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Old 01-08-2010, 12:31 PM   #1
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Talking Hitec 7990HV!!!!

Anyone seen this yet. This servo will be huge for the market. Saw it in the Hitec catalog of upcoming relases at my LHS.



Uses a magentic potentiometer!!!! The first Standard servo of it's kind. Leave it to Hitec to one up the market and put it's foot down on the new standard.

For those who don't know servos that everyone uses now uses two pieces of ALU or Metal as a potenitometer that rub together and create different resistances letting the servo know where it is at (centering/full rotation, etc..).

The old style potentiometer can get dirty and cause the servo to be irratic and not center correctly since the resistance changes, and can't be read correctly when it's dirty or worn out.

This new style will never touch allowing for more precise centering, and only having centering issues caused by worn gear sets, and not the potentiometer causing you to send it in for repair/replacement.

OOO did I mention it has over 600oz of Torque @ 7.4v!!!

That's 40lbs. Yes I said 40lbs of Torque. Anyone need to lift there baby up with a standard servo!
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Old 01-08-2010, 12:36 PM   #2
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Hard to believe they can improve what they have now. Go Hitech
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Old 01-08-2010, 12:37 PM   #3
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Holy bejesus's! Thats a whole mess load of torque. Any word on a pirce?
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Old 01-08-2010, 12:45 PM   #4
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They didn't have any quoted price in the catalog, since it has "yet" to be relased to any public.

I would bet right under 200 since they new HV line is about 120 depending on where you find it at. I'm guessing 150 - 180. Hell I could be wrong and they release it at the same price as the rest of the HV line. Who knows.. Leave it to Hitec to alwasys surprise us.

From what I understand it's just finishing up testing, and about to be released in the first quater this year, but don't count on that as it took them longer then they stated to release their first line of HV servos.
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Old 01-08-2010, 12:50 PM   #5
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Billy, you got an ETA????
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Old 01-08-2010, 12:58 PM   #6
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Motor Type: Coreless
Bearing Type: Dual Ball Bearing
Speed: 0.20 / 0.18 sec.@ 6.0 / 7.4v
English Metric
Torque: 528 / 639 oz./in. (6.0v/7.4v) 37.7 / 45.6 oz./in. (6.0v/7.4v)
Size: 1.72" x 0.88" x 1.57" 43.00 x 45.60 x 39.00mm
Weight: 2.72oz 77.00g

Speeds are a little lathargic. Can't wait to see the high speed version.
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Old 01-08-2010, 01:23 PM   #7
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Speed is a little slow for throttle maybe.

Steering this would be perfect. Plus it's all about the upgraded potentiometer!! Another thing you don't have to worry about on the servo.

They aren't known to go bad fast, but after you have had the servo for awhile and put some use on it they can cause problems, and with this it's one less thing to worry about.
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Old 01-08-2010, 01:51 PM   #8
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wow that crazy whats next


http://www.hitecrcd.com/servos/show?name=HS-M7990TH
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Old 01-08-2010, 01:57 PM   #9
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Detailed Feature Descriptions
# High Resolution Magnetic Digital Ecoder
# G2.5 12 bit Digital Brogrammable Circuit
# Titanium Gear Train (MK first gear)
# Ultra Performance Coreless Motor
# Integrated Heatsink Case
# (8) O-Rings for Water/Dust/Fuel protection
# Dual Ball Bearing Supported Output Shaft
# 10% larger than a HS-7955TG

i dont think this is going to be for 8th scale. probably 5th scale steering i bet
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Old 01-08-2010, 02:08 PM   #10
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1.57" x 0.78" x 1.45 - 7955
1.72" x 0.88" x 1.57 - 7990
2.60" x 1.20" x 2.30 - 5th Scale HS-805MG


I don't think it's for a 5th scale. It doesn't come closer to those sizes and they wouldn't put it in the Standard Servo Section. It would be under the Giant Servo Section on the Panel to the Right on the Hitec Home Page.

http://www.hitecrcd.com/servos/list?category=47
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Old 01-08-2010, 02:10 PM   #11
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I think there is plenty of play in the Losi Tray for this servo. If not your shaving hardly anything off the radio tray to make it fit.

Description states on the page for Buggies, Truggies, Power Boats, Large Scale Aircraft.
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Old 01-08-2010, 03:30 PM   #12
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Quote:
Originally Posted by RJNicholson View Post
1.57" x 0.78" x 1.45 - 7955
1.72" x 0.88" x 1.57 - 7990
2.60" x 1.20" x 2.30 - 5th Scale HS-805MG


I don't think it's for a 5th scale. It doesn't come closer to those sizes and they wouldn't put it in the Standard Servo Section. It would be under the Giant Servo Section on the Panel to the Right on the Hitec Home Page.

http://www.hitecrcd.com/servos/list?category=47
oh, duh. yeah i never thought about that
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Old 01-08-2010, 08:58 PM   #13
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.18 is way too slow for buggy or truggy. The JR 9100 HVS is .06.
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Old 01-09-2010, 01:41 AM   #14
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Not in steering it's not. I know there are better options, but this would be perfecftly fine for steering. I wouldn't recommend it for throttle though.

My 7950HV/JR9100HVt is .12 @ 7.4 I might be off a few, but thats not much faster for steering (to the hand and eye that is). I use the HVs in my throttle.
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Old 01-09-2010, 04:57 AM   #15
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.18 is pretty slow but man that's cool. I want one.
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