Engine stand stress analysis

[d.mcfarland]

Some might find this interesting. The stress spots are identified in both pictures.

 

[Bcom]

So what kind of engine was used to determine the stress from the weight? Or did you just use a dummy weight to replace the engine?

 

[larry4406]

Neat!

When I used to do modeling like that we would apply a unit load such as 100 or 1000 lbs. Since solution is linear, the actual result could then be scaled. Say engine weighs 450 lbs yet a force of 100 was assumed. Well, multiply by 4.5 and you have the answer.

I will let the OP respond now.

 

[Bcom]

The 2 above displays are different style stands than the lower one in where stress areas would differ greatly.

 

[Handyfarmer]

when the engine hits the floor it is over loaded,

 

[Pipe]

I want the rotisserie type that meet halfway in the middle on the sides of the block.

Torquing head bolts have made me a little nervous on mine.

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[mikegt4]

I don't like the ubiquitous engine stands like the OP shows. Anything heavier than an aircooled VW on one makes me nervous. I built a rotisserie that also serves as an engine stand. I can adjust the CG as parts are removed or added so it always can be rotated with one hand. Here it is holding an Oliver tractor diesel engine.

 

[Showkey]

There are a lot of marginal engine stands ........but.........has anyone actually have one fail ???

 

[mbshop]

I had two old style heavy duty ones. What I put on them didn't strain them at all. Course I wasn't doing big *** engines either.

 

[tcianci]

Maybe not actually fail, but I had one take quite a sag. It was an inexpensive Chinese stand, light duty with just one caster at the front. Add one assembled Chevy inline 6 and walk away for a few hours. The nose of the engine had dropped by about 3 inches from when I first bolted it up to the stand. This stand was designed to knock down. I tightened everything, then welded it together, adding strap iron in the right places. It served me well after that. I think I ended up giving it to a buddy when my BIL gave me a bigger one.

 

[DanarchyCustoms]

I don't like the ubiquitous engine stands like the OP shows. Anything heavier than an aircooled VW on one makes me nervous. I built a rotisserie that also serves as an engine stand. I can adjust the CG as parts are removed or added so it always can be rotated with one hand. Here it is holding an Oliver tractor diesel engine.

Very very very cool engine stand. Certainly a lot of thought and time went into building it and it shows. Absolutely awesome!

 

[Aerogt01]

Or you could just do a hand analysis and get the same result with less work.

 

[engineer2]

I had a wheel come off on mine, but caught it in time. They used a little bitty E-clip to hold the wheel on. I plan to drill for a cotter pin.

 

[rpcraft]

I had my 5.3 LS engine on one of the ones I got off Amazon and I could not wait to get it off there... Made me nervous as heck. Almost as nervous as using one of the sketchy HF engine hoists, lol.... I think I am at a point where I will not have to use either of those for the truck project motor (knock on wood), but I think the hoist might be something that I can figure out a way to use when installing motorcycle engines into the frames, since they are much lighter. My plan will mostly entail a sideways tilt and slide the frame around the motors...

 

[mikegt4]

Very very very cool engine stand. Certainly a lot of thought and time went into building it and it shows. Absolutely awesome!

A few more photos here, posts 13 & 18.
http://www.garagejournal.com/forum/showthread.php?t=317943&highlight=rotisserie

 

[SnowB0und]

That's funny I was suspect of mine so I threw a piece of wood under the front of the motor.


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