[NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC

Derek Koopowitz derekkoopowitz at gmail.com
Fri Mar 16 14:37:26 AKDT 2012 

Robert,

On the 18mz, have you tried playing with the BOOST setting for the throttle
function?  In looking at the manual there are two settings for boost -
small and large.  What is default?  Is it small?  Perhaps change it to
large and see what happens?  Whatever the setting is - try the opposite
value.  Since a lot of the RX functionality is programmed through the
radio, perhaps this setting replaces the manual way of changing the mode in
the other RXs from high speed to normal.

-Derek

On Fri, Mar 16, 2012 at 2:29 PM, Robert Green <robcase1 at cox.net> wrote:

> ** **
>
> the 7008 does not have a high speed mode****
>
> ** **
>  ------------------------------
>
> *From:* nsrca-discussion-bounces at lists.nsrca.org [mailto:
> nsrca-discussion-bounces at lists.nsrca.org] *On Behalf Of *James Oddino
> *Sent:* Friday, March 16, 2012 4:26 PM
> *To:* **General pattern discussion**
> *Subject:* Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC****
>
> ** **
>
> Derek, Earl, John,****
>
> ** **
>
> We're getting close to understanding the system but not understanding the
> cause of the original problem.  Sounds like the Spin ESCs do work in high
> speed and it is not an amplitude problem.  I just looked at the 18MZ manual
> and I see no mention of high speed for that receiver.  Earl has to figure
> out if it does have a high speed mode.  If it doesn't, then John is correct
> that it does seem like the wrong direction.  Someone will eventually figure
> out what the rep rate is on the S.Bus but it would be so much easier if
> Futaba would tell us what the interface specs are.****
>
> ** **
>
> Jim O****
>
> ** **
>
> ** **
>
> On Mar 16, 2012, at 2:06 PM, Derek Koopowitz wrote:****
>
>
>
> ****
>
> Jim,****
>
> ** **
>
> My Jeti SPIN worked fine running on the HS channel - only the programming
> box wouldn't work when plugging into CH6.  When I changed it to "normal"
> mode it worked just fine.****
>
> ** **
>
> -Derek****
>
> On Fri, Mar 16, 2012 at 1:57 PM, James Oddino <joddino at socal.rr.com>
> wrote:****
>
> I know the Jeti Box does not measure the pulse width on the high speed
> channels and I would guess the ESC wouldn't work either.  I run my throttle
> (Spin 99 ESC) on channel 7 and I suspect that was because it didn't work on
> high speed but I truly can't remember if I actually tried it on a HS
> channel.  I told you I was getting old.  Does the 18MZ receiver have any
> low rep rate channels?****
>
> ** **
>
> Jim O****
>
> ** **
>
> ** **
>
> On Mar 16, 2012, at 1:31 PM, ehaury wrote:****
>
>
>
> ****
>
> Jon****
>
>  ****
>
> Possibly, as Derek mentioned - setting the RX from HS to standard is worth
> trying.****
>
>  ****
>
> Earl****
>
>  ----- Original Message ----- ****
>
> *From:* Jon Lowe <jonlowe at aol.com> ****
>
> *To:* nsrca-discussion at lists.nsrca.org ****
>
> *Sent:* Friday, March 16, 2012 3:29 PM****
>
> *Subject:* Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC****
>
> ** **
>
> Can average volts cause problems like Robert is seeing?  Could the speed
> control be looking for both a voltage peak and duration?****
>
> Jon****
>
> ** **
>
> -----Original Message-----
> From: ehaury <ejhaury at comcast.net>
> To: **General pattern discussion** <nsrca-discussion at lists.nsrca.org>
> Sent: Fri, Mar 16, 2012 3:24 pm
> Subject: Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC****
>
> Well, Jim caught me. So much for quick & dirty! ****
>
>  ****
>
> I made the servo signal measurements using a high impedance meter with a
> scope mode. It displays a voltage at the top of the scope screen, as well
> as a freq. Without thinking, that voltage is the number I reported, and
> it's 50% different between the RX's because one was operating at 2X the
> freq of the other, but it's not pulse amplitude but average volts. ****
>
>  ****
>
> I took another look and the actual pulse amplitude is the same for both,
> and is 3v as Jim observed. Pretty obvious upon thinking about it. So -
> Futaba didn't change anything and Robert's problem isn't with pulse
> amplitude. ****
>
>  ****
>
> Jim, thanks for questioning me - sorry for the confusion. ****
>
>  ****
>
> Earl****
>
>  ****
>
>  ----- Original Message ----- ****
>
> *From:* James Oddino <joddino at socal.rr.com> ****
>
> *To:* General pattern discussion <nsrca-discussion at lists.nsrca.org> ****
>
> *Sent:* Friday, March 16, 2012 1:55 PM****
>
> *Subject:* Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC****
>
> ** **
>
> Earl, something doesn't look right.  How did you measure the pulse
> amplitude?  Did you have a servo connected?  I measure 3.0 volts peak
> unloaded on a 6108SB. ****
>
> ** **
>
> Jim O****
>
> ** **
>
> ** **
>
> On Mar 16, 2012, at 8:18 AM, ehaury wrote:****
>
>
>
> ****
>
> I compared the servo pulse amplitude of the 6008HS (0.64v) and the 7008SB
> (0.32v) RXs. That's a significant difference, while Futaba servos are
> designed to work at that level, other stuff isn't. That's likely the issue
> with your ESC. ****
>
>  ****
>
> Earl****
>
>  ----- Original Message ----- ****
>
> *From:* Robert Green <robcase1 at cox.net> ****
>
> *To:* 'General pattern discussion' <nsrca-discussion at lists.nsrca.org> ****
>
> *Sent:* Friday, March 16, 2012 8:44 AM****
>
> *Subject:* Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC****
>
> ** **
>
> Thanks Earl i was told that someone else in **Europe** was experiencing
> similar problems with theirs as well.  Hope they can get it resloved.****
>   ------------------------------
>
> *From:* nsrca-discussion-bounces at lists.nsrca.org [
> mailto:nsrca-discussion-bounces at lists.nsrca.org<nsrca-discussion-bounces at lists.nsrca.org?>]
> *On Behalf Of *ehaury
> *Sent:* Friday, March 16, 2012 8:27 AM
> *To:* **General pattern discussion**
> *Subject:* Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC****
>
> Suggest you give Futaba service / Steve Kaluf a call. It may be that the
> RX pulse rise is a little low for the ESC. Futaba have, in the past at
> least, used a lower pulse amplitude than some others which resulted in
> strange results when mixing servos on occasion. If this is the case, the
> problem is more compatibility with the ESC than RX defect, still annoying
> though.****
>
> Earl****
>
>  ----- Original Message ----- ****
>
> *From:* Robert Green <robcase1 at cox.net> ****
>
> *To:* 'General pattern discussion' <nsrca-discussion at lists.nsrca.org> ****
>
> *Sent:* Friday, March 16, 2012 7:42 AM****
>
> *Subject:* Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC****
>
> Ed, I don't like it either I mat try a ferrite ring, as I like the
> telemetry feature on the tx from the rx.  Anyone else using the 18MZ
> receiver seeing any issues with the motor cutting out?****
>   ------------------------------
>
> *From:* nsrca-discussion-bounces at lists.nsrca.org [
> mailto:nsrca-discussion-bounces at lists.nsrca.org<nsrca-discussion-bounces at lists.nsrca.org?>]
> *On Behalf Of *Ed White
> *Sent:* Friday, March 16, 2012 6:56 AM
> *To:* **General pattern discussion**
> *Subject:* Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC****
>
> Robert,
>
> The only way I can think of that this is a receiver problem is that motor
> or ESC noise is being picked up on the ESC lines (any or all) and the 8
> channel Rx is somehow more tolerant of the noise or better able to filter
> it than the other Rx.  I would be uncomfortable at leaving this at - I have
> to use my old receiver.
>
> Ed****
>   ------------------------------
>
> *From:* Ronald Van Putte <vanputte at cox.net>
> *To:* **General pattern discussion** <nsrca-discussion at lists.nsrca.org>
> *Sent:* Thu, March 15, 2012 10:14:28 PM
> *Subject:* Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC
>
> Wait a minute. "The problem was with the receiver." doesn't quite cut it.
>  What was the problem?  ****
>
> I'm glad you got the problem "solved", but you can't trust that receiver
> until you identify the problem.  BTW, "I don't know" is a perfectly valid
> answer, but you could save somebody else a lot of grief if you know what
> was wrong with the receiver.****
>
> Ron****
>
> On Mar 15, 2012, at 8:26 PM, Robert Green wrote:****
>
> Well I think I found the issue with the Jeti and the Plettenberg.  The
> problem was with the receiver.  I recently got a new radio, and installed
> the new rx in the plane, and then the issue started showing up.  I even
> went and borrowed a Jeti99Spin, to see if this would resolve the issue, but
> it did not, so I started to think of everything that I had changed, and
> decided to go back to my 8 channel receiver and voila, everything is back
> to normal.  Thanks to everyone for there input.  Feels good to have the
> problem behind me****
>   ------------------------------
>
> *From:* nsrca-discussion-bounces at lists.nsrca.org [
> mailto:nsrca-discussion-bounces at lists.nsrca.org<nsrca-discussion-bounces at lists.nsrca.org?>]
> *On Behalf Of *Robert Campbell
> *Sent:* Thursday, March 15, 2012 8:38 AM
> *To:* **General pattern discussion**
> *Subject:* Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC****
>
> My suggestion to limit throttle isn't to limit current draw.  It's to
> limit the motor RPM's so the ESC can remain synchronized with the motor.
> If the motor turns faster than the ESC can handle, the motor will begin
> screeching.  I've only seen this on outrunners, never inrunners.****
>
> Rob****
>
>  ----- Original Message ----- ****
>
> *From:* Bob Richards <bob at toprudder.com> ****
>
> *To:* General pattern discussion <nsrca-discussion at lists.nsrca.org> ****
>
> *Sent:* Thursday, March 15, 2012 7:55 AM****
>
> *Subject:* Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC****
>
> That was my thought. I don't understand why one would want to limit the
> throttle to something less than full. Why not install a prop that loads the
> motor less?****
>
> Bob R.****
>
>
>
> --- On *Thu, 3/15/12, Peter Vogel <vogel.peter at gmail.com>* wrote:****
>
>
> From: Peter Vogel <vogel.peter at gmail.com>
> Subject: Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC
> To: " **General pattern discussion** " <nsrca-discussion at lists.nsrca.org>
> Cc: "General patterndiscussion" <nsrca-discussion at lists.nsrca.org>
> Date: Thursday, March 15, 2012, 12:15 AM****
>
> Limiting throttle does NOT limit current to the motor, in fact, it can
> cause higher current draw.  All throttle does is vary the on vs off cycle
> during which voltage is sent to the motor. ****
>
> Peter+
>
> Sent from my iPhone4S****
>
>
> On Mar 14, 2012, at 7:29 PM, "Robert Green" <robcase1 at cox.net<http://us.mc1616.mail.yahoo.com/mc/compose?to=robcase1@cox.net>>
> wrote:****
>
>   Hi Rob, the Static amps on the ground is 81 amps.  My throttle is
> limited to 85 percent.  Even changed out the speed controller and the same
> thing happened.   Really wish i knew what was going on?****
>    ------------------------------
>
> *From:* nsrca-discussion-bounces at lists.nsrca.org<http://us.mc1616.mail.yahoo.com/mc/compose?to=nsrca-discussion-bounces@lists.nsrca.org>[
> mailto:nsrca-discussion-bounces at lists.nsrca.org<nsrca-discussion-bounces at lists.nsrca.org?>]
> *On Behalf Of *Robert Campbell
> *Sent:* Wednesday, March 14, 2012 9:18 PM
> *To:* **General pattern discussion**
> *Subject:* Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC****
>
>   Robert,****
>
> Which Jeti are you running?  Advance or Spin?  Just a guess, but all the
> outrunners I've run require low timing advance and some require fixed end
> points and the throttle to be limited to 70 percent or so.  Also, have your
> checked your set-up on a watt meter?  Sometimes our set-ups pull more
> current than we were expecting and the ESC over current protection kicks in.
> ****
>
> Hope this helps.****
>
> Rob****
>
>  ----- Original Message ----- ****
>
> *From:* Robert Green<http://us.mc1616.mail.yahoo.com/mc/compose?to=robcase1@cox.net>
> ****
>
> *To:* 'General pattern discussion'<http://us.mc1616.mail.yahoo.com/mc/compose?to=nsrca-discussion@lists.nsrca.org>
> ****
>
> *Sent:* Wednesday, March 14, 2012 8:19 PM****
>
> *Subject:* [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC****
>
> Is anyone out there running this combo.  Went flying today, and had some
> issue with the speed controller cutting out when i was setting up for my
> approach into the pattern.  I was pulling up and advanced the throttle to
> do an reverse cuban eight to get into my pattern, when the motor suddenly
> quit.  I pulled the throttle back and advanced it once again and the motor
> came back it did this on every flight except the first flight where i had
> no issues whatsoever.  my setting are high timing for the motor, low cut
> off voltage, acceleration high, ****
>
>   ****
>
>   ****
>
> thnaks in advance ****
>  ------------------------------
>
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