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Thread: Graupner vs DJI props

  1. #1

    Graupner vs DJI props

    Here is a few photos showing the difference between the Graupner 10x5 E-Prop and the DJI 10x4.5 prop. On the Graupner the blade surface is less but angle greater and could explain the higher rpm needed to maintain a hover, but it provides a much smoother flight, at least on a TBS Discovery.

    The DJI props are imfamous for being soft and spongy, and is known to break mid-air because of tracking issues on >1kg crafts. Both have 8 mm bore which makes it easy to Graunpers on DJI motors.

    Click image for larger version

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    Last edited by ivc; 19th August 2012 at 06:49 AM.

  2. #2
    Pro Procrastinator DrunkDragon's Avatar
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    Can't beat graupner - unless you have the money for XOAR carbon fibre precision pairs.

  3. #3
    Pilot Kevinv033's Avatar
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    The xoar are nice! You're right, though, for the $$ Graupner can't be beat.
    youtube.com/user/kevinv033
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  4. #4
    Navigator Bear Pants's Avatar
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    I wish I could find counter rotating graupners in the usa..

    I may go with these
    http://www.hobby-lobby.com/electric_...ortBy=p.sortby[comma]p.name[comma]p.number,productsPerPage=50

    but there are no counter rotating. We are stuck with shitty props here I guess.

  5. #5
    Pilot Kevinv033's Avatar
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    RC-drones.com has graupner. Email them first. Just got a some sets this week.
    youtube.com/user/kevinv033
    vimeo.com/kevinv033

  6. #6
    Navigator Bear Pants's Avatar
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    Quote Originally Posted by Kevinv033 View Post
    RC-drones.com has graupner. Email them first. Just got a some sets this week.
    I'll do that. Thanks Kev.

  7. #7
    Pro Procrastinator DrunkDragon's Avatar
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    Guys hit up electric wingman, he's UK based and has a truckload of stuff. Reasonable cost and fast shipping. Carries a wide range of graupner.

  8. #8
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    The Elektro props DO need to be bored out to fit the DJI motors as they come with a stepped centre hole to match various shaft sizes.

    I have a hand held reamer that I attached to my hand drill, that way you can bore them out in about 5 seconds flat

  9. #9
    KB3WHA kenkos68's Avatar
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    Has anyone run the Graupner 10x5's on the AX2213's with 4 cells? I know they draw less current than APC 10x4.7's. I have a pile of 4S4000's that I can use with my Tri if running the 10x5's uses < 18amps per motor. My AX2213's are rewound so I know it will take up to 18 amps.

  10. #10
    I see you... Derrick's Avatar
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    Anyone have any empirical data?

    RPM
    Thrust
    Current Draw
    Voltage

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