Mugen MTX-4

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  • So, here in Germany is still winter and today it begans to snow. So I decide to start building my MTX-4 for the season 2007.

    The production day of the car was June 2006. You find the production day on a sticker which is on the bag of the parts.

    What I also found out, that they have changed the belt tensioner. It`s know on the left side. They also changed the inside of the fuel tank.







    The only hopup parts I use are the Ti-screws and the front universals. Of course I will also use the rubber belts, because there run smoother than the urethan one.



    First, I started to clean the bearings. Just open it, put out all the grease and lubricate it with good bearing oil.
    Then I started to built the rear diff. When you built the diff like shown in the manuel, you will noticed, that the "axle" (im not sure if its called axle ) has some gap. I put 2x 0.20mm shims between the diff and the "axle", to minimise it.

    Before:


    After:


    As writen before, I removed the s3 o-ring. And like A-I, I use some oil to lubricate the s5 o-ring, before installing. I use the 30.000 mugen oil in the rear diff and the most time at the front a solid axle.



    So, that was day 1... ok, not very much, but I have time before I start racing
  • nice picture, I always love to see how people asssamble their car. keep them up please
  • Hey jaykay,

    When you say the belt tensioner is now on the left side what do you mean? I'm also building my kit. I think it's an older version that had been in the hobby shop for a while.

    Thanks
  • Quote: Hey jaykay,

    When you say the belt tensioner is now on the left side what do you mean? I'm also building my kit. I think it's an older version that had been in the hobby shop for a while.

    Thanks
    he means its fipped over, closest to the front of the car.
  • Quote: Hey jaykay,

    When you say the belt tensioner is now on the left side what do you mean? I'm also building my kit. I think it's an older version that had been in the hobby shop for a while.

    Thanks
    What it is, is that the slot is now on the left side instead of being on the right. See below.

    New Part (T0275):



    Old part (T0257):

  • Thanks for the quick replies.

    So I've got an older version. What else has been upgraded.
  • Based on what was posted at ProShop Futaba's Web site (Japanese), it appears that only the tank and tensioner plate were changed, as shown above. The updated kit was available in August 2006 in Japan. Same kit part number.
  • when I first assamble my MTX 4 I notise if I reverse teh tensionor as the updated one, my belt was press down enough to have clearance against my pipe unless the belt is a bit too tight.

    please show me what it on your car. I need to know
  • ***
  • carbreaker, thats truth, you have to press it down more when you flipped it to the left side. I think it will be the same with the new part. We will see

    Yes, im keeping up this foto story. But this will be a llllllllooooooooooooonnnnng way.
  • it worth the waiting
  • Quote: Based on what was posted at ProShop Futaba's Web site (Japanese), it appears that only the tank and tensioner plate were changed, as shown above. The updated kit was available in August 2006 in Japan. Same kit part number.
    I have a brand new kit straight from mugen 2 weeks ago. I too have the new tensioner.

    I wonder what else might be new but its harder to see.
  • brand new mugen mtx4 still in shrink rap box. bought it two weeks ago, decided to stay with rrr. will sell for $390 shipped (US Only).
  • Very sat to see Mugen Joe running a Kyosho!
    It just seems SO WRONG!!!
  • Quote: Very sat to see Mugen Joe running a Kyosho!
    It just seems SO WRONG!!!
    true, i hear you on that. but from what i have heard, you have to get so many hop ups to make it run good and they are hard to find, its just not worth the hastle!!!

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