3LikesMugen MBX6
05-31-2012, 01:39 PM
Im a bit confused with ratio gears for my mugen
standard kit comes with 44/13 F&R and 13/46 ,
EU R comes with 42/12 and 13/44
which one have more torque and which one have more speed?
standard kit comes with 44/13 F&R and 13/46 ,
EU R comes with 42/12 and 13/44
which one have more torque and which one have more speed?
05-31-2012, 03:17 PM
Tech Fanatic
iTrader: (7)
not really about torque and speed its affects how it drives in corners. EU has the underdrive in the front which pulls the car around a bit more is my understanding.
06-01-2012, 05:16 AM
To clear up:
Mugen MBX-6R and MBX-6R US Kit:
Front AND Rear Diff is 44/13
Mugen MBX-6R EU Kit:
Front AND Rear Diff is 42/12
Overdrive: Front Diff: 42/12 and Rear Diff: 44/13
Underdrive: Front Diff: 44/13 and Rear Diff: 42/12
What is Overdrive / Underdrive: (A good Explanation from Losi XXX-S)
"The LOSA-3211 Pulley Set includes a 41T pulley. This allows you to over-drive (make the front tires turn faster) or underdrive (make the front tires turn slower) the car. Using the 41T pulley in the front of your car will give
you overdrive. This will give the car less offpower steering and will give you more steering exiting the turn. Running the 41T pulley in the rear will underdrive the car. This will give you more steering entering the turn and less exiting the turn."
Tip (only my opinion):
The Front AND Rear Diff 44/13 is for slippery to medium grip tracks.
The Front AND Rear Diff is 42/12 is for high-grip and/or tight tracks.
But, what ever you read, the Overdrive/Underdrive thing is something you have to test on your car yourself. It change the car feeling and that depend how you drive and how you like your car feels.
Mugen MBX-6R and MBX-6R US Kit:
Front AND Rear Diff is 44/13
Mugen MBX-6R EU Kit:
Front AND Rear Diff is 42/12
Overdrive: Front Diff: 42/12 and Rear Diff: 44/13
Underdrive: Front Diff: 44/13 and Rear Diff: 42/12
What is Overdrive / Underdrive: (A good Explanation from Losi XXX-S)
"The LOSA-3211 Pulley Set includes a 41T pulley. This allows you to over-drive (make the front tires turn faster) or underdrive (make the front tires turn slower) the car. Using the 41T pulley in the front of your car will give
you overdrive. This will give the car less offpower steering and will give you more steering exiting the turn. Running the 41T pulley in the rear will underdrive the car. This will give you more steering entering the turn and less exiting the turn."
Tip (only my opinion):
The Front AND Rear Diff 44/13 is for slippery to medium grip tracks.
The Front AND Rear Diff is 42/12 is for high-grip and/or tight tracks.
But, what ever you read, the Overdrive/Underdrive thing is something you have to test on your car yourself. It change the car feeling and that depend how you drive and how you like your car feels.
Last edited by BigP; 06-01-2012 at 06:02 AM.
06-01-2012, 05:33 AM
Tech Apprentice
where i can find some front lower arm older, with inside pin? (i dont be able to explain in english, i want on the front, the same system of mp9 or xb9 etc, with NO NUT)
some brand make this?
i need to be faster on change anterior diff
some brand make this?
i need to be faster on change anterior diff
06-01-2012, 05:46 AM
To clear up:
Mugen MBX-6R and MBX-6R US Kit:
Front AND Rear Diff is 44/13
Clutch Bell 13, Spur Gear: 46.
Mugen MBX-6R EU Kit:
Front AND Rear Diff is 42/12
Clutch Bell: 13, Spur Gear 44.
Overdrive: Front Diff: 42/12 and Rear Diff: 44/13
Underdrive: Front Diff: 44/13 and Rear Diff: 42/12
What is Overdrive / Underdrive: (A good Explanation from Losi XXX-S)
"The LOSA-3211 Pulley Set includes a 41T pulley. This allows you to over-drive (make the front tires turn faster) or underdrive (make the front tires turn slower) the car. Using the 41T pulley in the front of your car will give
you
overdrive. This will give the car less offpower steering and will give you more steering exiting the turn. Running the 41T pulley in
the rear will underdrive the car. This will give you more steering entering the turn and less exiting the turn."
Tip (only my opinion):
The Front AND Rear Diff 44/13 is for slippery to medium grip track.
The Front AND Rear Diff is 42/12 is for high-grip and/or tight tracks.
But, what ever you read, the Overdrive/Underdrive thing is something you have to test on your car yourself. It change the car feeling and that depend how you drive and how you like your car feels.
Mugen MBX-6R and MBX-6R US Kit:
Front AND Rear Diff is 44/13
Clutch Bell 13, Spur Gear: 46.
Mugen MBX-6R EU Kit:
Front AND Rear Diff is 42/12
Clutch Bell: 13, Spur Gear 44.
Overdrive: Front Diff: 42/12 and Rear Diff: 44/13
Underdrive: Front Diff: 44/13 and Rear Diff: 42/12
What is Overdrive / Underdrive: (A good Explanation from Losi XXX-S)
"The LOSA-3211 Pulley Set includes a 41T pulley. This allows you to over-drive (make the front tires turn faster) or underdrive (make the front tires turn slower) the car. Using the 41T pulley in the front of your car will give
you
overdrive. This will give the car less offpower steering and will give you more steering exiting the turn. Running the 41T pulley in
the rear will underdrive the car. This will give you more steering entering the turn and less exiting the turn."
Tip (only my opinion):
The Front AND Rear Diff 44/13 is for slippery to medium grip track.
The Front AND Rear Diff is 42/12 is for high-grip and/or tight tracks.
But, what ever you read, the Overdrive/Underdrive thing is something you have to test on your car yourself. It change the car feeling and that depend how you drive and how you like your car feels.
mbx6r has a 44 spur i believe the US haa a 44 too sir
06-01-2012, 06:38 AM
After all as a read smaller pinion gear 12t gives more torque , and smaller crown gear gives more top end if im correct , so the 44/13 have more torque and less top speed and 42/12 less torque and more top speed , as i understand of what everybody writes its the opposite on mugen...............
06-01-2012, 07:10 AM
After all as a read smaller pinion gear 12t gives more torque , and smaller crown gear gives more top end if im correct , so the 44/13 have more torque and less top speed and 42/12 less torque and more top speed , as i understand of what everybody writes its the opposite on mugen...............
44/13 = ratio 3.38 --> more Speed
42/12 = ratio 3.50 --> more Torque
With the spur gear 44 or 46 (and clutch bell 13 or 14) you can to "fine" adjustment's for the overall ratio.
06-01-2012, 07:32 AM
There are very few cases when you would want the front wheels spin slower than the rear!
Rear under-drive = front over-drive
06-01-2012, 07:49 AM
I think your looking for a front captured hinge pin system? Check out the anti-dive kit made by M2C Racing.
06-01-2012, 08:43 AM
After all as a read smaller pinion gear 12t gives more torque , and smaller crown gear gives more top end if im correct , so the 44/13 have more torque and less top speed and 42/12 less torque and more top speed , as i understand of what everybody writes its the opposite on mugen...............
06-01-2012, 09:30 AM
I cut down a 2mm hex key to hold the end of the pins while removing the nuts.
Cuts diff change time in half, or more.
Hope this helps.
06-01-2012, 09:34 AM
I'm not 100% sure but it seems like you guys are talking about gear ratio in the diff boxes with under and over drive. Are you guys also taking about gear ratio in the center when referring to torq and high speed? I understand about the tire ratation with under and over gears but didn't know that it effects torq and high speed. Thought that was all dealing with the center gear. I have 46t on my rspec and wanted to try the over gear for more exit turnig. But will this only work well with the 44t spur in the center and not the 46t?
Seems like this topic shows up every 2-3 months. To overdrive the front end (front tires spin faster than rear) you use the optional (42/12) gear in the rear gearbox.
06-01-2012, 11:41 AM
guys please concentrate im seeing 2 different opinions here...
44/13 gives more top end/speed
42/12 gives more bottom/torque
then why you use more torque on rear wheels than the front?
44/13 makes the wheel spin faster , that means that have more torque, correct?
and 42/12 makes the wheels spin slower - more speed..
Which one is correct??
44/13 gives more top end/speed
42/12 gives more bottom/torque
then why you use more torque on rear wheels than the front?
44/13 makes the wheel spin faster , that means that have more torque, correct?
and 42/12 makes the wheels spin slower - more speed..
Which one is correct??
06-01-2012, 12:19 PM
Yes that's what I'm aware of but the last few post threw me off because it seemed one person was asking about under over drive then it seem like another was asking about torq and speed which I'm assuming the gears effect but mostly during turning. Correct? Is it noticeable outside of just turns?
06-01-2012, 12:24 PM
guys please concentrate im seeing 2 different opinions here...
44/13 gives more top end/speed
42/12 gives more bottom/torque
then why you use more torque on rear wheels than the front?
44/13 makes the wheel spin faster , that means that have more torque, correct?
and 42/12 makes the wheels spin slower - more speed..
Which one is correct??
44/13 gives more top end/speed
42/12 gives more bottom/torque
then why you use more torque on rear wheels than the front?
44/13 makes the wheel spin faster , that means that have more torque, correct?
and 42/12 makes the wheels spin slower - more speed..
Which one is correct??
44/13 will be for more top speed and slower acceleration. This gear should help reduce wheelspin if you're on a loose track.
44/12 will have less top speed but quicker acceleration. If you are on a high bite track this gear should get you off turns quicker.