How much servo torque do you really need????
05-02-2011, 01:49 AM
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RE: How much servo torque do you really need????
150oz-in minimum for steering. 100oz-in for brake/throttle.
BUT...it also depends on the quality of the servo. A cheap 150oz-in servo probably won't last long on a rough track, where a good digital one with metal gears and case would be fine. I use high quality 200oz-in servos on all my 1/8th cars, just for the peace of mind.
BUT...it also depends on the quality of the servo. A cheap 150oz-in servo probably won't last long on a rough track, where a good digital one with metal gears and case would be fine. I use high quality 200oz-in servos on all my 1/8th cars, just for the peace of mind.
05-02-2011, 01:58 AM
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RE: How much servo torque do you really need????
ORIGINAL: lez1troubles
Lots but not to much.
Hope this helps.
Hows the MP9 coming along???
Lots but not to much.
Hope this helps.
Hows the MP9 coming along???
It's coming along fine and drives wonderful, however my Hitec servos died so i'm looking for a replacement.
05-02-2011, 04:38 AM
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RE: How much servo torque do you really need????
Check out the FUTABA line up of 1/8 scale buggy servo's.
Good price and last along time.
The FUTABA S3305 is a capable steering that hauls an whopping 8+Kg. Thats plenty.
I like the original Digital high speed servo from KYOSHO for the throttle/breaks.
Good price and last along time.The FUTABA S3305 is a capable steering that hauls an whopping 8+Kg. Thats plenty.
I like the original Digital high speed servo from KYOSHO for the throttle/breaks.
05-02-2011, 06:42 AM
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RE: How much servo torque do you really need????
i'm always testing the waters for cheaper alternatives, i just got one of those "pppservos" off ebay.
244oz @ 6v
.13 sec @ 6v
ball bearing, digital and coreless for 40 bucks delivered.
first impressions are pretty good. the only thing i can say bad about it is that it's plastic cased. otherwise it seems very strong and fast. good returning to center. gears are nice, no burrs, no slop.
i haven't given it a true test yet as i'm waiting on a motor. but all signs point to "good deal".
244oz @ 6v
.13 sec @ 6v
ball bearing, digital and coreless for 40 bucks delivered.
first impressions are pretty good. the only thing i can say bad about it is that it's plastic cased. otherwise it seems very strong and fast. good returning to center. gears are nice, no burrs, no slop.
i haven't given it a true test yet as i'm waiting on a motor. but all signs point to "good deal".
05-02-2011, 09:52 AM
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RE: How much servo torque do you really need????
i use the Futaba BLS351 for throttle/brake and Futaba S9157 for steering in my buggy, love the servos, very smooth and and feel stronger and faster than they are. my dad ran my buggy one weekend and now he said he wants the same servos as me bc of how smooth and responsive they are... he uses the Hitec 7955 and hobbico CS-170 (which are the same exact servos) for his truggy, they last for ever and are good for the money too.... ive ran Futaba, hitec, JR, Savox and airtronics servos and by far the Futaba are my favorite then hitec then airtronics (just didnt like the stiffness of them) and i ran JR 9100T for 3 races and sold it, and savox i ran for one quart and sold it....
when i was first starting i was trying to go cheap on servos and found myself spending more in the long run, i recommend buy good and buying once, it will save you money in the long run.
when i was first starting i was trying to go cheap on servos and found myself spending more in the long run, i recommend buy good and buying once, it will save you money in the long run.
05-02-2011, 11:13 AM
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RE: How much servo torque do you really need????
Which Hitec servos died?? What model numbers? Were the end points set?
ORIGINAL: All-or-Nothing
It's coming along fine and drives wonderful, however my Hitec servos died so i'm looking for a replacement.
ORIGINAL: lez1troubles
Lots but not to much.
Hope this helps.
Hows the MP9 coming along???
Lots but not to much.
Hope this helps.
Hows the MP9 coming along???
It's coming along fine and drives wonderful, however my Hitec servos died so i'm looking for a replacement.
05-02-2011, 02:51 PM
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RE: How much servo torque do you really need????
ORIGINAL: tommygun32
Which Hitec servos died?? What model numbers? Were the end points set?
Which Hitec servos died?? What model numbers? Were the end points set?
They were 5755MG. Everything was fine and the the steering started getting really weak and the throttle would only work no brakes. I checked all the things that could be wrong like battery, RX etc. but they are both dead.
Just scooped up 6 EXI d226f servos from a friend for a quick solution. Still searching for servos unless these EXI ervos prove to be reliable.
05-02-2011, 03:09 PM
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RE: How much servo torque do you really need????
ORIGINAL: rccheech
The 79 series from hitec are the way to go.
The 79 series from hitec are the way to go.
Could be I guess. I know I just spent $150 on these 2 servos that are now paperweights. Gonna give Hitec a call tomorrow.
I hope these EXI servos are pretty good because he uses them in his D8 and Serpent and has no issues with them.
05-02-2011, 08:28 PM
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RE: How much servo torque do you really need????
ORIGINAL: All-or-Nothing
Could be I guess. I know I just spent $150 on these 2 servos that are now paperweights. Gonna give Hitec a call tomorrow.
I hope these EXI servos are pretty good because he uses them in his D8 and Serpent and has no issues with them.
ORIGINAL: rccheech
The 79 series from hitec are the way to go.
The 79 series from hitec are the way to go.
Could be I guess. I know I just spent $150 on these 2 servos that are now paperweights. Gonna give Hitec a call tomorrow.
I hope these EXI servos are pretty good because he uses them in his D8 and Serpent and has no issues with them.
05-02-2011, 08:29 PM
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RE: How much servo torque do you really need????
ORIGINAL: rccheech
You gotta make sure you end points are set no matter what servos you use, otherwise they will burn up fast
You gotta make sure you end points are set no matter what servos you use, otherwise they will burn up fast
05-02-2011, 09:36 PM
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RE: How much servo torque do you really need????
ORIGINAL: rccheech
You gotta make sure you end points are set no matter what servos you use, otherwise they will burn up fast
You gotta make sure you end points are set no matter what servos you use, otherwise they will burn up fast
End points were set fine but I will fill out the form online.
05-04-2011, 05:23 AM
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RE: How much servo torque do you really need????
Just got hold of a FUTABA S9157 Digital servo, Max Torque is 425 Oz-inch and its fast,bit expensive though.
bit expensive though.
05-04-2011, 05:38 AM
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RE: How much servo torque do you really need????
ORIGINAL: lez1troubles
Just got hold of a FUTABA S9157 Digital servo, Max Torque is 425 Oz-inch and its fast,bit expensive though.
Just got hold of a FUTABA S9157 Digital servo, Max Torque is 425 Oz-inch and its fast,
bit expensive though.
05-04-2011, 05:41 AM
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RE: How much servo torque do you really need????
ORIGINAL: lez1troubles
Just got hold of a FUTABA S9157 Digital servo, Max Torque is 425 Oz-inch and its fast,bit expensive though.
Just got hold of a FUTABA S9157 Digital servo, Max Torque is 425 Oz-inch and its fast,
bit expensive though.
05-04-2011, 09:02 AM
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RE: How much servo torque do you really need????
ORIGINAL: Foxy
This is primarily a plane servo, but ok, whatever floats your boat. I hope you have a SERIOUS receiver battery (a nicd or a lipo) or the servo will be starved for current and operate eratically under load. A regular cheap 6v NiMH reciever pack will struggle to deliver the current it needs, and it will also drain your battery much faster than most servos. I really wouldn't use this servo in a car, it's massive overkill.
ORIGINAL: lez1troubles
Just got hold of a FUTABA S9157 Digital servo, Max Torque is 425 Oz-inch and its fast,bit expensive though.
Just got hold of a FUTABA S9157 Digital servo, Max Torque is 425 Oz-inch and its fast,
bit expensive though.
05-04-2011, 11:23 AM
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RE: How much servo torque do you really need????
ORIGINAL: jmaxey51
that is not true at all, that servo drains the battery less than the BLS servos... there are plenty of servos out that have just as much torque. they are plane servos but they actually can take more abuse than ones made for cars..... and just a little more to add, if you know racing then you probably heard of Ryan Lopez (100% losi driver), he runs that servo on his buggy/truggy, he runs the same setup as i do....
ORIGINAL: Foxy
This is primarily a plane servo, but ok, whatever floats your boat. I hope you have a SERIOUS receiver battery (a nicd or a lipo) or the servo will be starved for current and operate eratically under load. A regular cheap 6v NiMH reciever pack will struggle to deliver the current it needs, and it will also drain your battery much faster than most servos. I really wouldn't use this servo in a car, it's massive overkill.
ORIGINAL: lez1troubles
Just got hold of a FUTABA S9157 Digital servo, Max Torque is 425 Oz-inch and its fast,bit expensive though.
Just got hold of a FUTABA S9157 Digital servo, Max Torque is 425 Oz-inch and its fast,
bit expensive though.
Hope you see what I'm saying. There's a reason Futaba themselves recommend a nicad or lipo for this servo.
I have quite some experience with high power servos. My FG MT is running a 1200oz-in
05-04-2011, 12:26 PM
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RE: How much servo torque do you really need????
ORIGINAL: Foxy
Not true at all? It's completely true. Whether you CARE or not is another matter. The fact that you can get away with it in a car isn't under dispute. The fact that it's an unnecessarily high current draw servo is also a fact. I'm not disputing you can use it in a car, but a decent 200oz-in would be a much better choice. And I say again, if you want to actually utilise all 400+oz-in, you are gonna need more current than a standard rx pack will give you. To be fair, you are unlikely to ever cause it to pull more than 300oz-in and that would be burst current from a sideways landing or hitting a big bobble in the track under full lock, and therefore the current draw MAY never be a problem, however, if it were regularly subjected to full load, it would kill a regular rx pack pretty quick. Not something Ryan Lopez is worried about I expect, being sponsored
Hope you see what I'm saying. There's a reason Futaba themselves recommend a nicad or lipo for this servo.
I have quite some experience with high power servos. My FG MT is running a 1200oz-in
Not true at all? It's completely true. Whether you CARE or not is another matter. The fact that you can get away with it in a car isn't under dispute. The fact that it's an unnecessarily high current draw servo is also a fact. I'm not disputing you can use it in a car, but a decent 200oz-in would be a much better choice. And I say again, if you want to actually utilise all 400+oz-in, you are gonna need more current than a standard rx pack will give you. To be fair, you are unlikely to ever cause it to pull more than 300oz-in and that would be burst current from a sideways landing or hitting a big bobble in the track under full lock, and therefore the current draw MAY never be a problem, however, if it were regularly subjected to full load, it would kill a regular rx pack pretty quick. Not something Ryan Lopez is worried about I expect, being sponsored
Hope you see what I'm saying. There's a reason Futaba themselves recommend a nicad or lipo for this servo.
I have quite some experience with high power servos. My FG MT is running a 1200oz-in
05-04-2011, 01:29 PM
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RE: How much servo torque do you really need????
ORIGINAL: jmaxey51
im sponsored by futaba also, so i know what these draw out, the BLS351 pulls more current than the S9157, just saying. it may be a little over kill but i would rather have plenty instead of not enough, for pro level racing IMO you need 250oz-in or more for steering. ive ran less and you can really tell it. ... and futaba say NiCD, NiMh or LiFe is better becuase they cant handle high voltage
ORIGINAL: Foxy
Not true at all? It's completely true. Whether you CARE or not is another matter. The fact that you can get away with it in a car isn't under dispute. The fact that it's an unnecessarily high current draw servo is also a fact. I'm not disputing you can use it in a car, but a decent 200oz-in would be a much better choice. And I say again, if you want to actually utilise all 400+oz-in, you are gonna need more current than a standard rx pack will give you. To be fair, you are unlikely to ever cause it to pull more than 300oz-in and that would be burst current from a sideways landing or hitting a big bobble in the track under full lock, and therefore the current draw MAY never be a problem, however, if it were regularly subjected to full load, it would kill a regular rx pack pretty quick. Not something Ryan Lopez is worried about I expect, being sponsored
Hope you see what I'm saying. There's a reason Futaba themselves recommend a nicad or lipo for this servo.
I have quite some experience with high power servos. My FG MT is running a 1200oz-in
Not true at all? It's completely true. Whether you CARE or not is another matter. The fact that you can get away with it in a car isn't under dispute. The fact that it's an unnecessarily high current draw servo is also a fact. I'm not disputing you can use it in a car, but a decent 200oz-in would be a much better choice. And I say again, if you want to actually utilise all 400+oz-in, you are gonna need more current than a standard rx pack will give you. To be fair, you are unlikely to ever cause it to pull more than 300oz-in and that would be burst current from a sideways landing or hitting a big bobble in the track under full lock, and therefore the current draw MAY never be a problem, however, if it were regularly subjected to full load, it would kill a regular rx pack pretty quick. Not something Ryan Lopez is worried about I expect, being sponsored
Hope you see what I'm saying. There's a reason Futaba themselves recommend a nicad or lipo for this servo.
I have quite some experience with high power servos. My FG MT is running a 1200oz-in
I raced buggies long ago, but really I'm a 1/10th nitro on road man. As long as we agree its overkill and that it will work a standard rx pack hard, I'm happy
05-04-2011, 09:58 PM
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RE: How much servo torque do you really need????
It works good, no problem with the batteries I use and it dont give my receiver no problems.
Could I use a 7.2V NiCD or Life battery pack???
Yes it's over kill but so am I.
By the way, I've put it in my KYOSHO MP7.5 MK3 just for fun buggy.
I was using a FUTABA S3305 which I thought was a good servo for the steering, did'nt have any problems with it in the years that its been up front, going to put it in as the throttle servo.
Could I use a 7.2V NiCD or Life battery pack???
Yes it's over kill but so am I.
By the way, I've put it in my KYOSHO MP7.5 MK3 just for fun buggy.
I was using a FUTABA S3305 which I thought was a good servo for the steering, did'nt have any problems with it in the years that its been up front, going to put it in as the throttle servo.
05-05-2011, 12:30 AM
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RE: How much servo torque do you really need????
To be honest, unless you are really working the servo hard, you will probably be fine with a high quality nimh pack. It might be a good idea to check how hot the battery is after a race. Don't use 7.2v, the servo is rated for 6. A LiFe pack would be a good investment for peace of mind probably, but don't take my word for it, wait for jmaxey to post again.