Balancing Racing Slicks

ss3011 · 01-07-2015, 06:58 PM

Why do most rear slicks get bubble balanced ? Is there a problem spin balancing slicks ?

supergas4 · 01-07-2015, 07:32 PM

think about it.soft sidewall

Ed Wright · 01-07-2015, 08:54 PM

A friend spin balances mine. Quicker & cheaper to bubble balance at the track.

countrypuppy4865 · 01-07-2015, 10:42 PM

I spin balance never noticed any issues on track with vibration. Always did radials maybe bias tires have issues?

ss3011 · 01-08-2015, 12:35 AM

Anyone know how fast a spin balancer spins? I thought about 500 rpm, sounds about right. That would keep a normal street tire (26" diameter) under 60 mph. At 60 mph , even a bias ply drag slick would not grow much.

Ed Wright · 01-08-2015, 08:24 AM

You will still find an imbalance you won't find with a bubble balancer. Split your weicght too needs four ounces? Put two front side, two back side.

Paul Precht · 01-08-2015, 10:34 AM

Quote:

Originally Posted by Ed Wright

You will still find an imbalance you won't find with a bubble balancer. Split your weicght too needs four ounces? Put two front side, two back side.

That's the way I learned back in the early 70s. I use 4 weights, 2 on each side, bringing them closer or further apart as needed. I still use my old Coats 10/10 and bubble ballance for slicks and trailer tires.

fordteacherguy · 01-08-2015, 08:51 PM

There is a lot more than balance to fix shakes in tires. Technology has come a long way in tire balancing and rim/tire run out matching. Here is a video from Hunter engineering demonstrating their Road Force Balancer. Note ...this is old technology...we have been road forcing tires for over 10 years to fix non-balance tire shake. I road force all of my slicks and have to re-index most at least once due to their concentricity is not near what a OEM tire has and drag slicks undergo side wall damage from launching that can show up in a road force test but not be a balance issue.

Enjoy! Learn something new!

http://www.bing.com/videos/search?q=...9C2AC5FD52B319

Don Anderson · 01-08-2015, 11:09 PM

Thanks for sharing this video Brian !!

Don Anderson
M/S #5891

CMcAllister · 01-09-2015, 01:56 PM

Not all spin balancers are high speed. I have used a Snap-On branded machine with good results. Not sure who actually makes it. I've also used the old Snap-On machine that you spun up by hand with good results. I remember seeing that little machine sitting around in a lot of pro pits years ago.

01-07-2015, 06:58 PM	#1
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 885 Likes: 63 Liked 221 Times in 102 Posts	Balancing Racing Slicks Why do most rear slicks get bubble balanced ? Is there a problem spin balancing slicks ?

01-07-2015, 07:32 PM	#2
supergas4 Member Join Date: Jun 2010 Posts: 159 Likes: 0 Liked 6 Times in 5 Posts	Re: Balancing Racing Slicks think about it.soft sidewall

01-07-2015, 08:54 PM	#3
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 389 Times in 168 Posts	Re: Balancing Racing Slicks A friend spin balances mine. Quicker & cheaper to bubble balance at the track. __________________ Ed Wright 4156 SS/JA

01-07-2015, 10:42 PM	#4
countrypuppy4865 Senior Member Join Date: Nov 2003 Location: Donaldsonville, LA Posts: 966 Likes: 8 Liked 183 Times in 62 Posts	Re: Balancing Racing Slicks I spin balance never noticed any issues on track with vibration. Always did radials maybe bias tires have issues? __________________ Jimmy "Cooter" Hidalgo, Jr. 4865 E/SA '04 GTO 4865 SS/GA '99 Firebird

01-08-2015, 08:24 AM	#6
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 389 Times in 168 Posts	Re: Balancing Racing Slicks You will still find an imbalance you won't find with a bubble balancer. Split your weicght too needs four ounces? Put two front side, two back side. __________________ Ed Wright 4156 SS/JA

01-08-2015, 12:35 AM	#5
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 885 Likes: 63 Liked 221 Times in 102 Posts	Re: Balancing Racing Slicks Anyone know how fast a spin balancer spins? I thought about 500 rpm, sounds about right. That would keep a normal street tire (26" diameter) under 60 mph. At 60 mph , even a bias ply drag slick would not grow much.

01-08-2015, 08:51 PM	#8
fordteacherguy Member Join Date: Jun 2007 Location: Federal Way, WA Posts: 233 Likes: 24 Liked 147 Times in 47 Posts	Re: Balancing Racing Slicks There is a lot more than balance to fix shakes in tires. Technology has come a long way in tire balancing and rim/tire run out matching. Here is a video from Hunter engineering demonstrating their Road Force Balancer. Note ...this is old technology...we have been road forcing tires for over 10 years to fix non-balance tire shake. I road force all of my slicks and have to re-index most at least once due to their concentricity is not near what a OEM tire has and drag slicks undergo side wall damage from launching that can show up in a road force test but not be a balance issue. Enjoy! Learn something new! http://www.bing.com/videos/search?q=...9C2AC5FD52B319 __________________ Brian Thompson NHRA Stock / Super Stock Class P/SA 6665 SS/MA 6665

01-08-2015, 11:09 PM	#9
Don Anderson Member Join Date: Dec 2010 Location: Duluth, Mn. Posts: 151 Likes: 2,462 Liked 22 Times in 7 Posts	Re: Balancing Racing Slicks Thanks for sharing this video Brian !! Don Anderson M/S #5891

01-09-2015, 01:56 PM	#10
CMcAllister Senior Member Join Date: Sep 2006 Location: Fulton County, PA Posts: 533 Likes: 9 Liked 745 Times in 206 Posts	Re: Balancing Racing Slicks Not all spin balancers are high speed. I have used a Snap-On branded machine with good results. Not sure who actually makes it. I've also used the old Snap-On machine that you spun up by hand with good results. I remember seeing that little machine sitting around in a lot of pro pits years ago.