[NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC
John Gayer
jgghome at comcast.net
Fri Mar 16 13:28:27 AKDT 2012
Looking forward to hearing the results
On 3/16/2012 3:06 PM, ehaury wrote:
> John / Jim
> The 6008HS can be be set to "HS" or "std". I assume that the 7008 can
> be also - but out of the box mine appears to be "reg". I'm using the
> original Jeti/Hacker 90 Comp ESC's and they work fine on a HS channel.
> I haven't tried them with the 7008 RX yet - this discussion has moved
> my interest in the 7008 up in priority though and I'll try it soon.
> Jim - understand the old part, not ancient like RVP - old none the
> less, but way better than the alternative.
> Earl
>
> ----- Original Message -----
> *From:* John Gayer <mailto:jgghome at comcast.net>
> *To:* General pattern discussion
> <mailto:nsrca-discussion at lists.nsrca.org>
> *Sent:* Friday, March 16, 2012 3:49 PM
> *Subject:* Re: [NSRCA-discussion] Plettenberg 30-10 evo and Jeti ESC
>
> Earl,
> Your numbers imply that the frame rate of the 7008SB is 1/2 the
> frame rate of the 6008HS for discrete channels. That doesn't seem
> like the right direction for Futaba to be steering. Or is just
> that on a SB system the discrete channels are an afterthought?
> John
>
> On 3/16/2012 2:23 PM, ehaury wrote:
>> 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 <mailto:joddino at socal.rr.com>
>> *To:* General pattern discussion
>> <mailto: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 <mailto:robcase1 at cox.net>
>>> *To:* 'General pattern discussion'
>>> <mailto: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>
>>> [mailto: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
>>>
>>
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