R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 01-10-2010, 08:26 PM   #1
Tech Fanatic
 
Join Date: Jun 2009
Location: Northern California
Posts: 906
Trader Rating: 20 (100%+)
Default CHASSIS FLEX??

I just want to know if I should want more or less "flex" on my chassis. I drive a TC5 rubber tires on carpet medium bite track. I am not sure what chassis flex really does or if I want it or not want it. Thanks in advance.
storytyme is offline   Reply With Quote
Old 01-10-2010, 08:53 PM   #2
Tech Regular
 
decibels's Avatar
 
Join Date: Apr 2008
Location: in a house
Posts: 431
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by storytyme View Post
I just want to know if I should want more or less "flex" on my chassis. I drive a TC5 rubber tires on carpet medium bite track. I am not sure what chassis flex really does or if I want it or not want it. Thanks in advance.
Hey chassis flex usually gives your car more grip and depending on where the flex is depends on where the grip will be!! if its flexi up front then it will want to steer harder and if its flexier at the back then it will have more rear grip and be hooked up or slightly understeer!! but as a general rule if you can run your car stiffer and it is working then you will have more corner speed and high speed steering and your car should be more stable to!!
__________________
Team Wave Speedies
Thunder power lipo's
flying fox rc
!!And an idiot with a controller!!
decibels is offline   Reply With Quote
Old 01-10-2010, 09:07 PM   #3
Tech Elite
 
rallyebmx's Avatar
 
Join Date: May 2007
Posts: 2,864
Trader Rating: 21 (100%+)
Default

decibels-thanks for that easy explanation!
__________________
cpaurl
rallyebmx is offline   Reply With Quote
Old 01-10-2010, 09:30 PM   #4
Tech Fanatic
 
Join Date: Jun 2009
Location: Northern California
Posts: 906
Trader Rating: 20 (100%+)
Default

Quote:
Originally Posted by decibels View Post
Hey chassis flex usually gives your car more grip and depending on where the flex is depends on where the grip will be!! if its flexi up front then it will want to steer harder and if its flexier at the back then it will have more rear grip and be hooked up or slightly understeer!! but as a general rule if you can run your car stiffer and it is working then you will have more corner speed and high speed steering and your car should be more stable to!!
I am new to driving the onroad car, so since I am looking for consistency with speed mixed in then I need the flex? I do tend to fish tail a little. Will the flex cut down on speed a lot or will a rookie like me not even notice?
storytyme is offline   Reply With Quote
Old 01-10-2010, 11:47 PM   #5
Tech Regular
 
decibels's Avatar
 
Join Date: Apr 2008
Location: in a house
Posts: 431
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by storytyme View Post
I am new to driving the onroad car, so since I am looking for consistency with speed mixed in then I need the flex? I do tend to fish tail a little. Will the flex cut down on speed a lot or will a rookie like me not even notice?
It depends it might make you faster if you are having less accidents!!
__________________
Team Wave Speedies
Thunder power lipo's
flying fox rc
!!And an idiot with a controller!!
decibels is offline   Reply With Quote
Old 01-11-2010, 12:06 AM   #6
Tech Addict
 
Join Date: Nov 2008
Location: NZ
Posts: 677
Default

Quote:
Originally Posted by decibels View Post
but as a general rule if you can run your car stiffer and it is working then you will have more corner speed
How does this work? Wouldnt more corner speed come from more grip (obtained by more flex); or is it not that simple.
Also, for stock/silvercan racing, would less flex be the way to go to try & max the speed?? since initial cornering speed wont be that fast anyway..
1101 is offline   Reply With Quote
Old 01-11-2010, 04:31 AM   #7
Tech Regular
 
decibels's Avatar
 
Join Date: Apr 2008
Location: in a house
Posts: 431
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by 1101 View Post
How does this work? Wouldnt more corner speed come from more grip (obtained by more flex); or is it not that simple.
Also, for stock/silvercan racing, would less flex be the way to go to try & max the speed?? since initial cornering speed wont be that fast anyway..
like i said less flex is usually faster in corner speed and in the spec classes especially and sometimes you add some flex to get around a setup change!! but if it makes you slower then it is not faster so you have to try and see how you go but don't just look at fastest lap look at your overall lap. if a setup change is good then you should have only a few laps of mistakes at worst and the rest should be close together. or closer together than what you have previously been doin!!
__________________
Team Wave Speedies
Thunder power lipo's
flying fox rc
!!And an idiot with a controller!!
decibels is offline   Reply With Quote
Old 01-11-2010, 05:28 AM   #8
Tech Champion
 
Join Date: Feb 2003
Location: Sydney, Australia
Posts: 5,310
Trader Rating: 1 (100%+)
Default

Flex basically allows you chassis to hold onto the surface better with more bite and slower response making it easy to drive. The penalty is that with too much grip your car will be "locked" and will not rotate as well in corners when you are leaning on it hard. A car that turns well has a balance between front and rear grip. When you have flex it helps in particular with generating rear grip so you do tend to loose some steering. The best use for flex is dealing with poor track conditions. If you are struggling with getting your car to work flex will help you with better drivability, but the potential for outright pace will be reduced. This is why modern TC's are designed to flex a little, but not too much. If flex was the be all and end all of setup, then chassis like the cyclone s, T2r, and tao5 would smack the high end chassis that they are based on.
__________________
Blade: Andro Treiber H 79g AN
FH: Donic Bluefire M3 Max Blk
BH: Donic Bluefire M2 Max Red
Powered by Falco
Dragonfire is offline   Reply With Quote
Old 01-11-2010, 07:41 AM   #9
Tech Master
 
Dane's Avatar
 
Join Date: Feb 2005
Location: Texas Baby
Posts: 1,582
Trader Rating: 24 (100%+)
Send a message via AIM to Dane Send a message via Skype™ to Dane
Default

The above is true - more flex=more traction but I've also found that each surface needs a certain amount of flex (or lack thereof) to get the car to work properly. A car can be planted and have a decent amount of steering but if the chassis is not working properly, it can lose a good amount of cornering speed. Because flex affects the entire chassis and how it operates fundamentally, it's a powerful tool.

In other words, even if the car seems to be doing okay but the laptimes are not really showing it, try altering the flex in the car.
__________________
"the big secret is to keep practicing and never get discouraged when taking a good beating on the track" - Paul L

www.toycarracingblog.com

Last edited by Dane; 01-11-2010 at 07:53 AM.
Dane is offline   Reply With Quote
Old 01-11-2010, 10:25 AM   #10
Tech Fanatic
 
Join Date: Jun 2009
Location: Northern California
Posts: 906
Trader Rating: 20 (100%+)
Default

Quote:
Originally Posted by Dragonfire View Post
Flex basically allows you chassis to hold onto the surface better with more bite and slower response making it easy to drive. The penalty is that with too much grip your car will be "locked" and will not rotate as well in corners when you are leaning on it hard. A car that turns well has a balance between front and rear grip. When you have flex it helps in particular with generating rear grip so you do tend to loose some steering. The best use for flex is dealing with poor track conditions. If you are struggling with getting your car to work flex will help you with better drivability, but the potential for outright pace will be reduced. This is why modern TC's are designed to flex a little, but not too much. If flex was the be all and end all of setup, then chassis like the cyclone s, T2r, and tao5 would smack the high end chassis that they are based on.
So would flex in the back, but stiff up front be more resonable than vice versa? I will have to play with it as it sounds like it is a track specific thing. I assume most top drivers run fairly stiff chassis. Is this a true assumption?
storytyme is offline   Reply With Quote
Old 01-11-2010, 10:34 AM   #11
Tech Master
 
Dane's Avatar
 
Join Date: Feb 2005
Location: Texas Baby
Posts: 1,582
Trader Rating: 24 (100%+)
Send a message via AIM to Dane Send a message via Skype™ to Dane
Default

Quote:
Originally Posted by storytyme View Post
So would flex in the back, but stiff up front be more resonable than vice versa? I will have to play with it as it sounds like it is a track specific thing. I assume most top drivers run fairly stiff chassis. Is this a true assumption?
Depends on your setup and track. I would start by making the flex as equal as possible (front to rear) and going from there.

By the setups I have seen in touring, most keep their chassis relatively soft with rubber tires on carpet due to limited traction.
__________________
"the big secret is to keep practicing and never get discouraged when taking a good beating on the track" - Paul L

www.toycarracingblog.com
Dane is offline   Reply With Quote
Old 01-11-2010, 09:00 PM   #12
Tech Fanatic
 
Join Date: Nov 2006
Posts: 845
Default

My TC5r was easier to drive the the o-rings in the top plate ... easier = FASTER

____________________
www.RCActionPics.com

Rojna is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Chassis Flex Barlarito Nitro Off-Road 29 09-23-2009 05:22 AM
Chassis flex Baedarlboo Nitro On-Road 61 04-02-2008 04:41 PM
Chassis Flex? rjl Nitro On-Road 23 08-23-2004 08:28 AM
Chassis flex - or not to flex sands Electric On-Road 11 10-03-2003 01:36 PM
Chassis flex hoj Electric On-Road 20 02-07-2003 03:27 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 10:43 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net