Thinking of building a roll cage a few q's
02-20-2005, 11:54 PM
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Car: 86 z28
Engine: 305 carbed with 3" Y pipe back
Transmission: 700r4 that is breaking down
Thinking of building a roll cage a few q's
well i know how to weld and bend tubing with my trusty tube bender but what type of bit or tool do you use to cut the fisheyes in the ends of the tubes that go perpendicular to other tubes?
02-21-2005, 12:22 AM
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Car: 89 Firebird
Engine: L98
Transmission: T-56
Axle/Gears: 3.73
Well the right way to do it looks some thing like a lathe that has a bit = in dia to the size of the other tube you want to weld it to.
You turn it on and have a vice that you clamp the peice you want to cut in and then you turn a handle push the piece of tube into the cutter. It is very quick simple and perfect but not cheap.
If you can't get one of those, try a hole saw or maybe a plasma cutter and grinder.
You turn it on and have a vice that you clamp the peice you want to cut in and then you turn a handle push the piece of tube into the cutter. It is very quick simple and perfect but not cheap.
If you can't get one of those, try a hole saw or maybe a plasma cutter and grinder.
02-21-2005, 12:31 AM
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Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
I did all mine with a 4" disk grinder. Took longer but still easier than a tubing notcher.
02-21-2005, 07:00 PM
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Car: 86 firebird with 98 firebird interi
Engine: pump gas 427sbc Dart Lil M 13.5:1
Transmission: Oldani TH400 w/ BTE 9" convertor
Axle/Gears: 31 spline Moser/full spool/4.11Rich
Best tool for notching/fish mouthing is a notcher, a simple, quick and very fast method used in many mud packer chasis shops. It's simply a lever with a round die that have compound leverage. You slide in your tubing till it hits the stop, pull down the lever, boom your done, all of 3 seconds to cut a fishmouth, flip it over and do the same.
Cheapest/easiest for normal mere mortals working in their garage would be the drill press specials you can get all day long in speed catalogs/ebay that use a 1/2" drill and hole say. I used one installing my cage and iut was nice, but I admit to relying on the 4" grinder for ultimate joint fine tuning.
The mill would be awesome, but how many guys can afford that type of machinery to make it practical?
Cheapest/easiest for normal mere mortals working in their garage would be the drill press specials you can get all day long in speed catalogs/ebay that use a 1/2" drill and hole say. I used one installing my cage and iut was nice, but I admit to relying on the 4" grinder for ultimate joint fine tuning.
The mill would be awesome, but how many guys can afford that type of machinery to make it practical?
02-24-2005, 04:04 AM
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Car: 86 z28
Engine: 305 carbed with 3" Y pipe back
Transmission: 700r4 that is breaking down
well i have a industrial type drill press and i am looking for a bit that i could notch with maybe im on the wrong track
02-25-2005, 12:15 AM
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Car: 84z, 65 elcamino
Engine: l69 and a hyped up sbc in the camino
Transmission: t5 m21
Axle/Gears: 373s 411s
take it to your local jc since i was enrolled i got to use their fisheye machine but it still wasnt big enuff so i had to plasma cut the rest and then grind away
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