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Old 05-15-2008, 09:44 AM   #301
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Quote:
Originally Posted by YBSLOW View Post
We will have titanium rear center axles for the MRX4-x sometime next week. i will post some pics when they are finished.
Post some Pics??? Huh?
I better have one on my door step next week!!! Ha Ha!!!
If not, your painter may go on strike!!! LOL!

See ya!

T
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Old 05-17-2008, 10:58 PM   #302
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Quick question for you guys...

I just built the rear bulkhead and need to know if the ventilated disc brake rubs on the teflon brake pads all the time on purpose as its design?

I swear the disc brake should rotate freely without any friction before applying any braking power purposely.

Did I do something wrong? Haha I did CA the pads to the metal plates.

The lower half of disc and brake pads have freeplay but the upper half portion are touching each part causing friction and not allowing 2speed axle to rotate freely enough, pretty notchy.
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Old 05-18-2008, 12:52 AM   #303
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You did nothing wrong, sand the pads a little so disc rotates freely.
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Old 05-18-2008, 05:09 AM   #304
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Default MRX Sprig rates and set-up questions

Hi guys!

It is still a little bit confusing for me to understand which springs are softer or harder than the standard white mrx springs. To make matters worse, Mugen introduced some new springs recently:

H0516 Front blue
H0511 front black
H0515 front yellow

Could someone please post a complete springrate chart? Where are the new ones positioned and which one is the next stiffer one in the rear after white? pink or red??


Got some more setup related questions:

Since those things are hard to change on the track, could someone please describe how the handling changes if I alter one of the following things:

Front one-way higher/lower by changing the excentrics

Rear spool/pulley higher/lower by changing the excentrics

Font/back wheel offset bigger/smaller by changing the amount of shims on the inside/outside of the wheel axle

Any set-up recommendation for a fast, medium bite Euro-style track?

Many thanks for your help guys, much appreciated!

Stefan
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Old 05-18-2008, 12:07 PM   #305
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You did nothing wrong, sand the pads a little so disc rotates freely.
Will definitely check out all of those areas and come back and talk about what I've found. If it matters at all, I am using T0154 eccentrics for the rear set at upper 90 degrees slot.

Found another binding issue: Front drive belt that rotates over middle/center pulley to front one-way pulley...problem is that the belt tightens through 25% out of its complete/full revolution...the other 75% is free and loose...I am using the H0188 as opposed to the T0154 eccentric hubs in front set at LOWER CENTER SLOT (90 degree)
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Old 05-20-2008, 11:45 PM   #306
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Default kfactory twin brake disc

anyone tryed the new kfactory twin brake disc brakes
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Old 05-21-2008, 05:55 PM   #307
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Fulcrum, I think the question has been asked about a hundred times. Unfortunately I have never seen a chart published. This I can tell you; Yellow is softer than white and blue is stiffer. For the rear both pink and red are stiffer with red being softer of the two.
Black fronts are stiffer than white but where they fit into the scheme of things as well as the rear is to be dertimned...I'll have them next week. Buy the way these springs are not new, there option parts for the Sting=MRX-1.
Higher end has more traction than the lower. Both eccentrics will work in the bulk heads offering different rates of offset.
Rear wheel offset mechanically effects the geometry in relation to the contact patch. I cant feel a difference, but by no means am I a pro....
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Old 05-21-2008, 08:16 PM   #308
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I know for sure Yellow is stiffer than white, Black I heard was stiffer than yellow. Yellow is slightly stiffer than white by about a pound or two if we were going by pounds. Grey is softer than all of them.

Paul
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Old 05-22-2008, 03:19 AM   #309
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Quote:
I know for sure Yellow is stiffer than white

Quote:
Yellow is softer than white

Still confused, but on a much higher level now



I think I will need to buy them all in order to know for sure. Thanks for your help guys
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Old 05-22-2008, 04:44 AM   #310
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Yellow is softer than white !!!! period

Read the MRX parts numbers page !!! and it gives you the thickness of the spring.

And as for some people who offer advise, dont do so unless you are 100% correct
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Old 05-22-2008, 04:57 AM   #311
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Quote:
Originally Posted by PROVK View Post
Yellow is softer than white !!!! period

Read the MRX parts numbers page !!! and it gives you the thickness of the spring.

And as for some people who offer advise, dont do so unless you are 100% correct
Yellow has a thinner wire but it has less coils which is why it is stiffer. I tested it on a $5000 machine so I am pretty sure it is accurate. Besides that if you try them, yellows will make your car push more.

Paul
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Old 05-22-2008, 05:07 AM   #312
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Quote:
Originally Posted by chicky03 View Post
Yellow has a thinner wire but it has less coils which is why it is stiffer. I tested it on a $5000 machine so I am pretty sure it is accurate. Besides that if you try them, yellows will make your car push more.

Paul
Paul

Now you got me confused

George
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Old 05-22-2008, 06:46 AM   #313
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Quote:
Originally Posted by PROVK View Post

And as for some people who offer advise, dont do so unless you are 100% correct
Here is some data for you to read.

MUG-GREY-R 33.3
MUG-WHITE-R 40.7
MUG-GREY-F 42.2
MUG-WHITE-F 51.7
KYO-BLACK-F 53.3
MUG-YELLOW-F 53.9
XR-LIGHT RED 36.3 (carpet springs)

I need to get some red and pink rear springs to test. I will post the info when I test it.

Also here is a link to Rick V's website where he mentions the springs. I imagine he knows what he is talking about.http://www.mugen-rickv.com/index.php...d=37&Itemid=88

Here is the machine I used to get my results. http://www.brookfieldengineering.com...lysis/lfra.asp

They also make a sweet machine for testing shock oil.http://www.brookfieldengineering.com...cone-plate.asp

Paul
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Last edited by chicky03; 05-22-2008 at 07:48 AM.
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Old 05-22-2008, 06:55 AM   #314
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Paul, can you test the Kyosho white springs front and rear also?
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Old 05-22-2008, 07:09 AM   #315
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Paul, can you test the Kyosho white springs front and rear also?
If you give me a set I will test them. The real question is will I tell you the correct answer

See ya this weekend!!

Paul
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