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SWhat is Calibration Speed, how is it used?

Pault86

36 posts

Hoping Andy P. might drop by with a knowledgeable, authoritative answer, thanks!

woodcote

803 posts

Paul - it's not too hard to figure out. As a previous digital + RMS user, I'd have thought you'd be familar with the concept...

 

In the calibration process, you're setting the slowest possible speed for a specific car round the track. Then, in some of the simulations, power is dropped when you get a puncture, run out of fuel etc etc. The calibration ensures your car get round the track to the pits.

Andy P.

1707 posts


Community Moderator

What he said. :-)

Specifically, whenever you get a tire blow out, engine trouble or oil slick etc. the car goes to this speed.

Or when you use the "Yello Flag" option on ARC PRO all cars are set to this.

Dr_C

300 posts

Yes, so there could potentially be some confusion around what needs to be calibrated... in this case just the power level for cars during yellow flag events. In contrast the APB had a separate throttle controller calibration function. This appears unnecessary with the ARC PRO... viewing the BLE bytes from the hand controllers shows full 6 bit dynamic range on all controllers i.e. 0-63... so no additional calibration of the throttle is necessary. Perhaps this calibration takes place automatically during the pairing function, if required at all...

Anyway, a nice improvement over the APB.

C

Pault86

36 posts

Online, some people think the calibration speed is used in some way in determining the 25%, 50% or 75% power settings when you limit the power to a particular driver. Is it used for this purpose?

Andy P.

1707 posts


Community Moderator

Online, some people think the calibration speed is used in some way in determining the 25%, 50% or 75% power settings when you limit the power to a particular driver. Is it used for this purpose?

Errr... what?

I don't think the two are related at all. Max. power is max power and calibration is calibration. If you set calibration at 50% and max power at 50% then the car will never slow down but otherwise I would like to see what these people are on about...

woodcote

803 posts

Paul - that's unlikely. 100% is full power, say 12V, then 75% is 9V etc. This is the voltage provided by the chip to the motor. It would be easy to test your own theory by attaching a volt meter across the output leads of a chip that is hooked up to ARC Pro and playing with the power and calibration settings. Or just attach to the motor terminals.

 

I suspect the calibration is based on the percentage power too. As Andy suggested, if you set a high low speed calibration and a maximum power of 20% percent, then there's probably no app-controlled drop of power. From using SSDC and RCS64, I'm pretty sure that's how they do their 'safe speed' settings. That could be tested in the same way. In my opinion, the ARC low speed calibration is neater and more user-friendly, especially after the app update last month.

Pault86

36 posts

Thanks for your answers.Laughing

Hank54

1 post

Hi,

I just bought  a scalextric and was lead to believe that I could contol the maximum speed of the cars so that children can use them without crashing at top speed ..

Any suggestions?

Andy P.

1707 posts


Community Moderator

It's not just for children! Particularly if you run magless (aka gravity cars) you will likely want to reduce the power.

Options:

If you are using ARC ONE you use the little dial on the side (you need to use a flathead screwdriver) and you can turn it to limit how far teh trigger can be pulled. There is a new style of analog controller coming out with a slider that can be set to 25%, 50%, 75% and 100% to limit the trigger pull.

For ARC AIR and ARC PRO you go into the driver set up and set the maximum power in 1% increments.

You can also adjust the how the power is delviered by selecting one of 4 profiles or making your own. For example I always select a profil where maximum power is not delivered right away, that way the cars don't get full power until the trigger is pressed for a few seconds.

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