DX7 + AR7100R + Switchglow

[flymustangs]

It looks like the trip point on these is not real consistent. Maybe that's why their website says "Open up your radio's ATV settings as wide as possible to prevent SwitchGlo from triggering prematurely." It also looks like there is very little if any hysteresis based on people saying it goes on and off at a particular channel position. On mine, it turns on when above the -50% position. What I mean by that is if the servo monitor is moving from left to right it will turn on when it goes past the tick mark to the left of center. On the X9303 there are three tick marks to each side of center for 150% of travel to each side. Hope that makes sense. So in my case a "0" position on the gear channel could turn the rev limiter off and the switchglo on.

Ken

[Pinecone]

ARRRRGGGGHHHH.

I just realized that I have my XP9303 (carry to fly Phoenix) with me to check the mix I was playing with. Then I realize I was messing with it trying to get it to buddy box with my X9303.

And guess what?

In copied models over, I managed to overwrite my mix. So I have to start over.

BTW I don't remember if my turns on with + or -, just that it turns on when the monitor moves about 1/4 the way from the left.

[LoveMyTrex]

If I wanted to ignore all the mixes, and have the glow on and limit off with the gear switch down, and glow off and limit on with the switch up,while not being bound to the F mode switch at all. can I do that?

is it possible to have the limit of and the glow on at the same time without using complicated mixes?

[Pinecone]

The SG page has how to enable it with a Y cable on a 7 ch Rx.

But I want mixes to prevent hot starts. Properly set up, the SG will NOT power the glow plug unless the throttle is at or near idle.

[Costas]

Hi guys - Just stumbled on this great thread on the SwitchGlo/AR7100R setup.

I performed a review on the Switchglo unit back in Jan on arcHeli (Aussie-DownUnder Heli forum).

If anyone is interested in the read.. here is the link: http://www.archeli.com.au/cobra/show...ight=switchglo

[Pinecone]

Nice thread, but still no JR mix to prevent a hot start.

[Costas]

Originally Posted by Pinecone

Nice thread, but still no JR mix to prevent a hot start.

True - As I utilise a JR10X, it is quite easy to setup two free mixes to perform this function - A bit trickier on the DX7 by the looks of it (if you don't have a spare channel).

[Pinecone]

What is your mix on a 10X?

I am trying to do it on a 9303 and having some issues. On the 9303 it seems I can only map the Aux3 and 4 to the Aux 2 switch (3 position). The slider doesn't make sense.

But if I do a simple multi point mix, it works for positions 0 and 1 of the switch, but Position 2 will always activate the SG, no matter the throttle position. I was using Mix 1, and maybe Mix 2 will work. I will have to play with that.

[Costas]

OK - Here is how I do it on my JR 10X... A bit long winded sorry...(and I actually noticed that I use 2 mixes, one standard mix and one multipoint mix for it to all work correctly).

I currently use AUX3 to control the Switchglo as it is a free convenient toggle switch/channel on my Tx so the example below uses Aux3 but any other free channel could be utilised of course.



Set Travel ADJ and Subtrim as follows:

Note: Reverse AUX3 Channel Sense

TADJ AUX3 ±100%
Subtrim AUX3 +250% (Equal to +125% on a 9303 as I think that's max Subtrim for a 9303)

This Subtrim value offsets neutral so it is much closer to where the Switchglow’s trip point is set at by the manufacturer.

Note that TADJ and Subtrim values may need to be altered between different Switchglow units to ensure that they switch on/off correctly as I have found that the on/off trip point varies slightly between units but you can just fine tune this right at the end of setting up the mixes. I have not found this to be a requirement for the units I have tested though.



Set a Standard programmable mix as follows:

This Mix allows the Throttle stick to mix into AUX3 with an offset which is near the Switchglow’s On/Off trip point.

Ch: Thro (CH1) > AUX3
Mix Type: Norm
Offset: -85
Mix +Gain +100
Mix -Gain -100
Mix Active for All Flight Modes



Set a Multipoint programmable mix as follows:

This Mix sets the Throttle Stick position where the Switchglow stops operating at to prevent any form of Hot Start in any Flight Mode etc.

Ch: Thro (CH1) > AUX3
Mix Type: Norm
Mix Active: All Flight Modes

On the actual mix curve I typically set Point 1 at around the 30% position across the bottom of the curve (Pic below shows it at about 50% but it is actually around 30% on the Tx ie Point 1 is much closer to Point L than what is shown in the pic below - Blame MS Excel for that !).

Stick travel mix amount (Throttle at idle position and trim set to 3/4 up) is approx. +70% output. This will vary depending on the actual Switchglow unit utilised as their trip points are all slightly different.

You can fine tune Point 1 < +70 > to suit the actual spot where the Switchglo switches On/Off. You may or may not need to readjust the subtrim or Tadj values for Aux3, I normally find that I don't need to change those as the Point 1 on the curve usually allows for ample adjustment leeway.

Here is a rough pic of my multipoint curve in the Mix - Note that the Switchglo actually trips before you reach Point 1 ie the slope of the curve is what really affects where the Switchglo will trip.




So to start my model - My AUX3 switch must be thrown and my throttle position MUST BE below fast idle for it to work. If at any time the throttle is at fast idle (throttle trim full fwd) or higher, then the Switchglo will not function even if the AUX3 switch is still thrown. Once my model starts, I then flick the Aux3 switch off so the Switchglo will never activate throughout my flight at a low throttle setting (eg during an auto etc)

If the AUX3 is not thrown, then the Switchglo is fully off and will not function at all, irrespective of flight modes or throttle position.


Hope this helps !

Costas

Mode2 Heli Pilot - DownUnder

[Pinecone]

THANKS. This is similar to what I ended up, from what I can remember of it.

With the MultiPoint mix, did you set points 2 - H at +100, or just the H point? (9303 has 7 oint curves).

[Costas]

The original preset points L and H are set to -100 and +100 respectively as per the diagram.

Point 1 is the only additional point I used. Set this at around 30% from point L across the bottom axis (ie around 30% stick travel) and then set it to a value of approx +75.

I am not familiar with the curve options on the 9303 but on the 10X you can set point 1 pretty much anywhere between points L and H - I assume the 9303 is similar.

You can then just vary the +75 value to suit the Switchglo's trip point so that it will switch on/off at the desired throttle point. As you vary this value the slope of the line between points L and 1 it will alter the point at where the Switchglo activates etc.

I don't set point 1 at exactly where the Switchglo activates as I find that the Switchglo does not cleanly switch on/off at a given point so I set point 1 to the right of where I want the Swichglo to operate so the Switchglo's operating point falls between point L & 1 in the upper section of the curve just somewhere close, but TO THE LEFT of point 1... if that makes sense !!

If you set it up as above and have a play with it you will see what I mean.

[Pinecone]

Thanks.

The 9303 curves are based on equally space, 7 points. So you have L, then 2 points, and mid, then two points and high. So 30% is about point 2.

[Costas]

OK - In that case as you state - Just use points L, 2 and H - It should work just fine...!

[Danal Estes]

Since this post moved to the Tech Room, I can no longer edit the original posts. Someone pointed out an error, namely, in the "Radio Setup" post, last mixer, says:

• [PROG.MIX3]
• GEAR->GEAR
• RATE: +5 (Mix2 stays active; so this is how much RPM to add to Mix2 position; 80+5=85%)
• 0% (Always, Mix2 still active in FM 2)
• SW:F-NR
• OFFSET: 0

It should say:

• [PROG.MIX3]
• GEAR->GEAR
• RATE: +5 (Mix2 stays active; so this is how much RPM to add to Mix2 position; 80+5=85%)
• 0% (Always, Mix2 still active in FM 2)
• SW:F-S2
• OFFSET: 0

[Finless]

I edited the original post for you Danal.

Bob

[Gernejr]

Hi Danal, i read every theard on HF and yours to many time. LOL. I'm trying to setup the mixer for hot starts. Here's my setup .Trex 600N pro, DX7/ AR7000 rx Airzona Reg., GY611/9256 and Switchglo. Y cable on gain channel.
Input Select
AUX2 =F MOD
Gear = Gear
Throttle Hold on AUX2
GY 611 is set for 3 rpm setting.
Throttle cut is on the throttle trim ( which i like)
Gear is in Reverse
AUX2 is in Normal

My GY611 is all setup in the GY611 not in the radio. If i have to change to a radio setup thats ok i'm just new to the 611 and used Finless video.
I try to setup the mix 1 as your theard
NEW - DX7 + AR7100R + Switchglow show but that changed my Gyro gains. and the SG was ON/OFF by gear switch up to 39% throttle i can't get throttle stick lower than 39%and still work.
Right now i have mixs INH and my gains on the 611 are 32% HH on O(up) and 31%HH on 1(down)
I wish i understood the mixer better but this is new to me.
At one time i had SG working in normal mode off in both Idle1and 2 and would turn ON if i hit Aux2 switch for heli hold but my gain % were crazy (changing as i moved throttle stick up/down.) those setting in Program Mix 1 were.
Thro-Gear
Rate: +125%
+25%
SW:F-NR
Offset: - 125%

I like to keep my swtiches set where they are because i have a Trex 450 (401) and T500 (770) set the same
But gains are controlled by radio settings.
Gear -gains
AUX2- Heli hold
rudd D/R & Expo use on both electric not on Trex 600n.

Danal i'm in no rush if you could help me it would be great. I'm sure i have forgot to tell you something please ask away.

[Danal Estes]

Glenn,

The mixers to make SG and the RPM limiter work on the same channel depend on the RPM limiter setting the same RPM with either a positive or negative number. That is, -88 and +88 would both set the RPM the same, and the - inhibits the SG and the + turns it on.

Since the Gyro is different with - and + (rate v HH), unless I'm missing something, the gyro and the SG really can't live on the same channel and use these mixers. The setup would have to be completely different.

================================================== ==

As far as avoiding hot starts when running SG and Gyro on the same channel, 401s MUST power up in HH (is the 611 this way?) and the HH gain range tends to turn on the SG. Gyros like the 770 (which don't care) might be ok. For a "universal" (any Gyro) mixer, It would take a mixer that:

1) Powered everything up with enough + to ensure the gyro was in HH, but not enough to light the SG. (knowing that this is to little gain for the gyro to fly - ok for power up pre start)

2) Allowed a switch to be thrown to light the SG for start (knowing that this would put way too much gain on the gyro - ok for start).

3) Allowed a switch (another switch?) to be thrown that puts the gyro at proper gain.

4) All of 1-2-3 need to be true while avoiding hot starts somehow (either FM in Normal and/or Hold on, and/or Throttle down).

I think this can be done... let me think about it.

[Gernejr]

Danal right now i have head hold in both sides of gear channel

" i have mixs INH and my gains on the 611 are +32% HH on O(up) and +31%HH on 1(down)

I think when i get back home Friday i will copy a new setup in my DX7 and setup the gyro in the radio instead of on the GY611. That might let me will with mixers and not mess with the gyro gains. I was very close befroe but moving the throttle stick would change gyro gains from +32% to has hi as +51%.

I have SG working now but can be turned on in any Fmode . Thanks Danal

[Big E]

ping

[squirrel4207]

what is switch glow, what does it do and what is it for