Gary Jefferson

My Feedback: (167)

Is anyone using the Duralite 4000ma pack for starting one of the Jetcat P-180's? I am trying to find out if it will work because the P-180 has a heavy duty starter on the engine. Thanks in advance for any help, Gary

Shui

My Feedback: (2)

Hey Gary,

I was using that for my P-180 when it was on my KingCat. It worked fine for the few flights I had on that setup. I think the only way it would be a problem is if you have the new kero-start setup, then it wouldn't be enough.

Gary Jefferson

My Feedback: (167)

David, thanks for the information. Bob at Jetcat also told me it would probably be an issue on the kerostart but he wasn't sure about the standard setup. I will go ahead and use what I have then I guess. Thanks again, Gary

John Redman

My Feedback: (8)

Hey Gary, The P-180 pulls close to 18 amps + during start with the propane system. It draws the same as the P-200. I would recommend not to use it.

mr_matt

My Feedback: (10)

I have a high quality 1800 mah NiCad and it can barely start the P-180 on a 30 inch long extension

wojtek

My Feedback: (73)

I am having a 4000mah Duralite installed in my Rafale with a P200 for power, is this not a good idea ??



Wojtek

GoeKeli

My Feedback: (18)

Does anyone know how many amps the P-120 pulls on startup? Seems a lipoly would be best for an 18amp draw and up.
Good luck with your plane Gary.

Joe

mr_matt

My Feedback: (10)

Hi Joe,

I am not a big lipo guy (getting my first lipo TX battery tomorrow I hope) but I know many people that run P-120s with them all of the time. They use maybe 450 mah per complete flight cycle.

As for the P-200, wojtek, the issue is less the battery capacity than the current draw. This has to do with a somewhat higher internal impedance of the lithium packs. I would yield to those with more experience with the P-200/lipo to give you a specific answer.

Regards,

Flyjets

My Feedback: (51)

Gentlemen

The latest Generation of ThunderPower or PolyQuest are rated at 22 amps continuous and spinning the starter on the Jet Cat should be effortless for one of these new Generation cells.

The weight should be around 4.1 ounces. I haven't tried using the LiPos on the starters but I am very familiar with them using in numerous other projects.

Ian

Bandito

My Feedback: (5)

Matt, I think your going to fall for the Lipo's in the transmitter. I have been flying them for about 6 months . You should be able to fly for 3 or 4 week ends all day between charges and they charge up quick. Good luck... Ray Blair

HotelSierra

My Feedback: (9)

Where can I order a LiPo for my JR 10x? Will this fit without any modification to my transmitter?

tahfiet

Hi guys!

I am using Lipos with two turbines.

With my P-120 I use a Kokam 2S-3200 pack. Works perfect and gives wuite some run-time. The 3200 Kokams are good for 20C discharge, which makes it a 64A current. Should even suite the P-180/200.

Most Lipos have at least 10c permanent discharge current. I would not use a too small battery on a jet, so 2000mAh might be the smallest. With 10C discharge you can draw 20A. If you are not sure use two 2S2P packs.

Greetz,

David

John Redman

My Feedback: (8)

The P-60/70/80/120/Titan can use a duralight pack with sucess, we have seen it many times. The problem with the P-200 or P-180 is trying to get the heavy mass of the compressor/t-wheel assembly moving. 18 amps is regular and I have seen as much as 25 amps pulled during a start, and for a small period of time. If you opt to run the duralight packs for the large motors, you might want to "Y: harness off and add an extra battery just for the startup. Back when I was at JetCat (working there) we did not recommend using anything but the factory NiCad pack or a NiMh pack on the larger motors.

Gary Jefferson

My Feedback: (167)

I spoke to Duralite today and they already have the answer for the larger engines in the form of Lipo's specifically designed to work with their existing LI-Ion chargers which is a great benefit in my opinion. It includes the built in charge safe circuitry and they are available in 3000ma and 4200ma packs. The 3000ma Li-po pack is basically equivalent to the 4000ma Li-Ion or maybe a little better and the 4200ma pack lasts even longer...Thanks again for all of the help from everyone. Gary

Willfrance

I am using 3300 mAh LIPO's from Emcotec( long go S ) with my P120 + Spiderjet F16 and it does not work
the problem is that emcotec places an electronical security circuit inside the pack and the ECU does not acceptit
I opened the pack, to disconnect the electronical chips, and now it works !

I also used the original NiCd pack with longer wires, and it did not work due to the 50 cm I added
Comming back to original lengh of wire made it work back again

I also use 2 lipo's 3300 mAh from Emcotec ( long go without electronical security ) in my Airbus for the 2 ECU's, and I never got any problems
Will

Harley Condra

My Feedback: (4)

Another word of caution, if using the kero-start system on the large engines...P180 and P-200.

JetCat supplies a 3300 Ma Ni-Cad pack with the kero start versions of these engines. The current draw requirements of this system work just fine with the 3300 pack supplied....because of the current spike at rotation (as John Redman stated), Li-Po's and Li-Ion's don't supply enough current to support the (simultaneously) starter motor rotational requirement and the ignition system heater element.
The heater element and spray nozzle has a fuel line connected to it that gets fuel from the pump, by way of the starting gas valve, to introduce kerosene that replaces the PowerMax. A small amount of fuel system re-plumbing is required when retrofitting this system to an existing installation. I'll let you know how it goes when I install my new P-180 (replacing a P-120) in the KingCat in the near future. Should have tons of vertical!!!!!


Harley Condra
BVM REP
JetCat REP

3DHELINUT

My Feedback: (3)

I have a question for you guys, why would you want to use duralite batteries in your transmitters?
130.00 for a 1300 MAH 10X pack, 123.00 for the same size pack for a ZAP radio.

You can get a 2500 MAH NIMH pack for under 45.00 from NOBS batteries.



Alan.

Steve S

My Feedback: (54)

Thats a good point there,one is not trying to save a few ounces on your transmitter

I love my new Futaba 14MZ(my Xmas present to myself ), It has a 2250 mah Li-Ion battery-a beautiful thing Just finished uploading images of my jets to display on my 14MZ

I have 2 of the G3 12 channel recievers at the moment -goodbye to Matchboxes baby


Steve

mr_matt

My Feedback: (10)

Higher voltage = more power output

3DHELINUT

My Feedback: (3)

Matt what will the higher power output and half the operating time really get you.

Alan

3DHELINUT

My Feedback: (3)

-

mr_matt

My Feedback: (10)

Was that enough smilies??

mr_matt

My Feedback: (10)

More range

3DHELINUT

My Feedback: (3)

Yes, more range. so in effect it will do nothing for 99% of us.

I don't need more than visual range what i need is extended operating time.

Alan

mr_matt

My Feedback: (10)

OK I do not want to get into an arguement, but I am talking about range margin. In other words, ALL OTHER THINGS being equal, a higher TX pack votage (in my radio) will increase range, as well as burn through intentional or unitentional interference better as well.