Revo Single Steering Servo

[SuperMaxx83]

well i have running stock steering and i have heard alot fo good things about only running 1 servo and i have done a search and can't find much on what servo to run i see a few with hi tech 645 and a couple other ones but i would like speed with torque what are my options i am running the stock radio and i have done the steering mod to get more steering and i also need to know if i go 1 servo with the pro line steering arm if i am going to loose my extra steering if you need more information let me know also links to buy the servos will help also thanx guys

 

[vbgagnon]

This has been covered in the revo section here on rcnt. But I'll give my info here.

First off how much do you want to spend on a servo? You can spend 40 all the way up to 100+

And any servo that is not digital will work with the stock servo.

 

[SuperMaxx83]

well i would like to spend anywhere between40 to 60 if there isnt that much of a difference then i would like to spend 40ish i am using the stock reciever so i need one to work with that and i tried the search and i have found just a few but from a while ago so i figured with new servo out i would see what everyone suggest

 

[vbgagnon]

If I were you I'd go with a hitec 645mg. its a time prooven reliable servo. Fairly strong with ok speed.

 

[jetmechG550]

JR 650 costs about $50

 

[olds97_lss]

JR 650 costs about $50

JR 650M
Torque: 142 oz in @ 6V
Speed: .17 sec/60 degrees @ 6V
Dimensions (WxLxH): 1.55 x 0.73 x 1.46 in (18.5 x 39.4 x 37.1mm)
Weight: 1.6 oz (45.4 g)
Bearing: Single
Motor Type: Cored
Gears: Metal

Hitec 645MG
Speed: 0.24 sec/60 degrees at 4.8V
0.20 sec/60 degrees at 6.0V
Torque: 106.93 oz-in at 4.8V (7.7 kg-cm)
133.31 oz-in at 6.0V (9.6 kg-cm)
Length: 1.59" (40.6mm)
Width: 0.77" (19.8mm)
Height: 1.48" (37.8mm)
Weight: 2.11oz (60g)

The 650M is a little bit faster (15%), little bit stronger (7%) and a little more expensive (20%).

I have a 645MG and whish I had faster and stronger... I'll be buying a 650M when I have the $.

 

[vbgagnon]

Good point guys, and doesn't JR have a killer warrentee?

 

[jetmechG550]

3 years I believe. I've been using the 650 on both my Revo and buggy and have not had one issue with it. I've also been using one for a throttle servo (not the same one) and only had issue with one of them and I believe it was my fault. I plasti-dipped it and think it overheated. Anyway, I just switched my T/B servo on the XB8 to an Airtronics digi but I'm still running the 650 on the Revo, XB8 and LSP for steering.

 

[SuperMaxx83]

well i did some searching and found a couple of high torque sevo and i would like all of your opions on them and ket me know if you would or wouldnt go with them everyone is rated at 6.0 volts (witch is what i run)

hobbico cs-70mg super torque 2bb .20 sec =133.3 oz=42.99
tower hobbies ts-70mg s2k supertorque 2bb .20sec=133.3 oz = 34.99
CIRRUS cs704/mg 13kg hi torque .15 sec =195 oz=34.99

these are just a couple that i have looked at i also looked at the jr 650 and the hitech 645 but i really like the cirrus and it has lots more torque and its faster then all of the above so let me know hwat you guys think

 

[Plaidfish]

Stick w/ JR, Sanwa (airtronics), Futaba, KOpropo and Hitec (I'm not too into them myself)....there's others I'm sure but htese brands you can be pretty sure alot of people will stand up and testify.....
the others are short term stuff...and anyone saying they are running one for years is pulling your chain......

 

[vbgagnon]

Plaid is 100% correct. The others aren't even worth looking at!

 

[SuperMaxx83]

ok i think i am going with the jr 650 because you guys say it better for racing and thats all i do with my revo so i will go that rought

 

[jon2]

I have been running the 645 MG in my Savage, then a JR 650 Then ran a MGT Steering servo. I like the 650 myself but it is still not fast enough like my 94538 servo. If you are going to race I recommend a servo with a fast transit time.

 

[SuperMaxx83]

what servo would you suggest for only racing who makes the 94538 and what kind of price

 

[vbgagnon]

Swana (airtronics) makes the 94358, depending on where you look the price ranges $85-120, I've got 10 gallons through mine between the 3 cars its been in.

 

[Jeep]

Excuse my ignorance, but, the Revo normally uses more than 1 servo for steering?

Jeep

 

[vbgagnon]

It comes with 2 steering servo's but most switch to one just because its easer to work on, and uses less battery power. Not only that but you can get more then enough power with one servo, so there is really no need for two.

 

[jetmechG550]

Yeah Jeep, most of the servos mentioned above have more torque by themselves then the stock two, plus they are faster. Also no fighting which wears down the battery.

I might add that once you pick a new servo get the heavy duty servo saver.

 

[Jeep]

Well,,The concept of 2 servos operating the same linkage would (in my mind) automatically create a "fight" between the 2 servos since it would be nearly impossible for them to go to the same exact position under the same control signal and still have a fairly tight steering linkage. Or, is there a "pivotal" connection in the linkage such that one servo is allowed to travel further than the other without loss of exactness in alignment?

I guess I'd have to see it to understand how the problems are overcome.

Jeep

Learning more everyday

 

[olds97_lss]

Well,,The concept of 2 servos operating the same linkage would (in my mind) automatically create a "fight" between the 2 servos since it would be nearly impossible for them to go to the same exact position under the same control signal and still have a fairly tight steering linkage. Or, is there a "pivotal" connection in the linkage such that one servo is allowed to travel further than the other without loss of exactness in alignment?

I guess I'd have to see it to understand how the problems are overcome.

Jeep

Learning more everyday

Nope. You got it right. There is always some "fight" between the servos. Although, if your patient enough, it does have 2 little turnbuckles that you can adjust for each servo until they stop fighting one another at their home position.