The never ending engine thread, East-West - Page 1183 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 07-14-2014, 02:30 PM   #11821
Dale Hunter
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Re: The never ending engine thread, East-West


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John, are they selling Jeti radio's by telling modellers I missed a simple step of using a watt meter on a rather new instillation. Over seeing a high electrical load on my batteries?

-Dale-
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Old 07-14-2014, 02:34 PM   #11822
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Re: The never ending engine thread, East-West

Good point:
How many modellers use a watt meter to evaluate battery draw?

My Ultimate came to me drawing 14 amps with full surface deflection. Since a full reset on my Smart-Fly EQ10. Then re-programed. It is down to 2.5 amp draw full surface deflection (static).

-Dale-
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Old 07-14-2014, 03:00 PM   #11823
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Re: The never ending engine thread, East-West

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Originally Posted by Dale Hunter View Post
Is there a fuel level sensor available John?
Jeti released a fuel flow sensor for gas and turbines. Flow rate range is great for turbines. Thinks flow rate range is just ok for 100cc gas, better for bigger 150-200cc. Jeti jet guys are raving about turbine version.

http://www.espritmodel.com/jeti-tele...ow-gas-ex.aspx

I am have been playing with two ideas.

First is was a "Fuel tank is full sensor" preflight sensor. Idea is to ensure you filled the tank at power up!
http://youtu.be/vRgO1EV8G_Q

Let just say the EM has it's characters too! Here us what my Jeti says when tank isn't full!
https://www.dropbox.com/s/m7npr8fcmq...~FuelAlarm.wav

More recently I have been playing with a empty tank sensor. Scott and I observed that some engines run a really long time while a felt clunk is drawing bubbles. His mvvs ran 60s at 1/2 throttle after the first bubble. It was continuous bubbles for that 60s! It didn't slow or cough until the last 5-10s!

So I been trying the make a simple sensor the detects bubbles leaving the tank. No mods or special tank, just clips on 1/8" fuel line.

I have it working on bench. Very reliable signal as bubble passes. Its going in a plane later this month.

Couple pics in this folder.
https://www.dropbox.com/sh/uwswnqy7m...GgT3CGLmJB3Zka

Gives voltage of 2.5v for dry line. Gives 0.5v for a bubble. Gives 4.0v for gas.

Snap it on the line. Power it. Push a button and it learns and remembers the transmissivity of your empty line. The rest is automatic. Then it's just alarming based on the voltages.

One blip (one bubble) keep flying! But a series of blips, reduce throttle, plan a quick landing, be ready for dead stick! Base on Scott's mvvs if you reduce thr immediately, you could run at a flyable low throttle for 90s! A lifetime to land!
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Old 07-14-2014, 03:10 PM   #11824
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Re: The never ending engine thread, East-West

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Originally Posted by Dale Hunter View Post
John, are they selling Jeti radio's by telling modellers I missed a simple step of using a watt meter on a rather new instillation. Over seeing a high electrical load on my batteries?

-Dale-
That one of the beautiful things about jeti is it's central box!

Dual bat inputs. Built in bat sharing if one fails. Both bats have voltage, current, and totalized mah capacity used telem. All servo ports are short protected with resettable poly fuses. Central even tells you via telem how many and which ports are shorted! You have to be a complete Jackass with blinders on, to takeoff with a bad bat or a installation problem (short, etc)! It practically hits you on the head with a hammer! LOL
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Old 07-14-2014, 03:10 PM   #11825
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Re: The never ending engine thread, East-West

Interesting John.

But if I had not "DRIVEN" my 100cc Extra in at Drayton. I would not be enjoying a GP 123.

Yes, if I was in the market for a new radio, telemetry would be in there.

-Dale-
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Old 07-14-2014, 03:13 PM   #11826
Dale Hunter
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Re: The never ending engine thread, East-West

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Originally Posted by cravenjw View Post
That one of the beautiful things about jeti is it's central box!

Dual bat inputs. Built in bat sharing if one fails. Both bats have voltage, current, and totalized mah capacity used telem. All servo ports are short protected with resettable poly fuses. Central even tells you via telem how many and which ports are shorted! You have to be a complete Jackass with blinders on, to takeoff with a bad bat or a installation problem (short, etc)! It practically hits you on the head with a hammer! LOL
O.K. I'm a Jack-ass.

So what did everybody do before Jeti? A wattmeter was the best we had. I still have two. My original, and a newer version.

-Dale-
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Old 07-14-2014, 03:19 PM   #11827
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Re: The never ending engine thread, East-West

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Originally Posted by Dale Hunter View Post
Interesting John.

But if I had not "DRIVEN" my 100cc Extra in at Drayton. I would not be enjoying a GP 123.

Yes, if I was in the market for a new radio, telemetry would be in there.

-Dale-
I guess every crash opens up new opportunities!
But I would much rather save them with telem and sell them! LOL

Still looking for sensors that say;

"It's early and you need more coffee before you fly!"
"A roller that low is a really bad idea!"
"Stop listening to Trevor yelling lower!"
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Old 07-14-2014, 03:27 PM   #11828
Dale Hunter
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Re: The never ending engine thread, East-West

Well I am not in the market for a new radio. If I was it would probably be a Jeti, over a Graupner.

Thought for the day:

How well does an altimeter work when flying inverted?
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Old 07-14-2014, 03:29 PM   #11829
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Re: The never ending engine thread, East-West

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How well does an altimeter work when flying inverted?
LOL!!! works just as good as being upright
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Old 07-14-2014, 03:29 PM   #11830
Dale Hunter
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Re: The never ending engine thread, East-West

Hey!
BansheeBoy, a fuel guage on our airframes. "I flew the last half of my final flight inverted. The telemetry said my fuel went from 1/2 full - full, then I crashed!"
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