single servo steering

[hoadley]

i was wondering if anyone knows if a single hitec 645 is enough power to turn wheels, or should i go bigger?

[nitrostarter]

I had one in my Revo. It works fine, however after experience higher quality servos like the 7955TG or JR9100T, the 645 is a huge step downward.

If you can spring for something a bit better in quality, I would suggest. the Futaba 9351 is also very nice.

[Arct1k]

645 as a single - I would say maybe but not very well...

[Bondonutz]

You'd be happier with any of the fore mentioned servos or anyhting with at least 200+oz of torque.

[nitrostarter]

Also keep in mind, the increase torque of the servo allows the servo to perform at advertised speeds.

[magman]

I run the JR 9100T in my truggy and it's perfect

[mbx1275]

love my 7955tg hit up ebay there only 100 bucks or so

[hoadley]

Thanks to all was just wondering since i had a 645 laying around from when i put a bigger one on my crawler. i had a Doubt since im running big e-maxx brushless tires.

[BrianG]

Yeah, this question is about as difficult to answer as "how much current will my BL motor pull?". Loading plays a big role. And by "loading", I mean: weight of the vehicle, the bellcrank arm lengths, tire friction (which is less when the tires are moving). etc. And that's assuming the EPA is set right.

I did a test a while back where I hooked up a Hitec HS-5945MG steering servo (180oz-in torque and 0.13 sec speed at 6v) in my Hyper 8 buggy, and measured the current at 6v under typical (moving vehicle) conditions. I saw peaks of 2.4A with an average of 0.6A.

[hoadley]

anyone ever try these?http://www.crawfordperformanceengine...ervo-p-18.html

[Bondonutz]

Heres the same thing but you get 2 servos for under 30.00 delivered.

http://cgi.ebay.com/2-x-MG996R-Metal...mZ390152000083

[mistercrash]

Originally Posted by Bondonutz

Heres the same thing but you get 2 servos for under 30.00 delivered.

http://cgi.ebay.com/2-x-MG996R-Metal...mZ390152000083

I bought those to see how they are, I wish I had my $30 back They are slow and lack precision in centering.

[mbx1275]

I killed two of them in my losi comp crawler in a pack each useless I use a spare spektrum z590 in the now so much better and about the same price