R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 07-13-2009, 09:29 PM   #1
Tech Adept
 
cjmonkey's Avatar
 
Join Date: Feb 2009
Posts: 168
Trader Rating: 11 (100%+)
Default Setup Station vs Camber Square

Ive noticed a big discrepancy between my Hudy 1/10 setup station and my camber square.

If i setup my camber according to my hudy station, and then measure it with the camber square, i usually se a difference of about 1-2mm!

My question is... which should i believe? Could it be that my Hudy is reading the camber correctly, but the tolerances in my wheels/tires are causing an inaccurate reading on the guage?

How do you guys set your camber?
__________________
TAMIYA - LRP - Speedpassion - Sorex - Futaba - Protoform - Intellect - Muchmore

DEM Racing Team

W.E.R.C
cjmonkey is offline   Reply With Quote
Old 07-13-2009, 09:53 PM   #2
Tech Elite
 
pakk's Avatar
 
Join Date: Mar 2009
Posts: 3,077
Trader Rating: 79 (100%+)
Default

I don't use those square because most of my wheels are bent from hitting stuff. So I just use the setup station.

But ideally, if your wheels are strait, they should read the same. Have you checked your wheels?


--pakk
__________________
*Photon* *SC10 4x4*
RCRD
pakk is offline   Reply With Quote
Old 07-13-2009, 09:56 PM   #3
Tech Elite
 
JimmyMac's Avatar
 
Join Date: Oct 2001
Location: NC
Posts: 4,443
Trader Rating: 2 (100%+)
Default

When you use the "square" you should also use setup wheels. If you do not, then a bent wheel will cause inaccurate reading/settings. My setup wheel/guage have been dead on with my setup station.
__________________
M.J. McIntyre

Yokomo YRX12
Tamiya TB03
JimmyMac is offline   Reply With Quote
Old 07-13-2009, 09:59 PM   #4
Tech Elite
 
pakk's Avatar
 
Join Date: Mar 2009
Posts: 3,077
Trader Rating: 79 (100%+)
Default

Quote:
Originally Posted by JimmyMac View Post
When you use the "square" you should also use setup wheels. If you do not, then a bent wheel will cause inaccurate reading/settings. My setup wheel/guage have been dead on with my setup station.
doesn't that defeat the purpose of a square? I always thought of the square to be a good quick way to check your settings. If you are taking your wheels off and putting a set of set up wheels on, aren't you better off just using the setup station?

--pakk
__________________
*Photon* *SC10 4x4*
RCRD
pakk is offline   Reply With Quote
Old 07-13-2009, 10:07 PM   #5
Tech Adept
 
cjmonkey's Avatar
 
Join Date: Feb 2009
Posts: 168
Trader Rating: 11 (100%+)
Default

i noticed this with brand new wheels... :-(
__________________
TAMIYA - LRP - Speedpassion - Sorex - Futaba - Protoform - Intellect - Muchmore

DEM Racing Team

W.E.R.C
cjmonkey is offline   Reply With Quote
Old 07-13-2009, 10:26 PM   #6
Tech Elite
 
JimmyMac's Avatar
 
Join Date: Oct 2001
Location: NC
Posts: 4,443
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by pakk View Post
doesn't that defeat the purpose of a square? I always thought of the square to be a good quick way to check your settings. If you are taking your wheels off and putting a set of set up wheels on, aren't you better off just using the setup station?

--pakk
Yes and no. It's much easier to pack up 4 setup wheels and a camber gauge compared to a whole setup station. In other words, my 4 setups wheels and camber gauge only take up the space of one rubber tire in my pit box. Where as my setup station is in a case by itself. Blah blah blah. hehe. But you can just use a setup gauge/square on normal wheels/tires. But you must rotate the tire 1/4 turn and measure it. 1/4 turn and measure it. 1/4 turn and measure it. If your readings are inaccurate, your wheels are warped. This is why it's best to use setup wheels. Also, with setup wheels, they are usually 1mm taller than tires. So you can set ride height up evenly at all 4 corners as long as you know the difference between your setup wheels and actual wheels. There are even setup wheels for carpet racing. They are setup to mimic foam tires cut at different heights, like 56mm or 58mm or 57mm, etc, etc. So you can setup droop/lift or ride height accurately. Etc, etc.

Anyways, at the track, I use setup wheels and camber gauge. At home, I use setup station.
__________________
M.J. McIntyre

Yokomo YRX12
Tamiya TB03
JimmyMac is offline   Reply With Quote
Old 07-13-2009, 10:33 PM   #7
Tech Elite
 
pakk's Avatar
 
Join Date: Mar 2009
Posts: 3,077
Trader Rating: 79 (100%+)
Default

What are these "set up wheels" you are talking about. When you said it the first time, I thought you mean you had a set of reg wheels that you knew were strait. Now it sounds like something else.


....and your logic makes sense. Space is huge. I have been trying to minimize what I take with me. I found the best way is to pit next to someone who brings everything and become their friend.

--pakk
__________________
*Photon* *SC10 4x4*
RCRD
pakk is offline   Reply With Quote
Old 07-13-2009, 10:50 PM   #8
Tech Elite
 
JimmyMac's Avatar
 
Join Date: Oct 2001
Location: NC
Posts: 4,443
Trader Rating: 2 (100%+)
Default

I use this...
http://www.speedtechrc.com/store/ebp...id=613&id=5782

Along with this...
http://shopping.rcmodel.hk/product_i...oducts_id=6538

or this...
http://shopping.rcmodel.hk/product_i...ducts_id=10400

There are many different makes of setup wheels.
__________________
M.J. McIntyre

Yokomo YRX12
Tamiya TB03
JimmyMac is offline   Reply With Quote
Old 07-13-2009, 10:51 PM   #9
Tech Master
 
cyanyde's Avatar
 
Join Date: Mar 2006
Location: KL, MY.
Posts: 1,041
Default

http://cgi.ebay.com/3Racing-ST-001-P...A1%7C294%3A200
__________________
/Adrian.

RC FB Pages Subscribed:
facebook.com/EPBuggy
facebook.com/AllStarChampionship
cyanyde is offline   Reply With Quote
Old 07-13-2009, 11:03 PM   #10
Tech Elite
 
FK05 lover's Avatar
R/C Tech Elite Subscriber
 
Join Date: Dec 2007
Location: somewhere in 1973
Posts: 2,994
Trader Rating: 147 (99%+)
Default

you should only use the camber square on set up rims or disc's on on tyre/rim as you will get a different reading
__________________
CastleHill Raceway...
FK05 lover is offline   Reply With Quote
Old 07-14-2009, 12:31 AM   #11
Tech Adept
 
cjmonkey's Avatar
 
Join Date: Feb 2009
Posts: 168
Trader Rating: 11 (100%+)
Default

thanks for the info guys..
__________________
TAMIYA - LRP - Speedpassion - Sorex - Futaba - Protoform - Intellect - Muchmore

DEM Racing Team

W.E.R.C
cjmonkey is offline   Reply With Quote
Old 07-14-2009, 04:18 AM   #12
Tech Master
 
Martin Hofer's Avatar
 
Join Date: Mar 2005
Location: Germany
Posts: 1,083
Send a message via ICQ to Martin Hofer
Default

a setup system / setup wheels never show the same camber value, your actual race tires do, even if they are new and flat

it's just caused by the load

a setup system / setup wheels tend to "slide out" compared to a real wheel which in the end results in 2 set on a setup system beeing REAL 1 - 1.5 of camber depending on the slop in your car

so if youw ant to have 1.5 of real camber (which is somewhat a desired value usually) you have to set around 2 on a setup system depending on your system/car

this should also make you think about wether or not a setup system is usefull ...

most of the time a cheap camber gauge is best as you can measure the real camber on the wheels you use in the race, rotate the wheel by 1/3 of a turn and measure again, rotate again, measure again
this way you make sure you even take a bent wheel into consideration
__________________
Schumacher Racing
Team GM-Racing
Team Sorex
Xenon Racing
Tonisport
Martin Hofer is offline   Reply With Quote
Old 07-14-2009, 09:13 AM   #13
Tech Fanatic
 
94eg!'s Avatar
 
Join Date: Jan 2008
Posts: 832
Trader Rating: 17 (100%+)
Default

^Yes that makes very good sense. A setup wheel will load the wheel bearings very different from a real tire/wheel. It sounds like the setup wheel mimics the load seen by the inside tire during a turn (the bottom is being pulled outwards). If -1.5* camber is set like this, the play in wheel bearing/hubs can/will reduce camber to near zero on the outside wheel when racing.

I have also noticed it makes a similar difference when simply setting the car down onto the setup board. The stickier the tires, more they grab & pull as you set the car down...

So here's the real question: If you were to place the car for measuring so as to take up all the slack, which would be the better direction.......Bottom of wheels pulled in towards eachother, or bottom of wheels being pulled outwards?
94eg! is offline   Reply With Quote
Old 07-14-2009, 09:27 AM   #14
Tech Master
 
Martin Hofer's Avatar
 
Join Date: Mar 2005
Location: Germany
Posts: 1,083
Send a message via ICQ to Martin Hofer
Default

the real deal ... in racing condiitions the tires will never slide out!
__________________
Schumacher Racing
Team GM-Racing
Team Sorex
Xenon Racing
Tonisport
Martin Hofer is offline   Reply With Quote
Old 07-14-2009, 09:47 AM   #15
Tech Master
 
sportpak's Avatar
 
Join Date: Oct 2006
Location: Ft Wayne, IN
Posts: 1,314
Trader Rating: 26 (100%+)
Default

The most important thing is to do it the same every time. if you worry about setup wheels varying from actual, if you do the same thing each time, your numbers will end up whatever they end and your car will be setup.
__________________
-Tamiya TA05-R - Tamiya M05 - Summit Raceway Ft. Wayne, IN

www.summitrcraceway.com
sportpak is offline   Reply With Quote
Reply



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 03:50 AM.


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