bbrown2828
150cc
I just picked up some new V2 arms from Aztech-Aeromodels to do a mini review for you guys on the forums. First off i've been using his v1 for a few seasons with good luck however I always had mod them to get a better clamping force exerted on the splines and I despised the set screw that stripped out after 2 turns.
After quick inspection I noticed a vast improvement over the v1 arms, first noticeable change was the shot peening finish and upgraded aluminum. Not only was the new material stronger (6063) the hole was tapped for a 2.5mm set screw which will withstand from repeated use of turning and multiple installs over its life.
I used an OMG coreless servo and it's bench line gear lashed was measured at .0035", the servo was placed in my servo tester using a mitutoyo digital indicator to check the back lash. Now that I had my base line the first arm I tested was a brand new 2.75" V1 arm. To figure out the lost of motion my measurements were taking from the outer attachment point on the arm which measured .0035". Using the V1 arms the lash had a total increase of .007", it doesn't sound like much however add 4" ball links and now check your surface deflection at center.
Now for the V2 arms I noticed a substantial difference in fitment over the splines , these felt more snug right out of the package even before the set screw was touch. With the V2 arm and servo now installed in the test rig I checked it's lost of motion. To my surprise it was only .001" and a total lash of .0045" (servo backlash plus lost of motion) What a huge improvement and these were great right out of the package. No need to mod them for trouble free operation.
Cliff notes:
V1 arms measurable movement .007" (servo back lash + lost of motion)
V2 arms measurable movement .0045" (servo back lash + lost of motion)
The V2 arms are stronger, better splines, and utilizes a 2.5mm set screw. If you haven't bought them or have been afraid to try them i'd highly recommend looking into them as you will not be disappointed. They are rock solid and just as good as anything else out on the market. Your measurements may vary as I was using a servo I already had laying on the bench but the principle will stay the same.
Check out Azhars website www.aztechaeromodels.com, he is a great guy and offers great products for us giant scale flyers!
It isn't flying season here so I haven't flow a plane using the V2 arms however I will be doing a new EG build soon to put these to the test. I will keep this thread updated throughout the upcoming year.
So what do you do now with your V1 arms? well you can give those blinged out arms to a local flying buddy and upgrade or you can do what I did since I have so many of them . Drill out the hole and tapped them for a 2.5mm screw. Takes a few minutes and offers superior clamping force compare to the old screw.
Just thought I'd share my thoughts about another good arm out there on the market and a great person to do business with!
Thanks guys and happy flying,
Justin
After quick inspection I noticed a vast improvement over the v1 arms, first noticeable change was the shot peening finish and upgraded aluminum. Not only was the new material stronger (6063) the hole was tapped for a 2.5mm set screw which will withstand from repeated use of turning and multiple installs over its life.
I used an OMG coreless servo and it's bench line gear lashed was measured at .0035", the servo was placed in my servo tester using a mitutoyo digital indicator to check the back lash. Now that I had my base line the first arm I tested was a brand new 2.75" V1 arm. To figure out the lost of motion my measurements were taking from the outer attachment point on the arm which measured .0035". Using the V1 arms the lash had a total increase of .007", it doesn't sound like much however add 4" ball links and now check your surface deflection at center.
Now for the V2 arms I noticed a substantial difference in fitment over the splines , these felt more snug right out of the package even before the set screw was touch. With the V2 arm and servo now installed in the test rig I checked it's lost of motion. To my surprise it was only .001" and a total lash of .0045" (servo backlash plus lost of motion) What a huge improvement and these were great right out of the package. No need to mod them for trouble free operation.
Cliff notes:
V1 arms measurable movement .007" (servo back lash + lost of motion)
V2 arms measurable movement .0045" (servo back lash + lost of motion)
The V2 arms are stronger, better splines, and utilizes a 2.5mm set screw. If you haven't bought them or have been afraid to try them i'd highly recommend looking into them as you will not be disappointed. They are rock solid and just as good as anything else out on the market. Your measurements may vary as I was using a servo I already had laying on the bench but the principle will stay the same.
Check out Azhars website www.aztechaeromodels.com, he is a great guy and offers great products for us giant scale flyers!
It isn't flying season here so I haven't flow a plane using the V2 arms however I will be doing a new EG build soon to put these to the test. I will keep this thread updated throughout the upcoming year.
So what do you do now with your V1 arms? well you can give those blinged out arms to a local flying buddy and upgrade or you can do what I did since I have so many of them . Drill out the hole and tapped them for a 2.5mm screw. Takes a few minutes and offers superior clamping force compare to the old screw.
Just thought I'd share my thoughts about another good arm out there on the market and a great person to do business with!
Thanks guys and happy flying,
Justin
