The reason JetCat's are boring
02-03-2011, 05:33 AM
#1
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The reason JetCat's are boring
The delivery of my P20 from Ali was next day within the time hour specified, Put the P20 on a rig, attached the Rx, Learn RC came up on the GSU, did what I was instructed by the GSU, fueled up throttled up and it started, what impressed my the most was the spool up time, from 85,000 to 245,000 took about 3.5secs, not scientific, just a count on my watch.
Mike
Mike
02-03-2011, 05:42 AM
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RE: The reason JetCat's are boring
Kero start as well... 
I know what you mean about the boring thing though. I almost miss the days of failed starts, flames chucking out the pipe and fire extinguishers at the ready.
Nice one Mike! Have fun with it.
Regards Al
I know what you mean about the boring thing though. I almost miss the days of failed starts, flames chucking out the pipe and fire extinguishers at the ready. Nice one Mike! Have fun with it.
Regards Al
02-03-2011, 05:47 AM
#4
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RE: The reason JetCat's are boring
Ali
Its just so easy to change to Kero start, push two buttons whilst powering up the Rx and that's it done, changed from Gas to Kero.
Can't wait to get the Habu, but I suppose I will have to, meanwhile I will have to look at what I have alredy that I can put it in, I think the Spear is to small, have to search through the loft.
Mike
Its just so easy to change to Kero start, push two buttons whilst powering up the Rx and that's it done, changed from Gas to Kero.
Can't wait to get the Habu, but I suppose I will have to, meanwhile I will have to look at what I have alredy that I can put it in, I think the Spear is to small, have to search through the loft.
Mike
02-03-2011, 05:49 AM
#5
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RE: The reason JetCat's are boring
ORIGINAL: Couch Potato
How can it be boring with that oil rig sticking out the side of the can !
How can it be boring with that oil rig sticking out the side of the can !
Just have to wait for the delivery of the low profile Kero plug.Mike
02-03-2011, 05:53 AM
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RE: The reason JetCat's are boring
ORIGINAL: Ali
I know what you mean about the boring thing though. I almost miss the days of failed starts, flames chucking out the pipe and fire extinguishers at the ready.
I know what you mean about the boring thing though. I almost miss the days of failed starts, flames chucking out the pipe and fire extinguishers at the ready.
There are still some that will do that for you!!!
02-03-2011, 05:59 AM
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RE: The reason JetCat's are boring
What's the spec on the ECU LiPO, how many mAh consumed on a start ?
Have you asked Jetcat about A123 ECU modification yet ? (although size of a 3S A123 would be a problem in a small airframe)
Have you asked Jetcat about A123 ECU modification yet ? (although size of a 3S A123 would be a problem in a small airframe)
02-03-2011, 06:07 AM
#8
Thread Starter
RE: The reason JetCat's are boring
ORIGINAL: Couch Potato
What's the spec on the ECU LiPO, how many mAh consumed on a start ?
Have you asked Jetcat about A123 ECU modification yet ? (although size of a 3S A123 would be a problem in a small airframe)
What's the spec on the ECU LiPO, how many mAh consumed on a start ?
Have you asked Jetcat about A123 ECU modification yet ? (although size of a 3S A123 would be a problem in a small airframe)
Mike
02-03-2011, 10:26 AM
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RE: The reason JetCat's are boring
Your right.... the autostart ECUed turbine has
made it possible for ......... "Anyone"....... to be able to start a turbine.
Not that long ago in order to be a jet pilot you had to have..... SKILLS.
Skills beyound that of mortal modelers, the capability to handle fuel, air, propane, and a fire bottle....all at once, true multi-tasking.
It was a job for the young, foolish, pilots we once were.
Now we pretty much.......... push the button
and watch what used to be money .....traded in for fuel.... burn.
made it possible for ......... "Anyone"....... to be able to start a turbine.
Not that long ago in order to be a jet pilot you had to have..... SKILLS.
Skills beyound that of mortal modelers, the capability to handle fuel, air, propane, and a fire bottle....all at once, true multi-tasking.
It was a job for the young, foolish, pilots we once were.
Now we pretty much.......... push the button
and watch what used to be money .....traded in for fuel.... burn.
02-03-2011, 10:37 AM
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RE: The reason JetCat's are boring
ORIGINAL: airkiller
Your right.... the autostart ECUed turbine has
made it possible for ......... ''Anyone''....... to be able to start a turbine.
Not that long ago in order to be a jet pilot you had to have..... SKILLS.
Skills beyound that of mortal modelers, the capability to handle fuel, air, propane, and a fire bottle....all at once, true multi-tasking.
It was a job for the young, foolish, pilots we once were.
Now we pretty much.......... push the button and watch what .....used to be money .....transformed to fuel.... burn.
Your right.... the autostart ECUed turbine has
made it possible for ......... ''Anyone''....... to be able to start a turbine.
Not that long ago in order to be a jet pilot you had to have..... SKILLS.
Skills beyound that of mortal modelers, the capability to handle fuel, air, propane, and a fire bottle....all at once, true multi-tasking.
It was a job for the young, foolish, pilots we once were.
Now we pretty much.......... push the button and watch what .....used to be money .....transformed to fuel.... burn.
02-03-2011, 10:42 AM
#12
Thread Starter
RE: The reason JetCat's are boring
With Kero start the Gas bottle is empty thank G*d, but the experience of starting on Kero is without doubt a glass 9/10ths full, will never go back to Gas start.
Mike
Mike
02-03-2011, 10:45 AM
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RE: The reason JetCat's are boring
I filled up my kero glass early this year..... no worries... love the kero starts too,
I'm looking forward to NOT dragging a propane bottle to the field.. someday.
I'm looking forward to NOT dragging a propane bottle to the field.. someday.
02-03-2011, 10:48 AM
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RE: The reason JetCat's are boring
Hi Mike, I am with you on the Gas start!
Direct from JetCat
the P20SE- ECU is no problem, but the P20SE- fuel pump is only for max. 10V, not more!!
You can don’t use 3 cells A123, 2 cells A123 is to low.
You can use only 2s- Lipo battery.
Regards Al
Direct from JetCat
the P20SE- ECU is no problem, but the P20SE- fuel pump is only for max. 10V, not more!!
You can don’t use 3 cells A123, 2 cells A123 is to low.
You can use only 2s- Lipo battery.
Regards Al
02-03-2011, 10:54 AM
#15
Thread Starter
RE: The reason JetCat's are boring
Ali
I rearly want to get rid of LiPo's from my on board equipment and have lots of A123's to use, both 2300Mah and 1100Mah, have you any idea what sort of shunt I need to put in the supply line to the pump to regulate the voltage down to 6 volts?
I am sure I am not alone in this.
Mike
I rearly want to get rid of LiPo's from my on board equipment and have lots of A123's to use, both 2300Mah and 1100Mah, have you any idea what sort of shunt I need to put in the supply line to the pump to regulate the voltage down to 6 volts?
I am sure I am not alone in this.
Mike
02-03-2011, 05:15 PM
#17
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RE: The reason JetCat's are boring
ORIGINAL: Ali
Hi Mike, I am with you on the Gas start!
Direct from JetCat
the P20SE- ECU is no problem, but the P20SE- fuel pump is only for max. 10V, not more!!
You can don’t use 3 cells A123, 2 cells A123 is to low.
You can use only 2s- Lipo battery.
Regards Al
Hi Mike, I am with you on the Gas start!
Direct from JetCat
the P20SE- ECU is no problem, but the P20SE- fuel pump is only for max. 10V, not more!!
You can don’t use 3 cells A123, 2 cells A123 is to low.
You can use only 2s- Lipo battery.
Regards Al
02-04-2011, 01:18 AM
#18
Thread Starter
RE: The reason JetCat's are boring
ORIGINAL: i3dm
A123 three cell pack is 9.9V nominal.
A123 three cell pack is 9.9V nominal.
There are four wires into the pump which one's do I regulate? I suppose I will have to put a volt meter on them to find out, just seems a shame that JetCat did not realise that a lot of people use A123's.
Mike
02-04-2011, 02:23 AM
#19
RE: The reason JetCat's are boring
I don't understand why you would need to regulate the pump voltage, that's what the ecu does. The pump voltage is never going to get anywhere near 9v.
m
m
02-04-2011, 04:28 AM
#22
Thread Starter
RE: The reason JetCat's are boring
On second thoughts the Pump voltage is possible controled in the same manner as an ESC controls an electric motor in which case it sees the ECU voltage the whole time and is switched on and off to control the speed of the pump, this is suposition on my part and I am only quoting the information I have received. i.e. the pump can not take over 10 volts.
Mike
Mike
02-04-2011, 04:57 AM
#24
Thread Starter
RE: The reason JetCat's are boring
ORIGINAL: i3dm
a three cell A123 pack will only stay above 10V for a short period of time, and then go down to constant nominal 9.9V anyways.
a three cell A123 pack will only stay above 10V for a short period of time, and then go down to constant nominal 9.9V anyways.
Mike
02-04-2011, 05:03 AM
#25
RE: The reason JetCat's are boring
Not so Mike, check the voltages on your existing Jetcat, U excl 1 is 0.25v and the max pump volt is usually 3.5v ish. don't forget, it is not a brushless motor.
m
m