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XHELI.COM . Autography FlightPower . Advantage Hobby

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e-Mikado Logo 400 500 600 > Schulze 18.46k wont spool up now with 6s?
 
 
ReadyHeli
rrAdvertiser
Location: Jupiter, FL

Hi guys,

Went to plug my new high voltage pack today (after a test run last night with 8 cell -- all was fine) and realized it wont spool up. Nothing has changed in my setup except pack. Have I burnt something up? I still get the orginal "on" beep and then the "roger" (one beep -- throttle is in correction position) I've tried reversing and get the "two beeps" telling me it's not at low stick. WHATS GOING ON!!!

John @ Readyheli
04-10-2004 Over year old.
 
 
ReadyHeli
rrAdvertiser
Location: Jupiter, FL

Also I want to mention, I'm using a UBEC as this esc doesn't have a BEC. All servos operate correctly.


Thanks for any input guys

John @ Readyheli
04-10-2004 Over year old.
 
 
ReadyHeli
rrAdvertiser
Location: Jupiter, FL

Also want to add that the esc is rated for 18 cells.

John @ Readyheli
04-10-2004 Over year old.
 
 
raytor
Senior Heliman
Location: Southern US

18 x 1.2v = 21.6 v (ESC rating)
6 x 4.0v = 24 v (fully charged Lipo)

Overvoltage?

Drain lipos a bit and see if it starts - if so - Yes!
04-11-2004 Over year old.
HOMEPAGE  
 
 
Crasher
Senior Heliman
Location: Gone on that

Is 1.2v the full charge on nicad/nimh? if so I guess the esc is burnt because I tried the 8 cell (which worked previously) and nada.
04-11-2004 Over year old.
 
 
raytor
Senior Heliman
Location: Southern US

I would be surprised if less than 3v over would blow the ESC but it could be enough to trigger the overvolt sensor - the ESC should recover though.
04-11-2004 Over year old.
HOMEPAGE  
 
 
JKos
Elite Veteran
Location: City of California in the state of Maryland

A fully charged 18-cell pack is well over 1.2 V per cell or 21.6 V total. Also, a fully charged LiPo is 4.2 V per cell so that is 6 x 4.2 or 25.2 V.

25.2 V would equate to 1.4 V per cell on an 18-cell. Sounds reasonable to me that the true max voltage for the 18.46k should be more than 25 V. It would be interesting to get the true number form Schulze to answer that question.

I was tempted to try 6S with my 18.46k but never did so I can't help there.

Good luck,
John
04-14-2004 Over year old.
 
 
Crasher
Senior Heliman
Location: Gone on that

We spooled the Eolo up one night with the 8 cell, spooled up fine, set it on bench and charged 6S. The next day plug in 6S, get the little "roger" beep and second one that lets you know it instalized and not @ full stick and then nothing as we advanced throttle.....


Weird stuff?
04-14-2004 Over year old.
 
 
JKos
Elite Veteran
Location: City of California in the state of Maryland

I had sent an e-mail to Schulze asking this very question a few months ago and it was never answered. I just sent another one. We'll see.

- John
04-14-2004 Over year old.
 
 
ReadyHeli
rrAdvertiser
Location: Jupiter, FL

let us know.

in the meantime, boycott schulze.

damn nazis.



John @ Readyheli
04-14-2004 Over year old.
 
 
Crasher
Senior Heliman
Location: Gone on that

Probably charge me for repairs on the controller while they're at it
04-14-2004 Over year old.
 
 
JKos
Elite Veteran
Location: City of California in the state of Maryland

A CC PH-60 would work great in the mean time. Rated for 20 cells so 25.2 V should be no problem at all.

- John
04-14-2004 Over year old.
 
 
Crasher
Senior Heliman
Location: Gone on that

OK Paypal me $120 and I'll order that up for him! thanks a lot JKos
04-14-2004 Over year old.
 
 
ReadyHeli
rrAdvertiser
Location: Jupiter, FL

i can get a cc80 for 108 bucks.

120?

ur smoking crack.

John @ Readyheli
04-14-2004 Over year old.
 
 
JKos
Elite Veteran
Location: City of California in the state of Maryland

I got the answer from Schulze... The true max spec'd voltage for the 18.46k is 26 V. There you go... So, the 18.46k should, in fact, be able to handle 6S LiPos.

So, I wonder what's going on here.

- John
04-16-2004 Over year old.
 
 
ReadyHeli
rrAdvertiser
Location: Jupiter, FL

ur right. it should have been able to take the load.

unbelievable.

jg

John @ Readyheli
04-16-2004 Over year old.
 
 
raytor
Senior Heliman
Location: Southern US

Fully charge your 6S lipos and then put a voltmeter on it with no load. Let us know what you read.
04-16-2004 Over year old.
HOMEPAGE  
 
 
ReadyHeli
rrAdvertiser
Location: Jupiter, FL

25.3 volts DC

John @ Readyheli
04-16-2004 Over year old.
 
 
JKos
Elite Veteran
Location: City of California in the state of Maryland

I asked for further input with respect to 6S on this ESC. The answer was that tolerances of the components put it on the edge at 26 V. Basically, 6S is very much pushing the design limits of the 18.46k.

- John
04-16-2004 Over year old.
 
 
Crasher
Senior Heliman
Location: Gone on that

Sounds like they should've underrated it. Johns(JG_HELI) now using a P45 which is rated for 16 cells without bec with great success. I believe Jeremy @rchover.com has been doing this also.


The german coding seems better (soft start, ect) but the components suck!
04-16-2004 Over year old.
 
 
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e-Mikado Logo 400 500 600 > Schulze 18.46k wont spool up now with 6s?
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