Harbor Freight 1,320 Electric Hoist in the Rafters?

Might be pushing the limit hanging a lot of weight across the bottoms of trusses regardless how many you bridge. I've got a block and tackle bolted to a 2 x 10 bridging 4 ceiling joists and it's pretty secure. But I only hang deer from it, largest buck was probably around 175 lbs. The bottom of trusses are in general designed for being in tension, not shear. They're there to support a ceiling with insulation and in tension to hold the walls from tipping out.

Bruce
 
Bruce,
I didn’t know you brought home the venison too.
You are a man of many talents.
Isn’t that a skinny deer?
Never shot one myself.
 
My 20 x 20 garage (part of the house) has 2 x 12 joists. I added a retractable stairwell & decked the joists. Only lightweight car parts go up there. Exhaust manifolds are as heavy as I go. 20 years in, it sags just a little. I want to add a gantry - because I won't risk the house for a real load.......

Better to build a shop IMHO.
 
I am certainly not an engineer, and my thoughts are not to be trusted even if I was. But I will put in my two cents from experience.

The ceiling joists are a lot stronger than you'd expect. This is in part due to the fact that they generally hold no real load except in tension (to prevent the walls from splaying and the roof peak falling.) They will also let you know when you've gone too far, generally long before they break. And it will like take breaking more than a couple to bring the whole roof down on your head.

Manual hoist also would have an edge over electric here primarily because they are smoother. One joist can support many hundreds into thousands of pounds static before failure - but get a bounce like you get when a winch spools up and your dynamic loading becomes a real problem.

So my advice is to distribute the load wide as you can, with a beam as tall as you can, and use common sense from there. You can increase the strength of the system greatly by restraining the joists top and bottom with plywood. The big wildcards would be your distance from the supporting wall and the dimension of the lumber. You can get away with a lot more 2 foot from the walls than 12 foot.

And yes, I've lifted hundreds of pounds over just a few rafters, no problem. But the devil is in the details!
 
I have a similar hoist in the shop for lifting heavy items. Mine is the Northern Tool version:

Strongway Electric Cable Hoist 750-Lb. Single Line Capacity, 1500-Lb. Double Line Capacity, 38ft./19ft. Lift | Northern Tool

This Strongway Electric Cable Hoist is a rugged, efficient 120V/60 Hz hoist that makes lifting easy. It lifts loads up to 38ft. at speeds...
www.northerntool.com www.northerntool.com

I have it attached to an I beam with a home made roller dolly similar to this.

Ironton Adjustable Push Trolley 2200-Lb.n Capacity, Fits 3in.W to 8in.W I-Beam | Northern Tool

This Ironton® Adjustable Push Trolley is one of the most economical high-quality trolleys on the market. It can be installed or re...
www.northerntool.com www.northerntool.com

I used it to assemble my Bridgeport Mill and Sheldon lathe. It now gets used to lift chucks, vises, and heavy work pieces to the machines. The heaviest piece it's had to lift so far is in the 500 lb. range.

When I was looking I checked out HF and a few other places as well as Northern Tool. All the hoists looked similar so I'm wondering if they're all made by the same company under different name brands. I settled on the Northern Tool one simply because it had the most information available and the best warranty. I bought mine when it was on sale for about $150.00. One thing I have noticed about Northern Tool is that if you have shopped with them before and look at an item online they will send you an e mail a couple days later with anywhere from a 10% to 20% discount coupon on that item . So far this has applied to even sale items.
 
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I had a center block house the garage was 14x24 and had 2x6 joist every 24" I got 16' 2x6 and doubled each joist that supported the track for the trolley
 
I basically did the same thing that kd4gij did. I "sistered" the ceiling joist with an additional 2x6 that runs over the center of my workbench. It is the full length of my shop. I then hung the trolley track from that and added an 880# electric winch to it. I have lifted my 700# mill up onto it base with no issues... I will say it did make me pucker a little bit. I think if I ever have to lift the mill again, I will put a 4x4 post or two between the joist and the floor for added security. I is extremely handy when getting anything heavy (lawn mower, washing machine, trash compacter, to name a few) up on the bench to wok on...
 
When i first started swapping motors in my garage i used my garage ceiling joist to mount the chain fall and dolly to but i made a few simple cheap modifications before doing so which I will happily share after I State that any action you take you do so at your OWN RISK as there are multiple ways things can go wrong if things are overlooked or questionable materials are used....

  1. starting with the existing 2"x6" joist, I laminated on each side a Layer of 1" structural Plywood then added an additional 2"x6" joist so that the entire beam consisted of 2 layers of plywood sandwiched between 3 layers of 2"x6" lumber. I used the Glue and Screw method to secure it all together.
  2. I then made 3 movable side support columns that I Simply install as close to the material being lifted as possible. These support columns are easily moved along the length of the modified joist and i made 3 so that I would Always have at least 2 contact areas of support. The columns are a simple design. I glued and screwed them together so that they form a "T" looking at it from the end. This keeps them from flexing and are very strong. To stow the colums i simply hung them on either side of the modified beam and ran a screw through to hold them in place since i didn't use them everyday but i Always knew where they were when i did.
Anyway this setup proved to be very strong and had no problem pulling whatever I had lined up, the last of which was a Dodge Ram 5.9L motor with attached transmissions. I used it to pull multiple front wheel drive motors and transmission from Ford Escorts to a few Older Detroit V8 muscle cars needing heart transplants.
 
Janderso said:
Bruce,
I didn’t know you brought home the venison too.
You are a man of many talents.
Isn’t that a skinny deer?
Never shot one myself.
Click to expand...
Well, don't know about the talents, but for a whitetail in our area a 2 1/2 year old buck is about as big as you'll see. I usually shoot 1 or 2 a year depending on the freezer meat situation. I'm 59 and have hunted most years since turning 14. My count is at 40 bucks. First two pictures were from last fall, 5-point 1 1/2 year old (butchered to 61 lbs. of meat), and a 2 1/2 year old 8-point (85 lbs.). We're spoiled, have a really nice place with 64-acres. Nice shop, good kids, great wife, life is very good!

Yeah, bragging . . . I'm not a great shot or an avid hunter. But have enough brain cells to better my odds. Our property has 5/8 of a mile of river frontage. The river trail would be best for hunting as the deer don't cross it unless they have to, really good funneling point. But I don't hunt it since I don't know whose on the other side shooting at me. Not everybody pays attention to where their shot ends up, just not worth the risk to me. The river floods the banks every spring and swamps out a portion of our woods. The deer are lazy and don't walk through the muck, they have a game trail about 10 ft. wide on the high ground. I keep the trail groomed and drop dead fall trees over other trails to keep them funneled on the main trail. Have a feed plot just outside of the woods and a pond for water just beyond. Pretty much just target shoot from the blind, so really not hunting as much as gleaning what we need off the land. My average for times in the blind vs. hanging a deer is about 1/3 over the last 20 years. More working smarter than harder instead of skill.

Bruce

2018 season, 11/18
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2018 season, 11/16
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What happens when you're too close to the scope, but I didn't flinch!
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Same year as the scoped eye, didn't flinch part 2
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Our slice of heaven in Charlotte, MI. 64 acres with a 40 x 96 pole barn. 10 miles as the
crow flies from work. Yup, pretty blessed.
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