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HelicopterAlignOther › Anyone using the new jr 8717 servos???
08-07-2007 12:13 AM  10 years agoPost 1
npsk8ter

rrApprentice

Joliet, Illinois USA

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These servos sounded wicked and just had to get um! 0.07 and 196oz at 6v. Who can touch these specs??? Also seen that szabo took first using these. One thing i wanted to ask is if anyone got these and if so how did you like how they fit??? THEY DIDNT!!! Had to dremel the frames slightly to get them to fit! Had no clue the were really that much bigger than most! Also my 9000s on the throttle was the same way! Kinda sucked having to do that to get um to fit!

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08-07-2007 12:21 AM  10 years agoPost 2
JasonM

rrApprentice

usa

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Yeah

A friend just stuck them in on friday, we had a blast all day. The collective was awesome! Did it love doing crack rolls and crack piro flips!!! Wasn't much better than the 9451 but the collective response was noticable.
We just used a file didn't take to long.

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08-07-2007 02:07 AM  10 years agoPost 3
Ozydego

rrKey Veteran

Westerville, Ohio

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I used them on the cyclic and throttle and yes I did have to dremel the frame just slightly... I used the Align servo wheels with them, and they mounted up just awesome... they pull a ton of battery juice tho, I had to recharge my 2 in 1 regulator after setup and one tank of fuel.. we will see how many flights they last now in the air. I am awestruck at the response... its actually .06 on the speed at 195 oz. of torque... way overkill on the throttle, but I said what the heck, I am buying three, why not four... also, the throttle matches the cyclic perfectly and they work ohh so smoothly with the JR 9303 and 10 ch. synthesized RX... I can let the stick bounce back to center and see every last little bounce it makes in the servos...

I did have the slightest interaction with them on the cyclic and had to dial it out at the top and bottom, so be sure to check that out...

But Honey, I can't live with just stock.....

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08-07-2007 04:58 AM  10 years agoPost 4
aviation

rrVeteran

Quebec Canada

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8717

I have just ordered some of them but I didn't know that I would have to butcher the frames. This is not good and I may send them back. How much did you need to chop to make them fit.

aviation

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08-07-2007 05:09 AM  10 years agoPost 5
n808

rrVeteran

Seattle, WA - USA

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Good info indeed. If they are not standard size, I may not consider them after all, for my next heli.

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08-07-2007 05:34 AM  10 years agoPost 6
rbove1977

rrNovice

Tegucigalpa,​Honduras

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8717

Just how much did you have to dremel to get them to fit? I just ordered 3 of those for my 600N and one airtronics 94758Z of throttle. Can you post pictures of just how much you dremeled, just to know what I will be facing when they arrive and start building mine.

Learning to fly, one day at a time

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08-07-2007 06:28 AM  10 years agoPost 7
Filby

rrApprentice

Adelaide, South​Australia

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Its around 0.5mm (f-all) that needs to be taken off the frames. Same as the 8900G servo.

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08-07-2007 07:03 AM  10 years agoPost 8
Buzzin Brian

rrProfessor

College Station,​Texas

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0.5mm? Are you kidding me? If you guys had seen what I have done to frames with a dremel tool you would freak out! And I mean that! 0.5mm is a fly poop! Easy mod. Heavy servo though, be advised. Powerfull yes, but a little on the heavy side when you put 3 together.

Build it, fly it, crash it. Repeat as often as needed.

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08-07-2007 07:13 AM  10 years agoPost 9
Filby

rrApprentice

Adelaide, South​Australia

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Thats about all I had to take out to get my 8900g servo to fit. I used a nail file and was done in about 1min of filing. Why they didnt make it standard size is beyond me, but the servo quality is very high!

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08-07-2007 11:00 AM  10 years agoPost 10
afeitang

rrNovice

Hawaii

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Any one tried DS 821? How is it? I can get for $20 each at rchover.
Torque: 72 oz/in @ 4.8v, 88 oz/in @ 6.0v
Speed: .19 sec/60deg @ 4.8v, .15 sec/60 deg @ 6.0v
Size: 1.50"x.94"x1.47"
Weight: 1.5 oz
Ball-Bearing: Single
Motor: Cored

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08-07-2007 11:29 AM  10 years agoPost 11
colsy

rrElite Veteran

Cambridge, UK

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Are these servo's 8715's with a 6V rated Amp ??

They seem marginally faster, but is the 6v rating 'True'.

Colin.

Only Quote From Experience.

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08-07-2007 12:34 PM  10 years agoPost 12
leady

rrApprentice

UK

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im gonna be using the 8715 on 5.1v, should be mental, it sounds like the 8717 is a 6v version of it

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08-07-2007 12:59 PM  10 years agoPost 13
fern

rrNovice

Portugal

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all that power & speed doesn't come from nothing, overkill!
watch the batery and regulator temperature if you a using one.

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08-07-2007 03:22 PM  10 years agoPost 14
rbove1977

rrNovice

Tegucigalpa,​Honduras

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8717

I did notice last night that my Airtronics 94758Z with a red heat sink was definitely not going to fit my frame. This one is harder though because the heat sink is wider only on one side, so after ready this post it got me thinking. When I installed the heat sink to my servo I had to put is apart to fit the heat sink. By loosening the screws on the servo I am able to take the top of the servo off, which is the one that has the holding arms to be screwed to the frame. I was thinking that taking the top of and inserting the servo once the top was on the frame and inserting the rest of the servo from behind. That is the way to fit the airtronics throttle servo that I came up with, but I don't know if its the same case with the JR. Is is too big all the way or is it just the heat sink that is to big???

Learning to fly, one day at a time

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08-08-2007 03:22 PM  10 years agoPost 15
Ozydego

rrKey Veteran

Westerville, Ohio

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The servo case is the heat sink, and is truly only about .5mm too big... very quick and easy to fit them....

But Honey, I can't live with just stock.....

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08-08-2007 04:02 PM  10 years agoPost 16
Jason Bell

rrElite Veteran

California

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I had a chance to fly these servos on my buddys 600N.

All I can say is wow! Crack rolling is FUN!!! Even thought I have Airtronics 94758Zs(Same speed) Im pretty sure the JR's felt faster in comparison.

AMain.com
Mikado "V Team"
Xnova Motors
Optipower USA
RCProPlus

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08-08-2007 04:13 PM  10 years agoPost 17
Malc1

rrKey Veteran

EVESHAM,UK

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I had to file out about 0.5mm all round to fit my 8900G - didn`t take very long to do and using masking tape and filing up to it made a very straight clean edge - you wouldn`t know it had been done

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08-09-2007 03:44 PM  10 years agoPost 18
rbove1977

rrNovice

Tegucigalpa,​Honduras

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8717

Can anybody post pictures of how the heli looks with the servos installed, bet its a beauty with the red heat sinks.

Learning to fly, one day at a time

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08-09-2007 03:46 PM  10 years agoPost 19
npsk8ter

rrApprentice

Joliet, Illinois USA

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yes they are! Ill try and post um 2nite.

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08-10-2007 03:38 AM  10 years agoPost 20
Ozydego

rrKey Veteran

Westerville, Ohio

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Here are some pics of my setup, 8717's on cyclic and throttle... frames look stock after making room for the servos and boy do those cases look nice!

But Honey, I can't live with just stock.....

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HelicopterAlignOther › Anyone using the new jr 8717 servos???
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