Re: when to put screws in the rims for slicks
[Re: bigdad]
#915401
01/29/11 01:16 AM
01/29/11 01:16 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
I would like to hear an engineer tell us just how many lbs of air pressure holds a tire to the bead
I am not but I'm sure it will amaze you
Sorry but I have seen tires come off the rims when the car was sideways ... your not going to see that occur on mine ... as to what pressure it takes... it s a matter of which has the greater pressure... is it the air pressure inside it or the side loading of the tire going sideways.
You better start screwing those front tires too
then
LAST COMMENT FOR ME ON THIS TOPIC
STAY SAFE FELLAS
Yeah I figured you'd quit now... since the fronts run about 45# pressure VS my 6.5 to no more than 7# with 14" across and thats not even figuring the total surface area thats on the ground so you better figure out which has the greater load .... but your right this IS my last word on this tread
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Re: when to put screws in the rims for slicks
[Re: MR_P_BODY]
#915402
01/29/11 08:36 AM
01/29/11 08:36 AM
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Joined: Jan 2003
Posts: 2,923 A shed in England
Tig
master
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master
Joined: Jan 2003
Posts: 2,923
A shed in England
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FWIW I first ran screws on the car when it was running 12's, 29 x 10 Slick on 8 1/2 inch convo pro. @ 10 psi the tyre moved 4 inches on the rim I've done it ever since. I run tubes now for the extra sidewall strength, it does improve the 60ft's, at least on my car. If I'd been running tubes back then I have no doubt I would have torn the valve out of the tube. IMHO for the little time and money it costs it's worth doing for the extra insurance, I've also yet to see a car run slower after screwing the tyre to the rim.
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials. 9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge. RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: when to put screws in the rims for slicks
[Re: sjs64polara]
#915405
01/29/11 07:31 PM
01/29/11 07:31 PM
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Joined: Dec 2005
Posts: 11,570 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,570
Fulton County, PA
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Big tire+quick 60'+low pressure=screws.
I've always ran screws. Didn't bother to mark the wheels or any of that. If it might be beneficial and it can't hurt and it doesn't cost anything, I just do it, but that's me.
I know my 60' improved a bit and became more consistent when I went to 16 screws per side.
If the results don't match the theory, change the theory.
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Re: when to put screws in the rims for slicks
[Re: rebel]
#915406
01/31/11 01:02 AM
01/31/11 01:02 AM
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Joined: Nov 2007
Posts: 1,600 Alberta Canada
StrokerAspen
top fuel
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top fuel
Joined: Nov 2007
Posts: 1,600
Alberta Canada
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Quote:
Quote:
You can see that the wrinkle is pulling from where the screw is on the wheel.
5 screws around the diameter of the wheel will make for large paddles, but fewer paddles (4 paddles)
this doesn't compare with my pic showing NO screws at all. somethings not right with this theory.
Not sure what your trying to get at here... No your situation won't compare with this set up BECAUSE your not running any screws. Screws serve the purpose of holding the tire where it is, but they also serve the purpose of controlling the "paddle" of the tire.
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Re: when to put screws in the rims for slicks
[Re: StrokerAspen]
#915407
01/31/11 01:27 AM
01/31/11 01:27 AM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
master
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master
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
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Used to run screws with slicks, now I just glue the drag radials because they use alot more air presure.
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: when to put screws in the rims for slicks
[Re: 1967dartgt]
#915408
01/31/11 01:37 AM
01/31/11 01:37 AM
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Joined: Jan 2004
Posts: 13,247 Mt. Vernon, Ohio
dartman366
I Live Here
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I Live Here
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
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Years ago I ran slick's and did not screw the rim's, twice I ripped the stem out, finally drilled and screwed the rim's and have not ripped a tube since, so now you know my opinion.
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
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