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  1. #1
    RC Racer Magnus001's Avatar
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    Mar 2017
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    British Columbia
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    239

    Big motor top speed

    I know there are a couple threads here about speed runs, but I can't find anything specific to guys that run the big motors, like Leopard or Castle. I'm curious what kind of top speeds you get with those motors on 8s. And what pinion/spur gear combos do you use?
    With my current combo of 32/46 gearing, my 1090kv on 8s goes 52mph.
    V1 6s w/8s conversion
    Max5 Leopard 1090kv

  2. #2
    RC Racer
    Join Date
    Aug 2013
    Posts
    161

    Big motor top speed

    Iím running the Leopard 58113 V2 1050KV on 8s with 35/50 gearing and itís too fast. So fast that it flips over backwards from air getting trapped under the body creating a parachute effect. And that is with throttle to spare! It must be doing 70-80mph easy.
    I just ordered a 32t pinion and Iím going to change the spur to 54t. Hopefully that will slow it down enough to keep it on the ground!
    Last edited by pontiacHP; 01-18-2018 at 07:17 PM.

  3. #3
    RC Racer
    Join Date
    Apr 2011
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    196
    This is mine. Look at youtube for info.
    Last edited by painter; 01-18-2018 at 08:28 PM.

  4. #4
    RC Racer Magnus001's Avatar
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    Quote Originally Posted by painter View Post
    This is mine. Look at youtube for info.
    With your 54/29 setup going 85 kmh (52.7mph) You & I would have a good race!
    V1 6s w/8s conversion
    Max5 Leopard 1090kv

  5. #5
    RC Racer Magnus001's Avatar
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    Quote Originally Posted by pontiacHP View Post
    I’m running the Leopard 58113 V2 1050KV on 8s with 35/50 gearing and it’s too fast. So fast that it flips over backwards from air getting trapped under the body creating a parachute effect. And that is with throttle to spare! It must be doing 70-80mph easy.
    I just ordered a 32t pinion and I’m going to change the spur to 54t. Hopefully that will slow it down enough to keep it on the ground!
    That's crazy! Either the 58113 motor is alot more powerful than the 5892, or I'm doing something wrong.
    V1 6s w/8s conversion
    Max5 Leopard 1090kv

  6. #6
    RC Turnbuckle Jr. ReglarGuy's Avatar
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    Feb 2012
    Location
    Eastern Shore, Maryland
    Posts
    4,703
    I run a Leopard 1340kv, updated Castle XLX-1, 54 spur, 29 pinion and 6s. I get 50 plus mph.
    Life's to short to be a sour puss.

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