08-05-2020, 02:02 PM | #21 | |
I wanna be Dave Join Date: Aug 2004 Location: Tri-cities, WA
Posts: 4,831
| Re: Savox 900oz servo Quote: | |
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08-05-2020, 03:48 PM | #22 | |
Quarry Creeper Join Date: Dec 2013 Location: The Garden State, North of I-80
Posts: 439
| Re: Savox 900oz servo Quote:
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08-05-2020, 04:15 PM | #23 | |
Pebble Pounder Join Date: Jan 2018 Location: Northeast Iowa
Posts: 131
| Re: Savox 900oz servo Quote:
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08-05-2020, 04:21 PM | #24 |
Quarry Creeper Join Date: Dec 2013 Location: The Garden State, North of I-80
Posts: 439
| Re: Savox 900oz servo No problem. Yes, that is unbelievable like you said, more like incredible. And all our rigs are under 10 lbs and that's VERY conservative. So a 900 oz. servo... |
08-05-2020, 05:03 PM | #25 |
I wanna be Dave Join Date: Aug 2004 Location: Tri-cities, WA
Posts: 4,831
| Re: Savox 900oz servo |
08-05-2020, 09:21 PM | #26 |
Moderator Join Date: Sep 2008 Location: PA
Posts: 13,935
| Re: Savox 900oz servo I used to be of the thought that cheap servos ruled and they were "good enough". Well the truth is that they are "good enough" for my average trail rigs. But once you get a fast and super powerful servo you don't want to go back.
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08-05-2020, 10:03 PM | #27 | |
I wanna be Dave Join Date: Aug 2016 Location: Orange County, CA
Posts: 3,643
| Re: Savox 900oz servo Quote:
I'd still get some of those cheapies as backups, but I definitely like the stronger/faster servos now. | |
08-06-2020, 06:51 AM | #28 | |
Quarry Creeper Join Date: May 2017 Location: Devon
Posts: 442
| Re: Savox 900oz servo Quote:
Not much competition for savox and the 2290 but I still love my Promodeler 470. It's soo smooth and quiet. Sent from my Pixel 3 using Tapatalk | |
08-07-2020, 02:04 PM | #29 |
Moderator Join Date: Sep 2008 Location: PA
Posts: 13,935
| Re: Savox 900oz servo |
08-07-2020, 02:55 PM | #30 |
Pebble Pounder Join Date: Oct 2010 Location: washington
Posts: 123
| Re: Savox 900oz servo
Rc Review tested the 2290 and it barely broke 500oz. Kinda disappointing since I own 2 of them. https://youtu.be/yhcCDPBdjyE |
08-07-2020, 03:30 PM | #31 |
I wanna be Dave Join Date: Jul 2009 Location: Rancho Relaxo. California. USA. Earth.
Posts: 3,292
| Re: Savox 900oz servo
The good thing about going through a cheap servo phase is having a bunch of winch servos to play with.
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08-07-2020, 05:40 PM | #32 | |
I wanna be Dave Join Date: Jun 2016 Location: Deep in the Everglades
Posts: 5,818
| Re: Savox 900oz servo Quote:
I always watch Francis and have the salt shaker nearby. His unbiased test is OK, but look at his rig for testing. The servo arm must me 60mm.... that will drastically change torque to the tires, most servos specs are rated with 20mm arms? Hang up and Drive | |
08-07-2020, 10:00 PM | #33 | |
Rock Crawler Join Date: Jan 2019 Location: Calgary
Posts: 566
| Re: Savox 900oz servo Quote:
The length of the arm though shouldn't matter, the servo is pulling up, the arm is just a linkage, doesn't matter how long it is. If the servo horn was 60mm, that'd be a different story. | |
08-08-2020, 02:20 AM | #34 |
Pebble Pounder Join Date: Oct 2010 Location: washington
Posts: 123
| Re: Savox 900oz servo I bet the arm is 26mm/1inch
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08-08-2020, 02:25 AM | #35 |
Quarry Creeper Join Date: May 2019 Location: North Highlands
Posts: 483
| Re: Savox 900oz servo The length of the arm most surely does matter. Rule of leverage. Try picking up a weight tied to a 10" stick, easy. Make that stick 20" and it will be much harder to lift. It's on a much smaller scale, but you bet it makes a difference.
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08-08-2020, 06:26 AM | #36 |
I wanna be Dave Join Date: Jun 2016 Location: Deep in the Everglades
Posts: 5,818
| Re: Savox 900oz servo
Arm length doesn’t change the servo, it does change the effect on the linkage. I did try this on my Bullyll, a double length horn did cut the reaction dramatically. Here’s a good read: https://www.rcuniverse.com/forum/aer...rm-length.html Hang up and Drive |
08-08-2020, 08:00 AM | #37 |
Rock Crawler Join Date: Jan 2019 Location: Calgary
Posts: 566
| Re: Savox 900oz servo
He's not changed the length of the servo horn though. Look at the video again, it's a standard length servo horn. The stick analogy doesn't work because the leverage is all on the servo horn, the linkage length is irrelevant, the linkage is not a lever in his test, the servo horn is. |
08-08-2020, 08:02 AM | #38 | |
Rock Crawler Join Date: Jan 2019 Location: Calgary
Posts: 566
| Re: Savox 900oz servo Quote:
It'll take the same amount of force, in his test, the arm is the same as the rope in my example. There is no leverage on the arm, it's all on the servo horn. | |
08-08-2020, 08:11 AM | #39 | |
Rock Crawler Join Date: Jan 2019 Location: Calgary
Posts: 566
| Re: Savox 900oz servo Quote:
Is that what you've been talking about??? You said arm so I thought you meant the silver linkage arm, not the horn itself. | |
08-08-2020, 09:33 AM | #40 | |
I wanna be Dave Join Date: Jun 2016 Location: Deep in the Everglades
Posts: 5,818
| Re: Savox 900oz servo Quote:
Yup, sorry, Horn and Arm are interchangeable. It looks as Francis is using a longer horn than 20/25mm Hang up and Drive | |
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