Timing mode/Throttle Curve. I am using it on a HK250 with a 15tooth pinion and a Turnigy Plush 25Amp ESC. What timing mode is recommended. Also can anyone recommend a set of throttle and pitch curves for this setup. Also, whats the go with auto-rotation on these helis? It looks like the tail rotor will stop if the motor stops,has anyone got any experience with this?
The timing mode should normally be "high" since this is an outrunner. Try that one first, if the motor or ESC gets hot then try "low" or "automatic" (don't run it too long). I mainly use two throttle/pitch setups: Normal, where throttle is 0-25-50-60-70, pitch 47-48-50-60-70 (for take-off and landing). Idle up 1, where throttle is 80-75-70-75-80 and pitch is 20-35-50-65-80 for 3D/inverted flight (50 is zero pitch). Your observation is correct, the motor must run for the tail to run. If you lose power while in the air, only the main rotor will continue spinning (provided that the bearing friction is low enough). In general, this size heli is not really up for auto-rotation (but there is a guy on you-tube that does it with a t r e x 250). But this heli has no drive of the tail rotor when auto-rotating, which makes it even trickier I guess (haven't tried it). HTH
I have this motor in both my HK-250GT, and I love it.
I'm using it with Turnigy Plush 25A ESC, Gaui 15T pinion (for 2.3mm shaft) and Turnigy nano-tech 3S 850mAh batteries.
The battery gets a little warm, but nothing to worry about.
Hope this helps..
it ill handle any esc 15 to 30 amp appropreat battery is 2 to 3 cell lipo 7.4 to 11.1 volt up to 2600 mah and no mor than 30c what elce do you need to know all the info is writen with the description such as size its desighned for small load especialy if you choos a high powerd esc to run it
Between the two pinions I actually recommend the 15T
but don't forget to use a good set of blades like carbon fibre ones... never plastic ones...
I think that greater headspeed gives a better hover on a small heli *)
No. The pinions don't fit HK250, the spacing between the teeth is to large. And the pinions supplied with the HK250 does not fit this motor. The shaft diameter is 2.3mm(not 2mm as stated above), while pinion of HK250 is 2.5mm.
Exactly the pinions that came with this motor can NOT be used with a HK250 because they are too tall.
But you should use the 2.3mm pinion (0.4MOD) not the 2.5mm(0.4M). That would cause unbalance and vibration.
Check the firefox section for 2.3mm pinions for hk250.
brushless motors are measued in KV meaning RPM PER 1VOLT thay dont have an armature with turns in this dase the sharft is the magnet and its turned by alternating current in coils of wire mounted to the can of the motor thats just a simple way of explaning it so in this case the motor has a top KV rate of 3800 and lets say you run it on 6 volts for example youll get 3800x6=22800 RPM also in respect to these motors KV dose not mean killervolts its a common mistake to beleave this it simply means
Haven't used in funjet but I am running it in my homemade F-4 pusher jet, using GWS motor mount, 1300mah 3s, 25A ESC, APC 4.1X4.1 prop. AUW ~420g (15oz), lot of power, good vertical and speed. Well made motor for pusher jet.
with an 11.1volt battery and the motor running full potential the total rpm is*42180 the formula for brushless motor rpm is kv x voltage so 3800kv or rpm per volt x 11.1 volt battery gives you the anser above if you use a smaller or larger voltage youll get different rpm this motor can handle up to 6cell battery with the appropriate esc of 60-80amp
Any new advice on replacing the shaft on this motor? I bought it for a HK T-Rex 250 clone kit, but tried it in a stick plane while waiting for another motor to arrive, and bent shaft. Does shaft come out the rotor shaft side, or pushed out the back side (no mounting holes side)? Thank You.
iv also bent the sharft in one of these motors whats requierd is to remove the E clip and grub screw anseperate the motor case and rotor than position the can over a vice an with a light hammer and small punch tap the sharft out of the can though must be carefull not to dammage anything its probably a better idea to get a new motor LOL
Where can I get another shaft for it? I tried local hobby shop, but they said it would have to come from motor manufacturer. I tried ordering a similar shaft from HK also, but may be a backorder holding things up.
This motor dose seem to be an unfortunant topic lol iv tryed ebay and my hobby shop with no luck what you could try is buy a length or steel rod/shaft from your local hobby shop or hardwear stor maybe a local metal shop or bearing shop i bought a new motor when i stuffed mine but sometimes i just make my own parts
Hi friends 1) This mpotor is it goog to heli HK 250? 2) The motor came with two pinions, but they don´*t fit in the maingear. What can i do? Wahat pinion I have to buy to use with this motor on heli HK 250? 3) what the best servos to use on heli HK 250?
What another motor to use in heli hk 250, or this is good? I intend higher time of fly, Í* don´*t fly 3d, I´*m learning to fly yet. Is there any motor that cames with pinion that fit at maingear of heli hk 250? What?
use the pinion that come with the 250 kit because i used that with the same motor and it working fine...but this motor will running on a 3s battery and you want to run on 2s battery then you have to a motor from firefox part page on hk...hope this will help you..
Hi Aureo! I use this motor: T2627-3800, and I use this pinion: E2.3-0.4-14T. You have to cut off a few millimeters of the motor shaft but that's easy. Look under the Files section here for "HK250GT FBL Build and setup" for details.
The 3mm shaft is the same as many other motors in HK. According to my experience, any 3mm shaft should work fine with this motor* but I am having hard time pushing the shaft out of the bell, whereas many other 3mm, 3.17, or 4mm shaft are fairly straightforward to get out. Think this motor might work best as the bell hanging at the opposite side to the prop* you need a motor mount like the GWS type (HK product ID: GWEMM28TS) to mount the motor. Hope this helps!
Your setup sounds good. Of course higher C rating battery would be better and 30A ESC would suffice. Motor shaft can be loosened with allen's wrench and repositioned as you desire. make sure to use or make a flat spot on the shaft where you tighten the set screw, lightly filing would be enough. I routinely replace shaft when I received a new motor.
Yes You can ,
as you can check from motor spec ,the max Power value is 260 W , this means that if you use a 3s battery you can have at maximum value of current (I=W/V) aprox 260/11.1 = 23,4 Amper MAX.
So you ca use the 30A ESC whit no problem
Turnigy Plush 30A ESC GWS 4040 cut to 3.5" Turnigy 1300 3S1P 30C 11.13V under 31A load for 345W peak. Wing covers 1300' in just under 8 seconds for 110plusm/h WOT pass Just over skin temp after the run.
Awesome little motor.
7 comments. Reply..
9 thumbs up!
Great little motor. Put in my trex250 with little mod (motor mount slots widened). Using 15t pinion, gobs of power. Stock ESC seems to hold up. The motor and esc are ambient temp.
No comments. Reply..
5 thumbs up!
I wanted a small light weight motor with high RPM that would give me over 125 watts with a small prop to use on a F1Q free flight plane. The Turnigy 2627 bruhless gave me just that at a grear price. Test results.....7 sec run(bench)(max motor run for F1Q is 15 seconds) 800 mAH turnigy 7.4 lipo 30 amp super simple ESC Z-Tron ESC controler and DT timer 4.5x4 APS prop
25amps/150watt/41mAh more test needed but so far it 4 stars
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4 thumbs up!
Mine is not nearly as good looking as the Photo. Etched labelling covers the entire spotty blue flux band. Red is actually pink. Gaps are excessive and the Winding effort is truly abysmal. The Stator is about 2/3 rds the width of the Flux ring, It's much smaller than the overall size or dimensions suggest. Other Turnigy's (27/30, 22/11) in my hands are far better made. Seems to run OK, not overly smoothly though. Unlikely to buy another.
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3 thumbs up!
My initial impression of this motor is quite different than I feel now. 1st of all the motor is NOT 3800. More like 4300kv. This required me tracking down a 9t pinion at the LHS. Once set up AND broke-in the motor is awesome. On my >500gram Honey Bee King 2 flight times with the STOCK 1000mAH 10c 3s are 10 minutes. Initially it had a very hard start, either it wore in or the change from the Thunderbird 36 I was using changed that. It's SMOOTH now