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Old 12-13-2015, 12:30 PM   #1366
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Hi! Could somebody do me a favour and measure (to 0.1 mm) the distance between the diff/motor-mount plates?
you mean the place the center diff actually takes ?
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Old 12-13-2015, 12:45 PM   #1367
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werner sline: yes, assuming the bearings sit exactly flush, the space between the diff bearings, what could be called the installation length of the differential.
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Old 12-13-2015, 03:03 PM   #1368
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werner sline: yes, assuming the bearings sit exactly flush, the space between the diff bearings, what could be called the installation length of the differential.
between the tower that hold the ball bearing, you got 32.9mm max

I also took those pictures. you should have more infos and read the dimensions

22.4mm :



might also be usefull :

22.1mm and 32.5mm ( the bearings can slide quite a lot on the diff outdrives. so mugen let some space between 32.5 for the diff and 32.9 between the towers )




Last edited by werner sline; 12-13-2015 at 03:13 PM.
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Old 12-13-2015, 07:43 PM   #1369
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Hairy muffin- when will we be able to pick up f/r uni's.
No date as of yet,but really soon
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Old 12-13-2015, 07:51 PM   #1370
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aluminium front arms will break anyway : to stop a 3.6kg car, you need to absorb the hits so you need flex
My hobao arms ( with steel bandage ) can be bashed very hard because they flex

but on a racing car, you don't want too much flex, that's the difficulty.

About xray : they flex a bit, that's why they are more durable, and that's why xray adds carbon plates on them !!

let's see how they designed the mbx8 arms
I know, but some guys are willing to take that chance because they think the mugen arms are the weakest in the business.. Whenever a new mugen buggy comes out, I doubt they will change the arms,mugen has run the same design for well over 10 years... it's only an issue for guys that have hard crashes,which kinda sucks for the little guy... I hear hb has really good arms

Last edited by hairymuffin; 12-13-2015 at 08:02 PM.
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Old 12-13-2015, 11:17 PM   #1371
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hmm, I had a hard crash yesterday and my front arm survived a pretty rough crash, i hit hard enough to bend my sumo front skid plate and it also bent the rear front hinge pin brace back some
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Old 12-13-2015, 11:26 PM   #1372
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by chance, would anyone have that lil piece that the transponder mounts to xtra they would like to sell? I bought a used MBX7R eco and for some reason it wasnt on there. I really dont want to buy a plastics replacement kit just to get that lil piece if I can help it lol
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Old 12-14-2015, 12:32 AM   #1373
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werner sline: Awesome, thank you very much!
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Old 12-14-2015, 07:47 AM   #1374
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by chance, would anyone have that lil piece that the transponder mounts to xtra they would like to sell? I bought a used MBX7R eco and for some reason it wasnt on there. I really dont want to buy a plastics replacement kit just to get that lil piece if I can help it lol
It's better off inside your receiver box,the wires will last longer..works perfect in there
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Old 12-14-2015, 12:17 PM   #1375
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werner sline: Awesome, thank you very much!
by the way , what do you want to do ?

I will soon try a eb48.2 diff in a mbx7r. it's lighter but, I think the mugen diff works better ( it has more oïl and bigger pinions )
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Old 12-14-2015, 01:13 PM   #1376
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werner-sline: convert a CEN Matrix. The Mugen is one of 3 buggies with a motor/diff mount to my liking, strange as it may seem to put high-end stuff on that platform. Got a nice deal for RC8B diff and wondered if it could be compatible. Seems like it should. Though the next nice deal already happened for a Serpent mount, so I'm about to learn the hard way if that fits (or if I have to consider fabricating a new cover piece)
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Old 12-14-2015, 02:16 PM   #1377
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werner-sline: convert a CEN Matrix. The Mugen is one of 3 buggies with a motor/diff mount to my liking, strange as it may seem to put high-end stuff on that platform. Got a nice deal for RC8B diff and wondered if it could be compatible. Seems like it should. Though the next nice deal already happened for a Serpent mount, so I'm about to learn the hard way if that fits (or if I have to consider fabricating a new cover piece)
oh ok, I did several conversion ( xray xt8 to 6s BL for example )
I went the cheap way : L shaped 3mm aluminium piece from the hardware store + some diff plate that take 16mm bearing ( like the tekno ones for example )
that's a ultra lx2 diff + ultra lx diff plates for my monster truck :
check out my photobucket for more pictures

of course, this simple system is not as easy to adjust as modern sliding diff mounts, but its way cheaper and I always use some strong 4mm screw to hold the motors.

Last edited by werner sline; 12-14-2015 at 02:39 PM.
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Old 12-15-2015, 12:01 AM   #1378
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Default New Mbx7r Eco Buggy

Hi all, New to 1/8 EP Buggy. I'm in the build of my New Mbx7r Eco...currently running Mbx7r Nitro and have raced many brands over the years only ever gas, This is the best handling Buggy I've ever had, which is why I need to try EP so this is a first.
Now I wish I had read this thread earlier regarding Esc and Motor Combo as I've purchased Tekin Rx8 Gen2 with 2600kv. I have never read on this thread anyone using this high KV motor, Am I better to sell it new before I install it or is this motor able to be dialled down....Ill more likely run the 14t pinion with box set up for a start with a Gens 5000mAH 4s 40c battery.
Thx in advance for any input
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Old 12-15-2015, 05:31 AM   #1379
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Yes sell that monster to Werner Sline. He needs more power. Lol. 1900 is all anyone ever needs imo. I have tried big motors, usually more wheel spin and hotter temps.
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Old 12-15-2015, 07:22 AM   #1380
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Hi all, New to 1/8 EP Buggy. I'm in the build of my New Mbx7r Eco...currently running Mbx7r Nitro and have raced many brands over the years only ever gas, This is the best handling Buggy I've ever had, which is why I need to try EP so this is a first.
Now I wish I had read this thread earlier regarding Esc and Motor Combo as I've purchased Tekin Rx8 Gen2 with 2600kv. I have never read on this thread anyone using this high KV motor, Am I better to sell it new before I install it or is this motor able to be dialled down....Ill more likely run the 14t pinion with box set up for a start with a Gens 5000mAH 4s 40c battery.
Thx in advance for any input
Yep patrick is right,
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