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drak 
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Joined: 03 Apr 2013
Location: uk
Points: 142
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 Posted: 23 Dec 2016 at 12:09pm |
Hi Whats the size of the tyres ? I need to purchase a new pair, I have at present 24x14 on spokes but they are a little big, what would be the recomended size ?
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Gary
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Joined: 13 Sep 2009
Location: Peterborough,On
Points: 5323
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Posted: 23 Dec 2016 at 12:35pm |
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Original tyre - XI.XXV x XXIV
Gary
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ecclap
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Joined: 24 Jan 2016
Location: Iowa
Points: 52
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Posted: 23 Dec 2016 at 1:49pm |
 drak wrote:
HiWhats the size of the tyres ? I need to purchase a new pair, I have at present 24x14 on spokes but they are a little big, what would be the recomended size ? |
The original size for the WC was 11.25 X 24". These tires were called balloon tires and are different than anything that is available today. Around 1939, wide base tires came out and the sidewalls were designed to be more straight than the old balloon tires. The 11.25 was replaced by the 13 X 24". Keep in mind that the tires themselves were completely redesigned so the 13 X 24 was just the replacement and not the same tire. Later on the numbering system was changed and the 13 X 24" became the 14.9 X 24". They were the same tire, just measured differently. And that is the current numbering system we use today. So a direct replacement would be the 14.9 X 24. Some people feel that this size looks a little too big so they go a size down and use 13.6 X 24" instead.
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KenBWisc
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Joined: 15 Sep 2009
Location: Fall Creek, WI
Points: 1171
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Posted: 23 Dec 2016 at 2:01pm |
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Excellent information! I have a questions for the Wilkies. Have you replaced the two guide lugs with lug bolts or where the early hubs and rims six bolt? My WC #629 has a four bolt hub with the guides. The rim is cast to accept wheel weights.
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'34 WC #629, '49 G, '49 B, '49 WD, '62 D-19, '38 All Crop 60 and still hunting!
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ecclap
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Joined: 24 Jan 2016
Location: Iowa
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Posted: 23 Dec 2016 at 2:50pm |
KenBWisc wrote:
Excellent information! I have a questions for the Wilkies. Have you replaced the two guide lugs with lug bolts or where the early hubs and rims six bolt? My WC #629 has a four bolt hub with the guides. The rim is cast to accept wheel weights.
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I'm wondering the same thing. The parts catalog says 4 guide pins per tractor prior to #2646 and 2 used prior to #67328. I'm not sure about the very early tractors though. Do you know if your #629 is wearing it's original wheel equipment? I wonder when they changed to the HC46A hubs with the ledge?
Edited by ecclap - 23 Dec 2016 at 2:51pm
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Gerald J.
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Joined: 12 Sep 2009
Location: Hamilton Co, IA
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Posted: 23 Dec 2016 at 4:32pm |
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Long about 1950 the rubber tire manufactures association changed the way tire sizes were designated. Before that the tire sizes was the rim diameter and rim width, e.g. the inside diameter of the bead surface and the distance between the two bead surfaces. The change was to change the tire width number to the maximum width of the tire nearly always greater than the rim width.
Miller Tire and other vendors of historic tractor tires have had a conversion chart on line for old numbers that you will find in the operator's manual to the modern designation for the same size tire.
Most ag tire makers, I know Titan/Goodyear have an Ag Tire Handbook on line. Towards the back there is a chart of approved and preferred rims listed by tire size. Up front there are tables of dimensions of bias ply and radial rear tires.
It is often possible to get a tire to stay on a rim outside the approved rim sizes, but if the rim is narrow the outside of the tire tends to be more rounded with more rapid wear in the center and less soil contact for less traction unless run at very low air pressure. A narrow tire on a wide rim tends to wear the outer edges more.
A taller tire tilts the tractor, sometimes that can be helped with a taller front tire and is a benefit when spraying or cultivating crops.
Titan/Goodyear is pushing low side wall tires these days requiring larger rims for the same outside diameter and axle height. Lots of truck and SUV tires have gone that route because the taller ones in vogue a few years ago with low pressure for a comfortable ride lacked lateral stability and caused wrecks.
Gerald J.
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KenBWisc
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Joined: 15 Sep 2009
Location: Fall Creek, WI
Points: 1171
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Posted: 27 Dec 2016 at 10:05am |
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I wouldn't want to guarantee my rear wheels are original. My Dad did relate to me how they had the local blacksmith cut off the steel and weld on tire rims. One of my rims has been replaced at least twice and one at least once. What makes me suspicious that at least one of the wheels is not original is that the orientation of the spokes do not match.
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'34 WC #629, '49 G, '49 B, '49 WD, '62 D-19, '38 All Crop 60 and still hunting!
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