14LikesTamiya F104 Pro!
10-21-2009, 11:29 PM
#1396
I'm a hopeful, I'm gonna do the hand work and switch back the the original 104 front, because this didn't happen hours before I made the switch. Man, I have alot to learn!Now I put in a futaba, it's old, but no issues. So, now I might put back the 103 front and re-test it...
10-22-2009, 05:15 AM
#1397
I have a dx3s and I run 35% expo in the steering. This is the single best adjustment you can make for the car. It was the difference btwn my 103 and 104. 104 is faster now that is dialed. If their is any question as to which car is better..have you seen DJ run his f104?
Expo will smooth out the car so you can push it harder.
Expo will smooth out the car so you can push it harder.
10-22-2009, 07:07 AM
#1398
I have a dx3s and I run 35% expo in the steering. This is the single best adjustment you can make for the car. It was the difference btwn my 103 and 104. 104 is faster now that is dialed. If their is any question as to which car is better..have you seen DJ run his f104?
Expo will smooth out the car so you can push it harder.
Expo will smooth out the car so you can push it harder.
10-22-2009, 12:05 PM
#1399
I have a dx3s and I run 35% expo in the steering. This is the single best adjustment you can make for the car. It was the difference btwn my 103 and 104. 104 is faster now that is dialed. If their is any question as to which car is better..have you seen DJ run his f104?
Expo will smooth out the car so you can push it harder.
Expo will smooth out the car so you can push it harder.
Here's what's goin on with me controller wise, it's a Traxxxas 27mhz am digital Top Qualifier, so it's hardly fancy. The other issue is I'm still learning the termonology (newb). Don't take this wrong, but I wish I knew what you guys were talkin about. I want to learn this $#!^. This is why I come here, to seek R/C knowledge from people who know what the're talkin about. I'm sure I'm about to get schooled right abouuuuut now!
10-22-2009, 02:05 PM
#1400
Hey fat,
Here's what's goin on with me controller wise, it's a Traxxxas 27mhz am digital Top Qualifier, so it's hardly fancy. The other issue is I'm still learning the termonology (newb). Don't take this wrong, but I wish I knew what you guys were talkin about. I want to learn this $#!^. This is why I come here, to seek R/C knowledge from people who know what the're talkin about. I'm sure I'm about to get schooled right abouuuuut now!
Here's what's goin on with me controller wise, it's a Traxxxas 27mhz am digital Top Qualifier, so it's hardly fancy. The other issue is I'm still learning the termonology (newb). Don't take this wrong, but I wish I knew what you guys were talkin about. I want to learn this $#!^. This is why I come here, to seek R/C knowledge from people who know what the're talkin about. I'm sure I'm about to get schooled right abouuuuut now!
The "exponential" adjustment for the steering servo, in this example, allows you to adjust how far the servo turns in relation to how far you turned the wheel, but the key here is that the servo will turn in a non-linear fashion.Here's two examples to give you some perspective.
A radio without "expo"...when you turn the wheel 1/2 way, the servo also turns 1/2 way. When you continue turning the wheel to full lock, the servo also continues turning to full lock.
A radio with expo ...in this example of a twitchy F1 car, you'd set the expo to a negative number (-35% for Fat500). When you turn the wheel half way, the servo would turn a bit less than that. For explanations sake, lets say it's equal to that 35%. So the wheel was turned 50%, but the servo only turned 35%. That makes the car steer less, and thus looks and handles less twitchy. But to finish this example you need to continue turning the wheel all the way to full lock at 100%. Since the servo only moved through 35% of it's travel so far, it has to play catch up and move the other 65% in order to meet the wheel at 100% at the same moment in time. The tires still turn the same amount at full lock, but with negative expo, there's no longer a 1:1 corelation between how far your turn the wheel and how far the tires actually turn (until you reach full lock).
Anybody still awake?
10-22-2009, 02:11 PM
#1401
Hey fat,
Here's what's goin on with me controller wise, it's a Traxxxas 27mhz am digital Top Qualifier, so it's hardly fancy. The other issue is I'm still learning the termonology (newb). Don't take this wrong, but I wish I knew what you guys were talkin about. I want to learn this $#!^. This is why I come here, to seek R/C knowledge from people who know what the're talkin about. I'm sure I'm about to get schooled right abouuuuut now!
Here's what's goin on with me controller wise, it's a Traxxxas 27mhz am digital Top Qualifier, so it's hardly fancy. The other issue is I'm still learning the termonology (newb). Don't take this wrong, but I wish I knew what you guys were talkin about. I want to learn this $#!^. This is why I come here, to seek R/C knowledge from people who know what the're talkin about. I'm sure I'm about to get schooled right abouuuuut now!
There aren't many dumb questions, but there are a few
10-22-2009, 02:13 PM
#1402
It's all god bro. The "exponential" adjustment for the steering servo, in this example, allows you to adjust how far the servo turns in relation to how far you turned the wheel, but the key here is that the servo will turn in a non-linear fashion.
Here's two examples to give you some perspective.
A radio without "expo"...when you turn the wheel 1/2 way, the servo also turns 1/2 way. When you continue turning the wheel to full lock, the servo also continues turning to full lock.
A radio with expo ...in this example of a twitchy F1 car, you'd set the expo to a negative number (-35% for Fat500). When you turn the wheel half way, the servo would turn a bit less than that. For explanations sake, lets say it's equal to that 35%. So the wheel was turned 50%, but the servo only turned 35%. That makes the car steer less, and thus looks and handles less twitchy. But to finish this example you need to continue turning the wheel all the way to full lock at 100%. Since the servo only moved through 35% of it's travel so far, it has to play catch up and move the other 65% in order to meet the wheel at 100% at the same moment in time. The tires still turn the same amount at full lock, but with negative expo, there's no longer a 1:1 corelation between how far your turn the wheel and how far the tires actually turn (until you reach full lock).
Anybody still awake?
The "exponential" adjustment for the steering servo, in this example, allows you to adjust how far the servo turns in relation to how far you turned the wheel, but the key here is that the servo will turn in a non-linear fashion.Here's two examples to give you some perspective.
A radio without "expo"...when you turn the wheel 1/2 way, the servo also turns 1/2 way. When you continue turning the wheel to full lock, the servo also continues turning to full lock.
A radio with expo ...in this example of a twitchy F1 car, you'd set the expo to a negative number (-35% for Fat500). When you turn the wheel half way, the servo would turn a bit less than that. For explanations sake, lets say it's equal to that 35%. So the wheel was turned 50%, but the servo only turned 35%. That makes the car steer less, and thus looks and handles less twitchy. But to finish this example you need to continue turning the wheel all the way to full lock at 100%. Since the servo only moved through 35% of it's travel so far, it has to play catch up and move the other 65% in order to meet the wheel at 100% at the same moment in time. The tires still turn the same amount at full lock, but with negative expo, there's no longer a 1:1 corelation between how far your turn the wheel and how far the tires actually turn (until you reach full lock).
Anybody still awake?
What you are essentially saying is you are lessening the reaction of the servo versus the input at the wheel
Makes sense to me
10-22-2009, 03:24 PM
#1404
Believe it or not, there are instances where positive exponential is useful.
10-22-2009, 04:32 PM
#1405
I have a dx3s and I run 35% expo in the steering. This is the single best adjustment you can make for the car. It was the difference btwn my 103 and 104. 104 is faster now that is dialed. If their is any question as to which car is better..have you seen DJ run his f104?
Expo will smooth out the car so you can push it harder.
Expo will smooth out the car so you can push it harder.
10-22-2009, 05:13 PM
#1406
WOW, all those responses are awsome. School's in and I'm takin notes.
10-22-2009, 05:13 PM
#1407
im running a KO Helios, and I am trying to figure out which function is like expo.
What you are essentially saying is you are lessening the reaction of the servo versus the input at the wheel
Makes sense to me
What you are essentially saying is you are lessening the reaction of the servo versus the input at the wheel
Makes sense to me
http://en.wikipedia.org/wiki/Exponential_growth
That is what servo expo does. Upon initial response, the servo moves less per user input, but to make up for that, it moves more per user input as you get closer to full lock to get to 100%. Setting negative expo really just smooths out (more precisely - deadens) the initial servo response.
You can also use this sort of curve function for throttle response. I set it in my Speed Control (Tekin) but most radios also have this avaialble. It seems to work better for me on the speed control when it comes to throttle expo. Looks like the Helios has a throttle curve setting too.
Believe it or not, BMW has something similar (as an option) for their 1:1 cars. They call it "active steering". Depending on vehicle speed, it takes fewer turns of the steering wheel (or more) to reach full lock.
Last edited by Arthur Burns; 10-22-2009 at 05:24 PM.
10-22-2009, 08:42 PM
#1409
I see that Orion Rocket packs / stick type batteries fit.
Can someone recommend any other lipo packs that fit and are cheaper. Will a non - hard case pack fit? www.Hobbycity.com has some 7.4v 4000mah packs fairly cheap.
Can someone recommend any other lipo packs that fit and are cheaper. Will a non - hard case pack fit? www.Hobbycity.com has some 7.4v 4000mah packs fairly cheap.
10-23-2009, 10:31 AM
#1410
- When I change to a red shock spring, what gear ratio should I use?
- If I run with a lighter weight shock oil, do I have to add lead weight to make up the difference?
- When I turn my steering wheel to the left, my car goes forward. When I turn it to the right, it does nothing. I'm trying go 170mph so any help would be appreciated.
- I painted a body from the inside and put stickers on it but the finish is still dull. How do you get yours to be so shiny?
- If I use velcro to hold my battery in, what gear ratio should I use?
Thanks in advance.