Hi Roly

Yes this is exactly what I did.

Regards

Isaac Najary

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Hi Najary

I assume that the charging jack you install is to charge the LI-PO battery for the RX when it is in the model.

In case of flame (it is still a LI-PO battery after all) isn't it better and safer to charge the battery out side from the model it self? It will also save you some grams (jack and wire)

What is the weight of your power system. Switch, regulator cables etc. A couple of pattern guys here in South Africa are now using the Emcotec DPSI mini switches.

They come in either dual or single battery supply setups. Weight is about 28-34g for the unit. I like the system because it has no mechanical switching parts and the regulator is already included.

Peter
www.cerebus.co.za

Even if you don't charge in the model, a charge jack will enable you to measure the voltage of the battery without unplugging it.

Magne

Hi Magan

You are right!

It is so simple to check it with out this jack.
The canopy is contacted to the fuselage by BVM HATCH LATCH.

In my opinion it is better to go safe and light although it is not necessary the easy way.

Najary made a beautiful work so far and I am sure he will keep doing it same way!

I think he saved lot of weight in amazing way. Charging jack is a waste of weight and also working time, but it is just me

Thanks you Najary for wonderful log!

Cancelled

Hi All

I have no experience with LI-PO battery for the RX.
The reasons I put the charging jack are:
1. I don't like the idea of connect / disconnect the main power supply so many times because of the option of connector weakness.
2. I would like to have the option to check the battery without the need to open the canopy.

I would be grateful if you out there tell me what are you doing in concerning the subject ? Do you charge the battery inside the model ?

Isaac Najary

Yes, charging Lipo in the models since 2001.

Brian

You are right to worry about repeated connect/disconnect of standard plug. I use 2mm bunch connectors (normal small e flight power connectors here in UK) and charge outside the model. Overlander.co.uk is a good source.

Malcolm

Hi Malcolm

I liked the idea of using the E-flight connectors for battery.

I asked Najary by phone and also some weeks ago at the airfield that we flying together and I would like to ask you (and any one here) what are the differences between the connectors of the ailerons servos and extensions to the same connector but on the LI-PO battery? Why the servos extensions connectors are not loosing up and to be considered as secure but when it comes to the battery issue it is not safe enough?[sm=71_71.gif]

On my C-ARF Integral I use TP 1320 mA and power box digiswitch.
I use a heavy duty JR connector on the LI-PO and NEVER charge it in the model!
I am just to coward to burn my model.

Hi Peter

Here are the weights, the switch is also a regulator
http://www.powerbox-systems.com/e/po...itch/start.php

Regards

Isaac Najary

Hi Ram,

The reason I us e flight connectors is twofold. Firstly the wire gauge fitted to most lipos is much heavier than the wire that can be crimped to R/C connectors so it is necessary to join the wires. Secondly the spring action in the R/C connector is not good enough for repeated connection and disconnection.

Malcolm

For Lipos in a plane I use the Multiplex MPX plugs and sockets. Yes they are a bit heavier than the standard JR plugs but they have three connections per pole and hence give a bit more reliability. Just a personal preference. Oh and the emcotec DPSI mini switches also come with MPX sockets on the leads (optional, default is Uni/JR plug)

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Saving 33.8 gram:

fuselage 25.0 gram
belly pan 2.6 gram
canopy 1.4 gram
T-Canalizer 1.6 gram
wheel pans 3.2 gram

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hi Isaac , see you are "silking"the rudder . What are you using as cloth ? .

Will you be doing the same to the wings or will you be using plastic film ?

Thanks
juan

Hi Juan

I use thin rice paper for the rudder, I am going to use Top Flite Monokote for the wings and stabs.

Regards,

Isaac Najary

Weights before covering:

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Hi Isaac , Roly and have been discussing the way you do your covering . It is the reverse way that we normally do it . Any specific reason why you first put the stripes down and then follow with the primary colour film ?

Thkx
Juan