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Mugen MBX8

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Old 05-31-2019, 05:05 PM   -   Wikipost
R/C Tech ForumsThread Wiki: Mugen MBX8
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E2025 - MBX8 Worlds Edition - April, 2019

MUGE0240: Wide Offset Wheel Hubs 1mm 2pcs; The 1mm wide offset wheel hubs will increase stability and cornering.
MUGE2146: Inline Front Uprights; The E2146 inline front uprights have smoother steering compared to the stock E2147 trailing front uprights and work great in high traction conditions. E2146 uprights can be used with both CVA and universal style driveshafts.
MUGE2168: -3mm Front Upright Arm; The -3mm front upright arm improves the initial steering response and make the vehicle more stable through the middle and exit of the corner.. The new upright arms also reduce bump steer and make the vehicle more predictable in bumpy conditions.
MUGE2235: 46T Spur Gear; The 46 tooth HTD spur gear provides a great balance of acceleration and top-end speed.
MUGE2252: 12T Pinion Gear
MUGE2254: 42T Conical Gear; The optional 12T bevel gear when used with the 42T conical gear will change the final drive ratio and increase acceleration.
MUGE2260: Center Joint Cup.
MUGE2261: Center Front Dog Bone (84.5mm)
MUGE2262: Center Rear Dog Bone (115mm); The front and rear-center dogbones for the MBX8 reduce friction from the stock universal driveshafts. Less friction will give the vehicle a more efficient drivetrain, increase acceleration, and provide more traction. The dog bones are lightweight, durable, and will increase traction.
MUGE2428: Rear Wing Stay +15mm; The +15mm wing mount has more adjustment and will help increase mid corner rotation and be more stable in high speed conditions.


E2021 - MBX8 1/8 Nitro Buggy Kit

Chassis:
The MBX8 chassis features a new design that improves traction and stability in bumpy conditions and on the exit of corners. The steering post are also keyed into the MBX8 chassis for easier maintenance.

Differential & drive train:
High Traction Differentials are included in the MBX8. The Mugen Seiki HTD provides increased acceleration, longer runtime, and more consistent handling. The HTD's also increase stability, traction, and improve handling in bumpy conditions. The HTD has a new larger volume diff cup to increase consistency during long main events. This makes it easier to time rhythm sections, better in bumpy and low grip conditions, helps to increase traction, and increases fuel mileage.

The new gearbox makes allows you to remove and service the differentials without detaching the suspension arm mounts. Easy access to the front and rear differential.

New straight cut 13T bevel gear & 44T conical gear. The new straight cut bevel and conical gears increase acceleration, runtime, and efficiency. A free and efficient drive train will also increase speeds while cornering.

Light weight one-piece wing mount:
The new lightweight one-piece wing mount lower the center of gravity. The position of the wing and wing mount is optimized to improve the performance of vehicle. The height of the wing mount is adjustable. This allows you to control the down force on the rear of the vehicle by simply raising or lowering the mount on the shock tower.

Light weight high down-force wing:
The new IFMAR legal wing is lightweight and provides amazing down force and cornering. The underside of the wing uses a new design to reduced weight and creates additional down-force.

Suspension:
New suspension mounts. The FF/FR/RF/RR are new for the MBX8.
The front and rear lower arms use a new impact resistant material for increased durability. The new arms are box-shaped and include arm stiffeners to reduce flex and increase durability. Adjusting the hardness of the lower suspension arms is now possible. This allows you to fine tune the steering and traction from track to track. CFRP plates will be released as an option part.

Center differential mount & plate:
The center differential mounts use a stiffer material and has a new top plate to reduce chassis flex and increases clutch bell, spur gear, and clutch bearing life. The reduced chassis flex also provides more consistent handling in all conditions. The top plate design also makes it easier to adjust the brakes and easier maintenance.

Enclosed Battery box and updated carbon fiber radio plate:
The MBX8 still uses a flat 2S Lipo or Life battery, but the receiver battery is now enclosed in a molded battery box. The battery box allows for quick and easy access to the battery. The molded box also helps protect the battery from hard impacts. The battery box is mounted to an updated carbon fiber radio plate.

Other new parts and upgrades:
Body, Clamping Servo Saver Nut, F/R Shock Towers, Front bumper, Front center and rear center universal joint.

Mugen Seiki MBX8 Manual

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Old 07-09-2019, 11:34 PM
  #976  
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Originally Posted by morgoth View Post
I started a race yesterday morning with 5-7-3 in the diffs (Drake base setup) with the ackerman in the 4th hole. The car could use a little faster steering reponse and it understeered on power. I went to the middle hole on the ackerman plate and change my front diff to 8k and the car was almost perfect.
What type of surface was this? Thx
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Old 07-10-2019, 01:40 AM
  #977  
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Originally Posted by snowninja View Post
What type of surface was this? Thx
Hardpacked clay with some stones in it. So kinda abrasive.
The racing line had little dust on it, but there was no groove.

I usually start with 5-7-3 in the diffs for clay tracks and tweak from there. If it's really low grip you can go to 5-5-3.
And when there is more grip I start going up on the front diff first to make the car easier on corner entry and give it more steering on exit. Depending on the conditions, 7-7-3 or 10-7-3 is usually good.
Maybe if you have a really high grip blue track, you can go higher, but we don't have that over here. Only super high grip astroturf and then I go to 15-10-6 or even 15-15-7, but that stuff drives totally different than normal clay tracks.
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Old 07-10-2019, 01:54 PM
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I think that we should not raise the differential oils too much. a good starting configuration is 5/5/2 If you have more adherence 7/7/3 at most 7/5/2
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Old 07-11-2019, 12:31 AM
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Originally Posted by tom1974 View Post
I think that we should not raise the differential oils too much. a good starting configuration is 5/5/2 If you have more adherence 7/7/3 at most 7/5/2
The really thick diffs are for astro only, which is super high grip (carpet like grip).

I have tried 5-5-3 and my car had a lot of understeer on exit and I would get bald front tires in no time. I think 2 in the rear diff is too light and makes the rear inconsistent. 3 is as low as you should go.
I think 5-7-4 or even 5-7-5 is one of the easier setups. 5-5-2 should only be used for the first gallon to break the car in.

Also clean and regrease the outdrives of the center diff every 3 days at the track. I have found the center diff locks up once the grease is wearing out with the universal axles. The dogbones are better because they go deeper into the outdrives and have less sideways leverage on the outdrives under acceleration. So the diff action will be more consistent and it will bleed more power to the front.
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Old 07-11-2019, 04:38 AM
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Robert Batlle latest set up is 15k-7-4 for med to high grip
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Old 07-11-2019, 04:44 AM
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Originally Posted by hyperfuxx View Post
Robert Batlle latest set up is 15k-7-4 for med to high grip
I have tried this myself on med grip clay tracks and it's amazing how well the car still turns with 15k in the front diff and it's easy to drive. But I would only use it on high speed flowing tracks.
The car will understeer too much when entering the corner on tight or low grip tracks.
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Old 07-11-2019, 06:50 AM
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The deposit fuel Mugen MBX8T which capacity 125cc 150cc more?
Compatible with MBX8 BUGGY?
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Old 07-11-2019, 01:04 PM
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Originally Posted by Pedro Jesus View Post
The deposit fuel Mugen MBX8T which capacity 125cc 150cc more?
Compatible with MBX8 BUGGY?
Yes this is compatibile but is 150cc
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Old 07-14-2019, 12:35 AM
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Guys quick help I have a new OS Adam Drake editon and a New Mugen Ninja B05 . I have a MBX8 WE and a MBX8T which motor in the buggy and which in the truggy. I was going to put the Adam Drake editon in the buggy but maybe I should put that in the truggy cause it has some more power and put the ninja in the MBX8? PLease help I have OS 2090 SC pipes for both of them 75mm
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Old 07-14-2019, 08:00 AM
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If you use 2090 the car is more aggressive down with 2060 you have more extension.
you can work on the clutch use spring 0.8 or 0.9 mm.you can use pinion 14 t
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