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  1. #1

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    dazed and confused

    Hello

    I am new to the RC world. I recently purchased a Savage XS Flux off ebay. It came with a hobbywing SC8 ESC and a Gens Ace 5000m 50C 2S Lipo. So the truck has no motor. I also was given a couple of motors from a friend who has RC cars (One of those know it all types, but then nothing works out right)

    Hobbywing EZRun 3656 4700kv
    Hobbywing EZRun 4065 2700kv
    vector 4000 (person I got the truck from on ebay said to not use this motor)

    I have been reading and getting confused as to which motor and what gearing I should put into this truck.

    I plan on doing some jumping and climbing hills and racing iit around the track where my kid rides his dirt bike

  2. #2
    Community Moderators Foxy's Avatar
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    RE: dazed and confused

    You need a 550 (540 vs 550 is a motor type and refers to the length of the can, rather than the diameter. Basically, longer=more torque) to get the best out of that truck. 540s (as those you describe) will work, but they will overheat unless geared very conservatively.

    If you're looking for a cheap option, try this 550...

    http://www.hobbyking.com/hobbyking/s...550_size_.html

    Personally, I would be putting this motor in it...

    http://www.amainhobbies.com/product_...s-Motor-3800kV

    It's a 540, but its a 4-pole, so it make a lot more torque than a 2-pole 540 (most 540s/550s are two-pole unless otherwise specified, and a 4 pole 540 is every bit as strong (if not more so) as a 2-pole 550). All 1/8th type 42mm diameter motors are 4 pole or more, just for reference, though that isn't relevant to you.
    Down with the crew known to pump up the bass...
    We rock the joint at a cool, steady pace.
    Foxy
    RCU Community Moderator

  3. #3
    sparky 25's Avatar
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    RE: dazed and confused

    Not altogether sure that the longer 550 size motors will fit in the space allocated for a motor on the xs,

    I do agree with foxy on the castle 1410 3800kv motor, fantastic all round motor,

    I've tried a couple different motors in my xs,

    a toro 3650 3900kv was pretty close to the performance of the castle 3800kv but it would overheat towards the end of a 5200mah 2s lipo,

    Now running the castle 3800kv motor and the overheating issues are no longer an issue,

    Power and speed are just right for the truck,


    Its me is that you?

  4. #4
    redfisher1974's Avatar
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    RE: dazed and confused

    Not altogether sure that the longer 550 size motors will fit in the space allocated for a motor on the xs,
    This would be my concern as well ^
    Tamiya cc01, AE RC18R, HPI Savage Flux XS, HPI E-Firestorm Flux.

  5. #5

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    RE: dazed and confused

    so the:

    ezrun 4065 is4 pole, 65mm lengthand will not fit< spec
    ezrun 3656 is 4 pole, 56mm length< spec
    vector 4000 is 4 pole, 56mm length< spec


    Can not afford the castle and the turnigy I think will not fit with the cable plugged into it

    This leads me too go with the 3656, so what gearing should I do

  6. #6
    Community Moderators Foxy's Avatar
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    RE: dazed and confused

    Sorry guys, I was told that most 550s fitted when I looked into buying one. I don't see why the one I linked wouldn't fit (used without sensor), is it a length thing?

    I think the 4065 will be too big diameter-wise, the 3656 looks good.
    Down with the crew known to pump up the bass...
    We rock the joint at a cool, steady pace.
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  7. #7
    redfisher1974's Avatar
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    RE: dazed and confused

    You only have so much room unless you cut some plastic out.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Tamiya cc01, AE RC18R, HPI Savage Flux XS, HPI E-Firestorm Flux.

  8. #8
    redfisher1974's Avatar
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    RE: dazed and confused

    The 4000kv vector just fits
    Tamiya cc01, AE RC18R, HPI Savage Flux XS, HPI E-Firestorm Flux.

  9. #9
    Community Moderators Foxy's Avatar
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    RE: dazed and confused

    I see, so 56mm is your lot, that does rule out a lot of 550s...
    Down with the crew known to pump up the bass...
    We rock the joint at a cool, steady pace.
    Foxy
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  10. #10

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    RE: dazed and confused

    ok, it appears the pinion is 28t and the idler is 60t

    Is that ok for this setup, I do not want problems

    hobbywing 120a SC8
    Gens Ace 5000m 50C 2S Lipo
    EZRun 3656 4700kv

  11. #11
    Community Moderators Foxy's Avatar
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    RE: dazed and confused

    I would go for a lower kv version of the motor (the lowest, 3400kv if you plan to occasionally run 3S, which you will surely want to do, it makes the truck a real handful), but yeh, looks like a solid setup, you certainly shouldn't have any problems on 2S.

    EDIT: Now that I think about it, I heard changing the pinions is a real pain in the ass, so maybe if you plan to run mostly 2S go for a mid range kv motor, not the lowest. If you plan to run mostly 3S, then get the lowest.
    Down with the crew known to pump up the bass...
    We rock the joint at a cool, steady pace.
    Foxy
    RCU Community Moderator

  12. #12
    redfisher1974's Avatar
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    RE: dazed and confused


    ORIGINAL: Foxy

    I would go for a lower kv version of the motor (the lowest, 3400kv if you plan to occasionally run 3S, which you will surely want to do, it makes the truck a real handful), but yeh, looks like a solid setup, you certainly shouldn't have any problems on 2S.

    EDIT: Now that I think about it, I heard changing the pinions is a real pain in the ass, so maybe if you plan to run mostly 2S go for a mid range kv motor, not the lowest. If you plan to run mostly 3S, then get the lowest.
    Yes they are a lot of work to change, Just an FYI they did not loctite the grub screw at the factory and mine and a lot of others had the pinion fall off...
    Tamiya cc01, AE RC18R, HPI Savage Flux XS, HPI E-Firestorm Flux.

  13. #13
    cumminspower5.9's Avatar
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    RE: dazed and confused



    I keep seeing this thread and I think of Zeppelin lol

    -Aerodynamics and turbos are for people who can't build motors.

    Ofna LX2e-4s
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