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Thread: PS4002FK experiences

  1. #121
    Join Date
    Mar 2005
    Location
    Canton
    Posts
    201
    Nearly two tenths. I will be surprised If I get another podium out of it.
    "Ever onward."

    Nelson Swanberg

  2. #122
    Join Date
    Sep 2014
    Location
    Auckland, New Zealand
    Posts
    293
    Why persevere with it?


    Sent from my iPhone using Tapatalk
    listen, study, spy, try, research, invent

  3. #123
    Join Date
    Mar 2005
    Location
    Canton
    Posts
    201
    I am putting more emphasis on the retro CaAm class and I just want to see how long it will last. I do plan on replacing the brushes soon, however, I have never been a big fan of just replacing brushes without re-truing the com. We will see how it does.
    "Ever onward."

    Nelson Swanberg

  4. #124
    Join Date
    Mar 2014
    Posts
    27
    So far I have 6. races on my 4002 fk in a Gp 12 Wing car geared 14/38 on Marks Model Worlds G 19, the stock brushes still look good. and it hasn't slowed down... Average 280.25 laps a race and TQed once and top 3, 5 times. 290 laps in its third race. 2 off the track record. 1681 race laps so far plus practice!

  5. #125
    Join Date
    Jun 2002
    Posts
    625
    Mark, several have good runners. How many do you have and is this your best or just one you plugged in?.......
    Why make it tougher than it really is?
    e-mail: scrgeo@comcast.net

  6. #126
    Join Date
    May 2003
    Location
    Great Valley,NY
    Posts
    1,227
    Have you guys been running the stock springs?

    I tried both stock springs and brushes, and also BF and Gold Dust with Champion Lite springs.

    I think my best motors have been with the stock springs and brushes.

    These are really good motors right out of the bag.
    Don`t make it more complicated than it needs to be.

  7. #127
    Join Date
    Jun 2002
    Posts
    625
    Well, I have been told by those that I feel are knowledgeable, Some say change the springs and brushes , other say leave it stock. I think(IMO) the situation, is just like any other motor, they vary couple of tenths. That seems to be the one constant in slot motors. Appreciate the input......
    Why make it tougher than it really is?
    e-mail: scrgeo@comcast.net

  8. #128
    Join Date
    Jun 2002
    Location
    Wellington, New Zealand
    Posts
    4,487
    The rules here in New Zealand prohibit the changing of springs and/or brushes in PS4002FK motors.
    Zippity

    "Rules are written by FEAR; and that Racers are motivated by the Fear that somebody may have something that gives others an Edge." - Rocky Russo



  9. #129
    Join Date
    Feb 2003
    Location
    barrington, il.
    Posts
    972
    ha-ha on enforcing that!
    Racing now at Wanker Valley Raceway and awaiting puppies!!

  10. #130
    Join Date
    Sep 2014
    Location
    Auckland, New Zealand
    Posts
    293
    yeah its crazy. I can't understand why have a seal if you expect parts both in front as well as behind to be 'sealed'. Duh!?
    listen, study, spy, try, research, invent

  11. #131
    Join Date
    Dec 2007
    Posts
    426
    Many groups permit the the brushes and springs to be changed... The seal, glued endbell and screws are a deterrent to getting 'inside' the motor easily, as is done with the Retro Hawk and other internal brush FK motors...

  12. #132
    Join Date
    Mar 2014
    Posts
    27
    Rick, I have bought about 8 motors since we started our wing class in December. My best motor happened to be the second one I got I think you are right about motors in general being a couple tenths in difference. My guess is its just a better armature, I always figured if you gave me a choice between a really fast setup or a really fast arm, I would always pick armature. The application for this motor in a wing car is a little different than other classes because of the weight being around 62 grams and the fact that they are run at a constant high rpm without much braking. We have seen some failure in the stacks [throwing pieces off especially right next to where the balance holes have been drilled] Sometimes its hard to see because of the center strap of the can. And you only notice when you clean up your motor and see a piece of lamination stuck to the magnet. From my experience the stock parts work fine but the before you break it in,put clear nail polish on the seal glue in the end bell bushing, solder in can bushing ,check brush hoods for reasonable alignment. and hope its got a better than avg arm. With the wing cars your body can make the biggest difference of all. By the way my best motor is missing three pieces of lam on half of one stack but it doesn't seem to have much effect.. go figure.

  13. #133
    Join Date
    Sep 2014
    Location
    Auckland, New Zealand
    Posts
    293
    Post a pic of that arm Mark Proppe


    Sent from my iPhone using Tapatalk
    listen, study, spy, try, research, invent

  14. #134
    Join Date
    Mar 2014
    Posts
    27
    I dont think I can because you can barely see it with a 10 power magnifier at just the right angle because its under the center strap.

  15. #135
    Join Date
    Mar 2014
    Posts
    27
    If you are picking out motors try and stay away from the ones with huge dia. drill balance holes. it seems they drill to deep and wide into the stack and compromise the web a little bit.

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