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FES throttle - proportional or on/off
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- Posts: 329
- Joined: 18 Aug 2015, 20:38
- Location: South Cambs
FES throttle - proportional or on/off
Hi all
Any thoughts or recommendations on whether a FES throttle for 1/3 scale should be proportional or on/off
Thanks
Phill
Any thoughts or recommendations on whether a FES throttle for 1/3 scale should be proportional or on/off
Thanks
Phill
- Cliff Evans
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Re: FES throttle - proportional or on/off
Proportional for me.
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Re: FES throttle - proportional or on/off
On a switch is my choice as the only reason for turning the motor on is to climb so no need for proportional. Use a servo slow function to reduce the load on the motor at start up so it ramps up sensibly. The other advantage of this approach is that it leaves the "throttle" stick for airbrakes/flaps.
By using flight modes you can have both the motor and airbrakes on the same stick but it can get confusing if you do not fly the model regularly.
AEB
By using flight modes you can have both the motor and airbrakes on the same stick but it can get confusing if you do not fly the model regularly.
AEB
AEB = Aeronautical Energiser Bunny (with thanks to CW)
- terry white
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Re: FES throttle - proportional or on/off
Proportional for me too. Throttle your motor speed for your required rate of climb, use no more power then required to sustain climb, and save your battery. You will also get a much more controllable flight path. Put brakes and flaps on other proportional channels. However a kill switch to the throttle is a good idea , killed until take off.
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Re: FES throttle - proportional or on/off
On electric gliders, I put motor control on a slider and brakes on the stick. If I didn't have a suitable slider I would probably put the motor on a switch.
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Re: FES throttle - proportional or on/off
Phill, on FES have the throttle control on the throttle stick and you will have a safer more measured operation. The air Brakes and flaps on other proportional controls maybe sliders ? Regards John.
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Re: FES throttle - proportional or on/off
another vote for proportional, on throttle stick. Using phases to change throttle stick to airbrakes. I have in the past had the motor on a switch, and honestly, this is absolutely fine, just as Johns says, using servo slow to give a gentle power up.
I just like having the ability to stooge around in sink using 1/3 throttle.
You pays yer money...
I just like having the ability to stooge around in sink using 1/3 throttle.
You pays yer money...
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Re: FES throttle - proportional or on/off
The method I picked up from competition fliers uses a hybrid approach.
Set up the (motor) throttle on a side slider (I fly mode 2 and use the LHS slider) and then designate a switch as the motor safety interlock - top left for me so that I can use same hand for both. Throttle stick is left free for airbrakes/flaps, as usual.
This then allows two different modes of operation.
1/ Safety interlock switch with proportional throttle on slider as required.
2/ Pre-setting throttle via slider and then switching motor on/off using interlock switch.
Et voila! Both proportional and binary styles available.
I've found this approach works well. For competition flying, where you often pre-set the throttle for particular launch conditions and just flick the interlock switch just before launch. For FES style of flying you can leave the slider at say half throttle and employ the interlock switch simply to engage/disengage power when in danger of falling out of the sky, or simply wanting to stooge around in poor air. Easy enough to adjust the slider if you want a little more/less thrust.
Naturally, the same comments apply regarding slowing down motor response.
Cheers, Brett
Set up the (motor) throttle on a side slider (I fly mode 2 and use the LHS slider) and then designate a switch as the motor safety interlock - top left for me so that I can use same hand for both. Throttle stick is left free for airbrakes/flaps, as usual.
This then allows two different modes of operation.
1/ Safety interlock switch with proportional throttle on slider as required.
2/ Pre-setting throttle via slider and then switching motor on/off using interlock switch.
Et voila! Both proportional and binary styles available.
I've found this approach works well. For competition flying, where you often pre-set the throttle for particular launch conditions and just flick the interlock switch just before launch. For FES style of flying you can leave the slider at say half throttle and employ the interlock switch simply to engage/disengage power when in danger of falling out of the sky, or simply wanting to stooge around in poor air. Easy enough to adjust the slider if you want a little more/less thrust.
Naturally, the same comments apply regarding slowing down motor response.
Cheers, Brett
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Re: FES throttle - proportional or on/off
Many thanks for all the replies!
I’m still undecided.
I wonder whether proportional may give better motor and rudder control during the take off. Perhaps fade in the throttle with a little rudder until wingtips are level and then give it the beans to get off the ground
Phill
I’m still undecided.
I wonder whether proportional may give better motor and rudder control during the take off. Perhaps fade in the throttle with a little rudder until wingtips are level and then give it the beans to get off the ground
Phill
Re: FES throttle - proportional or on/off
Proportional control every time.Phill Tadman wrote: ↑11 Apr 2021, 10:56 Many thanks for all the replies!
I’m still undecided.
I wonder whether proportional may give better motor and rudder control during the take off. Perhaps fade in the throttle with a little rudder until wingtips are level and then give it the beans to get off the ground
Phill
BC