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If your battery charge has the IR, i.e., internal resistance function, measure that and compare it with the original battery specifications. If the IR is close to the original specs, then your battery electrochemistry is not compromised and it can be recharged and re-used safely. But also be...

Batteries appear to be simple but there is a lot of complexity under the hood with respect to the nature of the electrochemical activity going on inside. And LiPos are the most complex of all battery types such that TLC is required to make them last longer. WHEN TO LAND YOUR MR: If I recall...

If I read the data correctly.... these have triple bearings!!!!! Never heard of that before......can't imagine where the 3rd bearing sits..... But if true, it is easy to understand that motor balancing should be easier and be maintained much longer....

In general that statement is true. But in the case of the DJI products less so.... in part because of s.bus..... Also there is excellent guidance on configuring Futaba RC systems for DJI products such as the following: http://www.youtube.com/watch?v=ck3tu-4UVgg

archaeon, As a fellow electrical engineer going on 30+ years in the business and very involved with Multirotors may I suggest first you consider an entry level item then work your way up. Two come to mind: http://www.bladehelis.com/350qx/ and the DJI Phantom series. These are hard to break...

Seems that extracting a portion of my original quote makes it appear very much out of context with my name attached..... here is the original again.... "Not sure why so many are still having issues with DJI products....... any issues I had in the past seems to be mostly resolved now as I have...

Not sure why so many are still having issues with DJI products....... any issues I had in the past seems to be mostly resolved now as I have well over 200 successful flights with the WKM with fw 5.20 on an S800 clone and many more before that on my original NAZA c/w F550. However I do recall...

Not to my knowledge with respect to Bradatech, MultiRotorHeli and another from Manitoba that I can recall..... Technically there is a customs exemption for Asian products landing in USA then being resent to Canada or Mexico but there is still paperwork etc.

Isn't it about time someone developed a winch to lower an RC buggy from a Multirotor? Here is how NASA did it!

As far as I am concerned, MRF is the goto forum for issues related to the new A2...... and great work Bartman... much appreciated. And indeed, the subject head of a forum thread sets the tone throughout.

Excellent videos.... So what is the summary on the bluetooth display of MR voltage level.... a configuration issue or a sw/fw related issue?

The ability of a tube to resist crushing or rupture is referred to as the hoop strength. The need for a quasi-isotropic cf fabric layup is applicable to cf plate but becomes much less relevant when the structure is tubular. The epoxy is simply a two component plastic such that CFRP stands for...

https://vimeo.com/77476282

There is an online hobby supplier near Winnipeg selling DJI products as well as Graupner propellers.... just can't recall the name of the business right now. I lost touch when they ran out of the Graupner props I was needing.

For what its worth, here is my Cinestar 8 c/w DJI A2..... still going thru bench testing, QA and QC. FPV, Camera c/w BG+BGC to be added after several initial test flights. No rush since we just had our first snow blizzard of the year and am confined to the man cave for awhile yet......

I read somewhere in MRF recently where someone with a Octo X indicated that shimming the motors is not required with a coax setup..... probably Ferdinand. But personally I don't have a coax setup.

Thanks Denny.... I like the part indicated in orange/underlined text..... makes sense now. In our industrial business the concept of deadband is introduced to eliminate "chatter" from on/off control systems such as room temperature control allowing the room temperature to swing up and down over...

And here is a similar rod clamp.... these are sold in pairs......http://www.aliexpress.com/item/FA020-quick-release-clamp-clip-for-15mm-tube-use-1pair-pack/1498205160.html

Thanks for the head's up aopen3434.... Good to see you have a business here in Canada that I can deal with in the future if/when the need arises. Still not clear where the mismatch is but as a last resort our team has CF plate and a CNC machine...... and adjusting a 4 hole bolt pattern should...

see red below ....too expensive..... well they are 15% right now at this location..... http://www.aliexpress.com/snapshot/299926814.html. I just ordered one.