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ZMR 250 spacer arm

by DengisKong Mar 12, 2015
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How easy is it to make some longer arms, say 15-20cm, of similar design. Thinking of turning one of my zmr250's into a zmr[insert bigger number]?



Hello, what happens if I install the 2204 and 5 propellers? And what files need to be printed out for these engines?

Hello thedingus.
Your arms seems great.
But i'm a little lost, i don't know which file i'm supposed to pick since i'm new here and in quads/fpv.
I have a stock falcon eachine 250 (A chinese zmr250 clone i believe) with MT 2204 motors and 5" props.
Which file match the best for me ?
Which material is the strongest for you ?
Maybe slightly flexible is better ?

hi, i need 2004 and 5'' props too. I think we can to see the date of updates. the disscuss was 07/02 and updateed too

Hey guys, The final uploaded .stl file should be the best revision of the arm so far. It can fit 5 or 6 inch props. Be wary of only replacing one arm, as the length of this model is different from the original arm. I will try to re-upload the finalized files and have one original length and one 6" arm. Sorry for any confusion, this project is a little old and was based highly on online feedback. I have never used the arms myself... by the time I finished the design, I had my new carbon arms from China :)

hello mate do you have Stp files for this arm? or any solidworks file ? thanks

Great design I have a good use for these now. cheers

Will this fit a Emax MT2204 motor?

no, my 2204 qx motors not fit, i thing any 2204 will not fit :(
Can we ask for bigger frame around motor for 2204 motors? :) Thank You.

Updated with one that should fit. Cheers!

Thank You :)
It looks nice.
I will try it ASAP . Is it for 6inch props?

Updated with 6 inch arms for 2204 motor. Motor mount plate is thicker on this one, let me know if it can use changes!

Hi. I just printed it. And it looks nice. Thicker motor mount is ok. But holes are not for 3mm screws. No problem for me now, i will drill 1/4mm from every side. But for future do 2204 version for 3mm screwz.

Yes! It looks like we have a final version here :) It is very nice design, best arms for 250 racer here at thingiverse. Thank You!!

No problem buddy! only thing I could think to improve them would be to inset the screws

Hello, can you do that ZMR250_3d_Printable_spacer_arm_v2_6inch_2204 without those four notches for zip ties? Thank You.

Updating it now, buddy! Thanks for the feedback!