ORIGINAL: RysiuM
My UH order arrived - not bad: 8 days (including weekend) from placing the order to arriving it at my door. The lowest shipping (AirMail).
First thing - the motor I ordered was HXT 2435 (370S) 4040kv Brushless Inrunner (see picture below), what I got was the same looking motor but gold instead of purple and the name on the motor was: TURNIGY AERODRIVE xp B2435-4040. I don't know either brand so I don't really care - both are specified as 4040kv, and have the same size and weight.
I believe this is the same motor, and brand name is not important. I will not complain about good working motor for 17 dollars.
The second thing as I expected, the motor does not fit GWS EDF-55. This fan can accept motors up to 23.80mm diameter, but this brushless motor is 24.20mm dia. Now don't cream at me
. I put the motor on my lathe and I took 0.2mm of the case 14 mm long. It did not hurt the motor but mad it fit int EDF very nicely. The shaft is 2mm so no problem here.
And I should add, that I'm experimenting on my spare EDF unit (the old type with orange rotor). I programmed ESC to the safest parameters (very low timing) and then run it on 2s LiPo. BTW I ordered also Tower pro programming box - very easy to program their ESC.
At WOT the fan got 22k rpm at 6.8V taking 8.7A. This is way to low than I expected. I was looking into 27k rpm from 2s LiPo and current around 12A. This means for that voltage probably the better engine will be something around 5000kv.
Anyway, since my setup does not give me the thrust I wanted, I connected 3s Lipo and measured that. I got around 28-30k rpm (couldn't measure accurate as the EDF unit tried to ingest my rpm meter
) and the current was around 15A. This is more like the right power for this bird.
So I will need 3s battery that can deliver 30A const (probably 2500mAh will be OK) and this plane will do all the acrobatics that are specified in the ad.
I have to say that I am completely confused in your postings with what fits the Guanli DF and what doesn't, which brushless motors are a "drop-in" replacement and which aren't, or what you actually bought or had delivered and can it mount in the Guanli ... not the GWS DF's.
First I think that you need to not refer to anything GWS, it's confusing the issue here - upgradingh the Guanli A-10. The Guanli models are not GWS, but only "rip-off" copies (some good and some not so good) of the GWS models - the A-10 in particular is NOT an exact copy. From measuurements I've read, the Guanli is slightly smaller and might actually be heavier - GWS Wingspan: 38.5", Guanli: Wingspan: 34.5" and GWS: Weight: 15oz - Guanli Weight: 16 oz . The DF nacelle are not the shaped the same either, I looked at one at the local hobby store. Certainly the engine mounts wouldn't be the same I seriously doubt that Guanli is buying GWS EDF-55 units from a company that are ripping off designs from. So I wouldn't think any comparison is justified.
One thing you need to understand is that the (Red) Chinese never have or use the same component inproducts from day to day or week to week, on anything that they make. I have been dealing with Chinese manufacturers in the electronics and networking industry for 10 years and that has driven us nuts in trying to repair products they make! China is like early 1900's England and pre-post war Japan - a "Cottage Industrial" system. A "large" component mfr or "assembler" with the "brand name" you see on the product, goes to each of their "cottage" (and they ARE often a cottage or garage) small component makers daily to see who's under-bidding who for a part that the "big guy" is using in the assembling of a product. That worked fine in Britan, Japan or Taiwan where there was and is HONOR and pride and CONSISTENCY in manufacturing; but the Red Chinese have NONE of this. And that's why most things like iPuds, Macs, TV's, Radio, Networking hardware, Shavers, Toasters, etc. etc. are GARBAGE. That's why your brushless motors didn't match the specs or have the name you expected. Too many Red Chinese Mfr's are shoddyand allow things like radiator chemicals, lead or other lethal products in what they make and sell to the West.
Some of us that want to upgrade the Guanli A-10 don't have a lathe to make adapters for motors that were intended for a GWS to try to make work in the Guanli or turning motor housings down.
Also confused about your comments on the disassemly of the EDFs on the Guanli. Something about how or why it didn't come apart easily or at all. It was in another posting you had done. Can you re-explain how the disassembly went and how to do it or watch out for?
Lastly, is there ANY brushless motor that is an exact match in physical size and mounting for hte stock motors? I'd rather spend another 20 bucks than have to pay a local machinist with a lathe $120 buck per hour to modify it and the mount.
Thanks for your experimentations.