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HelicopterHIROBOOther › Another Stupid question
06-04-2004 08:09 PM  13 years agoPost 1
Helinutnz

rrElite Veteran

below 42 South

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Forgive me guys. Batteries again! I have just bought 9252's for cyclic, 9350 collective and 9254 throttle (GV1). Then I went to the futaba site. It says that 9350 not recommended on 4.8 volts and 9252's or 9354(3) not recommended on 6 volt and GY601/9151 NA for 6 volt. Now I have seen the posts on regulated 6 volt supplies. Are you just regulating to 4.8 volts?? How does that work.
Also I was being a smart and bought a 2700 Nimh pack for the electronics (can charge it with my triton). No one seems to be using these? Did I get the wrong thing? maybe not so smart! It may also not have enough weight to balance the X-Spec. Is there any guru's out there that are right up with the play on batteries and futaba servo's that can help clear this up for me?
Cheers
Glenn

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06-04-2004 08:14 PM  13 years agoPost 2
mrNoodles

rrProfessor

Borlänge, Sweden

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Gleen
You can use the 9350 on 4.8V, most of us do.
The Triton should be able to charge NiMh´s if my memory is correct.

/Fredrik
'Hm now I just have to find out where to connect the GV1 sensor to the Jazz80 ESC.

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06-04-2004 08:15 PM  13 years agoPost 3
z11355

rrMaster

New England

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the 9350 is fine on 4.8v. just a bit slower.

the 2700 NiMH have a fair amount of internal
resistance and under full digital load, might
drop voltage.

I have the same servos on my Freya and use
a NiCd 1700 pack.

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06-04-2004 11:19 PM  13 years agoPost 4
slant911

rrVeteran

Las Vegas, NV. Hirobo, Magnum Fuels, MAH

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YES the Triton will charge that pack...


John B. McNamara

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06-05-2004 12:08 AM  13 years agoPost 5
Garry-Boy

rrKey Veteran

Moscow, Russia

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Then I went to the futaba site. It says that 9350 not recommended on 4.8 volts and 9252's or 9354(3) not recommended on 6 volt and GY601/9151 NA for 6 volt.
Glenn,
The only thing with your servos is that 9254 is too fast for GV-1,
Gv-1 is much slower.

Garry.

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06-05-2004 12:38 AM  13 years agoPost 6
racingstripe

rrVeteran

Sacramento, CA

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I run cyclics & collective un-regulated on a 5 cell 2700 NiMH pack. A Duralite 5.1v regulator powers the Rx, GY601 & GV1.

here's a pic.

Using futaba 9451 for collective & 9202's for the cyclics and 9602 mini servo on the throttle. Used std. servos to cut down on the current draw.

My X-spec ended up being slightly nose heavy.

andy-

Proofread carefully to see if you any words out.

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06-05-2004 04:44 AM  13 years agoPost 7
AndyH

rrKey Veteran

Rockledge, FL

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Not true Garry-boy! The GV-1 responds much better with the fast servo. I have ran standard and and a 9253 (almost as fast as a 9254) and it made a huge difference!!

Use a fast servo on your GV-1 and you will feel a difference!

I'm not trying to start and arguement about Gv-1's I'm just reporting actual experience.

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06-05-2004 09:15 AM  13 years agoPost 8
mrNoodles

rrProfessor

Borlänge, Sweden

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The GV´s reaction time isnt 0.22s or whatever been stated here plenty of times, its 20mS (0.02S).

For you non-believers
Here (Page 45)

/Fredrik
'Hm now I just have to find out where to connect the GV1 sensor to the Jazz80 ESC.

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06-05-2004 05:09 PM  13 years agoPost 9
AndyH

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Rockledge, FL

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Thank you MrNoodles! Some people must not know the difference between a mS and and a Second! Stated right in the manual!

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06-05-2004 10:09 PM  13 years agoPost 10
Garry-Boy

rrKey Veteran

Moscow, Russia

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Doh!
Actually I'm using 9253 on the throttle, cause I like to fly without GV-1, with fast throttle, I used to fly with slow and I know the difference...

Hey, on the page 45 of the manual there aren’t any speed settings for GV-1. I might mix something but I believe that the numbers you are talking about are the initials values for the servo position.
Speed couldn’t be 0.02s, its really too fast!

Garry.

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06-05-2004 10:15 PM  13 years agoPost 11
mrNoodles

rrProfessor

Borlänge, Sweden

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Check page 45 in the pdf manual linked to above.
Technical data or specs.

/Fredrik
'Hm now I just have to find out where to connect the GV1 sensor to the Jazz80 ESC.

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06-05-2004 10:22 PM  13 years agoPost 12
Garry-Boy

rrKey Veteran

Moscow, Russia

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It's on page 47
Damn it simply couldn't be that fast, 0,02s that is impossible!

Garry

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06-05-2004 10:24 PM  13 years agoPost 13
mrNoodles

rrProfessor

Borlänge, Sweden

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Why impossible?
Its not any moving parts.. just digital bits passing thru some micro processor.

/Fredrik
'Hm now I just have to find out where to connect the GV1 sensor to the Jazz80 ESC.

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06-05-2004 10:28 PM  13 years agoPost 14
Garry-Boy

rrKey Veteran

Moscow, Russia

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Hm... but why all this guys say that TJpro is faster then?
I didn’t have an opportunity to compare it with some other governor, but I simply couldn't imagine the speed of 0.02s it's faster than any of the servos available today.

Garry.

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06-05-2004 10:31 PM  13 years agoPost 15
mrNoodles

rrProfessor

Borlänge, Sweden

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Hmm the GV takes 0.02sec to put out the signal to the servo, it doesnt know if you got a 9254 or 3001 as throttleservo.
Its the GV´s time + the servo time.

/Fredrik
'Hm now I just have to find out where to connect the GV1 sensor to the Jazz80 ESC.

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06-05-2004 10:35 PM  13 years agoPost 16
Garry-Boy

rrKey Veteran

Moscow, Russia

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I see, but from my experience the servo by itself works for me much better than with a governor, it was a bit tricky to made a curve but when I did this, heli starts to fly much better without gv-1, much faster on throttle. I don’t know why, but that’s true?
Why everyone say that TJpro is better because it could works with a digitals then?
Garry

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06-05-2004 10:46 PM  13 years agoPost 17
mrNoodles

rrProfessor

Borlänge, Sweden

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If arent using the GV you are gaining 0.02sec so I guess you are correct
I havent seen or used a TJ Pro, havent read that much about them either, but they are probably as good as GV or maybe even better, but I cant say why ppl are claiming they are handling fast servos better.

/Fredrik
'Hm now I just have to find out where to connect the GV1 sensor to the Jazz80 ESC.

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06-05-2004 10:56 PM  13 years agoPost 18
Garry-Boy

rrKey Veteran

Moscow, Russia

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they are probably as good as GV or maybe even better
What could be better than 0.02s if GV is really works with this speed??? GV-1 is much friendly with its menu than TJpro.
Damn who knows what is right, I think than its better for me just to fly, or I'm risking to burn brains being so young!
Garry.

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06-06-2004 12:03 AM  13 years agoPost 19
Helinutnz

rrElite Veteran

below 42 South

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excellent

Thanks for the discussion guys. I have been watching with great interest.
I am still a bit worried about the NI-MH pack. too much internal resistance? the voltage could drop? Just need to know a bit more on this one as i may go back to a ni pack.

My plan is to operate on 4.8 volt so i don't need a regulator as i reckon it's just another link in the chain to go wrong. imho.

I will run the 9350,9252's, GY601 combo and a 9254 through the gv1. I spent plenty on this gear (as you all know!) so hoping I'll get a good result.

I have not chosen the radio yet as my old FF7 needs retiring on the heli duties. I think I'll get the 9 CHP as it will recognise the gy and the gv I guess. I still really like the JR 9x though and can get a new one at a good price. hmmm. dunno.

Also gonna do the grip flip and wait for the new cx dampeners. also do augusto's through bolt mod. May get the heli ready to fly in 2010 at this rate!
Cheers
Glenn

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