Thread: Need a little help with my Logo 600

Just got my logo 600 flying and I have a couple of issues I was hoping someone would be able to help me with, one concerning the electric side of things, which I am very new at.

Ok firstly the leccy side of things, setup is logo edge 620 blades scorpion 3540-500kv 106T main gear kontronic 80hv running mode 4 lipos are opti 6s 3500mah.

When I started using it, it had a 12t pinion on it and a headspeed of 2200 was at around 45% ans I know the kontronic should be running at around 85% for that headspeed.

I checked with mr mels headspeed calculator and on this setup an 11T pinion should be giving

65%. 1965
75%. 2084
85%. 2203

I changed the pinion this morning but checking headspeed it's actually giving me the 2200 @ 65%. I didn't wind it up any further than that. Little bit more info 2000 was @ 55%

I altered the peramiters to Give me in the prog what I am getting at the field and then changing the pinion down to a 10T and with this the prog tells me ll get

65% 2000
85% 2283

So have I got something wrong or is this all ok and I should go to 10T, and if I do what will this mean regarding power and longevity.

Any thanks for help and comments.

Just for comparison Im using a 13 t pinion With a 500kv motor Tony and am running around 2150 with an 85% curve.(10s setup though) and mine runs very efficiently.
Have you calibrated your throttle so that your 65% is actually 65%?

Tony I may be wrong but I think you'll find to run a logo on 12s at the correct head speed you need a motor of around 400/420 KVA. I'm currently gathering the required bits for a logo 600 myself and all the advice I've been given suggests that if running on 10s batteries 500kva is required and if running on 12s 400kva is needed.
Your not going to do the ESC a lot of good if you continue to run at around 50 to 60% of its ability. In the ideal world you'd be looking ato around 80% throttle in inormal mode and 90% in idle 1 with 100% in idle 2, this keeps the ESC running at its most efficent position which is usually above 75%.

Originally Posted by tonystevens

Just for comparison Im using a 13 t pinion With a 500kv motor Tony and am running around 2150 with an 85% curve.
Have you calibrated your throttle so that your 65% is actually 65%?

On 10s Tony that would be correct, but Sesame is running 12s with two Opti 6s 3500mah packs.

Forgetting governors for a moment but accepting the system is 90% efficient using a 11T pinion will give you a headspeed ranging from 2353 when the pack is fully charged dropping to 2073 when the cells drop to 3.7 volts.

What is the actual headspeeds you would like to run at?

Originally Posted by Downdraft

Is that on 10 or 12s Tony??

Yeah sorry thats 10s just noticed your 12s. I think tony has the correct motor (500kv) for a 12s setup though so should just be a matter of choosing the right pinion.

Originally Posted by tonystevens

Just for comparison Im using a 13 t pinion With a 500kv motor Tony and am running around 2150 with an 85% curve.(10s setup though) and mine runs very efficiently.
Have you calibrated your throttle so that your 65% is actually 65%?

Very good point.

I'm running 11T on my 500KV Scorpion with 12S no problems. Just go for a headspeed and feel that sounds right, put down any measurement tools . Just for info with this set-up it easily varies from roughly 1800-2200.

The only calibration you need to do is the initial Jive set-up. End points are just fine at 100/100 with no sub trim or trim on the throttle channel. The numbers of throttle output really have no relation to the actual ESC percentage so just fly and adjust to what you like.

Originally Posted by Sesame

setup is logo edge 620 blades scorpion 3540-500kv 106T main gear kontronic 80hv running mode 4 lipos are opti 6s 3500mah.

Tony, if your packs are all new and the same size/make you will probably be better running mode 11. Mode 4 is for packs of varying age/ make.

The only calibration you need to do is the initial Jive set-up. End points are just fine at 100/100 with no sub trim or trim on the throttle channel. The numbers of throttle output really have no relation to the actual ESC percentage so just fly and adjust to what you like.

If someone is trying to share their figures or asking what percentage others are using then unless everyone does the calibration as you state the figure is meaningless. The OP has an issue and the only way anyone can help is if they know if he has done the calibration or not. Just accept that some like to get rid of the deadband.

Thanks socfar guys, For clarification

12s yes they are the same packs at the mo I'm bedding them in. Will try mode 11 once their all bedded and happy.

Yes I've done the throttle basically to mr mels spec. So no dead band.

As far as I can see the only way of getting this throttle up is to down the pinion. I've already hit the thermal cutout once don't want to again.

I'm after a target of 2200 @ 85%

Thanks for all the thoughts keep em coming

You've hit thermal cutout as in the ESC was hot to the touch? Something is playing up I can't see how you can hit thermal with 11T on 12S with a 500kv motor. Any ESC LED codes when that happened?

Edit:

Even running 90% which is more like 100% in ESC terms for my set-up my ESC was only slightly warm, mine is heatsinked but even if it wasn't it still wouldn't be more than just warm.

Mine is identical to Laurence's and I just go with what sounds right, 70% in idle up one , 75% in idle up two I don't bother with the mr mel dead band set up either, I just fly it .
On opti 3500's 12 s I get 7 mins of total fum.

As for the tail Bls 251 third hole out on a futaba 4 arm horn workers very well on a total g fbl ,only just swapped to v baaaaaaa so can't comment yet on that, I am sure you ar just a big Jessie and just true balling at the awesomeness of the logo ;-)
Lol
Rach

I kept track of all my headspeeds,and jive settings from my logos,they may be of use.

model motor pinnion jive% headspeed
se 690 pyro 450 12t 73 1900
3d 620 pyro 450 12t 85 2100
3d 600 align 470 12t 83 2200
3d 600 align 470 12t 75 2100
3d 600 pyro 520 11t 61 1900
3d 600 pyro 520 11t 70 2100
3d 600 pyro 520 11t 76 2200
3d 600 pyro 450 11t 92 2100

these were actual transmitter setings using a jive 80hv with the end points optimised on a spectrum radio.

hope it helps


andy k

ok sorry i wasn't clear I hit the thermal cutout yesterday when using 12T pinion I had the thermal cuttout on. the esc had a continuously flashing led which from the book states thermal cuttout.