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Building the Chassis Fixture (Finished)

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Building the Chassis Fixture (Finished) Empty Building the Chassis Fixture (Finished)

Post  Doug Rahn February 20th 2011, 1:17 pm

I got some of the material to build the chassis fixture. I recently sold some spare parts and stock stuff here and on another site, so I put some of the money in the account for the race car and spent the rest on this fixture. I've made some sliding fixtures that will slide the entire length of the beams for jig points that will need to be movable. I have David Willingham making some fixed points for me that will either be bolted down or just clamped. Next thing is to get Mike to do some machine work for me on his milling machine. The cross beams need to be pretty accurate and me doing it by hand just ain't gong to cut it. I did one end and it took me way to long to do it Sad .

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Last edited by Doug Rahn on April 10th 2011, 11:55 am; edited 1 time in total
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Post  IDT-572 February 20th 2011, 2:05 pm

Nice................. Cool
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Post  Frank Merkl February 20th 2011, 4:07 pm

looks good!
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Post  Doug Rahn February 20th 2011, 6:47 pm

Thanks guys! It's going to be a breeze squaring and leveling this thing out. What really surprised Shocked me is how straight the "I" beams are. I stretched a piece of .040 music wire along the length of the beam with about 400 lbs. tension on it, and the worst of the two only had about .025 of crown in the top and .050 bow along the side Very Happy .
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Post  IDT-572 February 20th 2011, 7:08 pm

Wow, I would have lost that bet .............. Red and I have talked about building a chassis jig, but just haven't gotten to it yet. I hope to learn something watching you............ Wink
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Post  BigDave65 February 20th 2011, 7:14 pm

Looks Good!
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Post  bruno February 20th 2011, 8:13 pm

love the aluminum idea and the slideble jigs ...very nice Doug

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Post  DILLIGASDAVE February 21st 2011, 6:13 am

How high off the ground are you thinking about making the jig sit?
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Post  Doug Rahn February 21st 2011, 6:27 pm

DILLIGASDAVE wrote:How high off the ground are you thinking about making the jig sit?

About 20 inches to the top of the beam.
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Post  dfree383 February 22nd 2011, 8:50 am

Why Aluminum? Isn't steel much more rigid?
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Post  Doug Rahn February 22nd 2011, 5:57 pm

dfree383 wrote:Why Aluminum? Isn't steel much more rigid?

Lighter and easier to move around the shop. The way I have the whole deal designed it will pretty rigid, and when it's not being used I will be able to take it apart and hang the beams on the wall.
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Post  Doug Rahn March 6th 2011, 12:55 pm

Today I did a preliminary mock-up on one end to make sure the parts I drew up in CAD are going to fit. So far, so good with one minor problem. The 6" aluminum angles that will tie the cross beams in to the two main beams are not 90 degrees. I'm sending those to David Willingham and have him mill them to 90 degrees. Once I get those done I'll start drilling holes, (5) grade8 1/2" bolts in each flange.

Building the Chassis Fixture (Finished) DSCF1807

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Post  bruno March 6th 2011, 7:15 pm

very nice work Doug ....why dont you make 2 while you are at it Very Happy Wink


Last edited by bruno on March 6th 2011, 8:09 pm; edited 1 time in total

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Post  Doug Rahn March 6th 2011, 7:58 pm

bruno wrote:very nice work Dave ....why dont you make 2 while you are at it Very Happy Wink

Who's Dave, Nick?
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Post  bruno March 6th 2011, 8:10 pm

fixed Embarassed .....typed to fast and too many beers , celebrating my new rig ........sorry

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Post  72mav March 6th 2011, 10:30 pm

Nice setup Doug,
Whats the full material spec on the beams?

Regards.
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Post  Doug Rahn March 6th 2011, 11:18 pm

72mav wrote:Nice setup Doug,
Whats the full material spec on the beams?

Regards.
Al

6061-T6
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Post  72mav March 7th 2011, 10:53 am

$$$$$ Laughing

Thanks Doug.
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Post  Doug Rahn March 12th 2011, 4:31 pm

I worked on the fixture a little bit today. My back is hurting some, so I didn't do a whole lot. Anyway, I got the 6" angles shipped off to David Willingham yesterday to correct the 90* angle. Clamped up two of the cross beams and started adding the legs. Everything squared up real nice, I must have checked everything a dozen times before I drilled a hole. More to come later.

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Post  '65 T-BOLT March 13th 2011, 1:42 am

Nice work Doug!
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Post  Wayne Pearce March 13th 2011, 9:13 am

Is that a Lazy Boy recliner in the shop? Damn, I wouldn't get ANYTHING done!! (LOL)

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Post  QtrWarrior March 13th 2011, 9:16 am

Wayne Pearce wrote:Is that a Lazy Boy recliner in the shop? Damn, I wouldn't get ANYTHING done!! (LOL)

Wayne

Grandpa needs his rest... Cool Cool lol
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Post  Doug Rahn March 13th 2011, 11:39 am

Wayne Pearce wrote:Is that a Lazy Boy recliner in the shop? Damn, I wouldn't get ANYTHING done!! (LOL)

Wayne

Sure is Very Happy . Doesn't every man cave have one? Laughing Laughing Laughing Laughing

QtrWarrior wrote:
Wayne Pearce wrote:Is that a Lazy Boy recliner in the shop? Damn, I wouldn't get ANYTHING done!! (LOL)

Wayne

Grandpa needs his rest... Cool Cool lol

Very funny, as Chuck would say, you "RLK"! Laughing Laughing Laughing Laughing Laughing
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Post  racnrick March 13th 2011, 11:49 am

Wayne Pearce wrote:Is that a Lazy Boy recliner in the shop? Damn, I wouldn't get ANYTHING done!! (LOL)

Wayne

And it looks to be a remote control on the right arm of it too. Cool

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Post  Doug Rahn March 13th 2011, 1:19 pm

racnrick wrote:
Wayne Pearce wrote:Is that a Lazy Boy recliner in the shop? Damn, I wouldn't get ANYTHING done!! (LOL)

Wayne

And it looks to be a remote control on the right arm of it too. Cool

Yep! Gotta have cable in the man cave! Laughing Laughing Laughing
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