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Old 12-04-2003, 11:36 AM   #1
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Default MTX-3 Negative Differential

Is the Kawahara Negative Diff worth the price and added weight? Anyone with experience ?
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Old 12-04-2003, 01:57 PM   #2
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I ran the neg-dif on my MTX-2 and it made a WORLD of difference with that car. I've been debating about gettng one for my MTX-3, but I'm not sure if it is worth it for this car. I love the way it handles right out of the box. Also, I've spoken to several people who have the neg-diff on their MTX-3, and most of them seem to think the car doesn't really benefit from it enough to justify the cost and weight.
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Old 12-04-2003, 02:28 PM   #3
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Wink 16/19 overdrive conversion

The 16/19 conversion belts...
Ebay Item number: 3162255614
$6.95 each

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Old 12-04-2003, 05:05 PM   #4
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The conversion just ensures even wear on the front and rear tires doenst it?

The Negative is a bit costly, and the difference is not that much... but, its there
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Old 12-04-2003, 07:06 PM   #5
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Running the conversion & 50,000 diff oil in the MTX-3 on a high grip track is the only way to go. I've tried a solid rear, but the tires aren't wide enough to handle the power. 50,000 in the rear diff gives it just enough slip to keep it controllable.
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Old 12-05-2003, 04:50 AM   #6
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The 16/19 conversion is the sh.t!

I ran it all summer long and switched back once and the the car felt like a dog.
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Old 12-05-2003, 09:44 AM   #7
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Smile 16/19 overdrive conversion

the car handles a lot better with the conversion considering the fact that the tires wear out almost the same front and rear. if you think about it in a pretty straightforward way, if the rear is always wearing almost two time faster in the rear with the stock pulleys - which means the rear tires spin more than the front. this makes you loose some of the horsepower and accelaration. i mean you still have the horsepower but just to spin tires and not move the car and accelerate the way it should.

i noticed that with the conversion, the car handles really good from start to finish. and also you don't have to true your front tires to match the rear again which is a waste.
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Old 12-05-2003, 12:48 PM   #8
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it works only if you have a tire truer
cuz of the split
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Old 12-05-2003, 05:03 PM   #9
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You need to run different diameter fronts from rears with the 16/19 conversion?
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Old 12-05-2003, 05:14 PM   #10
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I believe so!

I run my car stock, but I use 2 sets of rear tires and rotate them every few runs.

Now, I dont need to true any tires (i dont have a truer anyways), and my car runs just fine.

But! Keep in mind that I dont run those LONG LONG mains because here, we dont have races, everyone just play for fun.
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Old 12-05-2003, 11:12 PM   #11
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I dont understand the logic in running the 16/19 conversion and changing tire diameters. I thought the idea was to have a difference and by truing to a different size you are "undoing" what you tried to accomplish in the first place.
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Old 12-05-2003, 11:50 PM   #12
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Default 16/19 conversion

with a 16/19 conversion, all you're doing is getting rid of that overdrive problem the mtx-3 has. by installing the 16/19 conversion, you're fixing the ratio of the car. this translates to almost even wear of tires front and rear and makes the car handle even better and even more consistent.
with a car that is setup to race, we almost every time have a 26mm front and 30mm rear. we cant rotate tires and put the 30mm in the front to even out wear. and in a long main, with a stock ratio, we cut the front tires down about 2mm to 4mm to compensate and get that consistent feel of the car. but with the conversion, it fixes the problem.
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Old 12-06-2003, 12:02 AM   #13
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Default Re: 16/19 conversion

Quote:
Originally posted by evlhdlts
with a 16/19 conversion, all you're doing is getting rid of that overdrive problem the mtx-3 has. by installing the 16/19 conversion, you're fixing the ratio of the car. this translates to almost even wear of tires front and rear and makes the car handle even better and even more consistent.
with a car that is setup to race, we almost every time have a 26mm front and 30mm rear. we cant rotate tires and put the 30mm in the front to even out wear. and in a long main, with a stock ratio, we cut the front tires down about 2mm to 4mm to compensate and get that consistent feel of the car. but with the conversion, it fixes the problem.
I hate to ask this now, what is the who conversion about? What is being converted ... thanks!
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Old 12-06-2003, 12:20 AM   #14
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Default 16/19 conversion

with the car being stock and assuming you're running foam tires, you'll notice that the rear tires wear so much faster than the front tires than normal. by changing the pulleys of the side belt to 19t on the front and 16t in the rear you'll wear the tires evenly. and the car handles great too.

you have to buy the pulley set for mtx-3 to do the conversion and also the 16/19 conversion side belt because once you change the pulleys to 16/19, the stock belt won't fit anymore.
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Old 12-06-2003, 12:42 AM   #15
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Default Re: 16/19 conversion

Quote:
Originally posted by evlhdlts
you have to buy the pulley set for mtx-3 to do the conversion and also the 16/19 conversion side belt because once you change the pulleys to 16/19, the stock belt won't fit anymore.
You forgot to include the most important information... You need to use a 4 mm split. Front tires need to be 4 mm smaller than rear tires.
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