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MSH Protos, Mini Protos
› Protos and Spartan DS760, your distance and experience
07-10-2008 07:19 AM  9 years agoPost 1
OICU812

rrMaster

Edson, Alberta, Canada

My Posts: All  Forum  Topic

So messing about with the Spartan on this heli. Most cases you set the deceleration to 50% roughly and there are basically no other adjustments etc required at all.

Well on the Protos with recommended as per manual distance on servo horn of 13.5mm this does not seem to be the case...

First off I am using a Futaba 9257 tr servo.

So basically the only way I cam make it so the tail does not go into a violent wag on stopping from a CC rotation was to back that stop gain to 55% which is the bottom adjustment of how far you can even go, as well the deceleration to 50% roughly and the gain as low as 35% in the DX7

the limits are low as well 65 and 115

I have not yet moved in the ball on servo horn.

Wondering anyone elses experience with Spartan, ball distance and Spartan settings and what worked for them, thanks for your time in advance.

...Once upon a time there were Nitros, flybars and frequency pins...

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07-10-2008 07:26 AM  9 years agoPost 2
Sam2b

rrElite Veteran

Seattle, WA

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My protos's tail is super fluid and solid-feeling in the air. Here is my setup:

Spartan DS760 with latest firmware
Futaba 9257 servo
5V regulated BEC
Servo horn linkage ball third hole out from center (~13mm)
Servo horn is absolute center 90 degrees while in rate mode.
~8 degrees right thrust while in rate mode.
Deceleration 50%
Acceleration 50% (optional)
Gain on the gear channel at 31% gain.
My limits are set to swing the slider full left and full right.

_Sam B_
Team MSH USA * Protos Max * Xpert servos * Cyclone Blades * ProgressiveRC * VoltMagic * Ecalc

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07-10-2008 07:38 AM  9 years agoPost 3
OICU812

rrMaster

Edson, Alberta, Canada

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Thanks for reply, that is well, exactly where mine is in regards to distance, gain % on gear and degrees on rate and non rate etc.. I am getting some wicked wag on stops if I set my settings to where you have yours, everything is super free and non binding as well.,. hmmmmm weird...

...Once upon a time there were Nitros, flybars and frequency pins...

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07-10-2008 07:41 AM  9 years agoPost 4
Sam2b

rrElite Veteran

Seattle, WA

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I am getting some wicked bounce on stops
What head speed are you running? I'm currently below 2500 head speed.

Also, try turning deceleration all the way down (slider to the left).

What technique did you use to measure 8 degrees of right thrust while in rate mode?

_Sam B_
Team MSH USA * Protos Max * Xpert servos * Cyclone Blades * ProgressiveRC * VoltMagic * Ecalc

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07-10-2008 07:46 AM  9 years agoPost 5
OICU812

rrMaster

Edson, Alberta, Canada

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I am running around 2700-2800HS, 16tooth on 6S goverened on Jazz 80-6-18. I look above the tr to see approx 8 degrees, it doesn't have to be exact really. I have 4 other of these gyros on other machines, so I am abit miffed as to the situation on Protos...

...Once upon a time there were Nitros, flybars and frequency pins...

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07-10-2008 07:49 AM  9 years agoPost 6
Sam2b

rrElite Veteran

Seattle, WA

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I am running 15 tooth pinion.

I really suggest buying a transparent protractor and measuring 8 degrees of right thrust. With the tail blades vertical, hold the protractor over the top blade while lining up the zero degree line with the boom. It may sound silly, but are you sure you dialed in right thrust and not left?

Another thought: When the linkage is disconnected from the servo horn, is it truly loose and free moving, or is it tight?

_Sam B_
Team MSH USA * Protos Max * Xpert servos * Cyclone Blades * ProgressiveRC * VoltMagic * Ecalc

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07-10-2008 08:31 AM  9 years agoPost 7
jyzoom

rrApprentice

Singapore

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right trust

I am also trying to fine tune the spartan with my BLS251. I find that it is not holding as well after I did a couple of soft 3D flips and rolls....

Was playing with the programming of the spartan, never have to touch the programming in all previous helis other then limit.

I will be following this thread closely.

Sam,

Just for my 100% understanding, right trust means 8% towards the direction I want the heli to turn right?

Jonathan

Goblin 700, Furion 450, Synergy E6

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07-10-2008 08:35 AM  9 years agoPost 8
OICU812

rrMaster

Edson, Alberta, Canada

My Posts: All  Forum  Topic

I am running 15 tooth pinion.

I really suggest buying a transparent protractor and measuring 8 degrees of right thrust. With the tail blades vertical, hold the protractor over the top blade while lining up the zero degree line with the boom. It may sound silly, but are you sure you dialed in right thrust and not left?

Another thought: When the linkage is disconnected from the servo horn, is it truly loose and free moving, or is it tight?
First of all I am 100% + I have set right thrust correctly, as stated I own several of these. Secondly I have set all others up by eye and never had an issue, the 8 degrees is not specific to the point that one or even as much as 2-3 degrees would make a difference, not enough to see and feel what I am, this was spoke by Angelos the creator himself.

Lastly yes without being hooked up it is all super free, guranteed.

I do appreciate your help and words, please understand I do have some experience behind me on these gyros.

Just this is about out of ordinary for this gyro for certain...

...Once upon a time there were Nitros, flybars and frequency pins...

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07-10-2008 08:37 AM  9 years agoPost 9
OICU812

rrMaster

Edson, Alberta, Canada

My Posts: All  Forum  Topic

Just for my 100% understanding, right trust means 8% towards the direction I want the heli to turn right?
8 "Degrees" of pitch bite towards boom, nose right movement.

...Once upon a time there were Nitros, flybars and frequency pins...

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07-10-2008 11:31 AM  9 years agoPost 10
Ronald Thomas

rrMaster

Gainesville, Fl, USA

My Posts: All  Forum  Topic

I am running around 2700-2800HS,
I know Corrado only wants a maximum headspeed of 2600 (6s with a 15 tooth pinion) which is more than enough for hot 3D. Is there a possibility that you are over speeding the drive train and the mechanics of the head/tail cannot keep up no matter what the electronics (gyro) try to do? Personally I think the Protos could use larger tail blades to give the tail a little more umph.....Ron

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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07-10-2008 11:54 AM  9 years agoPost 11
Sam2b

rrElite Veteran

Seattle, WA

My Posts: All  Forum  Topic

Just for my 100% understanding, right trust means 8% towards the direction I want the heli to turn right?
The heli should turn clock-wise with right thrust. I hope we understand each other by me saying it that way.

_Sam B_
Team MSH USA * Protos Max * Xpert servos * Cyclone Blades * ProgressiveRC * VoltMagic * Ecalc

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07-10-2008 04:59 PM  9 years agoPost 12
OICU812

rrMaster

Edson, Alberta, Canada

My Posts: All  Forum  Topic

I know Corrado only wants a maximum headspeed of 2600 (6s with a 15 tooth pinion) which is more than enough for hot 3D. Is there a possibility that you are over speeding the drive train and the mechanics of the head/tail cannot keep up no matter what the electronics (gyro) try to do? Personally I think the Protos could use larger tail blades to give the tail a little more umph.....Ron
A few friends running 3000-3100 ron, not a big deal at all. Mikado only suggested the 600 to run 1900rpm as well, I run mine at 2400 with no issues, Align suggested the 450 to not exceed 2600 and look how many are 3400+. I do agree abit larger tailblades would have been nice for certain, I do know my issue is not one of overspeeding etc it might be a setting yet or perhaps the Spartan is just not a good fit for this one, it is possible.

...Once upon a time there were Nitros, flybars and frequency pins...

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07-10-2008 05:08 PM  9 years agoPost 13
EricW

rrApprentice

Netherlands

My Posts: All  Forum  Topic

Maybe a stupid suggestion..
Did you already try different servo speed settings?
A friend had a similar problem on another heli, couldn't get it right whatever he tried, and set the servo speed with 0,01 slower than spec to solve it.

Eric

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07-10-2008 05:09 PM  9 years agoPost 14
OICU812

rrMaster

Edson, Alberta, Canada

My Posts: All  Forum  Topic

Eric, was this with a 9257 tr servo you speak of? I have only tried with the default speed setting it gives with the 9257 in the configuration software, I believe it sets it to .08 .....

...Once upon a time there were Nitros, flybars and frequency pins...

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07-10-2008 05:12 PM  9 years agoPost 15
EricW

rrApprentice

Netherlands

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No was a bigger one on a much bigger heli(Millenium),
But he told me the story this weekend, and i thought maybe it's worth a try..

Eric

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07-11-2008 08:40 AM  9 years agoPost 16
OICU812

rrMaster

Edson, Alberta, Canada

My Posts: All  Forum  Topic

Well this is a first out of all my Spartans.... I took it off, put on another I had, issue gone. So,,, in the end a bad Spartan. Guess I will try their customer service, warranty for the first time.. Thx for all the suggestions, I was baffled and rightfully so apparently.

...Once upon a time there were Nitros, flybars and frequency pins...

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07-13-2008 01:27 PM  9 years agoPost 17
jyzoom

rrApprentice

Singapore

My Posts: All  Forum  Topic

Thank you

Sam_b, OICU812,

Thank you for this thread and the information provided. I resolve my tail holding issue with Sam configure.

"~8 degrees right thrust while in rate mode.
Deceleration 50%
Acceleration 50% (optional)
Gain on the gear channel at 31% gain."

Jonathan

Goblin 700, Furion 450, Synergy E6

PM  EMAIL  Attn:RR
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