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Old 05-12-2009, 07:16 PM   #901
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Any reason why the front springs on mrx series or so short?

My home track has pretty high grip and good wear and you can run really small tires...a bit annoying to crank the spring perch down so far.
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Old 05-12-2009, 07:39 PM   #902
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I was wondering the same thing, what if you just used rear springs of the same weight?
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Any reason why the front springs on mrx series or so short?

My home track has pretty high grip and good wear and you can run really small tires...a bit annoying to crank the spring perch down so far.
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Old 05-12-2009, 07:58 PM   #903
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I think that front and rear springs are different lbs even if they are the same color.
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Old 05-12-2009, 08:13 PM   #904
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Does anybody have a weight chart for Mugen springs?
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I think that front and rear springs are different lbs even if they are the same color.
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Old 05-12-2009, 08:24 PM   #905
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Any reason why the front springs on mrx series or so short?

My home track has pretty high grip and good wear and you can run really small tires...a bit annoying to crank the spring perch down so far.
Use the MRX-4R front tower, it lowers the shocks a bit. Red rear springs are a little softer than white fronts.
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Old 05-12-2009, 09:00 PM   #906
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From the Mugen web site forum:

Grey Rear: 33.3
White Rear: 40.7
Grey Front: 42.2
Red Rear: 46.6
Pink Rear 49.8
White Front:51.7
Yellow Front 53.9
Black front 67.5
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Old 05-13-2009, 07:20 AM   #907
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That sounds close to what Paul posted way back in this thread somewhere.
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Old 05-13-2009, 10:27 PM   #908
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Hello everyone! Can anyone tell me about how much weight can I shed using the upper and lower Titanium screw sets.? Pros/Cons
Thanks, Ken
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Old 05-14-2009, 07:05 AM   #909
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Hello everyone! Can anyone tell me about how much weight can I shed using the upper and lower Titanium screw sets.? Pros/Cons
Thanks, Ken
well im not sure of the weight savings, but with titanium and pretty much anything where your sacraficing strength for weight, its going to be a compromise, meaning titanium is lighter but in the event of a crash it will most likely snap, when the steel might bend, and you can at least finish race,i run the screw sets my self, but oppet to remove them in the impact/high stress zones, as i know that at least the steel bending,will at least still hold it togther
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Old 05-14-2009, 07:30 AM   #910
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The weight savings really adds up, not sure the total though. I've used titanium screws for years and have never had one break. I would recommend a good quality set of hex drivers though, they can strip easier that steel.
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Hello everyone! Can anyone tell me about how much weight can I shed using the upper and lower Titanium screw sets.? Pros/Cons
Thanks, Ken
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Old 05-14-2009, 09:11 AM   #911
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The weight savings really adds up, not sure the total though.
Weird.... you can tell it saves a lot but you can not tell how much.

What will it save is the question? 20 to 30 gram?
If so then I think it is wise to do something with the driving techniques or work on the drivetrain. Saving the same amount of weight in the drivetrain will do much more!
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Old 05-14-2009, 10:30 AM   #912
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+1 Roelof

If it doesnt spin or roll no value in lightweight parts as most car are at or below minimum weight anyway.

Lt weight layshafts and pulley will offer a much better value and an actual performance gain.
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Old 05-14-2009, 11:39 AM   #913
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I only use the top set. Why put Ti screws in the bottom of the chassis only to add lead to the top of the chassis? I want a steel chassis myself. Get that weight low.
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Old 05-14-2009, 12:11 PM   #914
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I only use the top set. Why put Ti screws in the bottom of the chassis only to add lead to the top of the chassis? I want a steel chassis myself. Get that weight low.
Only issue on this is that it doesn’t take into account "Moment of inertia" This means that the object will react to torque with less force. RC transaction is that the car will rotate easier and thus quicker if the chassis has a reduced moment of inertia.

Bottom line is:
1)always run a light as possible (by rules if weights are taken)
2)move any weight required as low and as close to the center of the chassis.
3)move any weight from higher locations on the chassis or from locations further from the center of the chassis to lower or more centralized locations.
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Old 05-14-2009, 04:53 PM   #915
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Yeah, hold the bag of titanium screws in your hank and then hold the steel ones...I just didn't weigh them.
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Weird.... you can tell it saves a lot but you can not tell how much.

What will it save is the question? 20 to 30 gram?
If so then I think it is wise to do something with the driving techniques or work on the drivetrain. Saving the same amount of weight in the drivetrain will do much more!
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