Mugen MBX7R Eco thread!

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  • Quote: Having a weird issue with my steering and want to see what people think. I'm running the sidewinder system so was running with the esc bec before which is 5.5v. Steering was pretty weak and slow with my hitech 7954sh.

    Last night I wired up a castle 10a bec to it set at 7.4v and now the speed of the servo is much better, however it's getting much more torque turning left (pushing the linkage) than turning right (pulling the linkage).

    When pushing the linkage if I hold the wheel straight the servo will completely overpower the servo saver and rotate the top half about 30 degrees. However when pulling the linkage if I hold the wheel straight it will not overpower the servo saver at all, maybe a couple degrees.

    Anybody else experience this? Seems to me that I should have the same steering torque in both directions. Haven't swapped out the servo yet to check my spare.
    I've had that problem several times over the years. For me it has been the servo going out. Had a couple of KO and one futaba do it. Servo works fine just low torque in one direction. I bet if you disconnect the steering linkage and hold the servo arm by hand you will feel it stall out sooner in one direction. Unless that is you have a lot of binding in your steering to one side.
  • anyone run the turctite pillow ball retainer bushings? if so do they help or just make you feel better that youre using them lol
  • Quote: anyone run the turctite pillow ball retainer bushings? if so do they help or just make you feel better that youre using them lol
    You should be using that bushing.. Are you talking about the stock bushing?
  • Quote: anyone run the turctite pillow ball retainer bushings? if so do they help or just make you feel better that youre using them lol
    I've tried them. Only difference I felt was my wallet was lighter.
  • Quote: Well done.
    thank you
    It's so much fun to see this buggy whip around in the air in slow mo !
  • Hi all - on the directional shock bottom eyelet - on the rear of the car should the shock be mounted most inboard, or outboard?

    Manual shows inboard (so wider part of eyelet to the rear) but Inhave always been verbally told the opposite!?
  • i choose outboard !
  • i finally mounted the xray xb8e lower arms on my mbx7r eco
    i used all the other stock parts

    for hard bashing, the stock arms are really weak. i broke 4 of them quickly ! I know the xray plastic from my xt8 truggy and I like their composite : it flexes just like it should

    so the xb8e arms can be mounted without any mods ! a direct fit ! and probably a direct fit for the RCB8e and the ARMA typhoon ( but i can't verify ! )
    wheelbase is the same, shocks position is identical, swaybars fits in well
    the only tiny difference is that the xray arm is 2mm shorter. So you will need some shims to get some negativ camber.



  • the stock arm stacked on the xray arm : notice the 2mm difference in length
  • Hey guys. First time poster on the site, but I've read numerous pages on this thread thus far. I'm getting the mbx7r eco here as soon as my LHS can get it back in stock. I wanted to ask if you guys had any tips on building the kit itself.
    I'll be putting in a Tekin 2050kv and a RX8 gen 2.
  • NitroHouse has the MBX7R Eco in stock, $519 free ship.



    Quote: Hey guys. First time poster on the site, but I've read numerous pages on this thread thus far. I'm getting the mbx7r eco here as soon as my LHS can get it back in stock. I wanted to ask if you guys had any tips on building the kit itself.
    I'll be putting in a Tekin 2050kv and a RX8 gen 2.
  • Quote: NitroHouse has the MBX7R Eco in stock, $519 free ship.
    Thanks for that! Unfortunately I have already committed the funds and ordered through my LHS. I had been looking around for awhile trying to find one in stock. Went to the hobbystore and they said they could order it for me. Even gave it to me for that exact price!
    It should be there in a few days last they called.
  • here a vid with a bunch of mbx7r eco crashes :
    https://www.youtube.com/watch?v=loE1ERXnqE0

    front lower arms are from a hobao hyperstar. front and rear lower arms arms reinforced with a steel sheet
    the rest is quite stock and holds very well.
  • Optional 40g weight E2420
    I noticed on Drake's setup sheets that he notes the "40g weight in rear". Mugen makes the 40g chassis weight (part E2420), but on the item page on Amain is says that it only mounts to the "rear of the front gearbox" on the eco.

    Does anybody use this weight on the eco?

    Can it be mounted on either gearbox? If not, where does Drake mount it?