Tango 45-07 in Logo 6003D

[LITHIUMSTATIC]

Well I ran the Tango 45-07 today. Did a few hard climb outs and pitch pumping. I like it! It's not a crazy beast like my NEU 1912H/1Y, but it's no slouch either. I'll have more flight reports when I get my canopy back from the painter.

I'm running a Jazz 55 with 75% throttle in gov on a 13 tooth pinion. I'm getting a theoretical head-speed of around 1950ish. Sorry I don't own a tach. I'd say a 14 tooth pinion will make most people happy and 15 tooth for hardcore 3D. I'm going to order a 14 for myself. I think a 13 tooth on a v-bar would be just fine for most sport fliers and 14 tooth v-bar would be a sweet spot for sure.

I think me and the Tango 45-07 are going to get along very well.

[dahld]

Yea, I like 'em too. I have a 45-10 that has 529 logged flights on it. I have it out of the heli (Logo 10-3D) due to a crash, and there is still NO perceptible bearing play, and the rotor continues to spin freely for 30 seconds when I give it a spin between thumb and index finger. Coolest running motor (as in not hot) I've ever owned. Can't beat the quality and efficiency.

Take care, Dave.

[th3tick]

Good news! Mine should hopefully arrive tomorrow, to replace the same motor in the same heli, with the same ESC...

I may start with the 14T myself, as... well... I'm just a touch greedy on the headspeed ;)

John

[jamesotron99]

I'm interested in your results guys, my Hacker comes back from a 5 minute hover hot enough to burn and smelling of electronic death every time.

[LITHIUMSTATIC]

I'm going to borrow a temp gun from a buddy and get temps on everything. Also I'm going to spray Silicon Grease on the pinion and main gear to help with excess heat from friction. My motor was on the toasty side but not enough to hurt anything...... may try and give it a tad more backlash like .2 or .3 mm

[Wbird]

I had heat issues on my Tango 45-08 when I first tried it. Motor was hitting 130-150 after hovering a bit. FDR showed 27-30 amps in a hover and 1200 watts. I rechecked my pinion mesh (advice from a friend) and found it a bit too tight on one side of the main gear. Main gear slightly out of round. I adjusted it so that it just tightens up with no backlash on the main at the tight side and on the other side it has a bit and ran it again. Motor temps now hardly go over 100 and in a hover I have less than 20 amps and around 600-800 watts.

Another thing I was told to check pinion mesh is to check pinion temps after running and make sure that it is no hotter than the motor itself. If it is hotter than it has too much friction and needs to be backed off.

Good Luck

[th3tick]

Received, and installing it... Boy it looks small compared to the 1912!

John

[LITHIUMSTATIC]

Received, and installing it... Boy it looks small compared to the 1912!

John

It does.... but it's very nice for it's size weighing in at over 100 grams less than the 1912. Not a power beast, but still can hold it's own very well.

[Danyboy]

Hey Jeremy,

Purely out of curiosity...

Here in switzerland, the Tango 45-XX is just below 400$, the 1912H is at 270$ (rounded values, don't know the exact exchange rate).

Since I'm closely following the discussions on the optimum powertrain for the Logo500, please enlighten me, what do you seek as an advantage of the Tango over the 1912H?

I see the 1912 as being more powerful and cheaper than the Tango, so is there something I've overlooked or didn't take into consideration?
Does the lower weight of the Tango help that much?
Or the better efficiency of the Tango?

Thanks very much for any elaboration! :)

Cheers,

Daniel

[th3tick]

Not to jump on Jeremy's answer, but...

For the 500 (if you meant 500), I really like my 1910. For the 600, I wanted to stick to the Jazz 55-10-36, and tried the 1912. To govern it to the headspeed I wanted, I had to get it down in the 40% range, which made the ESC overheat.

The issue stems from the KV of the motor, combined with the available pinions for the Logo. Shawn (OICU812) would likely argue the pinions aren't the issue, but the combo of the ESC and the motor ;)

And... There are a number of people, RJohn at the top of the list that I know of, who use the 1912 with the CC 85HV successfully. That ESC apparently handles governing it that low just fine.

I wanted to stick to the Jazz ESC I already had, and thus, I followed Jeremy to the 45-7. Over here, the Neu 1912 is about $250, and the Tangos are around $265, so not much of a price difference.

John

[Shuttle RG]

Where are you guys getting the 45-07 in the States? I have a 45-08 and 45-10 and have been trying to find a distributor for the 45-07 and 45-09 in the US.

Thanks,
Clark

[LITHIUMSTATIC]

Hey Jeremy,

Purely out of curiosity...

Here in switzerland, the Tango 45-XX is just below 400$, the 1912H is at 270$ (rounded values, don't know the exact exchange rate).

Since I'm closely following the discussions on the optimum powertrain for the Logo500, please enlighten me, what do you seek as an advantage of the Tango over the 1912H?

I see the 1912 as being more powerful and cheaper than the Tango, so is there something I've overlooked or didn't take into consideration?
Does the lower weight of the Tango help that much?
Or the better efficiency of the Tango?

Thanks very much for any elaboration! :)

Cheers,

Daniel

The 1912 as John just stated above is to much for a Logo 500. The Tango 45-10 would work nice and NEU 1910 and their are others.

The Tangos are easy on your lipos and give the best run times due to their efficiency. As for the weight savings.... it's just a little bonus.

I will have more to say when I get my canopy back and the weather is good.

I bought mine from www.espritmodel.com

[jamesotron99]

I've flown the Tango 45-10 in my Logo 500 and the Neu 1910/1Y in my Logo 10. I think I prefer the Tango, but it's hardly a fair comparison between flybarless with 550s and flybarred 500s. Also, the 1910 reliably stripped the Logo 10 maingear with each piroing inverted climbout.

[Danyboy]

John&Jeremy&James,

Thank you *very* much for that evaluation!

Never thought you could have too much power on a heli though... ;) :D

I guess I should go look for some online shops that put the correct price-sticker on it... ;)

Cheers,

Daniel

[th3tick]

First couple of flights, and I'm pretty happy. Definitely a loss in "grunt", but not enough for me to worry about. Besides that, the increase in flight time is going to really make up for it...

I'm still breaking in packs, and really, I don't fly very well, and I don't yet have a lot of data..., so take these numbers with a grain or two of appropriate seasoning.

I'm seeing expected 80% flights go from 9 minutes to around 10, perhaps 11 minutes... That's on 5350mAh EVOlite 10S packs. One more break-in flight, and time to climb...

John

[LITHIUMSTATIC]

John that's awesome news! 10 - 11 minute flight!!!! :shock::clappp Can you get some headspeeds with a tach so I have something to go off of? What throttle % are you using?

Thanks!

[th3tick]

I can actually do you one better. The attached are my eLogger runs from the two flights today. The curve I had for the first one was 70/80/85, and the second one is 60/65/70, although I'll confess never to have touched Stunt2.

There are some dropouts on the readings, which I'm hoping the update I grabbed of their software will resolve. In summary, however, I was seeing 2200/2300 for the 70/80, and about 2100/2180 for the 60/65. I'm still debating the 13T at this point, but considering how cool the ESC was, probably will stick to the 14T. I forgot the temp gun, but it wasn't anywhere near the danger-zone I was feeling with the 1912.

I'll probably go with 60/60/70 at this point, and just be happy. Still debating what I "need" at this point, but I'm in the ballpark I wanted already :thumbup:

John

EDIT: The second one shows a spool-up I did before I cranked down the %age.

[LITHIUMSTATIC]

:noteworthy John if you could put a 13 tooth pinion on a get a couple of graphs that would make me very happy.... You know you want to try it.

[th3tick]

:noteworthy John if you could put a 13 tooth pinion on a get a couple of graphs that would make me very happy.... You know you want to try it.

Nah, that would be way too much work...

13T is installed, and hopefully, time tomorrow will come available ;)

Trying to guess the right starting point for the governor... Probably go back to 70/80/85 and see how it goes. I figure if it ends up being higher, it's probably going to be even more efficient...

Thanks for the thought ;)
John

[th3tick]

So, on Kontronik's website, this motor is listed as 700KV, yet the packing and the motor itself I got are 720...

Do they test them individually, and that's the rating that came out, or is this the normal rating?

TIA,
John

[LITHIUMSTATIC]

:dontknow I'd go with what's on the motor.

[th3tick]

I guess I should have been more explicit. What's on your motor, Jeremy?

So, got two flights in today using the 13T, as described. I stuck with the same throttle curve for both flights: 70/80/85, and although I briefly went to stunt2 on flight 2, I can't really see it in the graph. It also looks like the new software fixed the recording dropouts :thumbup:

I think I'm probably going to back off to 60/70/80 for now, and see how that goes. I'm guessing I'll hit about 2000 at 60, which should be sufficient for "Normal".

Also, just to be clear, this is the VBar Logo 600, so YMMV...

John

EDIT: re-studying flight 2's graph, you actually can see where I went to 85%... It's the chunk before it goes back down to 2100RPM, and I don't think the ESC much liked 85%.

[LITHIUMSTATIC]

I think mine reads 720kv so that must be it. I will double check it and post in an hour or so as to what it reads.

I wonder how having a fly bar effects headspeed. I wouldn't think it would be much until you go really high on the headspeed. I'm guessing that with a 13 pinion and at 80% throttle I'm at about 2100.... A little higher than I thought. This puts me were I want to be for my flying style.

Are you going to stick with the 13 or move back to the 14?

Thanks for the graphs!!:thumbup:

EDIT*** It's a 720kv

[th3tick]

I really see no reason to go back to the 14T. It might give me access to higher headspeeds, but I really didn't want over 2200 at this point anyway.

Thanks for the nudge ;)

John

[LITHIUMSTATIC]

Hey John, How is the 45-07 working for you? Mine runs a tad hot... may cut a hole in my canopy for cooling.