| Title: | Welcome To The Radio Control Conference |
| Notice: | dir's in 11, who's who in 4, sales in 6, auctions 19 |
| Moderator: | VMSSG::FRIEDRICHS |
| Created: | Tue Jan 13 1987 |
| Last Modified: | Thu Jun 05 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 1706 |
| Total number of notes: | 27193 |
I was checking out a new speed controller the other night and I found it was supplying 6.85 volts to my receiver. My Futaba S-133 micro servos didn't seem to like it but older larger servos worked OK. I called the manufacture "Traxxas" and they said they regulate to between 6 and 7 volts to the rx. The tech said the receivers are spec'd for this because they are designed to run on 4 cells which could be Alkaline cells at 1.5 volts per. I don't believe him and think 6.85 volts is way to high. Anybody have an extra opinion? Bye --+-- Kay R. Fisher | ---------------O--------------- ################################################################################
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1645.1 | RANGER::REITH | Mon Dec 05 1994 16:50 | 3 | ||
A lot of people are running 5 cell nicad packs based on this very premise. I just bought a 5 cell pack to try it out. It's supposed to give you quicker servo response. | |||||
| 1645.2 | get confirmation from mfg's! | FRUST::HERMANN | Siempre Ch�vere | Tue Dec 06 1994 02:17 | 19 |
hmmm kay et al, if you look at a freshly peak charged five cell pack, the initial voltage can be around 8v. of course this drops down to the nominal 6v, but in the beginning it's still 8v. now, some manufacturers allow 5-cell operation, some don't. some rx have a onboard regulation for the electronics (not the servo connectors!), so voltage isn't an issue. the main problem are the decoupling capacitors found in the servos. the servos i looked at in the past, had cap's rated 6.3v. i do not know, how long they can withstand the 8v. think about the possibility that production can have changed, so the older servos xyz do not support 5-cell op, while new ones do.... bottom line: you must call the manufacturer and get specific information on every part. hope this helps. joe t. | |||||
| 1645.3 | Guess BEC is OK | GAAS::FISHER | BXB2-2/G08 DTN 293-5695 | Tue Dec 06 1994 11:46 | 16 |
I did some more experiments last night. Worked fine on another receiver. The receiver that caused the S-133's to go crazy was an old single conversion CIRRUS that I have been just using for setup during construction. Apparently the newer receivers must drop the voltage down a little on their own where as this old one didn't. Anyway - I'll be using this as is - thanks for the feedback. Bye --+-- Kay R. Fisher | ---------------O--------------- ################################################################################ | |||||