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Mugen MBX7R Eco thread!

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Mugen MBX7R Eco thread!

Old 05-03-2017, 07:05 AM
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Did you seal the carbon towers before using them?
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Old 05-03-2017, 07:29 AM
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Originally Posted by samuelsonmark71
Did you seal the carbon towers before using them?
Yes I did, but with the abbrasive nature of the track, hardpacked dirt, every now and then it would fray once more.

They were nice, yet the Aluminum ones are just fine for me. Granted, never had an issue with the rear tower, but still running Aluminum for now.
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Old 05-03-2017, 07:44 AM
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I hear ya. I ran the CF towers on the Tekno Ebuggy back in the day and took them off after 2 race days.
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Old 05-03-2017, 08:29 AM
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has anybody used epoxy to seal CF towers?

Ideally the CF sheets will be laminated with epoxy...but because they seem to delaminate, they are probably using something different, maybe a polyester? There are lots of options, and they are all cheaper than epoxy.

I just know that epoxy is the ideal resin for "advanced" composites like carbon fiber and kevlar. These materials can be laminated with a non-epoxy resin, but the resin becomes the weakest link. Epoxy should be used to maximize the potential of the fabric.

You would want to use a thin epoxy (ideally laminating epoxy, but it's probably just weird that I have stuff like that laying around?). Also, heating it will make it flow better and cure faster.

I guess the idea of CA glue never felt like a good solution to me. I don't think it has the right characteristics to hold a laminate together? But obviously everyone has a bottle of the stuff, so it is easy to recommend.
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Old 05-03-2017, 08:53 AM
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Ebuggy the front carbon towers will break,nitro they last a long time. Big weight difference in the two
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Old 05-04-2017, 01:05 PM
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Its time to replace the pins in my dogbones. Does the Mugen tool work and is it worth the money or is there another way? Also what size pins? Also, I'm replacing my shock bladders since they are a couple years old now. Is everyone using stock ones or are there some super duper ones out there now everyone has? Thanks
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Old 05-05-2017, 07:35 PM
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Originally Posted by Matt1970
Its time to replace the pins in my dogbones. Does the Mugen tool work and is it worth the money or is there another way? Also what size pins? Also, I'm replacing my shock bladders since they are a couple years old now. Is everyone using stock ones or are there some super duper ones out there now everyone has? Thanks
I can't speak to the Mugen tool but I have the rcrenew tool and it works great. The pins on the universals are 13.8 and 12.8 on the center drive shafts but you can also buy 14mm and 13mm from other places, rcrenew sells those as well.
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Old 05-06-2017, 10:33 AM
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Which model is this? Thanks
Attached Thumbnails Mugen MBX7R Eco thread!-img_0705.jpg  
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Old 05-06-2017, 01:16 PM
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Originally Posted by highndry
Which model is this? Thanks
that's a mbx7r eco, maybe 2015/2016 because it doesn't have the universal drive shaft. i have the same car !

Last edited by werner sline; 05-06-2017 at 01:28 PM.
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Old 05-06-2017, 02:12 PM
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Thanks. Just picked it up for my son. Seems pretty robust
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Old 05-06-2017, 05:13 PM
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Cant seem to get the wheel nuts off. Am I missing something?
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Old 05-06-2017, 05:37 PM
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Originally Posted by highndry
Cant seem to get the wheel nuts off. Am I missing something?
The wheelnuts have serrations on the back side that dig into the wheel to keep them from coming loose. Sometimes they are in there very tight.

Use a 17mm socket and they should come off. Unlikely that they're cross threades.
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Old 05-06-2017, 06:28 PM
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Originally Posted by highndry
Cant seem to get the wheel nuts off. Am I missing something?
if that 17mm nut is really tight, you may damage the wheel ( i guess you re holding the wheel, right ? )
to avoid this, you may add a screwdriver through the universal joint

you may also hit the wheelnut with a light hammer : it may help loosening a bit !
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Old 05-07-2017, 11:01 AM
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Hey guys, just got a new kit and am wondering, has anyone else had missing or wrong parts while building theirs? A buddy just finished his and he was missing diff shims, and I just found out they sent only one straight turnbuckle end and three angled ones. Not a big deal, just interrupts the build and kind of a bummer. I've built quite a few kits from tekno, Durango, and associated and am very organized with keeping my parts together. Is this been something others have experienced?
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Old 05-07-2017, 02:59 PM
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Originally Posted by werner sline
if that 17mm nut is really tight, you may damage the wheel ( i guess you re holding the wheel, right ? )
to avoid this, you may add a screwdriver through the universal joint

you may also hit the wheelnut with a light hammer : it may help loosening a bit !
Thanks. That worked..just had to lean on it a little.
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