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Simjet and Lithiums

Old 01-26-2004, 12:33 PM
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Default Simjet and Lithiums

Hi Ed and Kevin,

Quick question...

I'm thinking about converting the SJ's to Lithium's.

The supplied battery is 9.6V. LiPO's are available in 7.4V and 11.1V configurations.

Are either of the LiPO configurations acceptable?

Curious minds...

Thanks!

Craig
Old 01-26-2004, 12:54 PM
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Default RE: Simjet and Lithiums

Hi Craig,

That's pretty good timing! I just finished putting the connector on an 11.1V Duralite (LiIon) pack for evaluation. (I don't think the 7.4V pack will have the umph to complete a startup, and may not give full throttle on FW200 equipped 3000's and 2300's.)

So far everything looks like it should work out, but I'll advise of my findings.
Old 01-26-2004, 01:07 PM
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Default RE: Simjet and Lithiums

Thanks Kev,

I'll await your findings!

Craig
Old 02-03-2004, 10:34 AM
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Default RE: Simjet and Lithiums

Hi Kevin,

Any updates?

On a related note, my 2300 came with a 1200maH batterry pack. In average, how many "8-10" minutes flight can be done without recharge. (Assuming recharging with a "safe" margin, maybe only using 50% of capacity before recharge)

Thanks,
Edgar

PD: Expect first light-off in ~ 2 weeks
Old 02-05-2004, 07:00 PM
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Default RE: Simjet and Lithiums

Edgar-

I cycled the battery that came with my 2300 three times using a Triton charger before the first start. My battery lasted 2 runs before needing a recharge. I plan on replacing the 1200maH with a 3000maH pack.

Mark
Old 02-05-2004, 08:26 PM
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Default RE: Simjet and Lithiums

Thanks Mark!
Old 02-05-2004, 08:29 PM
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Default RE: Simjet and Lithiums

Mark,
I can confirm there are no issues with using the Duralite 11.1V on the Simjet 1200, we have run this engine/batt combo for 8 flights so far without a charge. Data says we can easily fly 10 flights without charging but the larger engines may consume more MAH per flight. The higher voltage of the LI pack is not an issue and does provide very relaible and consistant starts.
Regards,
Todd
Old 02-05-2004, 08:34 PM
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Default RE: Simjet and Lithiums

Hi Todd,

Do you give the full 11.1V to the ECU or it goes down thru regulator? Do you know if the 1200 ECU is the same as the one for 2300?

I'm also inclined to replace the battery with one of higher capacity.
Regards,
Edgar
Old 02-05-2004, 08:36 PM
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Default RE: Simjet and Lithiums

Edgar,

Let me know if the FOD screen works for you. If it does then let us know as it would be beneficial to all SimJet owners of turbines of this size. (2300)

Kevin
Old 02-05-2004, 08:51 PM
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Default RE: Simjet and Lithiums

Just sent you an email on that.

I received the FOD screen. It fitted perfectly! thanks,

There is no need to make holes for the fuel/propane lines as they go into the case well after the FOD screen. Starter hole was also right on.
Perfect for the 2300.
Thanks,
Edgar
Old 02-05-2004, 09:03 PM
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Default RE: Simjet and Lithiums

That's great news, Edgar!!! I enlarged the hole in the rubber ring for the starter motor by 1/8th of an inch vs the JetCat engines to accomodate the larger starter motor housing. So, the mounting legs of the starter motor cleared the screen too??? What other SimJet engines are similar in size to the 2300???

Kevin
Old 02-06-2004, 07:19 AM
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Default RE: Simjet and Lithiums

Here is a photo of it.
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Old 02-06-2004, 11:50 AM
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Default RE: Simjet and Lithiums

Hi Kevin,

The 1700, 2300, Sonic 120 and 3000 all have identical exterior dimensions.

Craig
Old 02-08-2004, 08:12 PM
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Default RE: Simjet and Lithiums

ORIGINAL: Edgar Perez

Hi Todd,

Do you give the full 11.1V to the ECU or it goes down thru regulator? Do you know if the 1200 ECU is the same as the one for 2300?

I'm also inclined to replace the battery with one of higher capacity.
Regards,
Edgar
Edgar,
No regulator needed. The ECU does not have a problem with the slight voltage increase. I am not sure if there are any differences with the ecu voltage wise between the 1200 and the larger engines but I dont imagine there is. Ed and Kevin can confirm....
I have switched everything I fly over to Duralites on both the RX and ECU pack. Even switched my TX pack over, I can now fly all day without charging anything. I have more than doubled the flights I do per flying session since I switched. I have to drive 1.50 hrs to fly so when I do get to go I want to get as many flights as I can in
Todd
Old 02-08-2004, 09:18 PM
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Default RE: Simjet and Lithiums

I am currently running Duralites on my 1200 in a Bobcat. I can literally fly 10 flights easy.

George
Old 02-09-2004, 07:55 AM
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Default RE: Simjet and Lithiums

Man, I take the weekend off from my computer and look what happens!

Edgar, You should expect to be able to get at least 3 flights from a single charge.

Kevin, Thanks for jumping in with the FOD screen. As Craig indicated, all the "large can" SimJet turbines have the same exterior dimensions.

Todd/everyone, The 1200 ECU is identical to all the other ECU's (except for software) so what works for one works for all. I'll be running a Duralite 11.1V pack on my Facet 2400T with both turbines Y'ed to a single pack. No news yet, but we're close...
Old 02-09-2004, 12:46 PM
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Default RE: Simjet and Lithiums

Kevin,

Will the twin Facet be at Florida Jets?

Looks like I will be switching to Duralites. I am recharging after two flights right now.

Brian
Old 02-09-2004, 03:29 PM
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Default RE: Simjet and Lithiums

Hi Brian,

That's the plan. I'm very much looking forward to collecting the Facet flock at FJ04 to get a family photo... (And NO, I won't say that five times fast!)

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