700W peak. Motor has a reputation for being a cool running mamajamma

I didn't get any video with my MXS, but here is the 4315-480 with a Xoar 16x8PJN on the 60" Extra.
[video=youtube;bmXscExYU2A]http://www.youtube.com/watch?v=bmXscExYU2A&list=UUKvsklkBy5Gd4azjv6GfyCA[/video]
[video=youtube;7JCLooW9Le4]http://www.youtube.com/watch?v=7JCLooW9Le4&list=UUKvsklkBy5Gd4azjv6GfyCA[/video]

This is Perfect Information, thanks so much. Last question, will the ZTW Gecko 85 (not HV) ESC be enough for the 480KV with bigger prop setup?

 

[YellowJacketsRC]

85 esc is enough.

 

[YellowJacketsRC]

Motrofly is a great motor. If you do need to remount the cowl, just CA a tooth pick into the mounting holes on the fuse and snip them flush. Then red rill holes were needed.

Chris Hinson gave me the best solution for setting the gap between the pinned and the cowl that I have ever seen. Take some double sided foam tape and and stick it on the back side of the spinner. Slide the cowl into place, then mount the spinner back plate onto the motor and bolt it up snug. The carefully pull the cowl up and stick it to the tape so that it lines up perfectly. Then drill your holes, remove tape and you end up with a perfect 1/8" gap.

 

[dth7]

Motrofly is a great motor. If you do need to remount the cowl, just CA a tooth pick into the mounting holes on the fuse and snip them flush. Then red rill holes were needed.

Chris Hinson gave me the best solution for setting the gap between the pinned and the cowl that I have ever seen. Take some double sided foam tape and and stick it on the back side of the spinner. Slide the cowl into place, then mount the spinner back plate onto the motor and bolt it up snug. The carefully pull the cowl up and stick it to the tape so that it lines up perfectly. Then drill your holes, remove tape and you end up with a perfect 1/8" gap.

So simple but why didn't I think of it? That's perfect. Chris Hinson- "super genious"! Thanks for sharing. I don't think I've seen that tip shared anywhere.

 

[AKfreak]

Yeah I saw his build vids, he seems to of done that a few times..

 

[AKfreak]

I am searchng for servos that I can afford. I am a big fan of Savox and ran across the Savox SV-0220MG
Here are the specs.

Dimensions(mm): 40.7X20.2X37.0
Weight(g): 59.0
Speed(@6.0V sec/60): .16
Torque(@6.0V oz-in): 90.3
Speed(@7.4V sec/60): .13
Torque(@7.4V oz-in): 111.1
Gear: Metal
Bearing: 1BB
Case: Plastic
25 Tooth Spline


The are slightly bigger then a HS-7245MH Servo, but only by a little. The speed is a little less, but the price seems good for a metal geared servo. Have any of you guys used a Savox SV-0220MG?

 

[gyro]

I am searchng for servos that I can afford. I am a big fan of Savox and ran across the Savox SV-0220MG
Here are the specs.

Dimensions(mm): 40.7X20.2X37.0
Weight(g): 59.0
Speed(@6.0V sec/60): .16
Torque(@6.0V oz-in): 90.3
Speed(@7.4V sec/60): .13
Torque(@7.4V oz-in): 111.1
Gear: Metal
Bearing: 1BB
Case: Plastic
25 Tooth Spline


The are slightly bigger then a HS-7245MH Servo, but only by a little. The speed is a little less, but the price seems good for a metal geared servo. Have any of you guys used a Savox SV-0220MG?

I use this servo as a throttle servo on my HV gas airplanes, it works great for that.

However, it is definitely too big for the 60" birds as it's a standard size servo. Believe it or not, "a little" makes a big difference in CG on these small birds. The weight difference is about 25g each, so when you think about it, its like putting 3 1/2 HS-7245MH servos on your tail instead of 2.

If the HS-7245MG is too much $$, take a look at a HS-5245 or HS-225MG. Plenty of people use them with success, and the only difference is they may not last as long as a 7245, and will have a less speed/torque... But again, fully functional.

 

[Enterprise]

They are standard size servos. They won't fit in the 64. I had trouble getting in the BK servos. There is not enough meat to install that size.

I have tried a few alternative mini servos and there really is no decent alternative to 7245s, especially at the power levels you way to fly.