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Logo 700xx › Logo 700 drive train effiency in Auto's
01-26-2013 02:21 AM  4 years agoPost 1
Bugcatcher

rrApprentice

Perth, Australia

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Hi all,

Just checking how people are finding the L700 in auto's?

Mine seems to decay the headspeed quite easily, incomparision to my other heli's anyway, and I can only attribute it to the belt/TT system. Possibly some effiency is lost in the one way as well.
Once the head speed comes down it is very hard speed them up again through the flare.

I find flying L800 the same.

Are there any tricks that people are doing to get the tail system a little smoother or more effient or without as much drag?

Thanks,

Andy.

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01-26-2013 04:50 AM  4 years agoPost 2
Qrrambero

rrKey Veteran

San Francisco / Bay Area

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My friend has had the same problem doing autos with the Logo 700 and he is very good doing them. He claims that the T-Rex 700 is better doing Autos
He has had few close calls.

Ae

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01-26-2013 12:59 PM  4 years agoPost 3
johnnie eagle

rrApprentice

Florham Park, NJ 07932

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I always do about 5 standard autos at the end of each flight with all of my helis. I haven't noticed any bad tendencies but I'm doing either 180 or straight in autos and I'm not dicking around on the way down. Just a controlled steady auto.

Team Minicopter - Peak Aircraft, Team Kontronik USA

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01-26-2013 02:15 PM  4 years agoPost 4
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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I used my Logo 800 in auto contests because I could get it to hold after the flare forever. Maybe you need to take a deeper decent into the flare to get more HS when you do flare?

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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01-26-2013 03:40 PM  4 years agoPost 5
rexxigpilot

rrProfessor

Florida

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Perhaps you got some epoxy in one of the bearings while assembling the torque tube. It's easier to do than you think. Ask me how I know. How freely does it spin when it is removed from the rest of the drive train?

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01-26-2013 11:40 PM  4 years agoPost 6
BobOD

rrElite Veteran

New York- USA

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Make sure the belt isn't too tight or loose. Is it rubbing on anything?

Team POP Secret

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01-27-2013 12:11 AM  4 years agoPost 7
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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Bob, obviously you have never owned a Logo 700 or 800. Please stop trolling and offering "advice" that is useless

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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01-27-2013 12:15 AM  4 years agoPost 8
Solmanbandit

rrElite Veteran

Tucson , AZ

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I can only attribute it to the belt/TT system.
I doubt it. I have a TT on my Trex 600 and autos very well.

Trex 700E / Trex 500 ESP - Ikon/ HD 500 - Ikon 2/ Goblin 500 Ikon 2

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01-27-2013 01:19 AM  4 years agoPost 9
Bugcatcher

rrApprentice

Perth, Australia

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Thanks everyone for their responses.

BobOD, the belt tension on the L700 is fixed with no option for adjustment with no possible way of rubbing. It is tight atm but I am told this deliberate though I am hoping it will loosen with more flights.

Solmanbandit, unfortunately you cannot compare a Trex TT to the Logo Xxtremes TT as they have a completely different setup. The Logo's have a belt off a secondary main gear which then drives the TT bevel gears so there is extra components that the Trex's don't have.

Rexxigpilot, definately not an epoxy problem. During the cure of the expoxy I would constantly turn the bearings every couple of minutes to make sure there was nothing binding. was very flree when the TT went in. A Xxtreme 800 that I fly was built by someone else and has the same issue.

The only way I can get the L700 to auto well is to increase my decent rate, flare hard and yes it does have a bit of hang time. But if I wish to say float for a bit up high, once the blades decay as the should tying to hold altitude, it's very hard to get energy back in them and spool them up again.

I actually rate it the same lower as my 600 heli's in auto ability. My D3 and Logo600 i've flown auto way better, I can do acrobatic auto's with them easy and always get the head speed back up. Been trying to find some video's of the pro's doing auto's on the Xxtreme's to compare but none really do the big acrobatic ones, mostly inverted coming in fast and with a piro flip flare.

Thanks,

Andy

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01-27-2013 01:30 AM  4 years agoPost 10
BobOD

rrElite Veteran

New York- USA

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Yeah, Bugcatcher, I know it's fixed but figure it's worth a check. No two things in this world are identical so there will be some variation. You're right, it should loosen slightly with time. Probably best that it starts out tight as all belts will loosen some with time.
Cool username BTW, I love bloodstains on my mains.

Oh and BTW, the Trex is two stage as well, only diff. is that they're both gears.

Team POP Secret

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01-27-2013 01:34 AM  4 years agoPost 11
Solmanbandit

rrElite Veteran

Tucson , AZ

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Solmanbandit, unfortunately you cannot compare a Trex TT to the Logo Xxtremes TT as they have a completely different setup.
After reading it again, I believe I misread the meaning in what was said.

Trex 700E / Trex 500 ESP - Ikon/ HD 500 - Ikon 2/ Goblin 500 Ikon 2

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01-27-2013 01:48 AM  4 years agoPost 12
SGrim80

rrVeteran

Lehigh Valley, PA

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The Logo 700 uses a torque tube NOT a belt so there is certainly no "belt tension" to check. Unless you are talking about the drive belt for the TT.

Mikado USA
Team Scorpion!

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01-27-2013 05:56 AM  4 years agoPost 13
TomC

rrKey Veteran

Gold Coast, Queensland, Australia

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Yes, I am sure he means the main/TT belt. A very good idea to help smooth hard/high powered systems but maybe not quite as eff? Also, I do not like that these belts are fixed (non-adjustable) so you cannot adjust them for temp/wear.

Saw an 800 extreme auto a few times a couple of months ago and I did not think it floated down any better than most 700 helis.

Cheers,
TomC

Nqx,Mcpx-BL,300x,450x,500x,550x
Ion-x, 10s ,SS
TT X50E 10s, HC3-Sx

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01-27-2013 02:40 PM  4 years agoPost 14
johnnie eagle

rrApprentice

Florham Park, NJ 07932

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I don't see what the problem is. My 700 autos great, with plenty left at the end, my friend does inverted autos and flips it over and plants it with no problems. I don't see where there is an issue....

Team Minicopter - Peak Aircraft, Team Kontronik USA

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01-27-2013 07:48 PM  4 years agoPost 15
Futura SE

rrKey Veteran

Fayetteville, Arkansas

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The L700 autos GREAT!!! As soon as the weather permits I'll shoot some GoPro hat mounted video for you guys. I can do more with L700 in auto than I can a TDR and I owned and flew a TDR for almost 2 years.

The L700 I can build up more head speed than a TDR. That big head DOES have it's advantages.

The drive train drag is ZERO issue with L700.

I love me some inverted autos. I have TONS of reserve after flipping out at bottom of auto.

All the size and weight does have it's advantages if you know how to use it.

I imagine the L800 must have GOBS of hang time after flying my L700.

Norman Ros Jr.

Team Mikado USA -- Team Insane Canopy -- Team Scorpion -- Team Evo Power Batteries

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01-28-2013 01:51 AM  4 years agoPost 16
Bugcatcher

rrApprentice

Perth, Australia

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Thanks again for everyones input.

Again i'm not talking about big inverted auto's where bring it in really fast use loads of momentum to build up headspeed then flip it over late. We've all seen the L700 do that.

I'm talking aerobatic auto's where you float to near blade stop. Build the headspeed back up with in a few seconds piroflip over slow it up again to within 20m of the deck then build the headspeed again enough to land with hang time.

You just have to look at how fast the blades stop spining after the auto. The L700/800 slows/stops 10-15sec after while my D3 will spin there for twice as long. There is a definate drag on the drive train. Again it's not just mine i'm refencing.

Don't get my wrong, i love the way my L700 fly's GOBS of power to do what I want. I'm just thinking if there was a way of reducing the drag on the drive train no only would it better in auto's but also have even more power and prob get a bit more flight time as well.

The belt/TT combo does have it's advantage through. I have touched the tail a couple times and even through I've take my tail blades out there hasn't been any damage to the TT gears so the belt does help there.

I put the challenge to guys out there, whats you minimum bailout height you can get with the L700? What I mean is float the heli down as slow a decent as possible without blade stopping. At what atlitude do you have to bailout and drop the stick to build up headspeed enough flare and land comfortably. For me on others heli's that would be under 10m. On the L700 that figure would be a lot higher. Try it! ;-)

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01-29-2013 12:03 AM  4 years agoPost 17
NTM

rrVeteran

Lloydminster, Alberta, Canada

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I think you're simply noticing the effects of high disk loading...

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01-31-2013 02:19 AM  4 years agoPost 18
RyanW

rrKey Veteran

Edmond, Oklahoma

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I love aerobatic autos and am also keen to see how the 700 does. I am not a fan of coming into a push-over or roll out auto at Mach 2.5, spin the headspeed up to 3k and get it on the ground.

I was surprised at a fun fly a few months ago in Texas when I had at least two people mention how they like the "smooth and slow" auto. I didn't realize it was slow, but I guess it is compared to autos today.

This is my speed- it is my Avro almost five years ago. Video is crappy as is the flying, but fast forward to 2:55 and see a short, but nice clean rolling auto.

-Ryan
Mikado USA, Kontronik, Opti-Power, MKS Servos

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Logo 700xx › Logo 700 drive train effiency in Auto's
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