Why upgrade to cvd kit ?

[SRBaja]

Could the cvd kit from hpi racing make any noticable speed difference ? What about durability ?

[Oyster]

Doesn't MIP make the CVD kit(s)?

[SirSpeedy]

MIP makes the CVD's.

What chassis are wanting them for?

[B3 Bomb]

With cvd's you have faster response and less back lash. They don't pop out like the dogbones unless you throw a pin.

[hpiguy]

To answer your question.

NO, the CVDs will not make any noticeable SPEED difference.

[Nairb]

Here's the deal with CVDs:

- First of all, they look cool (and who doesn't like cool technology?).

- Second, they are very tight, meaning there is almost zero "backlash" or zero "play" while starting from a stop or any other change like that. Because of this, you'll get consistent acceleration and braking.

- Because there is less play in CVDs, they will surely last longer than conventional universals or dogbone setups.

- Their design is tight in another way, as well; they are slim along their longitudinal axis (lengthwise). Because of this, they have less rotational inertia and that is good.

- They rarely need rebuilding, unless you run in sand or loose dirt conditions.

I'm a firm believer in CVDs for the above reasons. Some people think they're not necessary, but, frankly, they're not going to hurt ya.

[hpiguy]

I use them too, but they do not increase speed.

But yes they are more durable, have low backlash (not zero) and look good.

[SirSpeedy]

CVD's are more efficient at transfering power through the angles created with suspension movement. When under load(acceleration/heavy braking) they let the suspension move more freely.

Simply put:

CVD's give you more side bite, less forward traction, Less on power steering, more lowspeed steering. The only time you will notice the effects of CVD's vs. Bones is when on power or under heavy braking.

I usually run the Losi bones. I like CVD's on really slippery tracks, they should really be used as a tuning device, not a cool 'hop up'.

See ya....

[B3 Bomb]

Sir speedy how do you figure all of that? Less on power steering, they are just axels could you explain I am a little confused?

[SirSpeedy]

It is all about friction in the outdrive slot.

The most friction would be between the Losi universals, and steel outdrives. The least friction would be CVD's with composite/plastic outdrives.

Think of it this way, when you accelerate, the bones bind more than a CVD. In effect, it stiffens the rear of the car when you are on power, and less of the front to rear weight transfer is absorbed with the suspension, and more is transfered to the tires. A stiffer rear will give more forward traction.

As for your on power steering ?, since CVD's bind less, they allow the rear susp. to move more freely, and more weight is transfered to the rear, resulting in a loss of weight on the front tires, which will result is less on-power steering.

It is something you might want to play with at the track sometime.

How does all that sound?

[B3 Bomb]

That will do thanks! http://www.rccaraction.com/ubb/smile.gif