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Old 10-14-2019, 08:39 AM
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Default First real project, ideas, tips?

So I finally learned to weld in shop class. We have about 5 or 6 Briggs and Stratton 5hp in the back and Iím going to see if the teacher will let me Frankenstein one together. I also found a $40 bike at the thrift store, and if I mashed them tighter I could have something that I could easily ride to town on. I have access to a lot of tools in the class, so I can use a CNC plasma for sprockets and engine plates. Does anyone know the mounting pattern for a 5hp Briggs? Thanks.
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Old 10-14-2019, 09:21 AM
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Without hardening the sprockets they’ll last about as well as a fart in a whirlwind. We use hard anodized rear sprockets on our race karts and have to replace them regularly.
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Old 10-14-2019, 09:56 AM
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Ok, thanks. Can I just use any old oil to harden it?
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Old 10-14-2019, 10:22 AM
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Default Pick your Battles

I've found that sometimes it's best to "pick your battles"

You can make a nice, long lasting motor mount
(it's actually a mount for an engine but, that's another story)
...but, you'd be better off buying a "proper" sprocket
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Old 10-14-2019, 12:35 PM
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I would like to put this together as cheaply as possible. I can just cut a new one if I need it. Does anyone know the mounting pattern for a 5hp Briggs? Also, what gear ratios would you recommend?
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Old 10-14-2019, 12:52 PM
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Hold on, let me measure my 3 HP Briggs, I believe they're the same bolt pattern.

---------- Post added at 12:52 PM ---------- Previous post was at 12:45 PM ----------

About 3 1/4" W by 6 1/2" L, center to center.
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