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09-16-2009 12:40 AM  11 years ago
LonR

rrElite Veteran

Macomb,Mi

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BTW,its the boom that shrinks going from hot to cold not the belt.Rubber don't shrink,metal does thats why some people run a CF boom during winter.600LE,OS55,OS PowerBoost pipe,Align 610's,Spartan
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09-16-2009 12:41 AM  11 years ago
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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Thanks for the info Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!
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09-16-2009 01:22 AM  11 years ago
helical

rrApprentice

Bowling Green, KY

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Well I'll tell my story based on my experience...

I have a 600n sport that I flew with a belt for over 2yrs. I was very happy with it until I started getting into a lot of piro flying. I upgraded to a spartan gyro because the 401's piro consistancy sucks. With the spartan my piro rate was also inconsistant in piro flips and piro flying. I tried adjusting the gyro, tightening the belt (very tight), upgrading the boom clamp to metal, supporting the tail control rod better, changing the spartan with another one, and changing the servo...all with no improvement. I then changed to a torque tube and with no other changes immediately noticed a difference. The piro rate is now very consistant.

I do believe that the belt constantly loads and unloads during flight and a "more advanced" pilot will notice this in piro manuevers.

For me, I'll never own another 50-sized+ nitro with a belt. However in the past they served me just fine (well into backwards flight) until my flying level increased to piro flying.

Do belts work well on larger electrics?? I can't comment as I've never had an electric larger than a 500.
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09-16-2009 01:45 AM  11 years ago
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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Do belts work well on larger electrics?? I can't comment as I've never had an electric larger than a 500
Absolutely!

Both belt driven and awesome!!!
Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!
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09-16-2009 03:40 AM  11 years ago
LonR

rrElite Veteran

Macomb,Mi

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So how can a belt not be consistant on a nitro and it is on a electric when you can bog both the same and put a load on both the same .Im running a JR G770 3D gyro/DS8900G tail servo,its not a top of the line gyro but its very consistant in every way.Just like one guy said about the tail blowing out cause it has a belt,I have a ton of videos of me doing fast backwards hurricanes,funnles and 200+ ft tail slides and never had a tail blow out.consistant piros in winds and im just getting the hang of piro flips,the tail is consistant but my timming is not haha.No argueing about this,just trying to understand thats all.600LE,OS55,OS PowerBoost pipe,Align 610's,Spartan
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09-16-2009 09:00 PM  11 years ago
chopper_crazy

rrElite Veteran

Delphos, Ohio

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I personally don't have a preference. I do notice on the electric machines, that the torque tube is a little more efficient but if you crash a lot, it just an added expense.It's a complex, costly, glow powered anti-gravity machine!
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09-17-2009 12:48 AM  11 years ago
pgoelz

rrVeteran

Rochester MI

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Before you can compare the flight characteristics of belt vs. TT you need to take into consideration any difference in main rotor vs. tail rotor RPM. Just changing from belt to TT doesn't mean the tail rotor is turning the same speed for a given head speed.

Paul
Paul Goelz
Rochester MI USA
http://www.pgoelz.com
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09-17-2009 12:51 AM  11 years ago
helical

rrApprentice

Bowling Green, KY

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Just changing from belt to TT doesn't mean the tail rotor is turning the same speed for a given head speed.
Excellent point. Not sure if the torque tube increases/decreases the tail rotor rpm verus the belt on a 600n.
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09-17-2009 01:43 AM  11 years ago
McKrackin

rrProfessor

Lucasville,Ohio

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Just changing from belt to TT doesn't mean the tail rotor is turning the same speed for a given head speed.
I don't know about all machines but that is something I actually looked at on my 500's.

On the belt driven tail,the pulley on both ends looks to be the same size so the ratio is 1:1.
On the TT machine,the umbrella gear on both ends is the same so that ratio is 1:1 and the gear on the tail shaft has the same number of toofs as the umbrella gear so that ratio is 1:1.

The drive gear on both machines is identicle.

Someone remind me of the final ratio please.
Is it 4.7:1?
I literally never use the word literally right.
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