Just remember the the 1268 is a high voltage servo. You need to run it at 7.4v to take advantage of the specs. If you can't run 7.4v the 1283 I mentioned earlier is a 6v servo at .13 speed and over 400oz torque.

Roger that. I have 7V available with a VTX8. If it were a linear graph of torque per volt. I would get 308 in-oz out of the 347 inoz servo. Before doing that calc, I didn't realize I'd loose that much with .4V less available.

I believe that servo at 7.4v is a .10 or .11 speed so you will lose some speed as well. Maybe the 1283 would be a better choice with about the cost.

Will Tekno aluminum servo horns fit on a Savox servo? The arm drops at the end and Savox servos are pretty level across the top.
_______________________

EDIT:

Found the answer.

The only reason I'm not looking at the Hitec 7955 is because I already spent $15 on the 25T Tekno horn already. I don't wanna waist any more cash. It's not even big enough to use as a paper weight.

You actually have up to 8v for the bec on the VTX8 so you can run the full 7.4v to the servo.

Yes Its close to the box but I have not had issues with the Tekno horn and savox servos.

You will save A lot of battery and heat due to less wheel spin

Can someone explain to me what current limiting exactly does? Does it just decrease the rate of acceleration? Does it affect top speed? Does it limit the total power a motor can put out? I really need a explanation of this feature haha.

Also is this feature available in the HW xerun 150a?

It limits acceleration mostly, if you go overboard with it will affect top speed.

Hobbywing has the "punch" setting but i din't know if that does exactly the same.

I've been going through this also. I tried a Savox SB2271SG (.065 / 277.0 @7.4) and it was not enough. I run the 2271 in my buggy and it was fine, but it just fell short for the truggy. I just switched it up to a SV1270TG (.11 / 487.7 @7.4)

I underestimated the weight and forces on the large spinning truggy tires. My suggestion is get the strongest servo you can with out getting too slow. I prefer very fast servos so picking a truggy servo was tough for me.

From Tekin's website:
"Current Limit: Adjusts throttle response during acceleration. Low values allow less amounts of current to pass to the motor, high values alow higher amounts. Putting the slider in the full UP position disables the Current Limiter and allows full potential power of the system."

The way I explain this is when accelerating and creating high amp draw situations the current limiter puts a cap on the amp draw. This results in a softer,smoother acceleration. It does not change the throttle profile or curve, while still letting the motor and speedo to rev out to full throttle and still reaching the same top speed.

As for the HW stuff, I can't help ya there.

The more current, the more torque, or in other words, the more advantage the motor has against external resistance such as weight and roll resistance (to keep it simple). So as current increases the less those two things matter during acceleration. Too much current will with lots of weight and little roll resistance = wheel spin. Lots of current with little weight and lots of traction = quick acceleration ...if the CG is low enough. Otherwise it will flip. so limiting the current will help prevent wheelspin when traction is low and will prevent the front end from being too light when traction is high.

Will it effect speed? Top end....let's just say that it doesn't stop the motor from reaching full RPM. It mostly acceleration. It takes way more current to make the truggy change speeds than it does to make it maintain speed. In fuel speak, this is why city mileage on a typical regular fuel passenger vehicle is lower for stop-n-go city driving than on a long highway trips.

Not according to their advertisements nor the manual. I haven't tried to adjust it further than 7 to see if it would go that far. I just bought a 2273 from the For Sale section. I should be able to squeeze .11/350 out that with 7V.

This was discussed in the Viper thread, they haven't updated all of their information but it does go up to 8v. Plug in the Progauge, you will see it goes past 7v.

At my age .15 is lightning fast! LOL It might be a tad slow on a small tight track but I race 1/8 on a huge outdoor track, it has plenty of speed for me. Plus you can turn up the power on your esc, that helps a lot.

Thanks for the responses. I feel the "punch" feature in the HW esc is the same as current limiting, but I am not sure about that. A HW user could help us with that ...

The Savox steel gear servos hold up, I've never broken a gear or any thing in a Savox since I switched over from Hitec many moons ago. Main reason I don't use the 1232 is the size, it a little over 7mm taller. Plus like you said it's 27gr heavier too, my God how could I possibly handle a 9lb truggy with an extra 27g. LOL Enough funny stuff, I don't like the size.