New prject - DH Chipmunk

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Bob Thompson1894
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Re: New prject - DH Chipmunk

Postby Bob Thompson1894 » May 14th, 2016, 8:38 am

You have been listening to too many people on Facebook, Richard......

richard armstrong
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Re: New prject - DH Chipmunk

Postby richard armstrong » May 14th, 2016, 9:05 am

thanks all

decision made KISS as possible,

but i do prefer 1 channel to one control service so i need 12 plus spares, so 2 batteries 2 rx set-up to give me 16 channels i have this set up on my other 8 channels models, ie tiger moth, wot4xl etc

i will add this at a later date

http://www.staufenbiel.co.uk/DYNAMITE-L ... oCju_w_wcB

i prefer to have a remote kill switch (i am not opening that can of worms again BOB)

as for the CofG and make i will do further research
Richard "the rocket" Armstrong

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chris-berry
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Re: New prject - DH Chipmunk

Postby chris-berry » May 14th, 2016, 3:03 pm

It sounds like you're trying to make life deliberately complicated for yourself Richard!

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Rob Buckley
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Re: New prject - DH Chipmunk

Postby Rob Buckley » May 14th, 2016, 5:54 pm

How do you manage to get to 12 channels with a 1/5 scale Chipmunk?
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richard armstrong
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Re: New prject - DH Chipmunk

Postby richard armstrong » May 14th, 2016, 7:33 pm

Rob Buckley wrote:How do you manage to get to 12 channels with a 1/5 scale Chipmunk?


i dont use y leads unless i need to

actually 12 channels is enough but they don't make a 12 channel rx so u have to combine 2 8 channels.

2 ele
2 ail
2flaps
1 thro
1 kill
2 lights
2 for battery

spilt over 2 RX

chris not trying to make it complex just sounds complex, enough to make it safe and get it back on the ground in one piece if thats ever possible, even though its under 20kg sometimes better to some redundancy than none at all 2 rx give me that redundancy without the cost of a powerboard
Richard "the rocket" Armstrong

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Rob Buckley
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Re: New prject - DH Chipmunk

Postby Rob Buckley » May 14th, 2016, 7:39 pm

No rudder?
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richard armstrong
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Re: New prject - DH Chipmunk

Postby richard armstrong » May 14th, 2016, 8:00 pm

Rob Buckley wrote:No rudder?


whoops for got that one

13 channels
Richard "the rocket" Armstrong

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Re: New prject - DH Chipmunk

Postby chris-berry » May 14th, 2016, 8:07 pm

13 channels for a 80" Chipmunk, wow I'd love to see that set-up!!

Are you sure its not a large multi like a Wellington, B17 or Lanc?

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paul needham
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Re: New prject - DH Chipmunk

Postby paul needham » May 14th, 2016, 8:22 pm

quid on it, bet thats more channels than Daves Vulcan. Come to think of it, my 34 foot span Luscombe only uses 4 channels.

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Re: New prject - DH Chipmunk

Postby chris-berry » May 14th, 2016, 9:07 pm

Richard, just a minor detail but what transmitter are you using, as that might determine the approach you take.

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David Whiteley
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Re: New prject - DH Chipmunk

Postby David Whiteley » May 14th, 2016, 9:17 pm

paul needham wrote:quid on it, bet thats more channels than Daves Vulcan. Come to think of it, my 34 foot span Luscombe only uses 4 channels.

Now then Paul. Don't tell fibs. I agree that it has Elevator, Rudder, Throttle and Ailerons, which is four, but I'm sure that there are other switches, levers, and door handles that are also similarly manually operated.
;)
Dave (Hairy)

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Denis Brown
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Re: New prject - DH Chipmunk

Postby Denis Brown » May 14th, 2016, 10:13 pm

Steerable tail wheel

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Denis Brown
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Re: New prject - DH Chipmunk

Postby Denis Brown » May 14th, 2016, 10:16 pm

David Whiteley wrote:
paul needham wrote:quid on it, bet thats more channels than Daves Vulcan. Come to think of it, my 34 foot span Luscombe only uses 4 channels.

Now then Paul. Don't tell fibs. I agree that it has Elevator, Rudder, Throttle and Ailerons, which is four, but I'm sure that there are other switches, levers, and door handles that are also similarly manually operated.
;)

Lunch box??????? :mrgreen:

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Re: New prject - DH Chipmunk

Postby richard armstrong » May 15th, 2016, 8:56 am

chris-berry wrote:Richard, just a minor detail but what transmitter are you using, as that might determine the approach you take.



taranis frsky

8 chan digital RX

channels split over 2 rx
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Re: New prject - DH Chipmunk

Postby Alan Cantwell 1131 » May 15th, 2016, 3:31 pm

Good practise for the bigger model, but lets be honest, you aint going to be having a super model, i have the chipmunk, it will be getting a single reciever, decent 5c cell 5cell battery pack, JR slide switch, and a mix of mixers, or Y leads, but all components will be tried and tested, keep it simple, thats all that is needed my radios JR dsm2, reciever will be a well flown one, not yet decided

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Re: New prject - DH Chipmunk

Postby chris-berry » May 15th, 2016, 6:44 pm

Just been flying my 1/4 chippy today. 2x 5cell subc 3300 Nimhs running through a backer and a JR 7 channel 35mhz RX with y leads and a JR 9X tx

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Re: New prject - DH Chipmunk

Postby richard armstrong » May 15th, 2016, 8:33 pm

Alan Cantwell 1131 wrote:Good practise for the bigger model, but lets be honest, you aint going to be having a super model, i have the chipmunk, it will be getting a single reciever, decent 5c cell 5cell battery pack, JR slide switch, and a mix of mixers, or Y leads, but all components will be tried and tested, keep it simple, thats all that is needed my radios JR dsm2, reciever will be a well flown one, not yet decided



true no supermodel but i do have the DC3 140" zilroli kit in the shed just go to find the time to build it?

and that will have full redundentcy with PDB
Richard "the rocket" Armstrong

"Fly me to the moon" then crash and burn BABY!

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paul needham
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Re: New prject - DH Chipmunk

Postby paul needham » May 15th, 2016, 8:44 pm

If youve gat a channel to spare you could put one of these in it...
http://www.skybrary.aero/index.php/Terr ... %28TAWS%29

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Re: New prject - DH Chipmunk

Postby richard armstrong » May 15th, 2016, 8:47 pm

paul needham wrote:If youve gat a channel to spare you could put one of these in it...
http://www.skybrary.aero/index.php/Terr ... %28TAWS%29


thats funny
Richard "the rocket" Armstrong

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Steve Vodrey
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Re: New prject - DH Chipmunk

Postby Steve Vodrey » May 17th, 2016, 6:39 am

Hi Richard.
This is getting way too complicated and taking up pole position on the New Projects slot. Technical issues are covered elsewhere.
Here is a simple solution.
I use SM Services powersave boards. Below is a photo of my Bronco which is quite a heavy model (you will notice how much I have aged during the course of your thread)

This model has:-
2 ailerons
Elevator
2 rudders
4 flaps
2 throttle
Steering nose wheel
Retracts
So 13 servos in all.
The 13 servos spread are each connected to the 12 outputs of the powersave box (throttles are doubled up).
All these are controlled with a 9 channel receiver.

On a separate note there are no chokes on these engines either. Thumb in trumpet hole until you get a wet one...

Bronco OV10.jpg
Bronco OV10.jpg (31.01 KiB) Viewed 2976 times


Here is the powersave box

Powersave Box.jpg
Powersave Box.jpg (42.81 KiB) Viewed 2976 times


You will see that it has provision for two separate batteries. These can be 6v NiMh cells or 6.6v LiFe cells if you like. These are separated internally and each has its own independent switch on the way in of course.

Each servo output is connected to the powersave box with a fly lead. If you want to you can make a Y lead to get two outputs from the one input (see below)

Powersave fly leads.jpg
Powersave fly leads.jpg (58.39 KiB) Viewed 2976 times


All the power is now carried in the powersave box and the receiver gets its power via the fly leads.

This set up should be more than adequate for your model.
I have a spare powersave box if you would like it together with the instructions sheet. Please PM me if you are interested.

Steve.


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