2wd carpet buggy

[Matthew123]

What does everybody run for ounces in torque for servos for a 2wd 10th scale carpet off-road buggy

 

[DavidB1126]

Youd want to pay more attention on the speed of the servo rather than the torque. Id look for anything .10/60 to .065/60. Anything under would be too fast and anything over would be too slow. Since carpet is high grip and often most are super tight turns, you'd want the speed. And if it is too fast you can find tune with servo dual rate and expo depending which radio you have/use.

Torque wise, don't really need much since 2wd front buggy wheels are quite light. Even slim wheels for carpet. Anything from 15-25kg will be more than enough. 200oz in +

I use a xpert 4000LV in my 2wd. (22 5.0) As it is more appropriate. It's .08 transit speed and 242oz. Perfect for 2wd and the lower budget esc (BEC limits) I have in. Used to run a Power HD B5S HV which is even faster and that's still a great servo although I switched it into my 4wd as it is more appropriate for that. But noting that these are both standard sized servos so the fit is kinda tight in a 2wd Bug. Most use low profile servos. I was at first, looking at the ProTek 140T but I just couldn't beat the price of the Power HD. Especially as it's more suitable for putting in different cars if I needed to.

 

[CertifiedMike]

I just bought a Reef's 300 that I'm gonna try running in 4x4 carpet. If I can get 7.4v to it, I'll get 270, 310 @ 8.4v.

If not, Reef's Raw 500 should have me covered.

Those 300's should be amazing in a 2wd!!!

 

[CertifiedMike]

Youd want to pay more attention on the speed of the servo rather than the torque. Id look for anything .10/60 to .065/60. Anything under would be too fast and anything over would be too slow. Since carpet is high grip and often most are super tight turns, you'd want the speed. And if it is too fast you can find tune with servo dual rate and expo depending which radio you have/use.

Torque wise, don't really need much since 2wd front buggy wheels are quite light. Even slim wheels for carpet. Anything from 15-25kg will be more than enough. 200oz in +

I figure the extra fast servo will make up for my extra slowness.

 

[DavidB1126]

I figure the extra fast servo will make up for my extra slowness.

Lol. Having it too fast could make the car feel more twitchy and uncontrollable. That's why most people tune their D/Rs. But ideally .10/60 from .08/60 is the range where it is good for everyone.

 

[CertifiedMike]

Lol. Having it too fast could make the car feel more twitchy and uncontrollable. That's why most people tune their D/Rs. But ideally .10/60 from .08/60 is the range where it is good for everyone.

I figure i'll be slowing the rate some. Then again, I might not even notice twitchy.

 

[DavidB1126]

Yea, in my 4WD, when I switched from my Xpert to Power HD, going from .08 to .065 on the speed. My first club race with that change it felt really twitchy and I couldn't get a grip on it but by the end of the day near the main I got used to it. Didn't even mess with my D/Rs, just adjusted to it. But anything .05 and under is where it starts getting too much, especially for the BEC depending on what the amp rate it is. Low amp bec + super fast servo doesn't mix that well. But 3-5A bec should be enough for most uses. Especially most cases you aren't running at that torque limit or full use of the servo. Lots of science behind everything. Lol. The stalling point, thats the word I was looking for, for that last sentence.

 

[CJSRCLIFE]

I run an older Savox SB-2263MG-CE Ryan Cavalieri edition servo my Dad used to run in his very first modern race buggy so who knows how old that servo is and it still works for me many years later. I'd do another Savox or maybe try a Pro-Tek servo in my next racing build since i'm kind of overdue for one.

 

[DavidB1126]

Savox SB-2263MG

Looking at the specs, at 6v, you are running .076/60 @ 138 oz in. Perfect for a 2wd both speed and torque wise so I see why you like to run it.
In theory, Low Profile servos do make less torque than standard case servos. Just like how on brushless motors for the actual car, longer the can, more rotor surface area, more torque. Same goes with servos. Plus like I was saying earlier, 2wd doesn't require whole lots of torque and alot of people do run Low Pros in 2wd buggy and truck so its well respected here. I just like to run standard sized servos in mine so I can take it out for other project cars if needed, or once/if I sell the car its in, I can still use it with other cars no issues.

 

[CertifiedMike]

I was and still might put an LP in this car.
LP servos are lighter too.

 

[DavidB1126]

LP servos are lighter too.

100 percent true. Never even thought about it. mostly because my car is light enough with a standard size servo. Right at the ROAR minimum weight limit. Lol.
There was one time it was lighter than the limit. I just taped a quarter on my battery to pass tech.

 

[CJSRCLIFE]

Looking at the specs, at 6v, you are running .076/60 @ 138 oz in. Perfect for a 2wd both speed and torque wise so I see why you like to run it.
In theory, Low Profile servos do make less torque than standard case servos. Just like how on brushless motors for the actual car, longer the can, more rotor surface area, more torque. Same goes with servos. Plus like I was saying earlier, 2wd doesn't require whole lots of torque and alot of people do run Low Pros in 2wd buggy and truck so its well respected here. I just like to run standard sized servos in mine so I can take it out for other project cars if needed, or once/if I sell the car its in, I can still use it with other cars no issues.

Yeah, It used to be in my Dad's first ever race car a 1st gen Schumacher Cougar Laydown which my Dad sold a long time ago and he now runs a Yokomo YZ2 CAL3 and Team Associated T6.2. Here's some pics of his old buggy he bought off eBay used in 2021.