Redundant Radio Setup in 33%?
05-09-2003, 12:47 AM
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Redundant Radio Setup in 33%?
I would rather use a matchbox on the alierons and mix the rudder on two channels.With the rudder on two channels you match them.Each wing will have two servos on a Y which will make it hard to match without a matchbox.I recently built a AW 33% Extra and used Hitec programmable servos with the programmer,it worked awesome.I have 8411's in all my other 35% planes so was skeptical about the Hitec'sbut so far it's been fine.Here is a pic of the floating bellcrank system I started using on all my large planes,it eliminates the need for matching the rudder servos and works great.
05-09-2003, 01:28 AM
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Redundant Radio Setup in 33%?
I also have this book.It is a good book but I found some the info alittle out dated,but in general it is a good book.Give Don a call at dons hobby shop.The address is www.donshobbyshop.com
He is a super nice guy and loves talking airplanes.
Mike
He is a super nice guy and loves talking airplanes.
Mike
05-09-2003, 01:32 AM
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Redundant Radio Setup in 33%?
Last pic,I promise!BTW I like the servo arms from SWB they fit very tight and sit lower on the servo.Check them out at www.swbmfg.com
Mike
Mike
05-09-2003, 11:48 AM
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Redundant Radio Setup in 33%?
calebdevries, Per JR and Futaba, the receivers are capable of handling the number of ports that it was designed with. A 9 channel receiver can easily handle 9 digital servos, If you exceed it by say one or two, not a big deal. However, if you are using 14 servos and a 9 channel receiver, you might want to add a second receiver. The second receiver will share the load of the servos by putting 7 on each receiver rather than 14 on one, and give you some redundancy if one receiver, crystal, etc, decides to go belly up.
lv2rcav8, I agree with you on Dons book. Somewhat dated, and not in-depth. He tends to say I use 'this', but never really mentions the other alternatives, why he uses it over others, etc. After reading it I felt like I was told to do things a specific way, without the background info surrounding the decisions.
For example, with regard to dual receivers it mentions the use of dual receivers, crossing the controls across both receivers, and keeping the antennas separate. No mention of load sharing, how to balance that load, nothing on the disadvantages, routing power with redundancy to the receivers, fusible links, etc. Basically, only 1/3rd of the story on the use of dual receivers. Most of the book is similar.
lv2rcav8, I agree with you on Dons book. Somewhat dated, and not in-depth. He tends to say I use 'this', but never really mentions the other alternatives, why he uses it over others, etc. After reading it I felt like I was told to do things a specific way, without the background info surrounding the decisions.
For example, with regard to dual receivers it mentions the use of dual receivers, crossing the controls across both receivers, and keeping the antennas separate. No mention of load sharing, how to balance that load, nothing on the disadvantages, routing power with redundancy to the receivers, fusible links, etc. Basically, only 1/3rd of the story on the use of dual receivers. Most of the book is similar.
05-27-2003, 06:02 AM
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Redundant Radio Setup in 33%?
Many years ago, Custom Electronics manufactured a Transmitter T. This is a twin transmitter module receptacle that holds two transmitter modules. The modlues must operate on different bandwidth e.g. 72 and 50 mhz. Therefore, two different frequencies are transmitted at the same time. Two receivers in matching frequencies/bandwidths are installed in the model as per in earlier discussions.
Thus, this is the real redundant sytem. It is the 'Fail Safe" system.
Unfortunately, Custom electronics dont make this gem of redundant system anymore.
I feel a lot safer in my 33% warbird.
I would love to hear any proposal to revive the "Transmitter T"
Thus, this is the real redundant sytem. It is the 'Fail Safe" system.
Unfortunately, Custom electronics dont make this gem of redundant system anymore.
I feel a lot safer in my 33% warbird.
I would love to hear any proposal to revive the "Transmitter T"
