belt or shaft drive tail

[Jetleaf]

I hope they're not more new words.:thumbdown:

[blade4oo]

sorry cant spell for sheet

[blade4oo]

ok when you crash you put stress on the gears the blades grips break first thin the gears at the heli not the ones on the tail thats what i was saying you got it im sorry i suck at spelling

[blade4oo]

ok and another thing you cant compare a chain to a belt a chain is more along the lines of a gear to gear being that its made of metal with bearings in the links thats y sport bikes have thim belt flex some bikes have thim but are inefficient

[Fudd]

I'm voting for shaft just because it performs better. It adds more weight to the tail but if you reposition the battery you can almost counteract this. Its not 100% perfect but its as good as the balance with a 2s battery on the lower tray and belt drive.
With the shaft being more efficient than the belt, you feel the extra power more than the weight it adds. A good way to demonstrate the efficiency of the shaft is by turning the tail blades by hand. It probably takes half the effort to turn the shaft than the belt.
The only other concern is with the cost of upgrading to the shaft and the cost of subsequent crashes. The standard shaft upgrade kit can be had for $55. This includes a frame piece and main gear with bearing which are unneccesary for the conversion and you also get a new tail case which is 3mm wider than the belt version. Alternatively, you can get the shaft, pinion, boom, tail shaft and crown gear for $16. Then turn your main gear upside down and add washers or spacers to the tail case to make it wider - SD kit for less than $20 :thumbup:.

[Gr4yb3ard]

Blade400,

All things being equal, the reason the forward gears break more often is that they see the torque of the tail rotor plus the rotational moment of the shaft, bearings and gears.

What's the CAD package you're running?

Gr4yb3ard
"...an error has occurred, ID10T..."

[blade4oo]

Blade400,

All things being equal, the reason the forward gears break more often is that they see the torque of the tail rotor plus the rotational moment of the shaft, bearings and gears.

What's the CAD package you're running?

Gr4yb3ard
"...an error has occurred, ID10T..."

it one that MAZAK gave us ill get the name im not to sure but it being new to us my boss
has been letting me play :D i dident even thank about that it make sence
i was starting to think more allong the lines of the metal vs the plastic gears in the forward part of the setup

but i cant wait to cnc me up some gears to work with other tail speeds maybe even trying some new plastics or maybe metals but i have to get the 200 first :( 1 maybe 2 weeks:roll:

[Fudd]

It was a nice calm day today so I had the perfect opportunity to crash test the sd tail. Not once but twice :lol:.
The first crash was rather light - landed sideways in longish grass - bent blade grip screw and one of the plastic links popped off the tail blade holder.
I replaced the screw and popped the tail link back on. Two packs later my confidence had returned and I was ready for another crash. This time I was doing ff. Things got out of control and I tried to get the heli tail in to save it but it was too late. The heli was turning as it hit the ground, the tail touched first, then the main blades. One of the main blades was bent up about an inch at the tip, The usual blade holder screws were bent but the tail was relatively unscathed. This time both plastic links had popped off the tail blade holders and that was it.
I'd rate this as a heavier crash than normal and I was expecting to be fitting a new crown gear. Not the case.
I just wish the links would pop off the see saw arms as easily when crashing :DOH.

[mjr_larkin]

I experienced a crash the other day with the belt drive. Decided to repair it with a shaft drive which I just finished installing. I'll report back when this gaui gets a flight. I will return to the scene of the crime for a direct comparison of performance.

p.s. is the mainshaft/pinion area a bit noisier with SD than with belt for you guys?

[goldslinger]

I'm going with the belt, unless someone can say that the Shaft Drive doesn't break EVERY SINGLE TIME in a strike.