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12-08-2011, 12:33 PM | #101 |
Quarry Creeper Join Date: Apr 2010 Location: Centurion, GP, RSA
Posts: 430
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Digital Servo—DS-8325HV Specification: Model: Digital Servo—DS-8325HV Operating Voltage: 6 ~8.5 V Speed @ 6.0v: 0.145 sec/60°at 6V Speed @ 8.5V: 0.118 sec/60°at 8.5V Torque @ 6.0V: 25kg-cm Torque @ 8.5V: 31kg-cm Dimensions: 40x20x45mm Weight: 79g Savox SA-1283SG Super Torque Steel Gear Digital Servo. Dimensions(mm): 40.8x20.2x37.4 Weight(g): 80.0 Speed(@4.8V sec/60): .16 Torque(@4.8V oz-in): 347.2 Speed(@6.0V sec/60): .13 Torque(@6.0V oz-in): 416.6 Gear: Unique Steel Bearing: 2BB Case: Full Aluminum 25 Tooth Spline Last edited by reden; 12-08-2011 at 12:41 PM. |
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12-08-2011, 02:04 PM | #102 |
Rock Crawler Join Date: Aug 2011 Location: Baton Rouge
Posts: 965
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I am a serious Savox fan. I have a Sg 1268 sg . Mandatory for all my vehicles no matter on road or crawling it has to be equiped with Savox! |
12-23-2011, 06:00 AM | #103 |
Rock Stacker Join Date: Nov 2011 Location: Louisville
Posts: 70
| Re: Lets talk servos and servo power
Question for you- Does your Savox run hot?? Just got mine- Savox Coreless Digital Servo #SC-1256- was out doing some crawling lately and felt it- definitely very warm to the touch. Anyone else have this issue?? I've got an aluminum guard on mounted on top- thinking of removing it to allow more cooling...?? Any input?? |
05-06-2012, 01:58 PM | #104 |
Pebble Pounder Join Date: Jan 2010 Location: Gibraltar
Posts: 124
| Re: Lets talk servos and servo power
hitecs are the ONLY servos for me, got 7954, a 7940, two 7955's and a 7980!!! all awsome!
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05-07-2012, 02:05 PM | #105 |
Quarry Creeper Join Date: Apr 2010 Location: Centurion, GP, RSA
Posts: 430
| Re: Lets talk servos and servo power
As I'm also a Futaba fan I will be getting this servo. The HD DS8325HV broke the ouput shaft just below the splines. Cannot find sapre gears locally. |
05-07-2012, 02:22 PM | #106 | |
I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
| Re: Lets talk servos and servo power Quote:
I'm not quite willing to swap over to Futaba though, I have a "few dollars" in decent HiTec aluminum servo arms between my son & I. | |
05-07-2012, 02:25 PM | #107 | |
Quarry Creeper Join Date: Apr 2010 Location: Centurion, GP, RSA
Posts: 430
| Re: Lets talk servos and servo power Quote:
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05-08-2012, 07:08 AM | #108 |
RCC Addict Join Date: Jan 2012 Location: Sweden
Posts: 1,809
| Data pitfalls!
Have you noticed the potential traps when reading servo data? Voltage The voltage indicated is rarely the voltage actually used, but the nominal voltage of the (fully charged) battery used for testing. 4.8V data tells what you get with a ~5.5V actual feed (4 cell NiMH). 6.0V data stem from a ~7.0V feed (5 cell NiMH). 7.2V and 7.4V data are taken at ~8.4V feed. Torque Two types/levels of torque are in use: Standing torque and stall torque. Standing torque is the upper limit at which the servo can hold the axle somewhat stationary while external force is applied. Stall torque is the limit at which the servo motor (barely) can rotate the axle. This is lower than the standing torque, for some servos by a substantial margin. What does this mean? - Don't compares apples to pears! - When comparing data from different manufacturers, try to find out if they present the stall torque or the standing torque. Assume standing torque unless otherwise noted. - To see the performance applicable to you, use the voltage line most representative for your feed. A 6V BEC will give performance slightly above the 4.8V data, while a 7.0V BEC should be spot on the 6.0V data. |
09-19-2012, 10:57 AM | #109 |
Pebble Pounder Join Date: Jul 2012 Location: Crawlerado Springs
Posts: 168
| Re: Lets talk servos and servo power
Hi all. I am sure the answers to my questions are somewhere on this site but I am getting brain cramps reading forum after forum. Please help. I am running an ax-10 scorpion with the stock tx, an ax-1. The stock rx, an ar-1. and the stock esc, an ae-1. (all very sad) I have a hitec 645mg now and it is not enough strength. I know I need to add a bec if I go with any servo that is a considerable upgrade. Ok now the questions. Will adding a bec that is set to deliver 7.4v to the 645mg be enough to help any? If I go to a 7950 or similar servo do I need a radio with end point adjustments or just pay real close attention to the amount of throw I use when I set up my servo horn? Any thoughts or ideas are greatly appreciated. Thanks
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09-19-2012, 11:09 AM | #110 | |
I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
| Re: Lets talk servos and servo power Quote:
Once you get to ~200inoz+, an external BEC is really required. Having steering EPA's in the TX is nice, but yes, you can be very careful in linkage set-up to prevent issues. It's the PITA way to do it though. | |
09-20-2012, 07:52 PM | #111 | |
Pebble Pounder Join Date: Jul 2012 Location: Crawlerado Springs
Posts: 168
| Re: Lets talk servos and servo power Quote:
Thanks. I guess since an external bec is in order either way I will add it and see how the 645mg does. (not gonna get hopes up) Will likely go with the Solar servo since this thing is not a comp rig. | |
10-24-2013, 11:31 AM | #112 |
Quarry Creeper Join Date: Dec 2007 Location: Cap-St-Ignace,Québec,Canada
Posts: 258
| Re: Lets talk servos and servo power
What is the best servo steering for the Wheely King?I want more torque because upgrade for Clod wheels and tires. |
10-24-2013, 11:51 AM | #113 |
RCC Addict Join Date: Sep 2010 Location: Apollo Pa
Posts: 1,650
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10-24-2013, 12:15 PM | #114 |
Quarry Creeper Join Date: Dec 2007 Location: Cap-St-Ignace,Québec,Canada
Posts: 258
| Re: Lets talk servos and servo power
I put my servo on the axle.The stock servo is to small for the big tire.
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10-24-2013, 12:17 PM | #115 |
RCC Addict Join Date: Sep 2010 Location: Apollo Pa
Posts: 1,650
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Ok, sorry if you're on a budget the solar servos are great 772 I believe is the model. Sent from the RAZR's edge |
10-28-2013, 10:46 AM | #116 |
Rock Stacker Join Date: Aug 2006 Location: Boone, NC
Posts: 79
| Re: Lets talk servos and servo power
How would the Solar D722 compare to Hitec 645MG? I've stripped some gears in my 645 and I can get the D772 for the same price as a rebuild for the 645. Seems too cheap for the specs!
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10-28-2013, 10:50 AM | #117 |
RCC Addict Join Date: Sep 2010 Location: Apollo Pa
Posts: 1,650
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You can buy almost 2 for 1 hitec 645 and they have way more torque. Sent from the RAZR's edge |
10-28-2013, 11:32 AM | #118 |
Rock Stacker Join Date: Aug 2006 Location: Boone, NC
Posts: 79
| Re: Lets talk servos and servo power
Yeah, I already have the 645MG, but stripped it running it in a 1/8th truggy. Was debating on the D722 as a replacement VS buying the replacement gear set for the 645. At the price, I guess I should just go ahead and order the D722 and if it bombs out, I can always buy the gear set for the 645 at a later date.
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10-28-2013, 11:36 AM | #119 |
RCC Addict Join Date: Sep 2010 Location: Apollo Pa
Posts: 1,650
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I had a D772, I abused it for a while and it worked great. Sent from the RAZR's edge |
10-28-2013, 12:34 PM | #120 |
Rock Stacker Join Date: Aug 2006 Location: Boone, NC
Posts: 79
| Re: Lets talk servos and servo power
Got one on the way. |
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