Futaba's 7C Radio System Comparison and Review - Page 2

AMCross · Apr 12, 2004, 10:02 PM

Happy to help, Mike! Oh, the radios will do lots, lots lots more than this.... :-)

the 7c will handle rudder-to-aileron and ruddder-to-elevator coupling for you just fine. (although if you have flaperon or aileron differential in use, it may only move the one aileron servo -- which will still work just fine to fix your coupling, just might be a surprise to you!)

Sincerely,
Mrs. AnnMarie Cross
Fun Manager
RCGroups.com

BGR · Apr 14, 2004, 09:22 PM

What do you mean by the radio wont trim the second servo? Does this mean that If I use 2 servos for Aileron or Vtail that only one servo will trim?

AMCross · Apr 14, 2004, 10:24 PM

BGR, no -- if you use a programmable mix that you set up yourself to do 2 aileron servos, or 2 rudder servos, or vtail or elevon, instead of the built in mix the trim wont work the 2nd servo. If you use the built in functions -- flaperon (including aileron differential), vtail, elevon, etc, -- then the trims work just fine.
AMC

BGR · Apr 15, 2004, 12:05 AM

Thanks for the info AMCross, I have been out of the hobby for sometime and only have a Futaba PCM that uses the 512 PCM receiver. So I need a new radio and have been looking at the 7CAP. I do not want to buy a system where I will be limited too much.

I have heard some negative things about the 7CAP which concerned me. These include the Trim issue I had asked you about and another concerning the timer function used in conjunction with the throttle. It has been noted that if the throttle is setup to run the timer with something other than the default timer start point of 50% throttle that the servo end point settings are erased.

Are you aware of any issues with throttle/timer programming and the loss of settings?

AMCross · Apr 15, 2004, 12:13 AM

BGR,

Just to be clear, the trim/link issues aren't a bug or flaw, they're simply a feature not included in this middle-end computerized radio.

Yes, I've read a bit about it. Apparently if you set up the timer function incorrectly, pressing and holding the dial during the setup, you will cause the servo's end points to go to 0 -- an obvious flaw you'd see prior to take off so not as catastrophic as it sounds -- but if set the timer normally, then this issue does not occur.

I have not personally recreated this issue, and am only repeating what I have read, including a note from the distributor that a tech notice will be added to the radio's site to help users avoid this mistake.

Sincerely,
Mrs. AnnMarie Cross
Fun Manager
RCGroups.com

BGR · Apr 15, 2004, 12:58 AM

Thank you for clearing that up for me. After discussing this radio with you I have more confidence in it than I had before. I have read 2 reviews of the 7CAP, the review you posted is very well done. I liked the videos you included showing some of the programming features.

Barry

nihil · Apr 16, 2004, 12:59 PM

I ordered my 7CA last week, and now that I have rx crystals, have spent most of this morning trying to figure out why my tail (micro heli, seperate main and tail motors, p10 main esc and pixie7 tail esc) wont initialize with the 7CA, but initializes like it should with my SS4.

Ive noticed in the programming that different combinations of ON/INH and OFF/INH are used to turn certain features on and off, and I have revo set to INH since I am using a heading hold gyro (csm hlg200), the other option for revo is ON. Do I understand correctly that "INH" means "Inhibited"? and if so, how does that relate to being paired with both ON and OFF options? Is there anything else that could cause my tail not to initialize? I have not set any end points, curves, or mixes. The pixie7 initializes at "zero", and even holding the rudder stick full left or right does not initialize it. If I swap crystals and use the SS4, it initializes like it always has. Any advice?

Thanks
-H

AMCross · Apr 16, 2004, 01:58 PM

H,
"INH means inhibited, cannot be used.
"OFF" means active but its controlling switch is in the off position.
"ON" means active and the switch is on. Revo has no on/off switch so it is always off.

Check your setup in the gyro programming for your tail issues.

nihil · Apr 16, 2004, 03:12 PM

Thanks, in the excitement I completely missed the gyro menu. What do the Annn% and Nnnn% mean?

AMCross · Apr 16, 2004, 04:01 PM

"A" is AVCS or heading hold; "N" is normal mode.

Spy king · May 26, 2004, 10:46 AM

Hello!
This may seem to be in the wrong place but where can I get a radio only package in canada by friday morning?
I have a friend comming down to India so....
Thanks
Ashwin

AMCross · May 26, 2004, 10:47 AM

Spy, sorry, it is -- please visit the radio forum and see if folks might have suggestions from there.

Sincerely,
Mrs. AnnMarie Cross
Fun Manager
RCGroups.com

ShuNut · Apr 27, 2006, 10:21 PM

Hi

Is this radio still good to get for a T-Rex SE and 50 size helis ? I say still as its a few years old now.
I'm about to get my Rex and are looking at TX's.
Also does it have CCPM mixing ?

Thx

nihil · Apr 27, 2006, 10:48 PM

It should work for most any size heli. It has all the common, and some not so common swashplate types available. Though, I think if I were in the same position again, I'd get the 9c instead, the two extra channels would have come in handy on a few occasions, and the cost is not that much more.

ShuNut · Apr 28, 2006, 11:46 AM

Thx nihil

I'v been reading up on the 9C and i like very much but here in the uk its very expencive.

The 7C is £209.98 & the 9C is £379.99 which is $690.201

A very big difference ! So i think its gotta be the 7c.

So it the 7c the same now as when it was 1st made ? or has it been improved over the years ?

Thx

Apr 16, 2004, 12:59 PM	#22
nihil ^-- breaks stuff Join Date: Apr 2004 Posts: 906	beautiful timing I ordered my 7CA last week, and now that I have rx crystals, have spent most of this morning trying to figure out why my tail (micro heli, seperate main and tail motors, p10 main esc and pixie7 tail esc) wont initialize with the 7CA, but initializes like it should with my SS4. Ive noticed in the programming that different combinations of ON/INH and OFF/INH are used to turn certain features on and off, and I have revo set to INH since I am using a heading hold gyro (csm hlg200), the other option for revo is ON. Do I understand correctly that "INH" means "Inhibited"? and if so, how does that relate to being paired with both ON and OFF options? Is there anything else that could cause my tail not to initialize? I have not set any end points, curves, or mixes. The pixie7 initializes at "zero", and even holding the rudder stick full left or right does not initialize it. If I swap crystals and use the SS4, it initializes like it always has. Any advice? Thanks -H Last edited by nihil; Apr 16, 2004 at 01:19 PM.

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Apr 12, 2004, 10:02 PM	#16
AMCross Fun Manager Join Date: May 2000 Location: Villa Grove, Illinois Posts: 1,713	Happy to help, Mike! Oh, the radios will do lots, lots lots more than this.... :-) the 7c will handle rudder-to-aileron and ruddder-to-elevator coupling for you just fine. (although if you have flaperon or aileron differential in use, it may only move the one aileron servo -- which will still work just fine to fix your coupling, just might be a surprise to you!) Sincerely, Mrs. AnnMarie Cross Fun Manager RCGroups.com

Apr 14, 2004, 09:22 PM	#17
BGR Registered User Join Date: Dec 2003 Location: San Diego Posts: 862	What do you mean by the radio wont trim the second servo? Does this mean that If I use 2 servos for Aileron or Vtail that only one servo will trim?

Apr 14, 2004, 10:24 PM	#18
AMCross Fun Manager Join Date: May 2000 Location: Villa Grove, Illinois Posts: 1,713	BGR, no -- if you use a programmable mix that you set up yourself to do 2 aileron servos, or 2 rudder servos, or vtail or elevon, instead of the built in mix the trim wont work the 2nd servo. If you use the built in functions -- flaperon (including aileron differential), vtail, elevon, etc, -- then the trims work just fine. AMC

Apr 15, 2004, 12:05 AM	#19
BGR Registered User Join Date: Dec 2003 Location: San Diego Posts: 862	Thanks for the info AMCross, I have been out of the hobby for sometime and only have a Futaba PCM that uses the 512 PCM receiver. So I need a new radio and have been looking at the 7CAP. I do not want to buy a system where I will be limited too much. I have heard some negative things about the 7CAP which concerned me. These include the Trim issue I had asked you about and another concerning the timer function used in conjunction with the throttle. It has been noted that if the throttle is setup to run the timer with something other than the default timer start point of 50% throttle that the servo end point settings are erased. Are you aware of any issues with throttle/timer programming and the loss of settings?

Apr 15, 2004, 12:13 AM	#20
AMCross Fun Manager Join Date: May 2000 Location: Villa Grove, Illinois Posts: 1,713	BGR, Just to be clear, the trim/link issues aren't a bug or flaw, they're simply a feature not included in this middle-end computerized radio. Yes, I've read a bit about it. Apparently if you set up the timer function incorrectly, pressing and holding the dial during the setup, you will cause the servo's end points to go to 0 -- an obvious flaw you'd see prior to take off so not as catastrophic as it sounds -- but if set the timer normally, then this issue does not occur. I have not personally recreated this issue, and am only repeating what I have read, including a note from the distributor that a tech notice will be added to the radio's site to help users avoid this mistake. Sincerely, Mrs. AnnMarie Cross Fun Manager RCGroups.com

Apr 15, 2004, 12:58 AM	#21
BGR Registered User Join Date: Dec 2003 Location: San Diego Posts: 862	Thank you for clearing that up for me. After discussing this radio with you I have more confidence in it than I had before. I have read 2 reviews of the 7CAP, the review you posted is very well done. I liked the videos you included showing some of the programming features. Barry

Apr 16, 2004, 01:58 PM	#23
AMCross Fun Manager Join Date: May 2000 Location: Villa Grove, Illinois Posts: 1,713	H, "INH means inhibited, cannot be used. "OFF" means active but its controlling switch is in the off position. "ON" means active and the switch is on. Revo has no on/off switch so it is always off. Check your setup in the gyro programming for your tail issues.

Apr 16, 2004, 03:12 PM	#24
nihil ^-- breaks stuff Join Date: Apr 2004 Posts: 906	Thanks, in the excitement I completely missed the gyro menu. What do the Annn% and Nnnn% mean?

Apr 16, 2004, 04:01 PM	#25
AMCross Fun Manager Join Date: May 2000 Location: Villa Grove, Illinois Posts: 1,713	"A" is AVCS or heading hold; "N" is normal mode.

May 26, 2004, 10:46 AM	#26
Spy king Just "PLANE" crazy Join Date: Dec 2003 Location: Chennai, India Posts: 1,188	Hello! This may seem to be in the wrong place but where can I get a radio only package in canada by friday morning? I have a friend comming down to India so.... Thanks Ashwin

May 26, 2004, 10:47 AM	#27
AMCross Fun Manager Join Date: May 2000 Location: Villa Grove, Illinois Posts: 1,713	Spy, sorry, it is -- please visit the radio forum and see if folks might have suggestions from there. Sincerely, Mrs. AnnMarie Cross Fun Manager RCGroups.com

Apr 27, 2006, 10:21 PM	#28
ShuNut Hotep Join Date: Dec 2005 Location: UK Posts: 2,326	Hi Is this radio still good to get for a T-Rex SE and 50 size helis ? I say still as its a few years old now. I'm about to get my Rex and are looking at TX's. Also does it have CCPM mixing ? Thx

Apr 27, 2006, 10:48 PM	#29
nihil ^-- breaks stuff Join Date: Apr 2004 Posts: 906	It should work for most any size heli. It has all the common, and some not so common swashplate types available. Though, I think if I were in the same position again, I'd get the 9c instead, the two extra channels would have come in handy on a few occasions, and the cost is not that much more.

Apr 28, 2006, 11:46 AM	#30
ShuNut Hotep Join Date: Dec 2005 Location: UK Posts: 2,326	Thx nihil I'v been reading up on the 9C and i like very much but here in the uk its very expencive. The 7C is £209.98 & the 9C is £379.99 which is $690.201 A very big difference ! So i think its gotta be the 7c. So it the 7c the same now as when it was 1st made ? or has it been improved over the years ? Thx