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Mikado
Other › Logo 16 set-up etc
05-07-2005 07:45 AM  12 years agoPost 1
TomV

rrNovice

Norway

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Hi everyone;
I hope you can help a beginner with some questions about my new Logo. I've just bought a Logo 16 second-hand in mint condition (it's been carefully hoovered 10 times, thats all). I paid equivalent to $ 450, for the heli with Kontronik FUN 600-15, Kontronik Jazz 55-6-18, CF 550 mm blades and 16xGP 3300. I've got these questions:

1. I want a mild set up, for some relaxed flying at my usual glider site. I'm a bit concerned if my motor is suitable; in most set up recommendations the FUN 600 is listed as a motor for the Logo 10, not the 16. The motor has a 10 t pinion. Any views on this?

2. What flight times could I expect (w. 16 GP 3300)?

3. What's the life expectancy of the tail-belt?

4. Should I go for analog or digital servos (Graupner 4041 or 8041)? (I will use av Futaba 401 gyro w. Fu 9254 for the tail).

5. I'm going to change the vertical stab. I think it's wise not to reuse the nylock-nuts. Do I need special nylock-nuts, or may I buy them from any local shop?

6. Some years ago; the general rule with Nimhs was: A: Maximum 1 C charge rate B: Max 3 charges a day C: One hour rest after flying before a new charge. Is this still true?

This was a lot of questions; hope you can help a frustrated norwegian.

Thank you!

TomV

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05-07-2005 02:02 PM  12 years agoPost 2
TomC

rrKey Veteran

Gold Coast, Queensland, Australia

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Boy you ask a lot of questions! I fly a Logo 16 that I've since upgraded to basically a pre-2003 logo 20) so I might be able to offer you a little help.

1) Assuming you have a 138t main gear, the 10t, module 0.7 pinion should work fine. If you have the original logo 16 96t main you will need to go to an 8t module 1.0 pinion. The fun-15 motor is a bit light, but should work ok for light flight. I would install a kontronik 600 heat sink on it.

2) I would expect 6-8 minutes with this setup.

3) The belt life is very long. I'd expect 200-300 flights out of it.

4) Best servos for cyclic imo are analog Futaba 9202. Tower hobbies sells these for ~$50 each.

5) Ive never had a problems re-using these nuts. If you want extra insurance, try using a little blue loctite on them. Also, I would go for the mikado carbon fibre fins. The horiz one one hold the boom braces better and the vertical fin is a lot stronger and will help save your tail rotor blades.

6) The new GP cells can safely be charged at up to1.5C. Do not charge them below 1C for best results. You can safely recharge them as many times per day as you'd like. Just let them cool to at least body heat before recharging them (10-15 minutes).

Hope this helps and good luck with you new logo16!

Cheers,

Tom C

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05-07-2005 02:31 PM  12 years agoPost 3
Voyager

rrApprentice

Canada

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Lock nuts:

It is true that lock nuts should not be reused. The nylon should only be 'formed' once. This is for the 'perfect' grip that would be needed in a mil-spec application.

That said, I do reuse them in most locations without problems.
I ALWAYS use a new one for critical locations like main shaft bolts and tail rotor bolts.

Batteries:
Most new NiMh batteries can be safely recharged at 2 C
It may reduce the life slightly but so does discharging at the high rate that we do in heli applications.

Servos:
I don't know about the servos you listed but I would use digital servos for a heli. If you try digitals you wil probably never go back to the old analogue type. The digitals are so much 'crisper' in operation and that really shows up in a heli.

... Rob

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05-07-2005 03:10 PM  12 years agoPost 4
TomC

rrKey Veteran

Gold Coast, Queensland, Australia

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Rob, the Futaba 9202 servo uses a coreless motor (and double ball bearings). They are very reponsive, center well, have lots of grunt, and use a little less current than a digital servo.

They are the servo-of-choise at my club for 30-90 gassers (and Ion-x'ers)! Having said this, the Futaba 9250 digital servos are a bit faster and are very good servos as well.

For what it's worth, most of my club members like JR radios and Futaba servos.

Cheers,
TomC

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05-07-2005 03:29 PM  12 years agoPost 5
Voyager

rrApprentice

Canada

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TomC ,

I agree that the 9202 are great servos and expecially if you want to save power over digitals.

I had them before switching to 9252 digitals.

I think both are a good choice but the digitals hold better around the set point due to the way digitals work.

... Rob

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05-07-2005 07:40 PM  12 years agoPost 6
TomV

rrNovice

Norway

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Tank you very much for your kind assistance! Look forward to get the Logo in the air. My only heli experience so far has been 120 flights with a FP Twister (the same as Honey Bee) in an indoor gym this winter. Guess the Logo will be more stable and controllable!
Thanks again
TomV

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05-08-2005 10:44 PM  12 years agoPost 7
CustomPC

rrVeteran

Sydney, NSW - Australia

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Hi All,

Re: Carbon tail fins.

I just recieved 2 new parts from my local Logo agent. They are part numbers 2490 and 2491.

They are made from a stiff black plastic material and are the same shape and dimensions as the carbon parts and a lot stiffer then the flimsy white stock parts.

The best part was that they cost 1/3rd the price of the carbon parts.

TomC, finally all my parts have arrived. My 20 will fly this week. Can't wait.

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