• Welcome to RCCrawler Forums.

    It looks like you're enjoying RCCrawler's Forums but haven't created an account yet. Why not take a minute to register for your own free account now? As a member you get free access to all of our forums and posts plus the ability to post your own messages, communicate directly with other members, and much more. Register now!

    Already a member? Login at the top of this page to stop seeing this message.

Cutting brakes?

Yes, it would take alot of running the rig in situations where you know when to use the cutting break to your advantage. Other wise you would just be using it in the wrong spots during a comp and could waste time and cost you points.

exactly! lol :ror: Can you imagine messing with 36 diff features on your tx in the middle of a course? You really gotta know whole rig and how the drive the damn thing before adding another weapon to your arsenal. "thumbsup"
 
Three wheels powering out your turn is tighter than two... It all depends on your set up. If you dont have the correct weight set up to use CB and/or enough traction on how your rig is positioned, then yes your statment is true. I understand where your comming from though.

It's obv that you would get more turning radius. Try a mock up test:

- Place your rig on the floor.
- Hold either your left/rear or right/rear tire in place. (1 tire)
- imagine 3x tires taking you through the turn.... super sharp, tighter than a conv dig set up.

That's all well and good in theory. However, on the course, you're not going to be able to "hold" a tire. Due to the high front weight bias that we run on our comp rigs in order to climb effectively, I just don't see this being the case. It may actually be the opposite that in many situations, you may not have enough traction at the rear in order to get the single wheel to act as a pivot without dragging it around too much.

It will be a useful tool in other situations, but it's not going to make a huge difference in your turn radius as your "test" suggests.
 
That's all well and good in theory. However, on the course, you're not going to be able to "hold" a tire. Due to the high front weight bias that we run on our comp rigs in order to climb effectively, I just don't see this being the case. It may actually be the opposite that in many situations, you may not have enough traction at the rear in order to get the single wheel to act as a pivot without dragging it around too much.

It will be a useful tool in other situations, but it's not going to make a huge difference in your turn radius as your "test" suggests.

You're forgetting that most comp rigs have more then enough torque to get the front tires spinning with no issues. If the tires are spinning, the one tire in the back will be more then enough to hold it, especially if you dial out a bit of rear esc to help provide some rear bit.
 
You're forgetting that most comp rigs have more then enough torque to get the front tires spinning with no issues. If the tires are spinning, the one tire in the back will be more then enough to hold it, especially if you dial out a bit of rear esc to help provide some rear bit.


FALSE. Rigs do not have enough grip for one rear tire to hold the rig to pivot around that tire. Tested many times over with the same results.

Try this test. Take a MOA, do a dig on a consistent surface and measure your turning radius. Take the back axle apart, take out one drive shaft (or take out the drive pin from the hub), lock that tire (if you have holes in the rims you can use a rod thru the hole in the rim to lock up against a link or axle tube) and try the same test. The turning radius will be larger.
 
Sorry, don't mean to come across mean, but try the tests and see how it comes out. I tried the following:

front tires powered, one rear locked and the other freewheel
front tires powered, one rear locked and the other with power

Neither had as tight a turning radius as both rear locked.

I tried on carpet, cement, tar and rocks. If the surface is slick, it drags the rear end around. If the traction is high, the front pulls the back around.
 
It's not about turning sharper, is about digging up hills, off camber situations, and decent turns.
 
exactly! lol :ror: Can you imagine messing with 36 diff features on your tx in the middle of a course? You really gotta know whole rig and how the drive the damn thing before adding another weapon to your arsenal. "thumbsup"

Just as it's painful to watch dig being overused when the line can easily be walked in 4WD.


I can't wait to try the cutting break. "thumbsup"
 
There's valid arguements on both sides of the field. Bottom line is it's really to early to speculate either way. We know the effects on a 1:1 rig, I run cutting brakes on mine, but how it will react in the real world on a 4-5lb rig is yet to be determined.

That being said I still can't wait :P
 
it seems to mee all it did was drag a tire?
unless more weight on the rear axle is applied to make this brake work properly...ill stick with Dig;-)
 
it seems to mee all it did was drag a tire?
unless more weight on the rear axle is applied to make this brake work properly...ill stick with Dig;-)


That is why tire placement is one of the big keys to being a good driver. Even using dig, tire placement can make you or break you. "thumbsup"
 
I think that the cutting brake will be useful in other situations and not just for turning in a tight radius. Point being that if you have tire that is in a crack there are times when you don't want it to spin because it sucks you into the crack more. This is where is see the advantage to cutting brakes as this allows you to reposition yourself to get out of the crack. Just my .02
 
I think that the cutting brake will be useful in other situations and not just for turning in a tight radius. Point being that if you have tire that is in a crack there are times when you don't want it to spin because it sucks you into the crack more. This is where is see the advantage to cutting brakes as this allows you to reposition yourself to get out of the crack. Just my .02


Exactly. The more implied use of the brake will be on transitions and situations that you described rather than flat ground turning ability.

On my 1:1 I rarely every use it just to turn sharper. Then again I have an arb in front "thumbsup"
 
Hello,

even if it work, i would be afraid that it will break. If you have a look inside
the rear housing i'm really scared about puting this tiny mechanic in. It would
be better if Axial solves the bearing/gear problem at first. Just my 2 Cents.

Greetings Frank
 
Hello,

even if it work, i would be afraid that it will break. If you have a look inside
the rear housing i'm really scared about puting this tiny mechanic in. It would
be better if Axial solves the bearing/gear problem at first. Just my 2 Cents.

Greetings Frank
Agreed.
 
Interesting idea that may prove to be advantageous. I think I will wait for its release and see it work in person before I come to a conclusion. Till then..."thumbsup"
 
Every Odyssey is allowed a little sarcasim once in a while. I right now don't have a xr10 i did but sold it off. I like watching where this rig is heading though. From my humble comp experience when the clock is ticking and the pressure is on keeping it simple is usually best. Last year I ran a berg with a 4pk and for me when the pressure is on it is hard enough to use dig and the throttle mixing to its Max potential throwing in more is gonna keep you really busy. Reliability aside I myself would have to think if the extra weight would be useful enough to warrant installing if it's function is limited to just a few specific instances.

The big thing you must remember is that ultimately to more weight you add to the rear you are probably going to end up offsetting by adding weight to the front. Much of that weight is going to end up in the front wheels. The problem there is that from a physics stand point rotating mass weighs as 4x more. Soon that 4oz you add to offset the servo will add up to one pound hammering away on all those lovely little pins in your cvds, and gearboxes.

Ever wonder why you see some of the guys around here with a bazillion posts are soon worried about weight balance? Now you do. Not only is a light rig more nimble it can end up being more reliable.
 
Last edited:
Every Odyssey is allowed a little sarcasim once in a while. I right now don't have a xr10 i did but sold it off. I like watching where this rig is heading though. From my humble comp experience when the clock is ticking and the pressure is on keeping it simple is usually best. Last year I ran a berg with a 4pk and for me when the pressure is on it is hard enough to use dig and the throttle mixing to its Max potential throwing in more is gonna keep you really busy. Reliability aside I myself would have to think if the extra weight would be useful enough to warrant installing if it's function is limited to just a few specific instances.

In all seriousness, if you know your rig, and controller, you should know when you'll need dig/mixing and have no problem finding it on the remote without even looking at it.

Sounds like pressure gets to you easily.
 
In all seriousness, if you know your rig, and controller, you should know when you'll need dig/mixing and have no problem finding it on the remote without even looking at it.

Sounds like pressure gets to you easily.

LOL no not really. Love when people try to make a tech conversation personal . Please really read what I was saying I finally got to finish my thogbts sorry on a phone at work.
 
Back
Top