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Old 02-06-2007, 12:57 AM   #7276
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Hey A.I. ~ You done building your car yet??
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Old 02-06-2007, 01:56 AM   #7277
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Ran my MTX-4 for the first time this weekend with a Lola body. Put in about 3 tanks during open practice, just to get a feel for the car. I was still breaking in the TZ that I put in it (running really rich), so I couldn't push it that hard yet. In the infield, the car was great. The steering is very responsive (I'm using a Futaba S9451). The car drives really well and I'm pretty happy with the setup, except that the car parks itself (rear end comes around about 90 degrees and stops) on corner entry, under hard under braking prior to taking a hair pin turn. If I brake sufficiently before taking the turn, it's just fine. I didn't have any time for setup tuning, but it's something I definitely need to nail down the next time I run the car. I got several suggestions from RoyU (Thanks again Roy ). Anybody else have some suggestions?

Thanks!

Tires: NitroShoes, 40 shore front and rear
Front Diff: 30K
Rear Diff: 10K
Sway bar/blade: 3Racing, blades flat
Setup: As specified in the kit setup sheet (downloaded from the Mugen Seiki Japan Web site)
Body: Protoform Lola, front wheels centered over front wheel well
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Old 02-06-2007, 02:04 AM   #7278
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Ok, the Lola Body makes everything easier.

Do you use 400 oil in the damper and the 1.3 hole in the front damper? When not, try it. Feels much better.

A nice tuning is to use 20.000 oil in the rear diff.
mixed the 10.000 and 30.000 mugen.

And put the O-ring in the diffs away.
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Old 02-06-2007, 02:23 AM   #7279
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Quote:
Originally Posted by jaykay
And put the O-ring in the diffs away.
Thanks JayKay ~ The only part I didn't understand is about the o-rings. Kannst auf Deutsch sagen. Welche tiel meinst du?

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Old 02-06-2007, 02:35 AM   #7280
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Yes, i can say it in german. Itīs called: O-RING

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Old 02-06-2007, 02:38 AM   #7281
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Quote:
Originally Posted by jaykay
Yes, i can say it in german. Itīs called: O-RING

do you mean that you take the o-rings out??
How does this effect it?
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Old 02-06-2007, 02:40 AM   #7282
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Quote:
Originally Posted by jaykay
Yes, i can say it in german. Itīs called: O-RING
Thanks. There are two different types of o-rings in the diff (S3/S5) and I wasn't sure what you meant by "put away".
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Old 02-06-2007, 02:45 AM   #7283
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Quote:
Originally Posted by rmdhawaii
Thanks. There are two different types of o-rings in the diff (S3/S5) and I wasn't sure what you meant by "put away".
I'm still not sure what is meant by "Put o-rings away"
I must have missed something
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Old 02-06-2007, 02:46 AM   #7284
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Quote:
Originally Posted by itchy b
do you mean that you take the o-rings out??
How does this effect it?
When removing the circled O rings it just like running a lighter diff oil

Just takes some of the friction off the smller sun gears.

They say it makes the diff action smoother but I could never tell the difference.
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Old 02-06-2007, 02:46 AM   #7285
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Yes, take the o-rings out. After it, the diff works like a diff. With the o-ring you break the diff so when you use for example 30.000 diff oil, you havent the effect of 30.000 diff oil. It`s difficult for me to explain that. Just try it.
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Old 02-06-2007, 02:47 AM   #7286
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Quote:
Originally Posted by Kanea6
i have a problem with my Mugen MTX-4 i have had the car for about 1yr now and it has started to strip gears. on a race meets i will probly strip about 4 spurs a race meet. The gears striping has cost me so many race wins. it has most recently cost me win in the c final in the summernats is wollongong Australia. could some please help me fix this problem.

Thanks

The oneway bearing on the first gear spur may be locking-up momentarily not allowing it to freewheel when the second gear spur kicks in. Had that happen to me with my MTX-2. You will need to clean the oneway bearing out with motor spray really good and re-lube it ONLY with AE Stealth/ball diff grease or oneway specific grease. If that doesnt work then change the oneway bearing/gearholder.

Another thing you could check is the shaft that the oneway rides on. It may be developing ridges where the oneway's roller gets locked up on.

Hope this helps.
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Old 02-06-2007, 02:49 AM   #7287
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Quote:
Originally Posted by jaykay
Yes, take the o-rings out. After it, the diff works like a diff. With the o-ring you break the diff so when you use for example 30.000 diff oil, you havent the effect of 30.000 diff oil. It`s difficult for me to explain that. Just try it.
Thanks for clarifying that.

itchy_b: put away = don't use.
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Kyosho V-ONE RRR WC (x2) \ XRAY T2'007 \ Also owned: XRAY NT1 & Mugen MTX-4
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Old 02-06-2007, 02:54 AM   #7288
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Ok,
that makes sense now
I will try that as i had a problem with oil leaking out of the out drives which i fixed by using the shock type O-rings which are a little thicker but solved the problem but i think that they are making the diff bind up slightly
Thanks for the tip as i think that this will cure the issue and make the diff much more consistent
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Old 02-06-2007, 02:55 AM   #7289
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Quote:
Originally Posted by rmdhawaii
Ran my MTX-4 for the first time this weekend with a Lola body. Put in about 3 tanks during open practice, just to get a feel for the car. I was still breaking in the TZ that I put in it (running really rich), so I couldn't push it that hard yet. In the infield, the car was great. The steering is very responsive (I'm using a Futaba S9451). The car drives really well and I'm pretty happy with the setup, except that the car parks itself (rear end comes around about 90 degrees and stops) on corner entry, under hard under braking prior to taking a hair pin turn. If I brake sufficiently before taking the turn, it's just fine. I didn't have any time for setup tuning, but it's something I definitely need to nail down the next time I run the car. I got several suggestions from RoyU (Thanks again Roy ). Anybody else have some suggestions?

Run a little less droop/down stop. You are getting too much weight transfer to the front and unloading the rear suspension.
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Old 02-06-2007, 02:55 AM   #7290
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Quote:
Originally Posted by rmdhawaii
Thanks for clarifying that.

itchy_b: put away = don't use.
Which = Put them in the parts tray
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