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Thread: 1515/2.5d

  1. #1
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    1515/2.5d

    I acquired this 1700kv Nue at a price i couldn't refuse....I don't see many people using it..is it not a good motor for speed runs or racing in a converted revo?...anyone here using this motor?
    MMM is giving new meaning to "Make Em Cry

  2. #2
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    It's a good motor. If you don't want it sell it to me for $150 . You still made $50 .
    Brushless Emaxx
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  3. #3
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    For speed runs I would say no compared to a higher KV motor. For racing though, I would say medium sized tracks on 4S it could work fine. I am finding that my gearing on my 2050Kv motor on 4S gets around the track best at 30 - 35mph setup right now for small to medium tracks. Large tracks, would go with a 40 mph gearing setup.

  4. #4
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    I would run a 1700kv motor on 5 or 6s lipo to get good speed, runtimes and temps- not really a speedrun motor, unless you had a high voltage setup, like 8s or so.
    READ THE FAQ!
    or else.....

  5. #5
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    I have a 1515/2.5D on order. It's actually not 1700Kv but 1650Kv. Anyways I am to use 8S LiPo yes. :-) Can't wait to get it! The motor can handle 10S but I suppose it's not a heat problem with 8S so no point in using 10S then.

  6. #6
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    Im guessing you have an MGM esc to use with this, should be a beast of a setup.
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  7. #7
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    Quote Originally Posted by benredick
    I have a 1515/2.5D on order. It's actually not 1700Kv but 1650Kv. Anyways I am to use 8S LiPo yes. :-) Can't wait to get it! The motor can handle 10S but I suppose it's not a heat problem with 8S so no point in using 10S then.
    is this in an e-revo? where are you shoving in 8s?!?

    I posted this the other day as a joke, but maybe your truck looks something like this?
    be nice.

  8. #8
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    Quote Originally Posted by HoovHartid
    is this in an e-revo? where are you shoving in 8s?!?
    rotfl, nope I have got two 4S LiPo packs from MaxAmps nicely positioned in the battery compartments. The hole point of going HV is reducing amp usage getting lower temps but still getting the same effekt and run time for that matter. With the right setup it's even more effient. Not many has understood this point fully.

  9. #9
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    benredick,
    PM sent. dont wanna thread-jack on bustitup anymore


    bustitup,
    that is the motor that impakt recommended to me when i told them i was planning to run on 6s.

    actually, MANY people recommended that motor to me for 6s.

    it was only after seeing 1fastrevo/stumblin's set-up (1.5D) that I decided to split the difference. I sent it back for the 1Y and figured I would run mostly on 4s, with the occasional speed bash on 6s.


    busted MMM is killing me
    Last edited by HoovHartid; 08-09-2008 at 03:32 AM.
    be nice.

  10. #10
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    Quote Originally Posted by HoovHartid
    benredick,
    PM sent. dont wanna thread-jack on bustitup anymore


    bustitup,
    that is the motor that impakt recommended to me when i told them i was planning to run on 6s.

    actually, MANY people recommended that motor to me for 6s.

    it was only after seeing 1fastrevo/stumblin's set-up (1.5D) that I decided to split the difference. I sent it back for the 1Y and figured I would run mostly on 4s, with the occasional speed bash on 6s.


    busted MMM is killing me

    hoov your not jacken my thread I want to learn also.......I want to know how hes got twin 4's fitting in there too
    MMM is giving new meaning to "Make Em Cry

  11. #11
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    Quote Originally Posted by HoovHartid
    it was only after seeing 1fastrevo/stumblin's set-up (1.5D) I would run mostly on 4s, with the occasional speed bash on 6s.

    this is the reason I'm not sure I want to use the 1515/2.5d....after seeing how good there trucks run on 4 and 6

    btw ...I just live about 20 miles north of you we need to get together sometime
    MMM is giving new meaning to "Make Em Cry

  12. #12
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    Quote Originally Posted by BUSTITUP
    this is the reason I'm not sure I want to use the 1515/2.5d....after seeing how good there trucks run on 4 and 6

    btw ...I just live about 20 miles north of you we need to get together sometime
    cool man, where abouts? Jupiter/Indiantown?

    Quote Originally Posted by BUSTITUP
    hoov your not jacken my thread I want to learn also.......I want to know how hes got twin 4's fitting in there too
    cool man, just wanted to be sure...

    He's running two MA 4s 3000's in a series for 8s 3000mAh
    they measure 44mm X 137mm X 22mm so they should fit with room to spare.
    be nice.

  13. #13
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    Hoov

    I live in Jupiter farms and have some nice terain to speed run or bash on very close....you must use Nitro Toyz now and then for parts?
    MMM is giving new meaning to "Make Em Cry

  14. #14
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    Quote Originally Posted by BUSTITUP
    Hoov
    you must use Nitro Toyz now and then for parts?
    yup, them, RC-Revolution, and Crafthouse until recently...the owner killed herself... weird.
    be nice.

  15. #15
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    do you have a truck running or are you dead in the water
    MMM is giving new meaning to "Make Em Cry

  16. #16
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    Quote Originally Posted by BUSTITUP
    do you have a truck running or are you dead in the water
    just my rc18T

    and I have a tc4 i race at a local park
    be nice.

  17. #17
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    The 2.5D is a great motor. Awesome track motor on 5S, and would be blistering fast on 6S. RCMonster Mike runs 2.5Ds on his truggs on 5S.

    I am getting 50mph on my trug on 5S, but I need to gear down a bit as its too fast. 45 would be great. I would run a 2.5D on 6s a million years before I would run a 1.5D on 4S.
    36 Volt ERevo: Neu 1515/2Y-MGM9032-10S A123 :)

  18. #18
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    I glad someone agrees with me
    READ THE FAQ!
    or else.....

  19. #19
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    I bought a 1.5d to see how it was on 4s. I hate it, runs so hot you might as well buy a Fiegao 7xl and save some money, waste of $250, hopefully someone on ebay will like it.

  20. #20
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    Quote Originally Posted by jayjay283
    I bought a 1.5d to see how it was on 4s. I hate it, runs so hot you might as well buy a Fiegao 7xl and save some money, waste of $250, hopefully someone on ebay will like it.

    jay it sounds like your saying I should keep my 1515/2.5d and run on 6's to run around 40-45 and run cool on a race track......what gearing should I start with 24/68?
    Last edited by BUSTITUP; 08-10-2008 at 03:59 PM.
    MMM is giving new meaning to "Make Em Cry

  21. #21
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    24/68 is good and you can go up from there for speed if wanted, Im driving a 1Y on 5s with 24/65 and it stays real nice and cool, not over 135-140

    edit. 2.5d is a great motor , Ill trade you my barely used 1.5d for your refurbed 2.5d lol
    Last edited by jayjay283; 08-10-2008 at 04:13 PM.

  22. #22
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    Quote Originally Posted by BUSTITUP
    jay it sounds like your saying I should keep my 1515/2.5d and run on 6's to run around 40-45 and run cool on a race track......what gearing should I start with 24/68?

    FYI.

    I couldnt get 24/68 to fit my motor mount...

    You could do it, if you grind the plate, but I'm not into that.

    I took some measurements with the pinions and spur I had in stock and posted the results here;
    Post #6;
    http://monster.traxxas.com/showthrea...79#post3493179

    If you want to run a drive ratio similar to 24/68, I recommend 22/62
    62/22 =2.82
    68/24 =2.83

    *edit*
    56/20 gives a 2.80 which is close as well.
    Last edited by HoovHartid; 08-11-2008 at 01:39 AM.
    be nice.

  23. #23
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    Quote Originally Posted by HoovHartid
    Quote Originally Posted by BUSTITUP
    hoov your not jacken my thread I want to learn also.......I want to know how hes got twin 4's fitting in there too
    cool man, just wanted to be sure...

    He's running two MA 4s 3000's in a series for 8s 3000mAh
    they measure 44mm X 137mm X 22mm so they should fit with room to spare.
    For longer runtime one can always use the MA 4s 4000's in a series for 8s. The measure 44mm X 137mm X 26mm and fit just fine them too.
    E-Revo Neu 1515/2.5d on 8S LiPo

  24. #24
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    Quote Originally Posted by BUSTITUP
    jay it sounds like your saying I should keep my 1515/2.5d and run on 6's to run around 40-45 and run cool on a race track......what gearing should I start with 24/68?
    24/68 doesn't fit but 22/62, which has equal ratio, will give you 41 mph with your setup.
    E-Revo Neu 1515/2.5d on 8S LiPo

  25. #25
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    I've got one 2.5d lying around here as well. I had a 2500kv motor on 4s and really this thing is awsome... but simply draws too much current (170+ on full throttle, not even peak). So I decided to go with a less kv motor and switch to 6s. The 2.5d seemed to be the perfect choice.

  26. #26
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    I have one too. If you look at the motor calculators you will find that a difference in Kv (all else being equal) just means you need to gear accordingly and you will have the same (within a few percent) performance. I run a 6S 5000 mAh Lipo setup.

  27. #27
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    Okay, I am trying to wrap my mind around the concept being discussed here. I understand that 8s will run cooler than 6s etc.. but I have yet to have any heat issues with my 1.5d at 4s, nor 6s.. To me the Neu motors run plenty cool at insane speeds at those voltages, are readily available etc. etc. So why spend the extra money for an 8s setup that runs cooler, when the 6s setup runs pretty cool as it is? I realize there's always room for more speed, but it seems like with minor gearing changes, weight adjustments we are pretty much reaching the terminal velocity of a 11 pound truck at 6s?
    Reformed nitro operations specialist..

  28. #28
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    I raced the 2.5d on 4s and on two med tracks and it is reasonable, if not very good. Ideal voltage racing w/ a 2.5d is 5s though and will be a phenomenal setup like that. 6s geared down will also be sweet, no more than 45mph but ideal on most tracks is ~40.

    8s (29.6v) * 3000mAH = 88800
    4s (14.8v) * 8000mAH = 118400

    Don't mean to throw a monkey wrench but the 4s lipo setup will yeild longer run times than an 8s 3k setup, the 8s setup would be a little cooler running if that were actually a problem, but w/ a Neu it's NOT a problem.

    Actually for an 8s setup to have the same or more effective run time as a 4s setup you would need a pair of 4s 4k packs anything less wouldn't out last the 4s config.

    4s 8000mAH = 6s 5333mAH = 8s 4000mAH for uptime geared for the same MPH in a similar config provided the 4s doesn't hit an early LVC and you get the full pack. The 8s setup w/ less amp draw would have the least issue getting the full mAH. So on 4s lipo just make sure you have an adequately rated pack (c rating) for your draw.
    Last edited by 8ight-e; 01-15-2009 at 09:55 PM.

  29. #29
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    Don't forget it's not just the heat issue. Higher voltage setups have lower current for a given power. Lower currents mean lower losses for everything in the setup, from the motor and batteries to the connectors and wires. So energy density being equal (like 4S 8k mAh = 8S 4k mAh) the higher voltage setups have the advantage in lower losses, which means potentially greater speed, less heat, or longer run times. The difference can be small, but it's there.

  30. #30
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    Quote Originally Posted by HoovHartid
    is this in an e-revo? where are you shoving in 8s?!?

    I posted this the other day as a joke, but maybe your truck looks something like this?
    Lol, looks like a suicide bomber on wheels!
    HB Ve8 w/ tekin (AWESOME)
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