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Old Apr 02, 2012, 12:51 AM
Boomer1
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United States, CA, Temecula
Joined Sep 2009
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asa

Are you going to race in sanctioned races? You may have mentioned that in the past, too tired to go back to see.
If you are not then I suggest using the strongest servo you can find that will fit. Chidago enlarged the opening in his boat to accomodate the Futaba he installed.
If you are going to race that is a different story. I have mentioned in the past that I don't concern myself with 4.8 volt ratings. Because I like using 6 volts those are the specs I pay attention to.
I like to have the power. That is not to say you have to have more torque to sail a Nirvana -
I have been able to push the stock servo arm on an Hitec servo.
Boomer
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Old Apr 02, 2012, 07:16 AM
Nirvana 38, Seawind 178
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United States, FL, Key West
Joined Feb 2012
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oldasa, the sail arm has to be attached to the round piece that comes with the new servo if you use the 3802, I didn't find that to be a problem. I think the 645 servo does not require enlarging the hole.
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Old Apr 02, 2012, 07:29 AM
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I think I also posted some pics on how to properly adjust the stock servo..
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Old Apr 02, 2012, 07:34 AM
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Pics from the sail this weekend are here:

http://www.rcgroups.com/forums/showt...7#post21212537
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Old Apr 02, 2012, 12:46 PM
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Old Apr 02, 2012, 04:15 PM
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Ontario Canada
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Quote:
Originally Posted by Capt.Crash View Post
All that servo stuff was hashed over in about the 1st page and several others as it kept coming up. I use the 645mg and it does require modification to the arm...also on the 1st page somewhere.
I used the HS 985 and no mods were required.
The splines fit just fine. The servo size was the same as the original too, or very close.
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Old Apr 02, 2012, 04:25 PM
Useful Idiot
Asturias, Spain
Joined Mar 2001
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The Cirrus CS704/MG is fairly small in size with more than enough torque. http://www.sussex-model-centre.co.uk...xd.asp?id=5644
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Old Apr 02, 2012, 04:27 PM
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United States, TN, Memphis
Joined Jan 2012
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Quote:
Originally Posted by lilleyen View Post
I used the HS 985 and no mods were required.
The splines fit just fine. The servo size was the same as the original too, or very close.
Hi Lilleyen;
Where you been?
Your servo exceeds the class sanctioned max of "125 oz.in @ 4.8 V"
That puts you in the tainted column with Boomer.
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Old Apr 02, 2012, 04:56 PM
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I had another entry form in the mailbox when I got home today...
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Old Apr 02, 2012, 05:02 PM
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Quote:
Originally Posted by martin richards View Post
The Cirrus CS704/MG is fairly small in size with more than enough torque. http://www.sussex-model-centre.co.uk...xd.asp?id=5644
Thats more than I spent for my boat
It's got enough torque to inadvertently twist your finger off.
must conform to the max "125 oz.in @ 4.8v" rule.
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Old Apr 02, 2012, 05:07 PM
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Quote:
Originally Posted by seabee CE View Post
oldasa, the sail arm has to be attached to the round piece that comes with the new servo if you use the 3802, I didn't find that to be a problem. I think the 645 servo does not require enlarging the hole.
Yeah the Hs 645 Mg is virtually a drop in as is (no mods). Thanks for your help.
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Old Apr 02, 2012, 05:29 PM
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Quote:
Originally Posted by oldasa View Post
Yeah the Hs 645 Mg is virtually a drop in as is (no mods). Thanks for your help.
One more time...the 645 WILL require the sail arm to be modified...
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Old Apr 02, 2012, 05:50 PM
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United States, TN, Memphis
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Quote:
Originally Posted by Capt.Crash View Post
One more time...the 645 WILL require the sail arm to be modified...
Hi Captain. Words out that the later boats have a servo with the same spline as the Hitec 645. If not.........then just as you say.

The white round spindle that comes with all 645s has the correct spline and has to be turned down a little to fit up inside the stock servo arm. I guess you can tell I've been in touch with Steve. I'll let you know when my servo comes in if its a perfect fit.
How was work today?
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Old Apr 02, 2012, 06:03 PM
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Ohhhhhhhh...........I didn't know the new servo spline is the same as the Hitec 645MG....if that's the case.....NEVER MIND!


Oh and work sucks...
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Old Apr 02, 2012, 06:08 PM
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Amazing...anyway, here is a 40 knot/46 mph boat for ya..
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