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HomeAircraftHelicopterSynergy R/CSynergy N5c › N5c throttle servo, question? (What mini servo fits) edited
06-05-2012 06:45 PM  6 years agoPost 1
Zaneman007

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Texas - USA

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Not having a standard size opening in the frame, throws out most options.

Also, mini size servos seem to be prone to vibration related issues.

Who is running the throttle servo at 7 volts and what servo are you using?

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06-05-2012 06:51 PM  6 years agoPost 2
seldred

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I am not using a 7V servo, but I have been using a futaba 9650 for a year with no problems.

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06-05-2012 06:58 PM  6 years agoPost 3
Zaneman007

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I need a 7.4 volt mini servo? All of the other servos are 7.4 volts. I am not going to purchase a regulator for one servo!

I had purchased a 7.4v servo for the throttle, before I became aware of the fact that the N5c only allows for a mini throttle servo?

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06-05-2012 09:45 PM  6 years agoPost 4
GScott

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Lewis Center, OH

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I think Hitec or JR may have a HV mini servo. Another option is an inline regulator for the throttle. I think Perfect Regulators has one and it's about the size of the older tail step downs.

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06-06-2012 01:12 AM  6 years agoPost 5
jacek

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royal palm beach fl usa

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I'm using JR DS3717HV mini throttle servo. Is perfect no problems and no need for voltage regulator.

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06-06-2012 01:24 AM  6 years agoPost 6
Scott Anderson

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Yep same here the JR has been great on 8.4V no issues after 3 cases of fuel

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06-06-2012 02:22 AM  6 years agoPost 7
P Johnston

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Ann Arbor MI

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I am using the BLS153. I have about 80 flights using a lipo pack and no regulators. Works great!
FYI this servo is a bit pricy...I couldn't put a Jr in it, just couldnt do it.

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06-06-2012 03:23 AM  6 years agoPost 8
Kevin Dalrymple

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Indianapolis

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+3 on the jr 3717HV servo. I bought a new one off eBay for under 50 bucks shipped. And not from overseas.

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06-07-2012 09:39 AM  6 years agoPost 9
RotorHead486

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England

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Go for the JR DS3717HV for a high voltage application, i use a Spektrum H5000 mini servo on mine but i use it on the regulated side of the AR7100R receiver so it gets 5.2v.

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06-16-2012 06:40 PM  6 years agoPost 10
Zaneman007

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Mini servo does not fit?????
Ok,

I got the JRDS3717 HV mini servo. I go to place it in the frame and the first thing I notice is that there are no servo hold downs for a mini servo. The two remaining ones are for a standard servo. No problem, I pull out the dremel and drill to elongate the holes. I run the first two screws through the hold down through the servo grommets and get them started. I go to do the same on the other side of the servo, just to realize that the throttle servo mounts do not line up. They are off by a good four millimeters?

What size servo is the opening designed to hold?

How are those of you mounting the throttle servo? Is it just hanging on by two screws on one side?

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06-16-2012 06:49 PM  6 years agoPost 11
P Johnston

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Ann Arbor MI

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The frame was designed to hold the Futaba 9650.

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06-16-2012 06:59 PM  6 years agoPost 12
Darren Lee

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Woodstock, GA

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As shown in the manual, you should be using the 610-122 Throttle Servo Mounts for the throttle servo. These are smaller than the 610-123 Tail Servo Mounts.

The Futaba 9650 and 9257 are an exact fit. Not sure if the JR mini has a different mounting pattern but dang that's an expensive throttle servo!

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06-16-2012 07:12 PM  6 years agoPost 13
Scott Anderson

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JR DS3717HV fits perfect

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06-16-2012 08:40 PM  6 years agoPost 14
Zaneman007

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Texas - USA

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The throttle servo mounts are not the issue.

The distance between the throttle servo mounts is the issue which is 43mm, and you are correct the futaba 9650 mounting holes are 43mm. Thus, a perfect fit.

On the other hand?
The JRDS3717 mounting holes are approximately 39mm apart in length. So, How did you guys get this servo to fit into throttle servo mounts that are 43mm apart? I mean 4mm is huge, considering that the mounting bracket on this servo is only 5mm from end to end.

Did you leave out the metal inserts that go in the servo grommets? did you elongate the holes in the frame? If I did 2mm on each side that might work?

A 4mm variance is not a "perfect fit" in my book. I mean it is not like they just lined up.

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06-16-2012 08:46 PM  6 years agoPost 15
Scott Anderson

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Yeah no grommets, just the bolts and mounting tabs.

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06-16-2012 08:59 PM  6 years agoPost 16
Zaneman007

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No grommets?
Not sure if I'll be going that route.

I am more of a code compliance guy myself.

Thanks anyway.

What about the other 3717 recommendations? How are you guys mounting them?

The same way or no?

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06-16-2012 09:05 PM  6 years agoPost 17
Kevin Dalrymple

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Indianapolis

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I have mine with the gromets installed and i just centered the servo between the holes. They grab on the edge of the case. it works, and i have not had an issue.

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06-17-2012 05:40 PM  6 years agoPost 18
Scott Anderson

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Code or no code...I haven't used grommets in years

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06-19-2012 01:13 AM  6 years agoPost 19
Zaneman007

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Texas - USA

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Grommets
I stuck with leaving the grommets on. I've lost a mini servo to vibration on a 50 size heli.

I drilled a hole in the frame and moved the throttle servo mount over by 4mm. I just did one of the mounts. Then, I drilled a small indent into the servo opening so that the screws would clear the Carbon Fiber, and that allowed me to leave the grommets intact.

So I'm good.

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06-19-2012 04:58 PM  6 years agoPost 20
Scott Anderson

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Cool glad you found a good solution.

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