PARKJET MOTOR BENCH TESTING

Discussion in 'Electronics' started by e3_Scott, Jul 6, 2013.

  1. e3_Scott

    e3_Scott Top Gun

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    Hi Everyone -

    This motor is certainly not quite as inexpensive or efficient as the last two I posted, but it wastes very little time getting from point A to point B ;) More info in the video description if you watch on YouTube. Unbelievable torque and power for such a small, light motor (48 gr with all the hardware and prop) on 3S :)


    Cheers,

    Scott
     
    Last edited: Mar 28, 2018
  2. Those are my type of motors, who cares about fuel mileage. ;)
     
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  3. e3_Scott

    e3_Scott Top Gun

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    Hi Everyone -

    I managed to get out and do a bit of field testing with the Gemfan 6045 carbon nylon prop https://www.banggood.com/Gemfan-604...963446.html?rmmds=mywishlist&cur_warehouse=CN on the 2212/6 2200 Kv "park jet workhorse" motor today on 3S, some very good results :)


    You can read more about my first impressions and bench test data with this prop and motor at this blog post http://scottsparkjetblog.blogspot.ca/2018/03/gemfan-6045-carbon-nylon-props-initial.html

    I flew several more flights after shooting the above video and I would say that the performance with this prop is better than the 6x4 APC gas prop I have run a lot on this motor. It did run the motor a little harder, a 40A ESC would definitely be required if you went with this Gemfan 6045 CN prop, but really good improvement in mid range power and torque if you are looking for an inexpensive way to breathe a little life into your 2212/6 2200 kv motor setup. These props are about $0.95 USD each from Banggood compared to about $3.09 (including shipping) for the 6x4 APC gas and I know that lots of folks around the world have difficulty getting the 6x4 APC gas prop. This is a very good prop from what I have seen thus far for motors of 2600 Kv and below.

    I did do a bit of a review of the FlySky FS-i6 transmitter in this video as well, but I have already shot a more detailed post flight video which will be posted in another thread when it is finished processing :)

    Cheers,

    Scott
     
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  4. OldSchoolFlyer

    OldSchoolFlyer Airman

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    I am interested in your thought about a 2827/3500kv EDF motor converted to prop ? I recently had a crazy flight that resulted in shredding the RCP Euro fighter V5. I installed a 70MM EDF in the euro fighter and flew it with a 14.8V 40C 1300 mah battery. The fan sucked in something in mid flight and exploded cutting the plane in half in mid flight. Everything right and left of the fan was totally shredded. I wish I had a picture ! It was crazy. So back to my question ?? What experience have you had using a 3500kv motor with a prop ? will the engine need the 14.8 v or can I use a 11.1 ? 30 or 50 amp speed control ? Dont want to toast the engine or speed control. Your thoughts ?? Thanks Jim
     
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  5. e3_Scott

    e3_Scott Top Gun

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    I have had no experience using a 3500 Kv motor in the size you mention, sorry. I would suggest you get in touch with @Wildthing through this thread or via PM, I know that he has some experience with 2836 3500 Kv motors running on a prop, he would be much more knowledgeable about prop, ESC battery on that size motor. Best of luck.

    Cheers,

    Scott
     
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  6. OldSchoolFlyer

    OldSchoolFlyer Airman

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    Thanks I will send Wildthing a msg. Wish I had a video of the fan explosion I could share.
     
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  7. e3_Scott

    e3_Scott Top Gun

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    Hi Everyone -

    I received another quad racing motor in the mail today to evaluate for use in a park jet, the Hawksky AT2306 II 2750 Kv. https://www.banggood.com/Hawksky-AT...mmds=mywishlist&ID=223518683&cur_warehouse=CN

    A pretty light motor, with prop and all the hardware to be ready to go in my plane, it weighs 44 gr/1.6 oz which is about 4 gr lighter than most of the motors in this size and Kv I have tested thus far.
    2018-04-11 12.19.52.jpg
    You can read more about my initial impressions at this blog post http://scottsparkjetblog.blogspot.ca/2018/04/initial-impressions-and-bench-testing.html

    You can also just go straight to the updated motor test spreadsheet, if you scroll across the bottom, you will find the page with the data for this motor https://docs.google.com/spreadsheets/d/1KLR_wdkJ1OdGcf5f9jxxxU8qqmz_kXjMQH8NOLjW3NQ/edit?usp=sharing

    As I mentioned in the blog, I initially tested with the 6x4 APC gas prop like I have used as a benchmark for all the other quad racing motors I have tested. Unfortunately, with this prop, the motor did not perform as well as expected and amp draw ranged anywhere from 43.9 to 47.7A, exceeding the base amp rating of all three ESCs I used for testing on 3S.

    So I decided to "prop down" to a 6x3 EMP (links to all the props, ESCs, battery are on the spreadsheet above) to see what would happen and the thrust numbers jumped up considerably and the amp limits dropped to far more acceptable levels. Although I will initially flight test it with the Turnigy Plush for consistency, once that is done, I would probably use the Turnigy AE-45A ESC with custom settings of 22.5 degrees timing and 24 KHz PWM frequency as this motor with the 6x3 EMP prop performed the best with that relatively inexpensive yet versatile ESC. Here are the numbers for that combo from the spreadsheet again on 3S :).

    50% throttle - 17.6A/217.5W producing 646 gr/22.8 oz of thrust;

    100% throttle - 42.3A/485.1W producing 1215 gr/42.9 oz of thrust.

    Pretty serious numbers for a 44 gr motor:)

    I have a few more motors to come in the mail that I picked up on sale, then I will be going back through the spreadsheet and test all the other 2700 + Kv motors with the 6x3 EMP prop to see if the performance and efficiency improves. I will get this motor flight tested during my next flight session:)

    Cheers,

    Scott
     
    Last edited: Apr 11, 2018
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  8. e3_Scott

    e3_Scott Top Gun

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    Hi Everyone -

    While I had the thrust test rig set up from testing the motor above, I decided to try the Multistar Viking 2208 2600 Kv motor https://hobbyking.com/en_us/multist...runner-drone-racing-motor-2208-2600kv-cw.html with the Gemfan 6045 carbon nylon prop https://www.banggood.com/Gemfan-604...963446.html?rmmds=mywishlist&cur_warehouse=CN that has shown such great results on motors of 2600 Kv or less and this was another big winning combo! :)
    2018-04-11 16.56.34.jpg
    You can read the details here on the motor test spreadsheet https://docs.google.com/spreadsheet...xxxU8qqmz_kXjMQH8NOLjW3NQ/edit#gid=1411538087 Again, if you navigate along the bottom, you will find a page dedicated to this motor, the new test results are the last three rows.

    Again, this motor continues to like the custom settings in the Turnigy AE-45A ESC of 22.5 degrees of timing and 24 KHz PWM frequency. Here are the numbers with the above motor and prop on 3S which is the best setup I tested.

    50% throttle - 15.3A/184.8W producing 640 gr/22.6 oz of thrust;

    100% throttle - 36.1A/413.6W producing 1190 gr/42.0 of thrust.

    What is impressive is that compared to the previous best numbers, it is a 40 gr increase in thrust at 50% throttle with essentially the same amp draw and a whopping 125 gr increase in thrust at full throttle with the same amp draw. Wow:) I know from experience this motor has the torque to swing this type of prop in the air without a problem. It is the most expensive motor I have tested thus far at $28.70 USD, but both that I have purchased I got on sale for $17 and $21 respectively, so if you keep an eye out, you can normally get a good deal on them.

    Very efficient power on the bench anyway, so I'm excited to get it out to the field for a rip very soon :)

    Cheers,

    Scott
     
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  9. e3_Scott

    e3_Scott Top Gun

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    Hi Everyone -

    I managed to get out today and field test the Hawksky AT2306 II 2750 Kv motor with the 6x3 EMP prop. I was going to use the Turnigy Plush ESC, but everytime I saw that 1200+ grams of thrust the Turnigy AE-45A ESC was giving me, I couldn't help myself.:) Quite a powerful setup on 3S, really great "hole shot" acceleration, lots of speed and torque for days from such a light motor. Very happy with this setup :)


    Cheers,

    Scott
     
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  10. andy_downs

    andy_downs Ace Pilot

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    nice set up,may be to quick for me though.
     
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  11. e3_Scott

    e3_Scott Top Gun

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    Hi Everyone -

    Bit of "Mig-35B mania" going on at the field today, I also managed to field test the Multistar Viking 2208 2600 kv motor with the Gemfan 6045 carbon nylon prop on 3S as described above in post #848. Great improvement in both speed and torque just with the switch to this prop, very impressed while staying very efficient, always a good thing :)


    Cheers,

    Scott
     
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  12. bogusbandit56

    bogusbandit56 Top Gun

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    Hi Scott,
    I was browsing youtube today and saw a guy who was very excited about these motors.
    Have you tried them? DYS Sanguk series of quad motors.
    https://www.banggood.com/DYS-Samguk...Racing-Drone-p-1226073.html?cur_warehouse=USA
     
  13. e3_Scott

    e3_Scott Top Gun

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    I tested the Samguk 2306 2800 Kv motor, waste of money in my experience, all flash, no dash. Of all the quad motors I have tested thus far, DYS have been complete duds performing well below expectations and/or breaking down after only six flights. I also tested this DYS motor I got from Hobby King https://hobbyking.com/en_us/dys-mr2205-2750kv-250-size-quad-motor-cw.html, performed well below what I get out of a 2212 2200 motor by a long shot, I didn't even bother putting the results in my motor test spreadsheet it was so bad https://docs.google.com/spreadsheets/d/1KLR_wdkJ1OdGcf5f9jxxxU8qqmz_kXjMQH8NOLjW3NQ/edit?usp=sharing

    More on my experiences with the DYS Samguk Shu 2306 2800 Kv motor http://scottsparkjetblog.blogspot.ca/2018/03/dys-samguk-shu-2306-2800-kv-motor-field.html Since then, I have also learned there have been issues with the whole Samguk line of motors where the stator can actually come apart from the motor causing even more catastrophic issues.

    Much better motor/prop combos available for close to the same price that thus far have been running really well on 3S for me anyway. Best budget setup thus far for torque, performance and durability is the Racerstar BR2406 2600 Kv motor from Banggood (also available on Ebay) https://www.banggood.com/Racerstar-...s=detail-left-hotproducts__1&cur_warehouse=CN which always seems to be on sale at Banggood anyway. Here is a more indepth review I did, runs best with the inexpensive Gemfan 6045 carbon nylon prop https://www.banggood.com/Gemfan-604...963446.html?rmmds=mywishlist&cur_warehouse=CN and the Turnigy AE-45A ESC with custom settings of 22.5 degrees timing and 24 Khz PWM frequency https://hobbyking.com/en_us/turnigy-ae-45a-brushless-esc.html.



    Cheers,

    Scott
     
    Last edited: Apr 13, 2018
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  14. bogusbandit56

    bogusbandit56 Top Gun

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    Thanks Scott, that saved me some cash.
    I still have some focal price type 2212 2700 motors that I think I will stick to for park jets and wings.
    I was thinking about hanging some light weight motors off the elevons of my old RCP su 34, but with so many motors in stock I don`t really want to spend a lot of cash.
    Cheers,
    Ian.
     
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  15. e3_Scott

    e3_Scott Top Gun

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    Hi Everyone -

    A couple of review videos I uploaded today. This one is about the Gemfan 6045 carbon nylon prop which really stepped up the power on some motors I have bench and field tested between 2200 and 2600 Kv. You can read all the results on the props and motors on my motor test spreadsheet here https://docs.google.com/spreadsheets/d/1KLR_wdkJ1OdGcf5f9jxxxU8qqmz_kXjMQH8NOLjW3NQ/edit?usp=sharing


    This motor below paired with the Gemfan prop is a real beast and although expensive is often on sale. I looked back at my old spreadsheet and this motor paired with the Turnigy AE-45A ESC and the GF 6045 CN prop produces slightly better power than the NTM 2836 2700 Kv motor on 3S with the 6x4 APC prop and is 3 oz lighter than the NTM 2700 paired with the Turnigy Plush 60A ESC I used to use with it. It also produces this power (1190 gr/42 oz of thrust) at full throttle while drawing 10+ amps less juice out of the battery :) Of course it doesn't produce quite the torque as the NTM motor, so I wouldn't put it in a large, heavy plane and expect the same results. Most of the planes I fly are in the 27" wingspan range and weigh 19.5-21 oz just to put it in context :)


    Cheers,

    Scott
     
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  16. e3_Scott

    e3_Scott Top Gun

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    Hi Everyone -

    I had the thrust rig busy again today testing all of the 2700 Kv and over quad racing motors I have tested thus far with the 6x3 EMP/TGS/KMP prop depending on who you buy it from.

    Motors I tested today in case you might have one or are thinking of trying one

    EMAX RS2306 2750 Kv https://hobbyking.com/en_us/emax-rs2306a-2750kv-black-version-motor.html

    Foxeer DATURA X2206 2700 Kv https://www.banggood.com/Foxeer-Dat...-p-1196244.html?rmmds=search&cur_warehouse=CN

    BeeRotor Z2207 2780 Kv http://rctimer.com/product-1734.html

    Brother Hobby Returner R2 2205 2800 Kv https://www.banggood.com/BrotherHob...p-1097177.html?rmmds=myorder&cur_warehouse=CN

    Racerstar BR2306 2700 Kv https://www.banggood.com/Racerstar-...p-1149532.html?rmmds=myorder&cur_warehouse=CN

    SunnySky Edge R2305 2800 Kv https://www.banggood.com/SunnySky-E....html?rmmds=search&ID=511893&cur_warehouse=CN

    Here is the link to the motor test spreadsheet if you want to read the full details, each motor was tested with the Turnigy Plush 40A ESC, The HobbyWing Platinum PRO 40A ESC (with custom settings of 26.25 degrees timing and 8 KHz PWM frequency) and the Turnigy AE-45A ESC (with custom settings of 22.5 degrees and 24 KHz PWM frequency) on 3S. https://docs.google.com/spreadsheets/d/1KLR_wdkJ1OdGcf5f9jxxxU8qqmz_kXjMQH8NOLjW3NQ/edit?usp=sharing

    When comparing their previous test numbers using the 6x4 APC gas prop, all motors showed an increase in thrust and improvement in efficiency (i.e. lower amp draw) using the 6x3 EMP prop except the Brother Hobby 2205 2800. I suspect due to it's small size stator, it really needs a 6x4 prop to push it to it's best performance as it's performance across the board was worse with the 6x3 EMP prop.

    The EMAX RS2306 2750 continues to be a very good overall performer and with this prop preferred the less expensive Turnigy AE-45A ESC over the HobbyWing 40A ESC which it preferred with the 6x4 APC gas prop. Not a big increase in mid range power, but still the best mid range compared to the other motors and a significant increase of 125 gr of thrust at full throttle pulling significantly less amps :)

    EMAX RS2306 2750 kv numbers with 6x3 EMP prop and Turnigy AE-45A ESC on 3S

    50% throttle - 16.4A/197.5W producing 650 gr/22.9 oz of thrust;

    100% throttle - 36.5A/416.3W producing 1200 gr/42.3 oz of thrust.

    The pleasant surprise of the bunch is the very inexpensive Racerstar BR2306 2700 Kv (currently $8.99 USD from the Banggood China warehouse). A very significant increase in performance, although it might have to be watched for heat as the full throttle amp draw might push it a bit hard. Numbers for this motor with the 6x3 EMP prop again with the Turnigy AE-45A ESC with custom settings on 3S.

    50% throttle - 12.3A/153.8W producing 525 gr/18.5 oz of thrust;

    100% throttle - 37.1A/459.8W producing 1080 gr/38.1 oz of thrust.

    And the real scary beast of the bunch (this one was already scary enough with the 6x4 APC gas in the air ;)) is the SunnySky Edge R2305 2800 kv motor paired with the 6x3 EMP prop again with the Turnigy AE-45A ESC on 3S.

    50% throttle - 14.2A/172.5W producing 615 gr/21.7 oz of thrust;

    100% throttle - 40A/456.8W producing 1250 gr/44.1 oz of thrust.

    This is a 50 gr increase in thrust at 50% throttle and a whopping 185 gr increase (About 17.5% improvement) in thrust at full throttle while drawing about 5 less amps...Wow:) I'll be taking this out for a little spin very soon :)

    Cheers,

    Scott
     
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  17. Don't see mine listed yet, Racestar 2205 2600kv quad motor???? :D Just kidding Scott. You must have a million motors by now sitting on the shelf.

    Cheers
    Jeff
     
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  18. e3_Scott

    e3_Scott Top Gun

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    I have collected a few, still a few more on the way that I picked up on sale or just had to try, then I think that will be it for awhile :). Some are not terribly great performers as I made bad decisions when I started off testing quad motors trying to figure out what would work well as single motor in a prop in slot style park jet. A couple of others were just duds from the outset, as mentioned above I wouldn't buy use another DYS motor if someone gave it to me, just have not had good luck with their quad motors.

    The Racerstar motors have been a really pleasant surprise from a standpoint of price compared to performance. 2205 in my experience might be a bit small unless the plane is super light as it might have some decent speed, but not the torque to muscle through any wind or get a plane out of trouble unless the kv is really high like up around 2800.

    Cheers,

    Scott
     
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  19. Running twins on a special project and only a 3 blade 5x4 Dalprop Cyclone on 4S , weight was the choosing point.
     
  20. OldSchoolFlyer

    OldSchoolFlyer Airman

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    Made my test flight with the 2827 /3500kv QM-motor I used a 11.1v 2200 mah 25c battery a 5X3 prop and a skywalker 60amp ESC. The flight went very well ! I launched at about 50% throttle and a short 3-4 min flight to check heat. slightly warm motor and battery cool. Made a second for about 5 min at 75% throttle and did rolls, split S a nd low passes at a nice fast speed similar to a 2826/2200kv at 75%. I tried a vertical climbs at 100% throttle ( about 10 sec ) great acceleration and unlimited climb. Made a third flight and the battery was done. I think the 2200/3 cell would go about 10 min. I didn't try full throttle launch of more than 10sec at 100% but the flight were generally good with nice fast performance. I think try the engine at full throttle next. I will try the 4 cell battery next ?? What do you think ?? I think as long as I use the 5X3 prop the engine will be OK
     
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