Shop our Airplanes Products Drone Products Sales
Thread Tools
Mar 15, 2017, 10:29 PM
Registered User
Quote:
Originally Posted by FootFungus
It has already been done. Check OsburnFPV's YT channel. He uses the RFX185 frame and BrotherHobby 1407 motors with 5" props. Total AUW(minus Lipo) was 173grams. If Op is running 21.5g motors and ran the same set-up as OsburnFPV, then his quad would be 197grams AUW (minus Lipo).
Yeah I'm curious how he got the 1407s to bolt up I didn't think they had the same bolt patterns as 1806 & 22xx motors if so I may try to get my hands on a set of them as well, everyone is raving about the Brotherhobby 1407s for smaller builds so I think they would work well. Since the 1804s won't bolt up I didn't think 1407s would either.
Sign up now
to remove ads between posts
Mar 16, 2017, 05:09 AM
Brisbane, Australia
Just guessing from the pics, it looks like the RFX160 arms will support 12 x 12mm and 12 x 16mm mounting options which includes 1306/1407/1804/1806. Likely the RFX185 arms have M3 holes at 19mm for 22XX motors.
Mar 16, 2017, 05:38 AM
Registered User
Quote:
Originally Posted by DMCfirestar500
Yeah I'm curious how he got the 1407s to bolt up I didn't think they had the same bolt patterns as 1806 & 22xx motors if so I may try to get my hands on a set of them as well, everyone is raving about the Brotherhobby 1407s for smaller builds so I think they would work well. Since the 1804s won't bolt up I didn't think 1407s would either.
He explains in the video how he did it. The arms have 3 holes at the end: 2 holes for the motors and 1 center hole. To attach the 1407 motors, you have to use the outer motor hole and the center hole of the arms. He explains that you have to file the center hole slightly, and then use spacers underneath your motor screws and lock tight the motor screw in place. Seems pretty easy.

I have all the parts ready minus the frame. I am still debating between 5" or 4" with these 1407s. OsburnFPV tested these motors during the winter. Of course, his 5" prop set-up will barely get warm. I am still not convinced these motors can handle 5" props during the summer time as some racers in RCGroups have stated that their 1407 motors come down warm already while pushing it using 4" props.
Mar 16, 2017, 05:41 AM
Registered User
Quote:
Originally Posted by Ian444
Just guessing from the pics, it looks like the RFX160 arms will support 12 x 12mm and 12 x 16mm mounting options which includes 1306/1407/1804/1806. Likely the RFX185 arms have M3 holes at 19mm for 22XX motors.
You will still have to modify the motor holes in the arms of the 160. Go to the RFX185 thread. A user named 'Centurion' has a 5" and 4" build using 1407 motors. Don't worry, the thread is not large and the posts I am talking about are on the last page of the thread.
Mar 16, 2017, 05:43 AM
Registered User
Quote:
Originally Posted by DMCfirestar500
Frames arrived today, getting closer.
Could you measure the distance between the inner screws that hold the arms together to the plates? I know the distance between the outer screws measure 30.5mmx30.5mm(Standard). I am wondering if you can use the inner screws to mount a 20mmx20mm stack?
Mar 16, 2017, 07:45 AM
Registered User
Quote:
Originally Posted by FootFungus
Could you measure the distance between the inner screws that hold the arms together to the plates? I know the distance between the outer screws measure 30.5mmx30.5mm(Standard). I am wondering if you can use the inner screws to mount a 20mmx20mm stack?
Yes I'll measure this evening after work. At first glance it looked close and I thought that was what those holes on the plates were for but its def for holding the arms on, hopefully they had enough foresight to also make them 20x20.
Mar 16, 2017, 08:01 AM
Registered User
Quote:
Originally Posted by fw190
A 200 gram 5" would be amazing, lowest I have is 290
Got a 150g 5 inch just waiting on FPV gear, little monster.

For all you guys looking for 1407 motors... a little birdie told me about some lightweight 1407s coming in at Rotorgeeks shortly
Mar 16, 2017, 08:42 AM
Registered User
Quote:
Originally Posted by Mugenski
Got a 150g 5 inch just waiting on FPV gear, little monster.

For all you guys looking for 1407 motors... a little birdie told me about some lightweight 1407s coming in at Rotorgeeks shortly
Awesome! I'll be on the lookout.
Mar 16, 2017, 05:01 PM
Registered User
Guys just bought coupole of these: http://www.gearbest.com/flight-contr...19.html?wid=21

20Amp Dshot. OSD on the FC... Seems pretty seat. A bit heavier than the XJB at 8g instead of 6.5g but worst it i think for the Dshot. I will actually use this on a micro 2.5" prop build and later on the RFX185 once i sort out all the parts. I believe it is the one out of the ARFUN 90.

Now need to wait for the VTX03 to come back to stock and i should have everything i need for the build.
Mar 16, 2017, 06:41 PM
(͡ ͜ʖ ͡)(͡ ͜ʖ ͡)(͡ ͜ʖ ͡)
JohnCC's Avatar

Mini Brushless F3 Flight Control System


Quote:
Originally Posted by transam2k4
Guys just bought coupole of these: http://www.gearbest.com/flight-contr...19.html?wid=21

20Amp Dshot. OSD on the FC... Seems pretty seat. A bit heavier than the XJB at 8g instead of 6.5g but worst it i think for the Dshot. I will actually use this on a micro 2.5" prop build and later on the RFX185 once i sort out all the parts. I believe it is the one out of the ARFUN 90.

Now need to wait for the VTX03 to come back to stock and i should have everything i need for the build.
Damn that's a small FC... 20amp 4n1 (͡ ͜ʖ ͡)
Mar 16, 2017, 10:11 PM
Registered User
Quote:
Originally Posted by FootFungus
Could you measure the distance between the inner screws that hold the arms together to the plates? I know the distance between the outer screws measure 30.5mmx30.5mm(Standard). I am wondering if you can use the inner screws to mount a 20mmx20mm stack?
Unfortunately the inner holes are 16x16mm so won't support a 20x20 stack. I am going to print a 30.5x30.5 to 20x20 adapter out of TPU (softmount) anyway for mounting and to help absorb some vibrations so not a deal breaker for me.
Last edited by DMCfirestar500; Mar 18, 2017 at 09:31 PM.
Mar 16, 2017, 10:52 PM
youtubeDOTcom/socalep1
Danq0's Avatar
I picked up the frame op was initially planning to use the RFX185. seen here in picture 2, w/out props and antenna I had it weighing around 250g because of heavy rs2205 motors.

https://www.rcgroups.com/forums/show...93&postcount=2

Whats amazing is the quad in pic 1 "the fuuton" is even lighter and its a 200mm quad with 4mm main plate. this thing is a beast!
Mar 17, 2017, 12:11 AM
Registered User
DMC firestar what adapter will you be using? I think i might use this: http://www.thingiverse.com/thing:1610834

and mount a TX03 cam like this: http://www.thingiverse.com/thing:1918972

although will need more angle for the camera so if you have any suggestions let me know.

Danq0: you can further lighten the build following this thread. We are looking at sub 200g dry weights still using 2205 motors and even lighter for DMC with his skitzo 2204.
Mar 17, 2017, 01:07 AM
Registered User
found an adjustable one: https://www.thingiverse.com/thing:2020926
Mar 17, 2017, 01:41 AM
VicRC
I made my own for my little 3" 118 quad, weighs in at 140gram but it is using Emax 1306 motors.

I know it looks like a miss piggy, it fits over a 20x20 mount
Last edited by fw190; Mar 17, 2017 at 01:47 AM.


Thread Tools