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  1. #41
    RC Turnbuckle Jr.
    Join Date
    May 2008
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    Palm Beach
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    3,063
    Im thinking you may need to cut the red wire of one of your ESC's.

    Similar to what you would do when running a UBEC.
    be nice.

  2. #42
    RC Qualifier
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    Sep 2008
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    Edmonton, AB
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    I think I may try the electrical guru's over at RCM

  3. #43
    RC Turnbuckle Jr.
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    May 2008
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    Thats cool.

    Let me know if I'm right.


    If you have the red wire on both ESC's connected to a y-harness and plugged into your Rx, then both ESCs will try to Power the Rx. This is a bad situation for the ESC's. Thats why when you use a CC BEC, the directions tell you to disconnect the red wire from your ESC. This allows the UBEC to power the Rx without messing up the ESC.
    If you have both esc's plugged in (with the red wire connected) and you power one up, then the power will run through to the other one. One of your two ESC's will need to have the red wire removed. That will leave your servos and Rx to be powered by just one ESC. Its for this reason that people use an "unslow" harness when building a v-twin. This way the batteries on both systems will drain at the same speed.
    I see some reading in your future.
    Last edited by HoovHartid; 03-20-2009 at 06:57 PM.
    be nice.

  4. #44
    RC Qualifier
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    Sep 2008
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    Edmonton, AB
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    260
    heh I was building the unslow harness when I discovered this. Yes you were right hoov, Brian said the same thing. I just cut one of the red y-harness wires. It works like a charm now.

    I don't know what I've unleashed but I just ran the lipos through the charger and hooked em up. I may venture out this weekend with this monster I've created and put it through it's paces a little bit.

    Holding it above the ground in my hand, I bumped the throttle to see how both ESC's would respond Holy COW! this thing howls like a banshee. I also have a fairly easy throttle curve set up. and it was probably about 25% power if that.

    Its gonna be one wild ride. Picking up a GPS tomorrow probably borrow my buddy and his vid camera on sunday for a run or 2. if the weather stays un-snowy

  5. #45
    RC Turnbuckle Jr.
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    May 2008
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    Cool man! glad you got it worked out.

    I meant to write in earlier and tell you to cut the wire on one half of the y-harness so you can still connect the other ESC to the castlelink.

    or you can use a servo extension wire and cut the red on that.

    Just so you dont do any perminant cutting to your ESC.
    be nice.

  6. #46
    RC Qualifier
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    Sep 2008
    Location
    Edmonton, AB
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    260
    Well its finished and ready to rip. Only problem is the fresh snow on the ground

    It may not win any beauty pageants but that was a a lot of stuff to pack onto that chassis.

    to mount the battery tray covers I used the stock mounting holes for the vents. I drilled the holes out for 3mm screws since trying to find 2.5x~20mm screws isn't easy. Plus it would give them a little more strength.




    I thought keeping the side covers closed would be an issue at first but I found a work around for it. Drilled 2 holes in each cover for 4mm screws and drilled and tapped the top for 4mm. o-rings to secure.


  7. #47
    RC Turnbuckle Jr.
    Join Date
    Nov 2006
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    USA
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    3,138
    Very Cool Man!

  8. #48
    RC Turnbuckle Jr.
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    Dec 2007
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    Oregon
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    Wow a duel neu E revo that is vary scary I cant wait to see a video and how all the gears hold up.
    ⓘ ⓐⓝⓣ ⓣⓗⓘⓝⓚ ⓞⓕ ⓐⓝⓨ ⓣⓗⓘⓝⓖ ⓖⓞⓞⓓ ⓣⓞ ⓦⓡⓘⓖⓗⓣ ⓗⓔⓡⓔ

  9. #49
    RC Racer
    Join Date
    Feb 2009
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    100
    This build is amazingly crazy, The gearing you would be able to turn would probably bring you close to 85+ mph.....probably alot more......my goodness

  10. #50
    RC Qualifier
    Join Date
    Feb 2009
    Location
    Kansas
    Posts
    265
    Quote Originally Posted by HighKalibre
    Tentatively going to gear it 58/24 According to the speed calculator a single 1515 1y will do ~63mph, so 2......
    ....will be the same theoretical top speed. You have twice the power, not twice the RPM. You need to use the MOD1 pinions and spurs if you want to get serious.
    FLM EMBE / FLM Rustler / MERV / ERBE / Slash 4x4

  11. #51
    RC Racer
    Join Date
    May 2009
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    209

    How did it drive

    Hello,
    How did it drive?
    Is it drivable?
    Post a video

  12. #52
    RC Champion
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    Mar 2005
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    ◄Incognito►
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    1,580
    It's been nearly 5 months.....I get the feeling things did'nt go so well..
    (√) Zer0 tall-er-ance 4 stu-pid-it-deeeeee.

  13. #53
    RC Qualifier
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    Sep 2008
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    Edmonton, AB
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    lol, I never posted the video in here. It's lost in the high speed runs page. but here you go

    http://www.youtube.com/watch?v=QZdYV-NwvI4

    http://www.youtube.com/profile.php?do=editpassword/HighKali.../3/rkp2CpwWR80

  14. #54
    RC Racer
    Join Date
    May 2009
    Posts
    104
    ok I have to ask. how much time and money was involved?

  15. #55
    RC Qualifier
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    Sep 2008
    Location
    Edmonton, AB
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    260
    ummm time, I'd say ~8hour for the mods. probably 12 for assembly/dying.

    how much I spent well:
    1 MMM
    1tekno neu 1515 1y
    rpm a-arms.
    lunsford hinge pins, rocker posts.
    a set of shocks
    Center diff
    tranny, front and rear diffs.
    axles
    wheels, tires
    tekno axle carriers.

    its like 1500$Cad in parts probably

  16. #56
    RC Qualifier
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    Jun 2009
    Location
    Webster, New York
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    306
    you could probably get into the 80s or 90s with 2 6s packs and higher gearing.

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