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Old 11-21-2010, 07:50 AM   #3781
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Hi,

Just an information...

Does anyone tried the Mugen MTX-4 Hyper flex chassis kit ?

here is the link:


http://www.redrc.net/2010/06/mugen-m...x-chassis-kit/

if yes .... the handling of the car is diferent? Itīs much diferent from the stock one 3mm or the 4mm...?

Thanks...
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Old 11-21-2010, 09:56 AM   #3782
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3mm chassis = more flex = more grip

4mm chassis = less flex = less grip, and more sensitive to tuning changes.

If you can drive the car very well, most probably you dont need 4mm chassis. Some people even avoid of using it.
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Old 11-23-2010, 06:00 AM   #3783
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4mm Chassis not needed unless you dragrace.
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Old 11-23-2010, 08:03 AM   #3784
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4mm reduces traction rolls in hi-bite situations.

also lowers the cg of you car..........it is just another tuning option that can be very benefcial in the right situation.
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Old 11-23-2010, 08:06 AM   #3785
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4mm chassis is good, from back reading you may find most people go to any 4mm chassis, known to bring out the best in the MTX4, and possibly stop issues like stripping gears.

In fact I don't know of any major runners using the 'stock' 3mm chassis, if you look at any worlds pics etc, everyone seems to run some form of 4mm or aftermarket chassis for the Mugen.

Could just be the stock chassis is known for just a little too much flex, someone else also told me they are known to bend easily in a major hit, which creates tweak you don't want.

But then I'm no expert, I just based buying mine off past info in this thread, I wanted a kawa or knack chassis, but you can't find either anymore, so I went the genuine mugen, but I'll need to grind the area in front of the clutch, and maybe drill a hole for access to the steering link, which I think the knack chassis has.

And I did think of getting rid of my MTX4R recently, but I ran it last weekend, and had a ball, it's a tough car to work on, but it drives sweet and parts are cheap.

In fact mine was almost more Mugen than possible that night, everything on it is original Mugen, fitted with a Mugen Ninja engine, and even Mugen pipe, running on NitroX Mugen Mix fuel.
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Old 11-23-2010, 11:04 AM   #3786
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I've ran both and I actually like the 3mm in high bite and 4mm in lower bite track... I know this seems to be the opposite but that's been my experience with this car in the last 4-5 years.....

The 4 mill chasis seems to be more responsive.... I have the chasis posted in the RedRC link and I'm almost sure it is a 3 mm chasis but made with a stiffer aluminum than stock... I haven't tried it yet but the qaility in machining looks good.
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Old 01-15-2011, 06:33 PM   #3787
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Hope someone still reads this thread cause i need urgent help!

I have a MTX-4R with the one-piece engine mount. None of my three engines fits on this car.

The carburetor touches both the brakediscs and the radioplate.

How ever i twist and turn the carb it just don't fit.

I had to use 3mm locknuts beneath the engine mount so the carb had free access to move.

And in the manual it does not say anything about this. What should i do?!?
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Old 01-15-2011, 08:26 PM   #3788
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Quote:
Originally Posted by Sonsa View Post
Hope someone still reads this thread cause i need urgent help!

I have a MTX-4R with the one-piece engine mount. None of my three engines fits on this car.

The carburetor touches both the brakediscs and the radioplate.

How ever i twist and turn the carb it just don't fit.

I had to use 3mm locknuts beneath the engine mount so the carb had free access to move.

And in the manual it does not say anything about this. What should i do?!?
1. Are you using ventilated brake disc ? If so, you need to go back using original brake disc ( thin )

2. If you want to keep using the ventilated brake disc, then you have to experiment using several engine mounts, eg. mtx3 engine mount, v1rrr engine mount.

3. You can check with towerhobbies.com and search os engine 3mm engine mount plates.
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Old 01-15-2011, 08:36 PM   #3789
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what kind of engine is it, i had a few issues with the 3racing 1 piece when i had my mtx4 you can always put some shims under the engine bracket to lift the engine up a little. to fix my issue i went to the standard 2 piece mount

mitch
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Old 01-15-2011, 10:05 PM   #3790
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Quote:
Originally Posted by asw7576 View Post
1. Are you using ventilated brake disc ? If so, you need to go back using original brake disc ( thin )

2. If you want to keep using the ventilated brake disc, then you have to experiment using several engine mounts, eg. mtx3 engine mount, v1rrr engine mount.

3. You can check with towerhobbies.com and search os engine 3mm engine mount plates.
Yeah im using the ventilated brake discs, i have 2 of them mounted.
But its not only the discs that touches the carb, the throttle is not able to move, its blocked by the radio plate...

I'll check that out, thanks.

EDIT: Did not find anything on towerhobbies...

Quote:
Originally Posted by NiTrO BoOsTeR View Post
what kind of engine is it, i had a few issues with the 3racing 1 piece when i had my mtx4 you can always put some shims under the engine bracket to lift the engine up a little. to fix my issue i went to the standard 2 piece mount

mitch
I have three different engines, RB Matrix, Sirio XXX and a Max engine (dont remember what modell)

I have mugens own lightweight one piece engine mount. I really don't want to mod anything,
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Old 01-16-2011, 11:09 AM   #3791
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maybe this could be use :

http://www3.towerhobbies.com/cgi-bin...&I=LXMW33&P=SM
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Old 01-16-2011, 01:37 PM   #3792
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Quote:
Originally Posted by Sonsa View Post
Hope someone still reads this thread cause i need urgent help!

I have a MTX-4R with the one-piece engine mount. None of my three engines fits on this car.

The carburetor touches both the brakediscs and the radioplate.

How ever i twist and turn the carb it just don't fit.

I had to use 3mm locknuts beneath the engine mount so the carb had free access to move.

And in the manual it does not say anything about this. What should i do?!?
I did fit sirio based engines on the mtx4r with no issues just make sure you turn a little bit the carb (tiny spot)
Until it clears the brake disc, it will be very closo but won't touch, also the engine carb ball link has be turned horizontal otherwise it will hit the radio plate,
Try it until it fits just right
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Old 01-17-2011, 03:51 PM   #3793
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Quote:
Originally Posted by Sonsa View Post
I have three different engines, RB Matrix, Sirio XXX and a Max engine (dont remember what modell)

I have mugens own lightweight one piece engine mount. I really don't want to mod anything,
ok no worries, i know a few people had trouble with fitting sirio to the mugen, i think you will just have to put spacers undering the engine brackets, so it will raise the engine and also the ball link needs to be horizontal like seisick said

Mitch
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Old 01-20-2011, 08:35 PM   #3794
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hi guys..wonderin if u guys can fill me up here.

>small technical track.2 sweepers, 4 hairpins , 2 ( sort of slight chicanes), smooth and flat tarmac.
medium traction.

fr & rear diff oil?
fr & rear droop?
fr & rear shock spring?
fr & rear shock oil?
track width?
fr & rear roll centre.

thanks
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Old 01-20-2011, 11:50 PM   #3795
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Try this out and let me know how you like it

Front Diff= 100,000 mugen diff oil
Rear Diff=50,000mugen diff oil
Droop= 2 front 4 rear
Shock Springs =light blue fr and rear
Shock Oil = front 700 rear=600
Track Width= front 198 rear 199
Roll Center= front 1mm spacer under upper arms: Rear= Low

Make sure your sway bar links are even and 2mm inward.
Shock position should be on the 2nd hole from the bottom.
For tires try this 40rear 37fronts. 60mm rear 58 front

Hope this gets you going in the right direction

Quote:
Originally Posted by rcabj View Post
hi guys..wonderin if u guys can fill me up here.

>small technical track.2 sweepers, 4 hairpins , 2 ( sort of slight chicanes), smooth and flat tarmac.
medium traction.

fr & rear diff oil?
fr & rear droop?
fr & rear shock spring?
fr & rear shock oil?
track width?
fr & rear roll centre.

thanks
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