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Gaui EP200 › What's up with my 200?
07-10-2008 02:53 PM  9 years agoPost 1
vfastr6

rrVeteran

Cape Town, RSA

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I can't seem to get more than 2000rpm out of my 200....

It's got the stock 4800 motor with 15 tooth pinion and 2S. At ID1 with zero at mid stick and throttle curve at 90% I get just a few rpm shy of 2000 rpm, no more.

This seems to be theoretically wrong.

ASAIK the main gear is 120 tooth, giving a gear ratio of 8:1, which at 7.4 volts should give a theoretical 4400 headspeed.

By default I think that the ESC is setup for LiPo and Heli with Gov. Is this the best way to run or should one run without the Gov mode enabled?

Thanks in advance
Marc

I'd Rather Be Flying But I Have To Work to Pay For my Crashes!

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07-10-2008 08:56 PM  9 years agoPost 2
Pro Piccolo

rrNovice

Germany

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Yes, try the normal heli mode with soft start on the ESC (no governor)!

Michael

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07-11-2008 06:14 AM  9 years agoPost 3
Jetleaf

rrApprentice

Concord, N.C. -​U.S.A.

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Yeah if you haven't programmed the esc do it. These things can come programmed different ways so I have discovered. 90% you should be seeing 4000+. Also check the motor to esc wiring and your battery connection/solder joints.

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07-11-2008 08:19 AM  9 years agoPost 4
vfastr6

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Cape Town, RSA

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Thanks guys.

Not being much of an "electric" pilot I am used to a mechanical throttle - when the barrel is open half-way you are usually at hovering speed......

I'll change the ESC today and give some feedback.

Marc

I'd Rather Be Flying But I Have To Work to Pay For my Crashes!

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07-11-2008 02:22 PM  9 years agoPost 5
vfastr6

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Cape Town, RSA

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Done all the tests and I am still SAD

I tried all different programming options on the ESC (every combo!) and the head speed still stays the same wether at 80% or even as high up as 95%........

What could the (my) problem be? Could the ESC be faulty perhaps?

I'd Rather Be Flying But I Have To Work to Pay For my Crashes!

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07-11-2008 07:06 PM  9 years agoPost 6
Drunk Monk

rrProfessor

Preston, UK

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In my idle up I have 100% flat curve and the thing screams


Stephen

I only open my mouth to change feet.....

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07-12-2008 05:56 AM  9 years agoPost 7
Jetleaf

rrApprentice

Concord, N.C. -​U.S.A.

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First does the head spin freely? Any binding at all? Does the esc get hot? What radio equip. are you using? What are your curves, all of them?
And what battery are you using, you said 2s but what capacity?

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07-12-2008 08:25 AM  9 years agoPost 8
vfastr6

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Cape Town, RSA

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Everything is very freemoving - the links are loose, the head spins freely - can't feel anything to tight nothing.

The ESC doesn't get too hot, neither the battery, which is a 800mah battery. Even with it fully charged, the headspeed is still low.

On the 9X, the curves are as follows:
Pitch curve (N) is 40 65 90
Throttle (N) 0 75 85 xx xx 100

I'm not sure what the ID 1 and 2 curves were, pitch wise they are both -10 0 +10. I tried 100% 90% 100% with the ID 1 throttle curve, but got the same result.....

I'd Rather Be Flying But I Have To Work to Pay For my Crashes!

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07-12-2008 09:53 AM  9 years agoPost 9
Mikej

rrNovice

UK

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Are you only using the one battery or do you have a number of them ? May be a battery issue ????

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07-13-2008 04:55 AM  9 years agoPost 10
Jetleaf

rrApprentice

Concord, N.C. -​U.S.A.

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On your ESC are you using the connectors that came on it, the ones that go to the motor? If so try changing them to bullets or just solder the wires. The ones that come on it are servo pins and pretty wimpy, you could also have a bad solder joint on these same connectors. Oh and make sure your wiring or anything isn't rubbing the motor. Check your pinion and make sure it isn't slipping on the motor shaft.

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07-14-2008 03:16 PM  9 years agoPost 11
phattalon

rrApprentice

Muncie In

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I would bet that it is the pinion. I was flying mine last night and the pinion spun on the motor shaft.

Jason Russell

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07-14-2008 05:47 PM  9 years agoPost 12
vfastr6

rrVeteran

Cape Town, RSA

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Jason - you are spot on the money!!!!

Thanks for that. I took the motor out and saw the same thing as you!

Never to old to learn.

How would you get ot tight again? Red loctite, metal epoxy?

Thanks
Marc

I'd Rather Be Flying But I Have To Work to Pay For my Crashes!

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07-14-2008 09:03 PM  9 years agoPost 13
Jetleaf

rrApprentice

Concord, N.C. -​U.S.A.

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I was spot on the money too. CA works great for the pinion. Your welcome.

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07-14-2008 11:43 PM  9 years agoPost 14
phattalon

rrApprentice

Muncie In

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green loctite works good.

Jason Russell

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Gaui EP200 › What's up with my 200?
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