belt or shaft drive tail

[blade4oo]

what do you think

[mmtecg]

Thank? I love new words.

[blade4oo]

think lol sorry
ok fixed cant spell for poo lol

[FlyawayClyde]

There is a choice?????

[blade4oo]

ya the 200se belt or the 200sd shaft

http://flying-hobby.com/catalog/index.php?cPath=3_5_169


i just learned that to lol

[rotorhead58d]

hey, who voted for the shaft? >:(

[blade4oo]

you dont like the shift rotorhead

[stoatnchips]

you dont like the shift rotorhead

Yo Blade.... there is a 'preview post' button.. you're the master of new words at the mo...:tongue

[Jetleaf]

I voted shaft, cause I just got one. :YeaBaby:

[crabfu]

I've never had a shaft drive, only had experience with belt drives. Shaft drives makes a lot of sense, a lot more efficient transfer of energy. But what I've heard is that on the small helis, they easily strip gears when you scrape the tail.... previous mini helis with torque tube were switched to belt for that reason. Then again I've also had belts fray and snap, which isn't good either.

I don't feel that I can vote on this issue, because I have had zero experience with shaft drives in a heli. Mostly I am content using belt, until something better comes along... but only after something is proven indeed better. Until enough people start flying the sd, I don't think it's fair to say which is better for the hobbyist in the long run. As far as which "works" better, I'd guess the torque tube shaft tail. But at this point, belt works for me at my level, and at this level, I need something that is as durable as possible for my brain farts. I've crashed too many times on the gaui, even snapped the aluminum boom in half once, never once have I broken a belt, or had it bind or slip :)

-Crabfu

[stoatnchips]

I'm with you the crabfu... can't comment on the 200 coz i just don't have the experience... but in the past i flew a Concept 30 and Hirobo shuttle zx... the belt drive of the zx was much better than the shaft of the kyosho!!!

[bjosko]

I can't vote yet, ordered a shaft drive upgrade from RH yesterday, and will report back, and vote when I got it, and installed in my 200.

I am curious about how it will affect the current draw and CoG, and of course how it will survive some of my *UPS* landings .... :DOH

[tye]

I vote for belt base on the experience of SD in Shoguns. People were paying extra to upgrade to belt drive because of the fagile tail gears. Not even talking about crashes, just hard landings will destory the tail gears. Hope it's better with the 200. Seems they plan on phrase out the belt drive. In RH the belt drive kit is not longer available.

[SurfCity]

Shaft drives makes a lot of sense, a lot more efficient transfer of energy.

I'm not so sure about this. It's heavier, and the energy travels through a 90-degree change of direction twice. A belt is lighter and transfers its energy directly. The only inefficiency would be if there's slop or tightness in the belt.

For years I rode BMW motorcycles, which have shaft drives. They're quiet, clean and carefree, but they're also heavy and eat about five horsepower. The lightest, fastest motorcycles all use chains. Same reason.

[JaggedEdge]

Learning: belt.
Decent flyer: shaft.

[JaggedEdge]

I'm not so sure about this. It's heavier, and the energy travels through a 90-degree change of direction twice. A belt is lighter and transfers its energy directly. The only inefficiency would be if there's slop or tightness in the belt.

For years I rode BMW motorcycles, which have shaft drives. They're quiet, clean and carefree, but they're also heavy and eat about five horsepower. The lightest, fastest motorcycles all use chains. Same reason.

Wrap a rubber band around 2 pinions and put enough tension on it.
Waaay more drag then properly meshed gears.

Or watch the T500 TT conversion video finless did. He spins up the mains by hand and the blades spin with noticeably less drag.

[northcarolinadan]

i went with belt drive, because some days i dont fly to well.....:DOH

[jimgrant]

"Wrap a rubber band around 2 pinions and put enough tension on it.
Waaay more drag then properly meshed gears. "

but there isn't the same tension on a toothed belt, cos its the teeth that are driving the pulleys, not tension

[SurfCity]

there isn't the same tension on a toothed belt, cos it's the teeth that are driving the pulleys, not tension

Exactly, same as a chain. That said, I'm definitely not an engineer, and many other factors are also in play (i.e.: vibration, balance, rotating mass, etc.), and given the high power-to-weight ratio of this tiny heli, it may all be moot anyway.

[flykarifi]

I have Raptor 50 (belt) and R 90 (shaft) drive.
Both works very well.
But I like shaft drive more because I fly also in winter (below 0 degrees celsius) and you do not need to adjust anything before flying.
Belt is getting very loose in cold weather.

My Gaui is belt because it was only option when I bought it.
Gaui is so small that it is not wise to fly it under 0 degrees C.

[bjosko]

I'm not so sure about this. It's heavier, and the energy travels through a 90-degree change of direction twice. A belt is lighter and transfers its energy directly. The only inefficiency would be if there's slop or tightness in the belt.

For years I rode BMW motorcycles, which have shaft drives. They're quiet, clean and carefree, but they're also heavy and eat about five horsepower. The lightest, fastest motorcycles all use chains. Same reason.

Well, i think it cost less effect to deliver the power to the back wheel, or the tail in this case.
Yes, you lost more effect than with a rubber band directly on the tail, but remember that opposite to your BMW (BTW I am driving a Honda with shaft drive, and a Ducati with chain ;)), the main effect should stay at the head rotor.

But lets see when i got mine. I know that with plasticblades, I use around 100 mah pr. minute with belt driven tail in normal FF and hover.

There must be a reason that the T Rex N600 Pro are with Torque tail, and it is also a hot wanna-have upgrade for many on the T Rex 500.

[JaggedEdge]

Exactly, same as a chain. That said, I'm definitely not an engineer, and many other factors are also in play (i.e.: vibration, balance, rotating mass, etc.), and given the high power-to-weight ratio of this tiny heli, it may all be moot anyway.

a gear is 1 tooth pushing on 1 tooth at a time (x2 for each end of the boom).
A belt is wrapped around half a pulley on each end AND under tension.

[rotorhead58d]

a gear is 1 tooth pushing on 1 tooth at a time (x2 for each end of the boom).
A belt is wrapped around half a pulley on each end AND under tension.

so, the head on the shaft drive should spin longer, than the belt drive. test time.

[blade4oo]

ive been working on a C.A.D program at work for the past 4 or 5 hours the belt was showing a loss of power the entire time that the motor was runing the shaft the only loss it showed was at start up and actually helped the heli with power in flight because of the rotating mass but the event of a crash when fource is applied to the tail the first thing to break was the tail blade grips then the shaft gears at the heli not at the tail for what reason the gears stiped at the heli not the tail good Q i dont know
but the shaft in the tail actually made the tail strounger in the event of a tail crash at speeds of 15-to-30 mph
i love this program i can kill a heli with out even flying the little guy lol

[SurfCity]

the low in a crash win fource was aplied to the tail the first thing to brake was the tail blade grips thin the shaft gears at the heli not at the tail for what reason the gears stiped at the heli not the tail good Q i dont know

I'm trying to decipher your sentence here. "The ___ in a crash ___ force was applied to the tail. The first thing to break were the tail blade grips, then the shaft gears at the heli, not at the tail; for what reason the gears stripped at the heli, not the tail, good question; I don't know.

I'd like to understand you. What are the missing words?