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| Ferrari Drop Gears http://gemellocattivo.com/forum/viewtopic.php?f=7&t=192 |
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| Author: | TheDarkSideOfWill [ Sun Jan 08, 2017 1:51 pm ] |
| Post subject: | Re: Ferrari Drop Gears |
And straight cut... yikes. |
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| Author: | mk e [ Sun Jan 08, 2017 4:37 pm ] |
| Post subject: | Re: Ferrari Drop Gears |
TheDarkSideOfWill wrote: And straight cut... yikes. Very loud. I spoke to a guy years ago about making helical sets in 1 ratio and I think it was 5k each on a 10 set order....a lot of money and everyone would need to agree on the ratio. Or you could move the idler like I did. |
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| Author: | Martini [ Wed Mar 20, 2019 7:09 am ] |
| Post subject: | Re: Ferrari Drop Gears |
In layman's terms, what are the biggest challenges to building gear sets for someone who has a lathe and a milling machine? |
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| Author: | mk e [ Fri Mar 22, 2019 8:23 pm ] |
| Post subject: | Re: Ferrari Drop Gears |
Martini wrote: In layman's terms, what are the biggest challenges to building gear sets for someone who has a lathe and a milling machine? The biggest problem is most gears have a helix or twist to the cut and while that can be done on a manual machine its really slow to try if you don't have a helix adapter for the mill, which I've only ever seen once in my life. The second problem is metal distorts when its heat treated so gears and other precise stuff is normally ground to finish size after hardening. You can cut with carbide tools depending on hardness...but grinding it better. |
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| Author: | Martini [ Sat Mar 23, 2019 6:06 am ] |
| Post subject: | Re: Ferrari Drop Gears |
...so straight cuts would be much simpler? |
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| Author: | mk e [ Sat Mar 23, 2019 6:49 am ] |
| Post subject: | Re: Ferrari Drop Gears |
Martini wrote: ...so straight cuts would be much simpler? YES! You still want to do the finish work after heat treat but with a lathe, mill, rotary head you can do it. All traight cut gears and any lower tolerance gear is loud but they work fine. |
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| Author: | Martini [ Sat Mar 23, 2019 11:53 am ] |
| Post subject: | Re: Ferrari Drop Gears |
I was assuming it wasn't too hard to make a custom grinding wheel, of course. Well, keep up the great work guys, it's a pleasure to read |
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