stripped 2 servos, have a question?

[rockbound]

Ok so i had the buggy out last weekend and today. in that time i have stripped 2 hitec hs 645mg servos. was able to fix one of them by ripping it apart and turning the gear that stripped. Now it uses the other good half of the gear! I tried using servo savers originally and they just didn't hack it. The steering sucked! But my question is this.

I was looking in a tower hobbies mag and under the servos it lists that the hs 645mg has metal gears and the hs 635hb has karbonite gears. Both are high torque. The 635hb is cheaper, but is it stronger? the paragraph above says the karbonite gears are 4 times stronger than the nylon gears but it has no reference to the metal gear servos. so which one is stronger?
And, can you buy rebuild kits for the servos?

Thanks

[Train Of Thought]

I don't know which is stronger, but I'd go for the cheaper servo as you can replace the gears ~$10 cheaper... because you WILL be busting gears.

Metal gear set (645)
Karbonite gear set (635)

[SPEED_RACER]

use a better servo saver,like the kimbrough 124 or ofna hd.you're running this in a buggy and not crawling i'd assume.if you're crawling disredard my statement.even a metal geared servo will have a harsh time in a buggy going at speed.most every one gets away with it in crawlers only cause they're not doing any kind of speed to give the servo a hard hit

[Train Of Thought]

Rockbound, as I said, I don't know. It would seem that metal would be stronger, but the crazy composites they are coming up with these days make me second guess this kind of stuff.

[rockbound]

Originally Posted by SPEED_RACER

use a better servo saver,like the kimbrough 124 or ofna hd.you're running this in a buggy and not crawling i'd assume.if you're crawling disredard my statement.even a metal geared servo will have a harsh time in a buggy going at speed.most every one gets away with it in crawlers only cause they're not doing any kind of speed to give the servo a hard hit

It is in a crawler, i just call it a buggy because I am used to calling them rock buggies. But it is a crawler!

[rockbound]

Originally Posted by Train Of Thought

Rockbound, as I said, I don't know. It would seem that metal would be stronger, but the crazy composites they are coming up with these days make me second guess this kind of stuff.

Sorry I noticed that you had said you didn't know after I posted my response. I have deleted it.

[JasonInAugusta]

I've been running a pair of Airtronics 359 servos for over a year now and have yet to have one fail.

I'm not just running them in one truck, either. I swap them from one truck to the next.

No servo savers either.

They're not cheap, but I think they're well worth the coin.

[SVEN]

Originally Posted by JasonInAugusta

I've been running a pair of Airtronics 359 servos for over a year now and have yet to have one fail.

I'm not just running them in one truck, either. I swap them from one truck to the next.

No servo savers either.

They're not cheap, but I think they're well worth the coin.

Jason, is the 359 a digital servo?

[rockbound]

Originally Posted by JasonInAugusta

I've been running a pair of Airtronics 359 servos for over a year now and have yet to have one fail.

I'm not just running them in one truck, either. I swap them from one truck to the next.

No servo savers either.

They're not cheap, but I think they're well worth the coin.

Thanks, I will have to check into them, sounds to me like they are the way to go.

[JasonInAugusta]

Originally Posted by SVEN

Jason, is the 359 a digital servo?

http://www2.towerhobbies.com/cgi-bin...&I=LXCHB2&P=ML

A note on tower's site about other Airtronics servos using coreless motors:

A note on coreless motors, a conventional servo motor has a steel core armature wrapped with wire that spins inside the magnets. In a coreless design, the armature uses a thin wire mesh that forms a cup that spins around the outside of the magnet eliminating the heavy steel core. This design results in smoother operation and faster response time.

Fish thought that, for some odd reason, my servos were faster than everyone else's at Buford.

[dabid]

Going a bit off topic now......but would a coreless motor be the same as a brushless? From that little description, it sounds like it. Either way, that servo would be an amazing performer, but I think I'll just save $100 and go with a Blue Bird though. ;)

[ronniehertog]

im using an servo whit karbonite gears (hitec 635or something like that), and i don't really like then, ive stripped 2 sets already so i just replaced then whit metal ones

ronnie

[Mad Scientist]

Here is a link to a little info about coreless motors, and a pic for comparison.

Coreless Motors

[chafey]

for the price of the airtronics servos you can get the hitec tg series and never worry about it

[rockbound]

Originally Posted by chafey

for the price of the airtronics servos you can get the hitec tg series and never worry about it

do you have a link to those? Why won't i have to worry about them? I am not familiar with them!

Thanks guys for all your help. I stripped 2 more hi tec servos since i posted this thread. I have bought the airtronic servos, I will give them a try. I would like to check out the hitec tg servos though!