[RCSE] bad chatter problem fulll scale

2005-08-10 Thread Jeff Carr
I have to ask why someone would deploy SAlots and Flaps above 2'. I have yet to fly a plane that will let you. Spoilers and speed brakes have no Altitude limit and on some planes the speed brakes are only used in an Emergency decent. My guess is that the pilot did use the spoilers and it

[RCSE] bad chatter problem

2005-08-08 Thread Douglas, Brent
Ok, I'm trying to help a friend diagnose and hopefully resolve a chatter problem... It's a standard GL, and it gets big chatter, full throw up and down, in different orientations. Only suspicious thing is that he used metal pushrods instead of the 1/4 inch balsa setup standard to the GL. We

Re: [RCSE] bad chatter problem

2005-08-08 Thread Bill Conkling
It may be a case of the transmitter 'swamping' the rec If the TX is too close, it can over excite the rec front end. I suspect that this may be exagerated with the 5cell battery. Can he try a 4 cell instead? Why the 5 cell? If he is trying to get weight, use 4 bigger cells, or carry some

Re: [RCSE] bad chatter problem

2005-08-08 Thread Ben Diss
I agree. I sounds like a bad crystal. I've used 555's on 5 cells many times and I've never seen this happen. I have lots of planes with metal pushrods without a problem too. I've only seen this using FMA receivers where there's lots of carbon in the plane. In those cases I swap the

[RCSE] bad chatter problem fulll scale

2005-08-08 Thread JIM EALY
Guys I know that several guys on this list a full scale jet jocks.so Yesterday descending from 35K - the pilot did not deploy the spoilers, but rather extended the LE slot and the flaps were 20+ degrees with a healthy nose down attitude. At that time a very loud medium freq vibration started.

Re: [RCSE] bad chatter problem

2005-08-08 Thread Doug McLaren
I don't know about the HS81s specifically, but some servos don't like 6 volt battery packs, and chatter is the symptom, at least until the voltage drops a bit. (A 5 cell NiCd pack puts out about 7 volts at first.) http://www.hobbico.com/faq/product-faq.html#q109

Re: [RCSE] bad chatter problem

2005-08-08 Thread lomcovak
You might also consider the ambient testing environment, local appliances, flourescent lighting etc can cause similar chatter... Quoting Doug McLaren [EMAIL PROTECTED]: I don't know about the HS81s specifically, but some servos don't like 6 volt battery packs, and chatter is the symptom, at

Re: [RCSE] bad chatter problem

2005-08-08 Thread Dan
You've got a short in the antenna wire near the receiver. Dan "Douglas, Brent" [EMAIL PROTECTED] wrote: Ok, I'm trying to help a friend diagnose and hopefully resolve a chatterproblem... It's a standard GL, and it gets big chatter, full throw upand down, in different orientations. Only suspicious