New Prôtos 700 pictures! - Page 2

trickybit · 09-30-2012, 11:08 PM

Quote:

Originally Posted by banditpowdercoat

Bigger tail gear SLOWS the tail....

Yeah, unless they used the elevated tail shaft to put some extra long tail blades on, they tail will have to spin as fast as a comparable heli, in which case, that belt is going to be FLYING in the tube.

banditpowdercoat · 10-01-2012, 01:39 AM

Quote:

Originally Posted by trickybit

Yeah, unless they used the elevated tail shaft to put some extra long tail blades on, they tail will have to spin as fast as a comparable heli, in which case, that belt is going to be FLYING in the tube.

Not following you?? Longer tail blades would be slower for same force. And the belt only goes as fast as your HS dictates. Im pretty sure belt speed isnt an issue. Look at belt driven 450's spining 3500+RPM

trickybit · 10-01-2012, 02:09 AM

Quote:

Originally Posted by banditpowdercoat

Not following you?? Longer tail blades would be slower for same force. And the belt only goes as fast as your HS dictates. Im pretty sure belt speed isnt an issue. Look at belt driven 450's spining 3500+RPM

With, say, twice as many teeth on the tail gear, the belt has to move twice as fast, linearly, to spin the tail rotor at a given speed. So compared to other belted-tail 700s, this huge belt will be moving twice as fast as normal (assuming tail rotor speed is the same).

With longer blades (enabled perhaps by the tail being raised), they could maintain tail authority with slower tail RPM. This would mean they could gear the ratio between the headspeed and that tail shaft 'differently," to move less belt.

The headspeed only determines the belt "speed" by virtue of the belt drive gearing.

In a fast 450 @ 3500, the tail rotor gear is very small. Half as many teeth would rotate twice as fast for same belt speed. I don't know the ratios of a 450, and while interesting, it's not direct comparison to other 700s and large belt-drive helis.

banditpowdercoat · 10-01-2012, 02:24 AM

Ya OK I get ya. But also know, the faster a belt moves around a pulley, the less friction it has. Its why Belt helis are really efficient when spooled up, yet don't spin as free as a TT when spun slow, like by hand. The faster a belt moves around the pulley, it gets thrown off it, so to speak, and acctually has less tension on the pulley, yet is tighter in the boom. That's why we need cogged belts, to ensure tooth engagement with the pulley. Larger pulley will also flex the belt less, resulting in even less rolling friction.

My B400 tail pulley was worn, teeth were almost smooth. At a 2700RPM, I could do tic tocs FBF, etc etc no issues, But ramp to 3200, and the belt was flying off the pulley and loosing contact. Tail blow outs everywhere, even on a lot lesser demanding moves. Small pulley, less teeth in contact and more centripital force pulling belt off pulley at speed

kavic5150 · 10-01-2012, 03:21 AM

If I get a P700 I want a hacker motor to go with it. Only makes sense, what with the purple canopy and all.

Dr. M · 10-01-2012, 06:09 AM

IMHO, the most efficient way to get more tail authority is to spin it faster. Bigger blades will sap too much power and tend to stall sooner. It would be relatively easy to bring up the tail gear ratio above 4.75 by making the tail drive pulley a few teeth smaller.

vs0587 · 10-01-2012, 06:16 AM

Alpine Heli Smack Down 2012

3 photos taken Sunday:

rossk · 10-01-2012, 08:39 AM

Quote:

Originally Posted by vs0587

Alpine Heli Smack Down 2012

3 photos taken Sunday:

They are great looking photos, good job on the photography skills.
There is a vid coming from corrado in the brain forum..

vs0587 · 10-01-2012, 08:42 AM

Quote:

Originally Posted by rossk

They are great looking photos, good job on the photography skills.
There is a vid coming from corrado in the brain forum..

Thank you!

rossk · 10-01-2012, 08:56 AM

Quote:

Originally Posted by vs0587

Thank you!

So you are the photographer?
I have a hard enough time getting the heli in the shot, let alone looking as great as those!
I'm guessing there are a lot of shots on the cutting room floor?

vs0587 · 10-01-2012, 09:07 AM

Quote:

Originally Posted by rossk

So you are the photographer?
I have a hard enough time getting the heli in the shot, let alone looking as great as those!
I'm guessing there are a lot of shots on the cutting room floor?

Yes, i'm the photographer..

Yesterday i took about 700 photos.... many are out of focus and discarded, caused by very fast movement of heli..

What do you mean with "I'm guessing there are a lot of shots on the cutting room floor?"
i don't understand, my english isn't very good...

kjoer · 10-01-2012, 09:29 AM

Vid recorded by Iwan, a Dutch guy, thanks dude!

banditpowdercoat · 10-01-2012, 09:51 AM

Quote:

Originally Posted by vs0587

Yes, i'm the photographer..

Yesterday i took about 700 photos.... many are out of focus and discarded, caused by very fast movement of heli..

What do you mean with "I'm guessing there are a lot of shots on the cutting room floor?"
i don't understand, my english isn't very good...

It's a saying here in the west. Meaning the shots you discarded. Back form the days of film photography. After all the shots were developed, the ones that were no good, would end up on the floor. Discarded. Cutting room, was the room they would cut the photos to size, and discard the junk ones on the floor

vteknical · 10-01-2012, 10:35 AM

Not blown away as I had hoped to be. It's getting harder and harder to re-invent the wheel.

HighFreq · 10-01-2012, 10:50 AM

That was Tareq 1st fly on the Protos 700, more "aggressive" flying from him and Dario are coming hopefully later tonight on the tube

Corrado

mahbouni · 10-01-2012, 01:39 PM

Sounded like about 2150rpm. Crank that up to 2300rpm and it will rip.

puttekula · 10-01-2012, 01:56 PM

Never mind what HS in this movie. Speed it up like in BKs commersials and it will ripp ur ass of. Hands down ,I will buy it when its available...
BTW, when can I send my money to Italy?

drvic · 10-01-2012, 03:09 PM

so if you are interested for some more video of P700 , we got some ....
http://www.flyfreak.net/helikopteri/...eli-smackdown/

looking forwerd for preodres....

meltdown · 10-01-2012, 03:43 PM

I was yesterday in lodrino and here is small video of protos 700, I shot a little because I just had to watch it in live, heli is the beast is too good, fast, agile, and power,

helicopter going in my collection that's for sure, because when I heard only the sound, I was impressed, heli earned the highest grades in my opinion!

I hope I helped

YouTube

meltdown · 10-01-2012, 03:58 PM

10-01-2012, 02:24 AM	#24
banditpowdercoat Registered Users My HF Map location Join Date: Sep 2010 Location: 100 Mile House BC Canada	Ya OK I get ya. But also know, the faster a belt moves around a pulley, the less friction it has. Its why Belt helis are really efficient when spooled up, yet don't spin as free as a TT when spun slow, like by hand. The faster a belt moves around the pulley, it gets thrown off it, so to speak, and acctually has less tension on the pulley, yet is tighter in the boom. That's why we need cogged belts, to ensure tooth engagement with the pulley. Larger pulley will also flex the belt less, resulting in even less rolling friction. My B400 tail pulley was worn, teeth were almost smooth. At a 2700RPM, I could do tic tocs FBF, etc etc no issues, But ramp to 3200, and the belt was flying off the pulley and loosing contact. Tail blow outs everywhere, even on a lot lesser demanding moves. Small pulley, less teeth in contact and more centripital force pulling belt off pulley at speed __________________ Dan Pesonen FBL, Don't think about it, DO IT. mCX2, nCPX, mCP X, Blade 400, MSH PRÔTOS "Tri-Flow" I put that S*** on everything!"

10-01-2012, 03:21 AM	#25
kavic5150 Registered Users Join Date: Jan 2010 Location: US, east coast	If I get a P700 I want a hacker motor to go with it. Only makes sense, what with the purple canopy and all. __________________ Hoss X4e 6s, Gaui 550, Protos 500 12s, Losi Speed-T. Save the flybar !!

10-01-2012, 06:09 AM	#26
Dr. M Registered Users My HF Map location Join Date: Jun 2011 Location: Seattle Area, East Side	IMHO, the most efficient way to get more tail authority is to spin it faster. Bigger blades will sap too much power and tend to stall sooner. It would be relatively easy to bring up the tail gear ratio above 4.75 by making the tail drive pulley a few teeth smaller. __________________ Fly first ask questions later. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. CopterX 450 Black Angel FBL "Night Rig" \| ZYX v4.0 MSH PRÔTOS 500 FBL "Sky Whip" \| ZYX v4.0 Audacity P6 FBL "Phoenix" \| MSH Brain \| 12s e-conversion

10-01-2012, 09:29 AM	#32
kjoer Registered Users Join Date: Sep 2011 Location: Venlo, The Netherlands	Vid recorded by Iwan, a Dutch guy, thanks dude! __________________ http://www.xs4all.nl/~rzavelli/rc_heli.txt Last edited by kjoer; 10-01-2012 at 10:49 AM..

10-01-2012, 10:35 AM	#34
vteknical Registered Users My HF Map location Join Date: Mar 2007 Location: Mt. Prospect	Not blown away as I had hoped to be. It's getting harder and harder to re-invent the wheel. __________________ The bitterness of poor quality, lingers long after the cheap price is forgotten. Buy the best and only cry once!

10-01-2012, 06:16 AM	#27
vs0587 Registered Users Join Date: Jul 2010 Location: Saronno, Italy	Alpine Heli Smack Down 2012 3 photos taken Sunday:

10-01-2012, 10:50 AM	#35
HighFreq Registered Users Join Date: May 2004 Location: Italy	That was Tareq 1st fly on the Protos 700, more "aggressive" flying from him and Dario are coming hopefully later tonight on the tube Corrado __________________ To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

10-01-2012, 01:39 PM	#36
mahbouni Registered Users Join Date: Jan 2007 Location: London	Sounded like about 2150rpm. Crank that up to 2300rpm and it will rip. __________________ Logo 700 Synergy E7 Logo 600 Logo 500 Protos 500 Mini Protos

10-01-2012, 01:56 PM	#37
puttekula Registered Users Join Date: Jun 2011 Location: Sweden	Never mind what HS in this movie. Speed it up like in BKs commersials and it will ripp ur ass of. Hands down ,I will buy it when its available... BTW, when can I send my money to Italy?

10-01-2012, 03:09 PM	#38
drvic Registered Users Join Date: Dec 2011 Location: croatia ,	so if you are interested for some more video of P700 , we got some .... http://www.flyfreak.net/helikopteri/...eli-smackdown/ looking forwerd for preodres....

10-01-2012, 03:58 PM	#40
meltdown Registered Users Join Date: Aug 2012 Location: Lugano, Zadar

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