crayfellow
Member
Hi there,
Can anyone recommend a motor mount compatible with 25mm carbon fiber tube? I was attempting to use the QuadFrame mounts which look like this:
View attachment 25032
The center hole on the QuadFrame mounts appears to be 9.5mm in diameter, but the retainer on the bottom of the KDE motors I am using (3520-400, 42mm diameter motors) needs more like 11mm clearance. As a result, the motors are binding and do not spin freely:
View attachment 25033
Based on recommendations from others I attempted to drill out the (G10) plates but they are not looking good. There is nowhere near enough material between the center hole and the slots for the mounting screws. One got torn up a bit and I'd rather not destroy something needlessly when I could reuse the good ones for a different purpose (smaller motors on another craft, I guess). I also don't like the idea of motor mounts shredding in mid flight flinging massive props everywhere
@Hexacrafter, I see you have a mount for up to 46mm motors. Do you have something (or could you make something) which would mount on my arms (round 25mm carbon fiber tube)? It looks like your mounts have plenty of clearance for the bottom shaft on the motor as you are using the far outside screw holes (right?). Also they will be lighter being CF.
Alternately, is there a mount you folks could recommend for this size motor to clamp onto 25mm tube?
EDIT: I found these and these on AerialPixels which support 25mm tube. Seems like they are made for this purpose, but for different mounting patterns (KDE 3520-400 has mounting holes at 25mm and 32mm). This one says the holes are at 30mm but I can see there are slots, but I don't see specs for the min/max of those slots. The center hole is 12mm though, which is perfect. Maybe the minimum dimension of those slots would support the 25mm spacing.
EDIT: The AerialPixels mounts are not in stock, but these at Quadrocopter appear to be perfect. With those I just need the frame clamps and screws, right? It does not appear to require any sort of bottom plate.
EDIT: I ended up ordering 6x of the Quadrocopter Heavy Lift Motor Mount with 6x of the Cinestar Frame Clamps (I realize I could have probably used any clamps, but I may as well use these). I will post back with results.
I have to say I did not anticipate mounting motors being one of the major unexpected challenges of the build.
Thank you!
Can anyone recommend a motor mount compatible with 25mm carbon fiber tube? I was attempting to use the QuadFrame mounts which look like this:
View attachment 25032
The center hole on the QuadFrame mounts appears to be 9.5mm in diameter, but the retainer on the bottom of the KDE motors I am using (3520-400, 42mm diameter motors) needs more like 11mm clearance. As a result, the motors are binding and do not spin freely:
View attachment 25033
Based on recommendations from others I attempted to drill out the (G10) plates but they are not looking good. There is nowhere near enough material between the center hole and the slots for the mounting screws. One got torn up a bit and I'd rather not destroy something needlessly when I could reuse the good ones for a different purpose (smaller motors on another craft, I guess). I also don't like the idea of motor mounts shredding in mid flight flinging massive props everywhere
@Hexacrafter, I see you have a mount for up to 46mm motors. Do you have something (or could you make something) which would mount on my arms (round 25mm carbon fiber tube)? It looks like your mounts have plenty of clearance for the bottom shaft on the motor as you are using the far outside screw holes (right?). Also they will be lighter being CF.
Alternately, is there a mount you folks could recommend for this size motor to clamp onto 25mm tube?
EDIT: I found these and these on AerialPixels which support 25mm tube. Seems like they are made for this purpose, but for different mounting patterns (KDE 3520-400 has mounting holes at 25mm and 32mm). This one says the holes are at 30mm but I can see there are slots, but I don't see specs for the min/max of those slots. The center hole is 12mm though, which is perfect. Maybe the minimum dimension of those slots would support the 25mm spacing.
EDIT: The AerialPixels mounts are not in stock, but these at Quadrocopter appear to be perfect. With those I just need the frame clamps and screws, right? It does not appear to require any sort of bottom plate.
EDIT: I ended up ordering 6x of the Quadrocopter Heavy Lift Motor Mount with 6x of the Cinestar Frame Clamps (I realize I could have probably used any clamps, but I may as well use these). I will post back with results.
I have to say I did not anticipate mounting motors being one of the major unexpected challenges of the build.
Thank you!
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