spline count
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From: utica il
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Unfortunately its not simple as that. Spline count and technology is just as important as if its a 1040, 1050, 1541, 4130 shaft and the major/minor diameters.
If you take two shafts, with identical specs. One is a 1.30" 30spline, one is a 1.31 31spline. Same material, same pressure angles. The 31spline shaft is nearly 11% stronger.
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From: St. Louis
I'm quoting the book International Harvester Tractors 1955-1985 "The speed transmission update was done to counter problems incurred during high cycles of maximum loading on the shifting clutches. IH engineers found that the fine splines on the transmission shafts and gears could 'round off' during heavy use, causing the tractor to be immovable . The solution was to use coarse-splined shafts and gears that would not round over. An update package was devoloped for retail units that had experienced this failure." This is really where my original question came from. To me, it sounds like they went from lots of smaller splines (i.e. more splines) to coarser splines (i.e. less splines). If nobody questions anything and just shakes there head yes, then were all just a bunch of dupes to the corporate man, buying stuff we dont need just cuz they say to.
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From: Victoria , BC
This thread is retarded. Nobody shears splines off. Axles get strength from diameter and material type. That pirate tech bible talks about better spline design and engagement for a more even pressure area but you don't see splines shearing off. I've seen them twist but thats also usually with just an axle break..
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Post Fiend
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By your logic a 40 spline shaft that is, lets say, 1" diameter is just as strong or stronger than a 20 spline shaft that is 2"? is that what you are trying to tell us?
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Its true, Karl is an expert when it comes to shaft.
Since 1badb2 has apparently abandoned his highly education position, I will now further make my point.
If spline count is more important than material used or diameter then why, oh why, would manufacturers increase shaft diameter when they increase spline count?
For a 9"
31sp = 1.31"
35sp = 1.5"
40sp = 1.71"
If simply adding splines made the shaft stronger then why increase the diameter? Shouldn't guys like Mark Williams, Sandy Cone or Bobby Long just cram more splines onto a stock 9" blank? The answer is NO. When the diameter is increased the result is more splines of the same pitch/size/etc. If someone made a 2" shaft for a 9" it might be 48-50sp but only because that's what the diameter dictates when you keep the spline size the same.
Since 1badb2 has apparently abandoned his highly education position, I will now further make my point.
If spline count is more important than material used or diameter then why, oh why, would manufacturers increase shaft diameter when they increase spline count?
For a 9"
31sp = 1.31"
35sp = 1.5"
40sp = 1.71"
If simply adding splines made the shaft stronger then why increase the diameter? Shouldn't guys like Mark Williams, Sandy Cone or Bobby Long just cram more splines onto a stock 9" blank? The answer is NO. When the diameter is increased the result is more splines of the same pitch/size/etc. If someone made a 2" shaft for a 9" it might be 48-50sp but only because that's what the diameter dictates when you keep the spline size the same.
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Since 1badb2 has apparently abandoned his highly education position, I will now further make my point.
If spline count is more important than material used or diameter then why, oh why, would manufacturers increase shaft diameter when they increase spline count?
its clear that reading comprehension is not your strong point. I never said it was more important, I said it is equally important, which it is.
For a 9"
31sp = 1.31"
35sp = 1.5"
40sp = 1.71"
If simply adding splines made the shaft stronger then why increase the diameter?
If spline count is more important than material used or diameter then why, oh why, would manufacturers increase shaft diameter when they increase spline count?
its clear that reading comprehension is not your strong point. I never said it was more important, I said it is equally important, which it is.
For a 9"
31sp = 1.31"
35sp = 1.5"
40sp = 1.71"
If simply adding splines made the shaft stronger then why increase the diameter?
This thread is retarded. Nobody shears splines off.Axles get strength from diameter and material type. That pirate tech bible talks about better spline design and engagement for a more even pressure area but you don't see splines shearing off. I've seen them twist but thats also usually with just an axle break..
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From: North Dakota
I've only twisted the spines on one shaft. And it was in the splines just like it sounds like urs was broke.
But, I've broke more shafts closer to the yokes or flange than the splines......
But, I've broke more shafts closer to the yokes or flange than the splines......
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From: Victoria , BC
it is clear you still have missed the point, it is important to increase spline count with diameter. How do I know you missed this? Because you posted this:
Wrongo....
Interesting.... nobody sheers splines off..... maybe not in BGTL? I've seen several shafts sheered off at the splines, from little D30 shafts to D60 stubs. My last stub broke at the spline, right outside of the slug engagement.
Wrongo....
Interesting.... nobody sheers splines off..... maybe not in BGTL? I've seen several shafts sheered off at the splines, from little D30 shafts to D60 stubs. My last stub broke at the spline, right outside of the slug engagement.
Different situation but I once sheared a d44 pinion gear down to no teeth clean!
But I also forgot to add gear oil in pot and it was a snow day and it musta got hot as hell and broke every tooth off. Ring gear wasn't all bad at all though from what I can remember. Maybe if I had like a 2.07 gear ratio with more teeth on pinion it could of made it....
Lol