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› LI-PO batterys?????
12-07-2004 05:34 PM  13 years agoPost 1
stevengerrard

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Wigan NW of England

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i would like to use them as my reciever pack...

i have found the Regulator but could some one confirm this is what i need

regulator ...please scroll down until the duralite Reg is there


it gives this info with it
"FP-R : Duralite 5.1v Regulator

Excellent quality 7.5 Amp rated (10 Amp tested) regulator alowing receivers to be powered at a constant 5.1V or 5.6V from a 2s1p 7.4V nominal LiPo power source. Constant voltage delivers consistent powerful servo response. Install between switch and receiver. 5.1V version recommended for heli with gyro. 5.6V recommended for up to 1.40 size fixed wing. Typically powered by 2s1p 2500mAh pack, smaller lighter packs also tested successfully. "

i see i need to get the 5.1 version but what battery do you recommend as i couldnt find the pack that it says..

do i need any thing else besides the regulator and battery???


cheers

steven gerrrad

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12-07-2004 05:54 PM  13 years agoPost 2
14U2NV

rrApprentice

USA

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Steven,

That's the same regulator I use.

I currently run ThunderPower 2s1p 7.4 volt 2100 mAh lithuim polymer batteries in my Raptor 50 with a 5.1 volt Duralite regulator. With this setup, I get at least 6-7 flights per pack (probably more, but I just switch packs after 6-7 flights), with all digital servos (2x S9252-cyclic, S9254-tail, S9253-throttle, and Airtronics 94758Z Mega servo on collective).


John

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12-07-2004 06:05 PM  13 years agoPost 3
tris_heli

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Lidlington, Bedfordshire, UK

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Hello Steven,

Ive actually just gone and got the very same thing. I went in to midland and had a look at them but they don't sell a matching lipo pack.

Julian at flightpower is the actual importer into the uk and after a quick phone call i ended up getting a 2s1p 2500Mah flightpower pack and the switch version of the regulator (not the un-switched that midland have got, they were the same price so i went with the added safety). Julian isn't actually bringing the duralite li-ion packs in, just the regulators. The spec on the regs says 5 to 12 volts input so you are looking at 2s setups (as 3s fully charged would be over 12)

Both came to about £75 all in. If 2500mah isn't enough then i also run a TP 4400 2s2p in my x-spec, which you can fly all day long (but from memory that runs at nearly £70 by itself).

Other than that u just need a charger, an additional lead (as you don't normally charge the lipo through the switch on the regulator) and a voltage tester that can put a 1amp load at 7.4V (like the futaba one)

Cheers
Tris

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12-07-2004 06:05 PM  13 years agoPost 4
frankg11

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Bellevue, WA

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Can I run any Li-PO or Li-ion 2s1p with the Duralite regulator?

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12-07-2004 06:09 PM  13 years agoPost 5
stevengerrard

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Wigan NW of England

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thanks for the help..

steven gerrard

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12-07-2004 06:09 PM  13 years agoPost 6
tris_heli

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Lidlington, Bedfordshire, UK

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I think so, it just says an input of 5 to 12 volts so as long as it is large enough there’s nothing to stop you using 2s1p, 2s2p, 2s3p ect....

One thing to note though is that you don't get the safety circuitry that you get with the standard duralite packs.

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12-07-2004 06:52 PM  13 years agoPost 7
stevengerrard

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Wigan NW of England

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thanks for the info Tris

i have currently a 2s1p 2500Mah flightpower pack and the duralite set up ready to buy of flightpower.co.uk but what are the other leads i need and does he have them???

does the duralite have its own switch with it or do i need that seperatly??

why do i need to put a load on at 7.4V??

and what type of connecters does it come with to connect the battery to the regulator or are these seperate items??


thanks for your help


steven gerrard

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12-07-2004 07:27 PM  13 years agoPost 8
tris_heli

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Lidlington, Bedfordshire, UK

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Hello Steven,

Ok, charging... Don't know how you want to set them up but you can either disconnect the lipo and charge it out of the heli or (like me) charge it in the heli (but being careful how you charge them).

If so, you will need to take a second connection off the lipo to charge it by (i used just a standard futaba lead) and i actually soldered the regulator to the lipo pack (one less connection to go wrong).

There's two versions of the regulator, one with a switch, one without. With the without one, you still need a standard switch harness between the reg and lipo (and this provides your charging lead). The advantage of the switched one is that it fails to an "on" state.

Oh, in order to measure the state of charge of the lipo, you need to find its voltage across an 1 amp load (i stop flying when it gets to 7.2V for 2s).. Of cause if you plug it in after the regulator it will measure 5.1v all day long
You can actually measure the voltage through the switch on the switched version of the regulator but as the duralite setup doesn’t charge through here (their packs all have two connections) I have never tried.


Cheers
Tris

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12-07-2004 07:30 PM  13 years agoPost 9
tris_heli

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Lidlington, Bedfordshire, UK

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Oh forgot to say....

With the unswitched one, the futaba or jr switch harness needs to go in between the lipo and the reg and not the reg and the battery....

Even with no radio on the reg still draws a small current which over time will take the lipo below 6v and destroy it.

Cheers
Tris

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12-07-2004 08:34 PM  13 years agoPost 10
stevengerrard

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Wigan NW of England

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ok thanks for the help

steven gerrard

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12-07-2004 09:11 PM  13 years agoPost 11
Britflyer

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Derby, England

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Interesting topic guys.

I would be keen to use a regulator setup, when I move back up to the 90 size machines.

It concerns me that the Li-Po batterys you are using Tris donot have the built in Saftey Circuit. What is the issue with not having it ??

What does the Saftey Circuit of the Duralite setup do ?? Does it just stop you charging on the wrong setting etc ??

How much would the charger required be ??

Cheers

Paul

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12-07-2004 09:36 PM  13 years agoPost 12
tris_heli

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Lidlington, Bedfordshire, UK

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Hi paul,

Well nothing really, its just an an extra line of defence.
Ive been flying for a year or so with a similar set-up to this made by powerflite (who have now gone out of business) and had 100% reliability.

For more info on the safety circuit see
http://www.duralitebatteries.com/circuitry.html

But you will have to mail-order them from the states and you are "recommended" to use their charger.

As long as you are very careful and diligent then there’s no problem. This is very much a DIY setup though and the whole duralite package is better, but at much more $$$$$$. But as long as you have a suitable charger, then you can the flight pack for about £75 .

As for chargers, go for a good one like a schulze 300d (ver 8.?) software. That way it will do everything you could want.

Oh, there's also a new setup by MAH out. Not going to post about it but if anyone wants more info then pm me.

Cheers
Tris

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12-07-2004 09:49 PM  13 years agoPost 13
stevengerrard

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Wigan NW of England

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well after doing some more reaserch i am going to switch over to this type of set-up as it doeas have some real advantages..

thanks again for the info Tris...

Paul what 90 size you going to get??


steven gerrard

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12-07-2004 09:59 PM  13 years agoPost 14
Coloradoheli3d

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Colorado USA

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Hi all,

I run the Duralite system and have found no problems with any of it. You can what size of battery you require the four cell with last longer due to the higher Ma's, but I run the two cell 2000Mah bats and fly a very comfortable 4 to 6 flights per charge and just go home and charge them back up. I would recomend the switched reg so that if the switch fails the worst that can happen is that you can't turn the radio offf on the heli, insted of loosing all power and the model.

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12-07-2004 11:25 PM  13 years agoPost 15
RLO1

rrApprentice

Chandler, AZ

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warning about lipos
We found out recently that cold weather greatly degrades the performance of lipo batteries. I use them extensivly in many of my planks. We have had a cold spell here in AZ (Save the jokes..... ) and I could not figure out why my brushless powered planes were not performing as they ussually do. Someone told me about cold batteries. Sure enough it was the issue.

I am sure there is some discussion about this somewhere on Ezone.

Stick with NICD or NIMH, they work. Bottom line.

-Ron

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12-18-2004 02:34 AM  13 years agoPost 16
FlightPower

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Herts UK

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In-Model charging of FlightPower Duralite RX Pack
Hi Tris,

Your right, at the moment we don't carry the Duralite LiIon packs. Depending on the model we normally reccommend the 2s1p 2500 pack to power the Duralite regulator - though you can go a lot smaller and lighter or bigger and long duration if you want to. You need to put together a pair of 2mm gold connectors or similar to connect the battery to the reg.

Regards in-model charging we now have a 2s balancer box containing Duralite charge balancer circuitry. This can be used as a "smart charging lead" to charge the LiPo pack super-safe stylee via the new balancer terminal.

Regards low temperatures - sub zero is not helpful for LiPo power output but it would have to get really cold to lose power to the servos by which time it would probably be better to go indoors and do something else instead for entertainment.

Julian

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12-18-2004 03:36 PM  13 years agoPost 17
DrDan

rrVeteran

Potosi, Missouri

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As far as charging Duralites, has anyone used a Triton to charge them?

I am wanting to buy a 4000mah Duralite for a 90 X-Spec I am about ready to order , and was wondering if you HAD! to use thier charger, or would a Triton work fine?


Dr. Dan

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12-18-2004 06:11 PM  13 years agoPost 18
spooky007

rrApprentice

Bakersfield, Ca

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Have any of you used the Fromeco Li-po's? Less expensive than the Duralites?


Al

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12-18-2004 09:21 PM  13 years agoPost 19
tris_heli

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Lidlington, Bedfordshire, UK

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Dr Dan, yes i believe you can use any charger that’s capable but you will invalidate your warranty with duralite if you use it..

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