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Old 07-30-2010, 04:26 AM   #46
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Following from successful testing Litemodz are proud to release the new CVS Constant Velocity driveshaft designed for high level racing.
The new shaft provides constant velocity equalising input and output shaft speeds reduces wheel vibration to a minimum providing a much smoother transmission increasing steering and overall grip levels on the car by reducing unwanted tyre scrub.
Using the CVS in both the front and rear of the car provides a more stable and precise car that is easier to drive with the added benefit of improving transmission wind up and tyre wear.
The potential benefit of running constant velocity drive shafts can be seen when looking at the standard UJ.
Theoretically a motor spinning at 40000 rpm with a gear ratio of 7 to 1 will produce a wheel speed of 5714 rpm.
At zero angle this will remain at 5714rpm. However introduce angle into the joint and it begins to fluctuate. It is common to run with the drive shafts with some angle given the ride height to diff height toe angle and camber.
At 30 degrees (front) the speed fluctuation will be approximately 29% giving an actual speed fluctuation of: 1657 rpm which occurs twice per revolution in both directions.
5714 45 rotation
accelerating
7371 90 rotation
decelerating
5714 135 rotation
accelerating
4057 180 rotation
decelerating
5714 225 rotation
accelerating
7371 270 rotation
decelerating
5714 315 rotation
decelerating
4057 0 rotation
accelerating
5714 45 rotation

This can produce excessive tyre wear and load the transmission wearing drive shafts, cups, pulleys and belts.
At the same time the rear of the car will also produce some results. Assuming 3 degrees toe in and a shaft operating angle of some 10 degrees there will be an approximate speed fluctuation of 3 %.
That is +/- 171 rpm again in both directions.
Since the suspension on the car is relatively soft every time that car leans in a corner the speed fluctuation is increased maybe up to as much as 12% assuming the angle is now operating at close to 20 degrees.
This is as much as 685 rpm.
With CVS this is pretty much eliminated.
The new CVS which is due to go on sale at the beginning of August will be available for Touring cars initially, then extended to 1/10th Buggies by the end of the month then 1/8th Scale a month later.
The initial touring cars covered are:
Schumacher Mi4 Tamiya 416X Xray T3 Corally Phi Top Photon Cyclone TC Cyclone TCX
Yokomo BD5 Associated TC5

More details can be found at www.litemodz.com from Sunday the 1st of August
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Litemodz CVD-banner_02.jpg  
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Old 07-30-2010, 06:07 AM   #47
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Any chance to get this for M03/M05 and FF03?
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Old 07-30-2010, 07:05 AM   #48
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Will CVS be available for the 416WE too, please?

It's only mentioned 416X...so I've got some doubts.

thanks
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Old 07-30-2010, 07:06 AM   #49
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Will CVS be available for the 416WE too, please?

It's mentioned 416X only...so I've got some doubts.

thanks
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Old 07-30-2010, 07:08 AM   #50
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Quote:
Originally Posted by lynx75 View Post
Will CVS be available for the 416WE too, please?

It's only mentioned 416X...so I've got some doubts.

thanks
All 416's use the same axles and driveshafts.
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Old 07-30-2010, 07:09 AM   #51
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Quote:
Originally Posted by RossoTorro View Post
Any chance to get this for M03/M05 and FF03?
Doesn't the FF03 use the same shafts as the 416?
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Old 07-30-2010, 07:37 AM   #52
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We will be producing 46mm, 44mm and 42mm dogbones with the Tamiya axle.
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Old 07-30-2010, 07:55 AM   #53
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We will be producing 46mm, 44mm and 42mm dogbones with the Tamiya axle.
Nice!
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Old 07-30-2010, 11:27 AM   #54
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Looking forward to trying a set in my Mi4LP.
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Old 07-30-2010, 12:21 PM   #55
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I want to use these in the front of my car:

https://www.ssl-stormerhobbies.com/c...pn=CORSRC79189

But in order to do so I need the pin to be held in with a set screw like these:

https://www.ssl-stormerhobbies.com/c...=CORSRC79182ST

Any chance I can get the Litemodz like that?
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Old 07-30-2010, 06:27 PM   #56
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Pricing??
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Old 07-30-2010, 06:36 PM   #57
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Quote:
Originally Posted by jonrg View Post
With CVS this is pretty much eliminated.
Thanks for all that technical data. Just want to point out that this part of the statement isn't quite true (though you did qualify it with the "pretty much") because we still have a dogbone on the other end. Fortunately on the front, this sees much less angle change so the CVS in the spindle will DRAMATICALLY reduce the speed change but there still will be some.

The next step is to have a CVS on both ends with a slider in the middle

Also note, I'm sure you already know all this but just wanted to point it out to everyone else. I still like the design and will give them a try if you make some for 1/8th onroad.
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Old 08-01-2010, 04:02 AM   #58
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Pre-order your CVD's now at www.litemodz.com.
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Old 08-01-2010, 07:41 AM   #59
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Really look good but don't think I can stretch the pocket that far.
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Old 08-01-2010, 09:00 AM   #60
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Found my answer
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