Announcement

**Vikki** · 09-08-2012, 09:49 AM

Yes, set it to transmitter mode and set your own d/r and expo. The other modes in the AR7200BX are presets with expo and d/r built in.

**moonmanflyer** · 09-08-2012, 10:25 AM

I find tx mode is by far the best way to use the beastx, you can play with the settings very easily just using your travel adjusts and works really well

**highlightshadow** · 09-08-2012, 10:31 AM

Think i need to bite the bullet and switch to Tx mode ... been flying it on pre-sets but feel the pitch response is subdued (too much expo on pitch channel) but cyclic response is ok ... Want to re-balance it to feel more even in sticks

Anyone got some good starting points for 450 class heli?

**Si_B** · 09-08-2012, 10:34 AM

I just put everything to 100% and about 20% expo and tweaked it from there. To be honest, the only thing I changed was to reduce the tail to 90%, everything else just felt more locked in.

**dani_r** · 09-08-2012, 10:44 AM

Can't go wrong with Tx mode buddy. I messed around with the presets for ages, once I put my own in, flies like a dream

**muscleflex** · 09-08-2012, 10:45 AM

Originally posted by moonmanflyer View Post

I find tx mode is by far the best way to use the beastx, you can play with the settings very easily just using your travel adjusts and works really well

What's the travel adjust for? (or you mean dual rates?)

**dani_r** · 09-08-2012, 11:10 AM

Originally posted by muscleflex View Post

What's the travel adjust for? (or you mean dual rates?)

Travel Adjust and DR are different things.

Travel Adjust or ATVs basically sets the roll rate of the heli. The DR allows you to set different limits on your servos etc, I've never used them. Have a look round your radio and you'll find them. There is a great Finless video over on HF about Dual Rates that helped me get my head round it, but still don't see the need for helicopters really.

My advise would be to just put it in Tx mode. Keep your ATVs at 100% (standard settings) and see how you like it. Get it up in the air and roll and flip it. See if it's too sharp or too soft for you. If it's too sharp on the roll or flip then adjust your Ail/Ele ATV to suit. (100%+ will make it flip/roll faster and 99% or less will make it flip slower).

Then set your expo to how you like it, start with a small amount like 10% and keep upping it until it's how you want it. I never used expo until I started doing hurricanes and pie-dish tricks as the smaller corrections make for nicer moves, but that's just me

**Spanner** · 09-08-2012, 11:59 AM

Nicely said Dani.

My N5 is using 115% Ail and Ele and 110% on the tail, but I'm still fiddling. The 450 is up to 125% Ail and ele and the same on the tail I think...

**Bronek** · 09-08-2012, 12:13 PM

IIRC, BeastX manual says not to use ATV (or travel adjust) on your Tx and leave it at 100%, or am I confused here?

Of course there is also range in DR settings (normally 100% for aileron, elevator and rudder) and this is what I use, with parameter B set to Tx.

**Spanner** · 09-08-2012, 12:17 PM

From page 65 of the manual

"The maximum rotation rate for aileron, elevator and rudder can then be adjusted by increasing or decreasing the servo travel for the corresponding function in your transmitter. Approx. 100% stick
throw (servo throw in the transmiter) are equivalent to full rotation rate in this mode."

**Mark_T** · 09-08-2012, 12:22 PM

Originally posted by dani_r View Post

Travel Adjust and DR are different things.

Travel Adjust or ATVs basically sets the roll rate of the heli. The DR allows you to set different limits on your servos etc, I've never used them.

Surely, in the context of a FBL BeastX heli using transmitter mode, these are both operating on the same 'function' i.e. they control what the FBL unit considers to be the maximum rotation rate on each axis?

Setting the ATV will set the limit on the rotation rate that you can command with the dual rates at 100%.

Adjusting the dual-rates lets you change the maximum rate without having to change the ATV.

So by using dual-rates, either on a switch or as part of your flight modes you can change the maximum rotation you can command to suit your needs.

So for example with ATV at 110% and dual-rate at 100% full stick deflection would tell the FBL unit to rotate at whatever it interprets from '110%'.

With ATV at 110% and dual-rate at 50%, full stick deflection would tell the FBL unit to rotate using 55% as the command.

Thus using the dual-rate option you can vary your range of commands to the FBL unit and hence control sensitivity in different flight modes or different dual-rate settings without having to change the ATV.

**Bronek** · 09-08-2012, 12:48 PM

Thanks Mark, that makes perfect sense. I just remembered that since Tx is (and must be) set to swashplate mechanical mixing 90 degrees, these two would indeed be equivalent. This means the 100% AVT condition I (wrongly) remembered must have been in the context of preparation for setup only.

But then using DR is more useful as you rightly noticed, to enable changing travel setup with a flick of switch.

**dani_r** · 09-08-2012, 01:03 PM

Originally posted by Mark_T View Post

Surely, in the context of a FBL BeastX heli using transmitter mode, these are both operating on the same 'function' i.e. they control what the FBL unit considers to be the maximum rotation rate on each axis?

Setting the ATV will set the limit on the rotation rate that you can command with the dual rates at 100%.

Adjusting the dual-rates lets you change the maximum rate without having to change the ATV.

So by using dual-rates, either on a switch or as part of your flight modes you can change the maximum rotation you can command to suit your needs.

So for example with ATV at 110% and dual-rate at 100% full stick deflection would tell the FBL unit to rotate at whatever it interprets from '110%'.

With ATV at 110% and dual-rate at 50%, full stick deflection would tell the FBL unit to rotate using 55% as the command.

Thus using the dual-rate option you can vary your range of commands to the FBL unit and hence control sensitivity in different flight modes or different dual-rate settings without having to change the ATV.

I see what your saying, and it's a very valid point. But I still can't see a need for it in day-to-day flying. Does anyone use DR on a full size helicopter for general flying? I know they use them on the MCPX etc to limit travel and avoid blowouts, but a proper heli shouldn't need that. It may be handy if you want to have your heli 'smoother' one minute and then more aggressive the next, but surely that's a bit of a feature that most would get bored of quickly?

Plus, Dual Rates can be another headache that the everyday flyer can do without, especially a beginner IMO

**Mark_T** · 09-08-2012, 01:32 PM

Originally posted by dani_r View Post

It may be handy if you want to have your heli 'smoother' one minute and then more aggressive the next, but surely that's a bit of a feature that most would get bored of quickly?

If all you fly is 3D then I guess you may not need to use the option, but if you want to fly a mixture of both precise hovering manoeuvres and also aerobatics, in those conditions, wouldn't you want the ability to change the amount of control response available so you had more stick deflection for less rotational movement?

You can learn to fly without it, but like expo, it is another tool in the box to use or not as you wish.

Announcement

AR7200BX D/R & Expo

AR7200BX D/R & Expo

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