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Thread: My RWD solid axle front engine Escort MK2 build

  1. #341
    Join Date
    Feb 2014
    Location
    Quebec, Canada
    Posts
    634

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    So I finished mounting the 380 sized motor, put batteries in and took it for a ride at the park :) See how small compared to a stock motor.







    It did not go very well, it overheated severely after a few minutes drifting in the gravel. I was not really surprised, I thought for the 6$ they asked for the motor I could just try it. It did not actually burn in flames, but it overheated so much that the magnets got very weak and loss a ton of power. It had decent power for drifting in the gravel initially, but could not handle it for a long time. So I undid the front half to extract the motor, and put back the Tamiya Sport tuned.








    And while at it I actually attached the tranny with nuts instead of just a bolt with tape :)






    Went for a ride with the Sport tuned, and I overheated that one too! Maybe I was just a bit to eager on the throttle. I have undone the front half again and I'm in the process of installing the brushless Castle 3800kv, I plan to configure a limit torque to try and avoid overheating. What do you guys think? The car is probably near 4.5 lbs currently. Is the 3800kv able to handle this safely? I'm on 2s lipo saddle packs.







    Video of the ride with the Tamiya motor:



  2. #342
    Join Date
    Aug 2014
    Location
    Smithfield, RI USA
    Posts
    2,415

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    This just keeps getting better and better... and this thread is now at 35 pages.

    I love following this.
    smallfactorystudio on instagram / lone wolf / doer of many things

  3. #343
    Join Date
    Feb 2014
    Location
    Quebec, Canada
    Posts
    634

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    Quote Originally Posted by Small Factory View Post
    This just keeps getting better and better... and this thread is now at 35 pages.

    I love following this.
    Thank you Small Factory! Slowly but steady :)

    Just fixed the picture links, I forgot to embed them the first time. Thanks for following along!

    Fred

  4. #344
    Join Date
    Jun 2016
    Location
    Macungie PA
    Posts
    1,393

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    very nicely done.

    Wes

  5. #345
    Join Date
    Feb 2014
    Location
    Quebec, Canada
    Posts
    634

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    Quote Originally Posted by wesmade View Post
    very nicely done.

    Wes
    Thank you Wes! It is a blast to drive it with plenty of space, since it is a handful to drive it is easier to learn the car. It slides with more stablility at near WOT, and it’s easier to practice that in the open space than on narrow track

    Frederik

  6. #346
    Join Date
    Dec 2017
    Posts
    1,387

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    Looks great in the gravel!

    Very Escorty!!

  7. #347
    Join Date
    Feb 2014
    Location
    Quebec, Canada
    Posts
    634

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    Quote Originally Posted by dagabba View Post
    Looks great in the gravel!

    Very Escorty!!
    Thanks dagabba! It gets some cool Escorty drifts for sure!

    So now that I overheated the Tamiya sport tuned motor, I installed the castle 3400kv 4 pole motor. I had to drill a hole through the firewall to pass the motor wires and also the servo cable while at it. Much cleaner! The motor wires used to run under the car along the transmission tunnel, and back up in the car behind the bumper (there is no actual bumper yet lol).

    It is pouring rain now so I can't really go try it out.. But I also have a problem setting up the current limit on the castle ESC. It needs to perform a kV test before I can activate the torque limit, but the test does not run correctly.. I will try some more today.

    Edit: I also added a heatsink I had laying around, and I am pondering the idea of cutting away the grille and making it functional, not sure from which material. I have some grille material but it is not the right type for this, Escorts have grilles with horizontal lines, mine is diamond shaped... Also by the way the MK2 body is now cracked, I think my son hit me at some point with the lunchbox or with the other Tamiya truck. With metal behind the body, you can't really hit something hard haha :) So I guess it is now set that the MK2 will be the beater body and the MK1 will be the display one!







    Edit 2: I was just able to do the torque limit test, I had the theottle epa not set to 100% and it is required for the test. I set the torque to minimum as a first test. Also I cut the two small openings below the grille, but then thought it will not be sufficient, so I went and cut the whole grille off. I think it did not look very scale at all anyway, at some point I can remove what is left and put a complete grille with working headlights.

    Now air should flow pretty good! With that and the brushless with torque limit, overheating should be solved.



  8. #348

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    Hi Fred,

    Ive only recently come across your build and i am certain that it is the best build i have seen so far. you craftsmanship is incredible. after reading some other threads and yours ive been met with a single question; "what gear box is this man using?!".
    I have been inspired to make a caterham/lotus 7 custom and the only part i am missing is the gearbox and yours looks perfect!

    Probably a stupid question,

    -Adam

  9. #349
    Join Date
    Feb 2014
    Location
    Quebec, Canada
    Posts
    634

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    Quote Originally Posted by LandyMan View Post
    Hi Fred,

    Ive only recently come across your build and i am certain that it is the best build i have seen so far. you craftsmanship is incredible. after reading some other threads and yours ive been met with a single question; "what gear box is this man using?!".
    I have been inspired to make a caterham/lotus 7 custom and the only part i am missing is the gearbox and yours looks perfect!

    Probably a stupid question,

    -Adam
    Hello Adam! Thank you for the nice comments, I'm glad you like it! There are lots of more detailed scale trucks and cars out here, but I do like the mechanical engineering part of it so I guess that's why I put lots of energy on that part. Now I need to concentrate on detailing the body and the interior, I'm a complete noob for that, I have never done it before except for some regular functional lexan painting lol

    For the gearbox I actually stole Preston's idea (Trini2dBone) on his own RWD Escort MK2 build. He was the inspiration for my build like back in 2013 lol You can find his build I think here on SBG and also RCUniverse and scale4x4rc.

    The gearbox is intended for an electric airplane, gearbox is called Great Planes ElectryFly GD-600. I just removed the propeller attachment (it is held by setscrews on the shaft) and trimmed some of the plastic so it fits the transmission tunnel, again just like Trini2DBone did.

    Thanks again for chiming in!

    Frederik

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