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Old 02-28-2007, 02:54 PM   #1981
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Quote:
Originally Posted by Luke W
Umm, I think you have it backwards. When the front tires are smaller, the front drivetrain will want to turn slower, not faster...of course it's the same with the rear...maybe you're thinking that the actual tire will have to turn faster to keep the car going the same speed???
Due to the oneway, the front and the rear tires can turn at diferent speeds. It the rear is smaller, 1 turn of the front wheel will runs certain distance. To the rear tire runs the same distance, it will have to turn faster (more than 1 turn to run the same distance). On this scenario, the oneway will desengage and you will have traction only on the front wheels (assuming that the front tires does not slip) Do you agree?
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Old 02-28-2007, 03:37 PM   #1982
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Originally Posted by eduardo_garcia
Due to the oneway, the front and the rear tires can turn at diferent speeds. It the rear is smaller, 1 turn of the front wheel will runs certain distance. To the rear tire runs the same distance, it will have to turn faster (more than 1 turn to run the same distance). On this scenario, the oneway will desengage and you will have traction only on the front wheels (assuming that the front tires does not slip) Do you agree?
Oh yeah, I didn't understand the way you explained it before...thought you were saying something totally different...but something you got wrong is that the power will only go to the front wheels. Remember that the rear pully and brake are attached to the shaft and are not associated with the one-way, therefore there's no way that you could have power only to the front wheels...there will always be power to the rear...
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Old 02-28-2007, 03:39 PM   #1983
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Mark,
The CVDs are holding up great, I just keep on going like the energizer bunny now...
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Old 02-28-2007, 07:48 PM   #1984
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Quote:
Originally Posted by Jo Gutierrez
The 720 07 will include CVD for the front according to the website.

The description says:
Driveshafts

The 720 '07 comes supplied with the finest Spring Steel driveshafts capable of withstanding constant punishment; these shafts are ultra durable and very stiff allowing you to put all your power to the tarmac. The rear of this car uses dogbones while the front uses the supplied CVD shafts.



I'm not sure what the part number of the "new" CVD (OR if it's even new for that matter). However, here's how the "old" CVDs look like:
http://www.serpent.com/image.php?ImageID=40456&size=350



And the "new" ones that's included in the 720 07 look like this:
http://www.serpent.com/image.php?Ima...68125&size=350


They look different and may be new and the description says spring steel material.
i have the First CVD both on the front and the rear of my 720 but when you say that the 720 07 CVD is spring steel material does this mean that it is more durable than the first released CVD's
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Old 02-28-2007, 07:49 PM   #1985
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Quote:
Originally Posted by Julius

It feels sort of running a front one way (when you are actually running a diff) without losing the braking power.

Also because of the way the 3rd one way is setup, you will also find you get more steering under braking when running a diff or spool up front.
Is this 3rd one-way can be used in 710?
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Old 02-28-2007, 09:59 PM   #1986
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Quote:
Originally Posted by buboy28
i have the First CVD both on the front and the rear of my 720 but when you say that the 720 07 CVD is spring steel material does this mean that it is more durable than the first released CVD's
They were meant to be more durable. The new style, if you havent' seen them, the outdrives are all black instead of a silver coating, and the cvd axle itself uses more material around the break point of before. They do resist breakage upon impact more than the first versions.
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Old 02-28-2007, 10:03 PM   #1987
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Quote:
Originally Posted by thamjk
Is this 3rd one-way can be used in 710?
If the 2speed shaft is the same length, then the shaft should be able to fit onto the 710 since the shafts and pulley adapters are the same.
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Old 02-28-2007, 11:51 PM   #1988
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CVD's are a different material, same number!
Nothing special about them, i believe this is just because Hudy doesn't supply them anymore... i've been using the new ones and they are fine....
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Old 03-01-2007, 12:20 AM   #1989
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Quote:
Originally Posted by _cyclops_
CVD's are a different material, same number!
Nothing special about them, i believe this is just because Hudy doesn't supply them anymore... i've been using the new ones and they are fine....
How do we see which is the newer CVDs. if they both carry the same number.

You mean the old CVDs are supplied by HUDY?
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Old 03-01-2007, 12:42 AM   #1990
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Quote:
Originally Posted by thamjk
How do we see which is the newer CVDs. if they both carry the same number.

You mean the old CVDs are supplied by HUDY?
The newer ones are all black (on the outdrive), and the axle itself has more material (thicker) around the joint than the original.
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Old 03-01-2007, 12:54 AM   #1991
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Quote:
Originally Posted by nigelnuggets
They were meant to be more durable. The new style, if you havent' seen them, the outdrives are all black instead of a silver coating, and the cvd axle itself uses more material around the break point of before. They do resist breakage upon impact more than the first versions.
ok, thanks those black wheel axles matched the 720 07 chassis which is black also
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Old 03-01-2007, 01:05 AM   #1992
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Quote:
Originally Posted by buboy28
ok, thanks those black wheel axles matched the 720 07 chassis which is black also
Yeah and it will be so fast it will rip the asphalt which is also black.... ok I'll stop trying too hard .

But seriously though, I'm really excited about this 720 07 car .
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Old 03-01-2007, 04:22 AM   #1993
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Quote:
Originally Posted by Luke W
Oh yeah, I didn't understand the way you explained it before...thought you were saying something totally different...but something you got wrong is that the power will only go to the front wheels. Remember that the rear pully and brake are attached to the shaft and are not associated with the one-way, therefore there's no way that you could have power only to the front wheels...there will always be power to the rear...
I may be missing something, but the 24t pulley is attached on the main shaft thru the oneway.
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Old 03-01-2007, 04:37 AM   #1994
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Quote:
Originally Posted by Luke W
Oh yeah, I didn't understand the way you explained it before...thought you were saying something totally different...but something you got wrong is that the power will only go to the front wheels. Remember that the rear pully and brake are attached to the shaft and are not associated with the one-way, therefore there's no way that you could have power only to the front wheels...there will always be power to the rear...
That is incorrect. The one way bearing sits inside the rear pulley/brake rotor assembly. The front drivetrain is still fixed to the 2speed shaft.

So it is the fronts, that actually will always receive power. Only in the case where the front rollout is the same or smaller than the rear will the one-way always be engaged (then the entire drivetrain will act as if there were no one way at all).

To address FastHarrys question:
Yes you can run an overdrive setup. Normally though when running a pulley setup that provides more drive to the front (as with the optional 18t pulley in the 720) you will also run smaqller diameter front tires to make the drive 1:1 again. So then not a lot would change. But if you cut the tires so there is more drive to the front, you would always have power to the front wheels, with the rears kicking in when the fronts start slipping. Off throttle the one-way will prevent the drivetrain bindup, which removes some of the turn in oversteer often associated with overdrive.
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Old 03-01-2007, 04:40 AM   #1995
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In general the 3rd one way is a feel thing. You will need to practice with it, as the car will not slow down as much when off throttle in a corner. Some people interpret this as a reduction in steering due to less weight transfer.

It is also easier to overshoot corners as you miss some of the natural drag in the car.

It feels a bit like running an NTC3....
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