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Getting new jeti ds-24

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Getting new jeti ds-24

Old 07-20-2023, 05:15 AM
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model1258
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Default Getting new jeti ds-24

I am getting a new Jeti DS-24 Radio, I Have got 2 other Jets I fly on a Spectrum DX-18, for last ten years mostly at local field and have never had any trouble.So I have got a new Carf Rebel 2m on the way. So My question is What would be What would be the best options for receiver and batteries etc. in the new plane? I have been reading a lot and watching Harry videos. So if I knew what other equipment people use and works great I could order what I need and start figuring it out? I have read several Threads on 2m and Rebel Pro sites and have seen a few different ways of setting up with Rex 12 and Central Box so some real world help would guide me in right direction.
Old 07-20-2023, 07:16 AM
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jvaliensi
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Hi,
Good choice.
I wouldn't use a REX12 with a Central Box. I'm not sure where you are at in the world. But if you are in North America, A CB220 w/ (2) REX7 A40 + (1) REX3-900 would be a great reliable setup. If you want gyro, then add a Cortex Pro.
If you are elsewhere, then use REX3-A40 instead of the 7's.
Best luck
Old 07-20-2023, 10:02 AM
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model1258
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jvaliensi
Thank you,I am located in Southern ,Indiana.What I need is ;
1) Jeti central box 220 power dist.unit W/magnetic switch
1) Jeti duplex ex R3 Rex 900mhz receiver W/ telemetry
2) jeti duplex ex R7 Rex A40 2.4ghz receiver W /telemetry(sleeve dipole 400 mm antennas
Is this pretty much Correct and what Batteries would you recommend to use?
Thank you
Old 07-20-2023, 10:13 AM
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I think you might like adding a R3/SW to your list. Then you can turn the model on from the transmitter.
They sell the CB's with three R3/SWs - this works great too, then you wouldn't need the REX 7s. However, I think the dipole antennas of the REX7-A40 are better.

Jeti sells 18650 battery packs with the Multiplex connectors. They are good.
I like to make my receiver packs from a pair of Samsung 40T 21700 batteries.

It is likely that your Rebel will need some nose weight. I recommend finding the amount needed and then select batteries by weight. I have a Rebel Hot with an X90 and I use a RC car hard case battery. It was way more capacity than I'll ever need, but it was the right weight.
Old 07-20-2023, 10:20 AM
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Bob_B
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Model 1258, If your'e in Southern Indiana you should come visit us at Rosewood, www.rosewoodrc.com or maybe you are familiar with the club?
For your setup, I would use a Rex 12 going thru a Cortex Pro, you can use an R900 as a backup into the Rex 12, for dual batteries use a Jeti DSM10
I use this exact setup in my CARF Joker which is similar in size to. your Rebel.
Good luck


Originally Posted by model1258
jvaliensi
Thank you,I am located in Southern ,Indiana.What I need is ;
1) Jeti central box 220 power dist.unit W/magnetic switch
1) Jeti duplex ex R3 Rex 900mhz receiver W/ telemetry
2) jeti duplex ex R7 Rex A40 2.4ghz receiver W /telemetry(sleeve dipole 400 mm antennas
Is this pretty much Correct and what Batteries would you recommend to use?
Thank you
Old 07-20-2023, 11:03 AM
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model1258
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I live in Seymour Bob,Iíve met you I think we were flying at Dayton behind Air Force museum. Thatís been 7 or 8 years ago . I think you invited me to rosewood back then. Iím just starting to get started in the Jeti . So all information is helpful!
Old 07-20-2023, 11:24 AM
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jvaliensi
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The Joker uses smaller servos than the Rebel. And the Joker's mission is to fly fast, while the Rebel is somewhat slower but much more aerobatic. Hence, the Rebel servos may draw more current.
I've seen 2m Rebels and other similarly sized models with a REX12 + clone or 900MHz backup and they are successful. I've used the same arrangement myself, again with good success.
I used CB220's too. They other a lot of features and protections. They are fun to play with.
My most recent airplane, an Avanti XS is using REX10 + REX7-A40 clone, and Elite T70 dual battery device. I get dual battery safety, know each battery's condition, telemetry expansion and R3/SW switch. The install is a little messy compared to a CB220. It may be a bit cheaper, but I don't get the fused outputs that the CB220 has.
There are so many good options for the Rebel (1.8-2.2m) sized aircraft. Bigger or smaller models have less choices.

Old 07-20-2023, 11:35 AM
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model1258
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Well, Thatís the reason I started this thread because Iím very capable of getting it setup itís seeing what the options are and what to use that other people have used. On another question I have a demon cortex that I bought a few years ago still brand new in box and never used would it need updating etc.
Old 07-20-2023, 12:06 PM
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Model 1258, please reach out to me anytime. I'm headed to the field this weekend to fly if you want come down.
Bob

Old 07-20-2023, 12:11 PM
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jvaliensi
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I would check the Cortex to see if there are updates. Bavarian Demo hasn't issued Cortex updates for a long time, so you may be up to date.
The Cortex requires a wire harness connection to the receiver. A Cortex Pro has a serial bus interface, which is one wire.
Old 07-20-2023, 12:26 PM
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Ok,Thank you
Old 07-20-2023, 12:53 PM
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Arenít the antennas the tips? Itís the RF cable length thatís different. Thatís what I believe it is. Was told to use a REX12 plus the 900mhz and the RSW3 as the switch. Works great. I also have the DS-24. I came from a JR world. The Jeti system is different but I eventually figured it out with help from club flyers and Harry!
Old 07-20-2023, 01:14 PM
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Bob_B
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There are not any updates to the Pro
Old 07-21-2023, 02:49 AM
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Guys, if you are using a CB220 or CB210 ( no fused output ) there is no need to go for anything bigger than the R3 receivers as these offer full 24 channel output via the EXbus connection.
However for a cost effective gyro upgrade, you might want to consider putting a REX6 Assist as receiver 1 in dual path. The REX6 gyro will be active as long as the system does not switch to receiver 2.
In this case, the gyro upgrade comes at less than 80 USD and is fully configurable "live" from the transmitter device explorer.
Also the REX3 receivers are available as R20 and R40 versions. These are coming with longer coax ( respectively 20 and 40 cm ) and a special antenna that reduces the loss of signal incurred in the longer coax.
Some people claim that the performance of the R20 and R40 versions is better than the regular version but our measurements made on site for military applications do not show a significant difference. Still, it might be convenient to have longer antennas in certain applications. Just remember that the EXbus serial connection does not see any loss of packets for wire lengths up to 6 meters ( and more with really good quality crimped wires ). So the R3 itself can be moved away from the CB into a convenient area. This is what we do on full carbon fiber airframes with no performance loss.

Also, consider that the Jeti DC-24 II is already selling in Europe and the DS-24 II should be available soon ( pending FCC approval, I guess ) so the older version might be found at discounted price as stocks clear.

Last edited by olnico; 07-21-2023 at 02:51 AM.
Old 07-23-2023, 04:09 AM
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Model1258 I sent a PM

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