3" drop spindles in relation to the scrub line - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CSoliz · 12-29-2011, 12:44 AM

I have a 66 C10 with a 84 3/4 ton LCA. I want to run a 3" drop spindle, will this combo put the LCA below the scrub line with 15" rims? If so, what size rim would be needed so it isn't as an issue?

Thanks for any help.

Hertzdaddy · 12-29-2011, 11:16 AM

Not sure but some local/state ordinances describe scrub line as an imaginary line from the bottom of the rim on one side to the bottom of the inflated tire on the other (measured with the truck on flat ground). The reasoning being that in most cases only one tire will blow. If you are comfortable with this description then I think that 3" drop spindles would not put the lca below the scrub line with a 15" tire, although tire profile will have an effect on this too.

I suppose if you have the truck on its wheels/tires right now then you could pull a string as described above and see if it clears the lca by more than 3".

gringoloco · 12-29-2011, 11:42 AM

It will be close, but should clear, depending on how much drop spring you use. The ballpoint area will be inside the edge of the rim, but barely- you may have issues with clearance there, depending on back spacing of the wheel...
Posted via Mobile Device

CSoliz · 12-29-2011, 09:20 PM

Quote:

Originally Posted by Hertzdaddy

Not sure but some local/state ordinances describe scrub line as an imaginary line from the bottom of the rim on one side to the bottom of the inflated tire on the other (measured with the truck on flat ground). The reasoning being that in most cases only one tire will blow. If you are comfortable with this description then I think that 3" drop spindles would not put the lca below the scrub line with a 15" tire, although tire profile will have an effect on this too.

I suppose if you have the truck on its wheels/tires right now then you could pull a string as described above and see if it clears the lca by more than 3".

I wish it was sitting on wheels, it is just a frame right now. Still working on it.

I plan on having 3" springs as well, if I go with 16" rims that should clear up any "maybes", right?

*WAAF* · 12-29-2011, 09:30 PM

look at whats aval in 16" they are getting less and less size choices

**N2TRUX** · 12-30-2011, 12:14 AM

Quote:

Originally Posted by WAAF

look at whats aval in 16" they are getting less and less size choices

He is correct. Before you decide on a rim size make sure the tire size you want is available and/or affordable. I have found that 17's and 20's have the best size and price ratio.

12-29-2011, 12:44 AM	#1
CSoliz Torn between 66 and 78 Join Date: May 2008 Location: So. Cal. Posts: 253	3" drop spindles in relation to the scrub line I have a 66 C10 with a 84 3/4 ton LCA. I want to run a 3" drop spindle, will this combo put the LCA below the scrub line with 15" rims? If so, what size rim would be needed so it isn't as an issue? Thanks for any help.

12-29-2011, 11:16 AM	#2
Hertzdaddy Registered User Join Date: Oct 2008 Location: Montpelier, VA Posts: 315	Re: 3" drop spindles in relation to the scrub line Not sure but some local/state ordinances describe scrub line as an imaginary line from the bottom of the rim on one side to the bottom of the inflated tire on the other (measured with the truck on flat ground). The reasoning being that in most cases only one tire will blow. If you are comfortable with this description then I think that 3" drop spindles would not put the lca below the scrub line with a 15" tire, although tire profile will have an effect on this too. I suppose if you have the truck on its wheels/tires right now then you could pull a string as described above and see if it clears the lca by more than 3".

12-29-2011, 11:42 AM	#3
gringoloco A guy with a truck Join Date: Sep 2005 Location: Germany, for now Posts: 5,921	Re: 3" drop spindles in relation to the scrub line It will be close, but should clear, depending on how much drop spring you use. The ballpoint area will be inside the edge of the rim, but barely- you may have issues with clearance there, depending on back spacing of the wheel... Posted via Mobile Device __________________ -Chris Instagram _elgringoloco_ '70 Short-Wide How to: Ruin a perfectly good C10 ‘70 Blazer ConversionHow To: Ruin a Perfectly Good 4wd '72 Highlander How To: Ruin a Perfectly Good K/5 (SOLD) '72 Blazer 2WD How to: Ruin a perfectly good Blazer (SOLD) '05 Yukon Daily Driven (not so stock) Yukon (SOLD) ‘07 Yukon Denali (daily) Members met list: SCOTI, darkhorse970, 67cheby, 67cheby'sGirl, klmore, porterbuilt, n2billet, Fastrucken, classicchev, Col Clank, GSFMECH, HuggerCST, Spray-Bomb, BACKYARD88, 5150, fine69, fatbass, smbrouss70, 65StreetCruiser, GAc10boy

12-29-2011, 09:30 PM	#5
WAAF Account Suspended Join Date: Dec 2011 Location: ma Posts: 278	Re: 3" drop spindles in relation to the scrub line look at whats aval in 16" they are getting less and less size choices

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