|
||
|
Quote:
As Spektrum does not have a similar model withing their portfolio (yet), they can offer it to interested customers and earn money by selling it. Nothing wrong with that. Jürgen |
|
|
||
|
|
||
|
Quote:
|
|
|
||
|
|
|
|
|
|
|
||
|
Quote:
This is what is bizarre, the easy star is a good beginners plane but it has been cloned to death, I am surprised they didn't just build their own variant. There are plenty of trainer designs out there and with horizon distributing so many different foamy companies, eflite, park zone etc it seems odd to recommend an airframe they don't make in conjunction with a radio they don't sell. Set up with a competitors servos... If that isn't a bizarre marketing angle then maybe I am just missing the point but I can't see how they get anything out of it. /Steve |
|
|
||
|
|
|
I finally had my first flights with the Turnigy 2836 1500 kv motor today, though I had to deal with some vibration issues first.
When I first installed the new motor and checked rotation with an APC 7x5 prop, I noticed it vibrated the motor pod violently when over half throttle. I could see the shaft vibrating over 1/8" travel. My prop balancer is currently hiding somewhere, so I installed a 6x3 Cam slimprop that I knew to be whisper smooth. Still a bit of vibration, so I disassembled the motor, installed both prop adapters fore and aft on the outer bell, and supported the assembly on parallel, level razor blades. The bell consistently came to rest with the sticker down, so off it came. Balance was now neutral to the best I could determine. Retesting with the Cam prop showed no audible or visible vibration, so I put on the APC again and tried it out. There was still a bit of vibration at full throttle, but not enough to be visible; I could feel it in the airframe though, which means it would affect video. The vibration was improved by installing the plastic motor pod cover, which obviously makes the pod more rigid. While the vibrational energy is still there, it's absorbed by the entire airframe instead of stressing only the pod. On 3s with the 7x5 APC "bone-shaker", it gives much better thrust than the 1200 kv motor used previously. With a fully cased GoPro Hero 1 it could climb at 60°. I'll eventually try it with the stock folding prop, but I managed to shear the stock hex-backed collet while tightening it. I have video, which did show the vibration problem with heavy throttle. I'll post it once it's edited in a few days. Damn, that snow is bright! Gotta come up with a neutral density filter attachment for the GoPro, or maybe a polarizing filter. Also I found out the 40a Plush ESC defaults to no brake, so I was constantly windmilling unless I pulled it back to nearly a stall to halt the rotation. |
|
|
|
||
|
Quote:
|
|
|
||
|
||
|
Quote:
I'm using a collet from another aftermarket motor which fits 1/8" shafts. BTW, a good digital caliper measures this motor shaft as 3.15mm. Taking measurements on a few other motors I had laying around, I get between 3.14 and 3.16mm. I had problems trying to take off from the snow. My first flight was hand-launched to get the airframe down to ambient temp. Never want to put a warm object in cold snow unless you want to get it coated with rough ice. After trimming, I landed and tried take off, but due to the fairly deep fresh snow (2-3" above the crust), I kept ground looping due to dragging the wing tips. |
|
|
||
|
|
|
I have one of these motors (not yet installed) and just checked with my spare MPX collets. One of them fits perfectly. Sounds like you weren't supplied with both sizes.
|
|
|
|
|
|
Good to know, thanks for that info. MPX USA is sending me out another one free. Hope it works, as I'm almost done with the build.
|
|
|
|
|
|
Thats why we buy MPX. I just assembled two HK kits: The Bixler 1.1 and the RadJet800. None of the collets supplied with those two kits fit any of my app 14 available outrunners of 3.00-3.17mm shafts. Wonder if it would be possible at all to get fitting replacements from HK?
|
|
Last edited by mike_o; Feb 28, 2013 at 03:25 AM.
|
|
|
|
I picked up the Easy Star II to replace a well-crashed I. Flew it today. It uses the aftermarket motor and prop from Tower Hobby... with an new 3 cell Lipo it is really fast!
Measured the airspeed in both directions... images from the HatCam video. |
|
|
|
||
|
Quote:
Thank you. Todd |
|
|
||
|
|
|
|
|
|
Thread Tools | |
Similar Threads | |||||
Category | Thread | Thread Starter | Forum | Replies | Last Post |
Sold | Multiplex Easy Star | james mack | Aircraft - Sailplanes (FS/W) | 2 | Oct 17, 2011 07:33 AM |
Discussion | Multiplex EASY STAR | rickhensley | Electric Sailplanes | 92 | Oct 13, 2011 02:43 PM |
Sold | Receiver Ready Brushless Multiplex Easy Star with Lipo, Pen Cam, & More! | eagleswings | Aircraft - Electric - Airplanes (FS/W) | 10 | Jul 12, 2011 03:28 PM |
For Sale | Easy Star Multiplex Brushless Motor Power Pack | techcapsule | Aircraft - Electric - Airplanes (FS/W) | 0 | Jul 11, 2011 03:11 PM |