Suggestions for Mechanic's Lift

FrankG
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No votes yet

I'm looking to scratchbuild a single-column car lift that you'd expect to find in a 1940s service station.

At this point, I'm mostly looking for reference material.  The problem is that Google is loaded with modern lifts (mostly two or four column).

Does anyone know where I can get decent reference material?  Or have any knowledge about size, etc?


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ranulf
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http://www.oldgas.com/info/i

http://www.oldgas.com/info/images/massena66d2.jpg

Here's a pic I found c1940.  It's not very close up but since there's a gent sanding quite handily right next to the lift it may be good for some rough scaling.  It would appear that this is a chassis lift, as it looks to me like the tires are hanging free.  I wonder how much detail you need to put into this, Frank?  If you have a car in the air 4 styrene strips to represent the 'arms' glued to the bottom of a car and the top of a rod or wire post would be plenty of suggested detail, wouldn't it?

I would suggest perhaps if you could find a petroliana discussion group, maybe someone knows someone who owns one and could give you dimensions/details.


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FrankG
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Not a lot of detail

I agree that I don't need a ton of detail, but I'm really looking for a photo that shows me the shape and size. 

 Meaning -- is the lift an "H" shape" or does it have multiple cross arms?  Also, how wide are all the "beams" and the thickness of the pole?  How long is the overall lift?

 Overall, I won't need detail per say, but I do want the lift to "look" right.  I plan to put this pretty close to an aisle, so I'm expecting people will try to see all the detail in side.


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Bryan
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From memory (the ones I've

From memory (the old ones I've seen), they where little more than two parallel 'I'-beams a top the lift ram (round pole), with a couple of cross members.

I found this site for repair parts; http://www.autoliftrepair.com/ingliftparts/ingliftparts.html

Towards the bottom of the page is an image of a more modern style. 

Do a search for the listed brand names and "in-ground lift" (or "hoist"), and you should hopefully find some more sites with info.




MRLdave
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Most single post lifts were
Most single post lifts were the H shaped type with two tracks/rails you drove the tires onto. All the posts I ever saw were 12 to 15 inces in diameter.  Most frame lifts were 2 post affairs, with each lift post having a T-shaped top that could be  adjusted for width. One of the lift posts (usually the front) could be slid forward and back so it could be adjusted for different wheelbases. Most gas stations had the H type, since it was the simplest and worked fine for lubes and oil changes. The 2 post type were used in shops that did a lot of work on the wheels...tire shops/brake shops/ect. since it's obviously hard to pull the wheels off when they're setting in the rails. I think most gas stations just did this type of work on the ground, one wheel at a time...at least back in the 40's.  So back to your other size questions...the rails were about 1 foot wide (about twice the width of a tire) and about the length of your average car . I think most had 3 cross members.....a heavy one in the middle that the ram attatched to (usually a little wider than the ram), and a smaller one at each end just to prevent any twisting.


FrankG
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Perfect!
Thanks!  That was exactly the info I was looking for.
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MooseID
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Another thing to consider.......

......is that many gas/service stations had grease pits instead of lifts.  These stations were more limited as to what they could do when compared to a station that had a lift.  In the late 40's and early 50's, as a preteen/teen kid I worked in both types of stations doing lube jobs.  As I recall it, most of the single post lifts were chassis lifts. (Of course I am a septogenarian and my memory may not be as flawless as it once was.)

Who remembers fender skirts on the late 40's Fords and Chevys?

Have fun.

Moose




Bryan
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The one I remember could be

The one I remember could be described as a generic  'H' shape... two parallel beams bridged by a wide cross-member above the ram... it also had pipe cross-members at the ends and half way.

But the beams/rails where in side the vehicle track... you would put blocks of wood on top of the rails to pick up on a point of the frame, the cross-member, or the axle... some times a 4"x4" run east/west across the frame.

The rails where recessed into the floor in a shallow pit.

They where air operated, hence the larger diameter of the ram to support the rated weight, and give it some stability.




Bryan
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For construction

For construction suggestions, I'd use some Plastruct 'I'-Beam (BFS-2), two pieces cut to an appropriate length (maybe ¾")... Bridge them in the middle with some 5/32x.020" (MS-213) at the top flange... add some cross-members made from round rod (MR-025)... glue this assemble on to of a larger stick of rod (MR-100) for the ram...

They had a safety pole that was pivoted next to the ram, laying parallel to the rails, and as it raised would swing into a vertical position next to the ram (as seen in the images on the page I previously linked to)... this could be a piece of thin rod (MR-15), if you planned on having it in the raised position.




Bryan
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FrankG
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Joined: 2008-02-18
Method for Rails

I was experimenting tonight, and I think I found a good method for making the rails.

The service station I'm doing already has a pit cut into the floor, so I'm doing a chasis lift in the next bay for free-wheel services.

I found this on web site that talked about vintage gas stations and the example they used had a pit and a chasis lift.  So that's what I'll do. 

I tried the Plastruct I-beam, but using those in an application like this still always looks like a Plastruct I-beam to me.  So instead, I used two Evergreen channels placed back to back.  This make a more solid looking beam with smaller (thinner) top and bottom, making the "I" of this new I-beam.  It looks a lot more in scale for the rail. 

 I'll make some more progress and see how it goes.

 


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Bryan
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FrankG wrote: ...I tried

FrankG wrote:
 ...I tried the Plastruct I-beam, but using those in an application like this still always looks like a Plastruct I-beam to me...

That's why I suggested the BFS-2 and not the B-2... it has the prototypical tapered flanges...

Any of the Fine series sections have the prototypical look, and the Traditional series are the chunky ones you're thinking of.

http://www.plastruct.com/picat/STRCTURAL_SHAPES_FTGS_9.pdf




FrankG
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Posts: 30
Joined: 2008-02-18
Plastruct
I see.  I don't have those then.  Only the clunky ones.  I'll have to look for the Fine series.  Didn't even know they existed!
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