Author Topic: Big Lathe?  (Read 4876 times)

mr.mindless

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Big Lathe?
« on: August 01, 2014, 12:43:13 PM »
Does anyone have a lathe that will pass 2.5" stock to consider making our own 7075 suspension links with? Since Matt has the right taps, I figure it's worth pricing material and comparing to the finished product, if someone we know can actually thread them...
Quote from: etk300ex
oh lord!

rejeep

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Re: Big Lathe?
« Reply #1 on: August 01, 2014, 01:16:27 PM »
would a brake lathe work?
I never wanted a red car.. always thought they were tacky and common...
I now have 4 very not common cars and they are all red.. :o

mr.mindless

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Re: Big Lathe?
« Reply #2 on: August 01, 2014, 01:28:44 PM »
I've never actually seen a brake lathe - but I wouldn't expect they have auto feed for tapping or drilling operation, they're pretty much just set up for honing and trueing aren't they?
Quote from: etk300ex
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mr.mindless

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Re: Big Lathe?
« Reply #3 on: August 01, 2014, 01:30:40 PM »
quick google image search and I'm going to give that a definite "no"
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M4wdFab

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Re: Big Lathe?
« Reply #4 on: August 01, 2014, 03:35:10 PM »
i would like to upgrade my lathe to something like this.  be nice to pass 3" for drive shafts.  trouble is they get BIG and HEAVY.   

M4wdFab

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Re: Big Lathe?
« Reply #5 on: August 01, 2014, 03:41:01 PM »
40" of 7075 @2.5" is 20lbs

40" of 2x2x.250 steel is 18lbs


 :o

M4wdFab

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mr.mindless

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Re: Big Lathe?
« Reply #7 on: August 01, 2014, 05:04:35 PM »
wow. I redid your math and their math because I didn't believe it.

on the alu you remove a bit threading it and you're done, and on the steel you weld a bunch of additional to it, so probably nearly same finished weights.

2.25*40 Al = 16.22#
2*40 Al = 12.87#

steel math:
40*(2^2 - 1.5^2)*.2904 = 26#

bah!
Quote from: etk300ex
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M4wdFab

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Re: Big Lathe?
« Reply #8 on: August 01, 2014, 05:13:52 PM »
source for .29 number?


i guess my random first google source without grade was poor

meh, i guess 1020 is .28

mr.mindless

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Re: Big Lathe?
« Reply #9 on: August 01, 2014, 05:24:48 PM »
I used the first "mild steel" number I found...
Quote from: etk300ex
oh lord!

gif

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gif

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Re: Big Lathe?
« Reply #11 on: August 02, 2014, 01:09:53 PM »
Does anyone have a lathe that will pass 2.5" stock to consider making our own 7075 suspension links with? Since Matt has the right taps, I figure it's worth pricing material and comparing to the finished product, if someone we know can actually thread them...

have you found a place to buy sticks?   




mr.mindless

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Re: Big Lathe?
« Reply #12 on: August 02, 2014, 04:39:42 PM »
Haven't looked without knowing of a a lathe to work them with.
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M4wdFab

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Re: Big Lathe?
« Reply #13 on: August 02, 2014, 08:12:04 PM »
im sure Nolan or surplus could get it easy

M4wdFab

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Re: Big Lathe?
« Reply #14 on: August 05, 2014, 04:22:06 PM »
emailed for specs on this gem

http://elmira.craigslist.org/tls/4584536380.html