RE: Cen Matrix Tr Arena  
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RE: Cen Matrix Tr Arena - 3/22/2007 11:26:39 PM   
DahlELama



Posts: 309
Joined: 5/26/2006
From: Somewhere, ID, USA
Status: offline 		I had heard that the Stock TR wheels were a larger diameter than standard so I didnt know if a Maxx or MTR tire would fit. From what I remember there is a size difference but I think folks have been able to stretch them on as the difference wasnt that much.

Instead of running offset rims I run different hexes and zero offset wheels depending on the track. Mugen MBX5T hexes are 1/2" offset. This just allows me to run one set of tires and wheels and just switch out the hexes if the track calls for a narrower or wider truck. A little more economical for me.

_____________________________

CEN Arena FRE / Matrix Pro Buggy / CT4R / MG10
RB Concepts / JP Racing Novarossi

(in reply to s5lin)
       Post #: 201

RE: Cen Matrix Tr Arena - 3/24/2007 10:41:18 AM   
RGX Blade


 

Posts: 461
Joined: 5/14/2006
From: Riverside, CA, USA
Status: offline
quote:

ORIGINAL: RobertHull

morkendi,

the RB will fit the motor mounts are low enough cause you can use the stock motor as a bump start too,just make sure you use the CEN flywheel and everything will be fine



on the mounts they will fit, but you will need to "Grind Down" the back of the mount...
even then, they are just a little off...
if you do not you'll "Risk" may "not happen" but you'll "Risk"the ears on the Motor Breaking as the stock CEN mounts have a "Angle" on the back that needs to be "Flatened" for most motors some will notice this when Assmebling the Car from Scratch but when in RTR the stock motor works..
but most all other motors will have to have the mount grinded down
...RB's included..
as most of the motors will have some kind of "Webbing" on the motor along it's case.
one of the "Few" motors that work with the Stock cen mounts are the OPS motors?
others like the RB,JP modded,O.S., Nova's,STS's,Rossi AXE,and Axial you'll need to grind down "Substantially" and will depend on "Model of engine" .21 ,.28 etc.....
as Illustrated first one is a Nova based motor second is a RB based motor.
for Flywheel etc. regardless of flywheel clutch system be sure to use same parts regardless of system..in other words do not use a CEN flywheel with a Mugen Clutch nut? they may not line up with the springs etc......be sure the parts are the same CEN flywheel and nut, Mugen flywheel and nut, Kyosho etc.......but any one of them will work...as well many have had luck with the "Werks System" as well as the RVM Speed Clutch which is as well "Adjustable" like the "Werks" but uses a 3 shoe system.....








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Oakley | RGX Racing /KM Machining | GRP / ACE Engineering

(in reply to RobertHull)
       Post #: 202

RE: Cen Matrix Tr Arena - 3/31/2007 8:29:41 PM   
newbie232


 

Posts: 99
Joined: 2/12/2007
From: , ON, CANADA
Status: offline 		what do you guys reccomend as some upgrades for the RTR. I am debating between getting new servos or a new react radio system. Also, what are som must buy uprgades for the RTR as I am going to be putting a big order in at Amain today,

(in reply to RGX Blade)
       Post #: 203

RE: Cen Matrix Tr Arena - 4/2/2007 4:31:30 AM   
marko rossi


 

Posts: 52
Joined: 3/19/2007
From: sydney, AUSTRALIA
Status: offline 		ive noticed some of u guys run black rims on the truggy - are these painted or bought black?
i'd like to paint the factory white rims black but not sure what paint to use & whether it will chip off with all the dirt/rocks the car flicks around...

(in reply to newbie232)
       Post #: 204

RE: Cen Matrix Tr Arena - 4/4/2007 12:42:15 AM   
Mystikal8885


 

Posts: 124
Joined: 11/28/2006
From: Milledgeville, GA, USA
Status: offline 		Hey if anyone wants a good deal on an Arena send me a PM.

< Message edited by Mystikal8885 -- 4/4/2007 12:45:39 AM >

_____________________________

Cen Matrix TR Arena
Traxxas Revo 3.3

(in reply to marko rossi)
       Post #: 205

RE: Cen Matrix Tr Arena - 4/5/2007 8:54:15 AM   
wriffwraff



Posts: 140
Joined: 12/14/2005
From: , NC, USA
Status: offline 		yeah, i know... i only managed to run three, maybe four tanks before the metal-shavings-in-the-engine-so-CEN'd-the-engine-back-to-CEN-thing happened. if anybody is interested, you can check out my cen matrix TR arena RTR woes @ http://www.rcuniverse.com/forum/m_5608420/anchors_5652448/mpage_1/key_/anchor/tm.htm#5652448.

the Cen Matrix TR Arena RTR is a cash money loss, that is with the exception of any aftermarket servo's, radio or engine you may have installed. thank gawd' you can transfer those to a mugen mbx5t pro kit. hey, your's looks very nice, so maybe keep it if you're going to take more loss. keep it, so's you'll have something to keep you entertained while your mugen, ofna or kyosho cools off

get this: the neighborhood kiddie's and an ole' stray dog was laffin' at me when i tried to fire this "truggly" up :

quote:

ORIGINAL: Mystikal8885

Hey if anyone wants a good deal on an Arena send me a PM.



< Message edited by wriffwraff -- 4/7/2007 11:03:51 PM >

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Axe Rossi Cobra x1 Evo/JP3 pipe/Dx2 radio/Hitec 5955TG & JR9000T servos/5F/20C/3Rdiffs & 60/50shock

(in reply to Mystikal8885)
       Post #: 206

RE: Cen Matrix Tr Arena - 4/5/2007 9:36:23 AM   
Mystikal8885


 

Posts: 124
Joined: 11/28/2006
From: Milledgeville, GA, USA
Status: offline 		My reason for selling the Arena has nothing to do with your bad experinces or comments. I bought the RTR when they first came out and all I have done since then was install the basic CNC parts, which were the CNC servo saver arm and the CNC rear toe block. I've also installed the cross-pins because I race. My Arena has a gallon run thru it and I never had any of the experinces you have had. Too bad you had shavings in your engine, I never cleaned mine and I dont see any shavings in my engine up to this date.

I'm tired of reading posts bashing the diffs. It's as simple as this....
For Bashers : Use the stock LSD diffs.
For Racers : Use the cross pin kit. It's only $39.99 to convert to standard diffs.

Nothing is wrong with the LSD diffs for Bashers. The difference between the cross pins and the LSD is not noticeable and it wont benefit bashers. You will have more fun with the way power is distributed to the wheels I think.
Racers, you will need the cross-pins as they tend to give you more control over the way power is distributed to the wheels. The LSD diffs tends to push(slide) the Arena into the corner with less grip and the Arena will tend to also spin out powering out of the corner. With the cross pin kit, the Arena would not push into the corner and it wont spin out anymore. A good base setup to use is 7k-15k-3k in the front, center and rear diffs respectively.

< Message edited by Mystikal8885 -- 4/5/2007 9:37:15 AM >

_____________________________

Cen Matrix TR Arena
Traxxas Revo 3.3

(in reply to wriffwraff)
       Post #: 207

RE: Cen Matrix Tr Arena - 4/5/2007 9:54:53 AM   
marko rossi


 

Posts: 52
Joined: 3/19/2007
From: sydney, AUSTRALIA
Status: offline 		you refer to the cross pin kit - is this the block that is available to lock the centre diff? if so ive been thinking about this mod for a while, along with running diff oil rather than the diff grease...
quote:

ORIGINAL: Mystikal8885

My reason for selling the Arena has nothing to do with your bad experinces or comments. I bought the RTR when they first came out and all I have done since then was install the basic CNC parts, which were the CNC servo saver arm and the CNC rear toe block. I've also installed the cross-pins because I race. My Arena has a gallon run thru it and I never had any of the experinces you have had. Too bad you had shavings in your engine, I never cleaned mine and I dont see any shavings in my engine up to this date.

I'm tired of reading posts bashing the diffs. It's as simple as this....
For Bashers : Use the stock LSD diffs.
For Racers : Use the cross pin kit. It's only $39.99 to convert to standard diffs.

Nothing is wrong with the LSD diffs for Bashers. The difference between the cross pins and the LSD is not noticeable and it wont benefit bashers. You will have more fun with the way power is distributed to the wheels I think.
Racers, you will need the cross-pins as they tend to give you more control over the way power is distributed to the wheels. The LSD diffs tends to push(slide) the Arena into the corner with less grip and the Arena will tend to also spin out powering out of the corner. With the cross pin kit, the Arena would not push into the corner and it wont spin out anymore. A good base setup to use is 7k-15k-3k in the front, center and rear diffs respectively.


(in reply to Mystikal8885)
       Post #: 208

RE: Cen Matrix Tr Arena - 4/5/2007 10:06:38 AM   
Mystikal8885


 

Posts: 124
Joined: 11/28/2006
From: Milledgeville, GA, USA
Status: offline 		Marko, i'm referring to Gene Hickerson's cross-pin kit which converts the LSD diffs into the standard diffs. Give him a call, Gene is always glad to help customers. Hopefully he can ship to you in Australia.
http://machinesrchobbies.com/_wsn/page2.html

< Message edited by Mystikal8885 -- 4/5/2007 10:07:52 AM >

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Cen Matrix TR Arena
Traxxas Revo 3.3

(in reply to marko rossi)
       Post #: 209

RE: Cen Matrix Tr Arena - 4/5/2007 10:35:33 PM   
marko rossi


 

Posts: 52
Joined: 3/19/2007
From: sydney, AUSTRALIA
Status: offline 		damn pc is playing up - oops

< Message edited by marko rossi -- 4/5/2007 10:40:20 PM >

(in reply to Mystikal8885)
       Post #: 210

RE: Cen Matrix Tr Arena - 4/5/2007 10:38:00 PM   
marko rossi


 

Posts: 52
Joined: 3/19/2007
From: sydney, AUSTRALIA
Status: offline 		its done it again - sorry guys pls ignore

< Message edited by marko rossi -- 4/5/2007 10:41:14 PM >

(in reply to Mystikal8885)
       Post #: 211

RE: Cen Matrix Tr Arena - 4/5/2007 10:39:21 PM   
marko rossi


 

Posts: 52
Joined: 3/19/2007
From: sydney, AUSTRALIA
Status: offline 		that sound interesting running a standard diff for the front/center/rear

i understand the benefit of this however if i relate to my playing with real cars - opening center diffs are not good for traction as most often the wheel with the lightest weight will spin up (usually the inside wheel going into a cnr)

if anything i would have thought that running a lock diff in the center would be best as power is distributed 50/50 front to rear & leaving the front/rear diffs as they are LSD.

maybe the law of physics is a different kettle of fish when off-road, thoughts?

(in reply to Mystikal8885)
       Post #: 212

RE: Cen Matrix Tr Arena - 4/5/2007 11:07:41 PM   
Mystikal8885


 

Posts: 124
Joined: 11/28/2006
From: Milledgeville, GA, USA
Status: offline 		Marko, it really depends on personal preference. Everyone has their own style of driving. When using the LSD's going into the corner, the wheel with more grip (the outer wheel) will have more power. When using the standard diffs going into the corner, the wheel with less traction (the inner wheel) will get more power. Most racers, if not all are accustom using standard diffs, so they would want standard diffs. That's why you see alot of bashing on the Cen because it comes with LSD's. But there is a cure for that now and it's not expensive. The cross-pin conversion which converts the LSD diffs into standard diffs, gives you the ability to further control and play with different weights of diff oils.It also gives the user the ability to distribute the power the way they want. I think it's best you play around with different setups until you find what's best for you and for your track.
This is coming from my experience using many, if not all the different setups recommened and used. I have tried using LSD in the front and installing the cross-pins in the center and rear, using different weights of oils and eventually I found that for off-road racing, having the cross-pins installed in all three diffs in the Arena allowed you to have faster cornering speeds and overall easier truck to drive on a challenging race track. At one point I thought that leaving the LSD in the front would give me more grip as the wheel with more contact (outer wheel) would bite more and pull out of the corner easier. This was not true in my case, The truck was pushing into the corners big time and I was not able to stay to the inside of the corners.
You also seem to have your own theories on how the diffs act and that's a good thing. I would say...."Put them to the test!" That's what I did and I came up with a setup I really like and works well for me.

< Message edited by Mystikal8885 -- 4/5/2007 11:10:12 PM >

_____________________________

Cen Matrix TR Arena
Traxxas Revo 3.3

(in reply to marko rossi)
       Post #: 213

RE: Cen Matrix Tr Arena - 4/12/2007 7:10:32 AM   
wriffwraff



Posts: 140
Joined: 12/14/2005
From: , NC, USA
Status: offline 		hey, what's up with the engine mount mods i installed a warranty replacement nx-26 without any mods. i had to move the chassis mounts about a mm, but that's it. i ask b/c i also have a .21 axe rossi mamba as an alternate engine.