Right you are - do not let my civil engineer friend know of my mistake - they are still giving me a hard time when I mixed up cement and concrete terms :)
Cool stuff, I will use something similar for my beer benches and table! This is exactly what I need, thank you for this great information. Detailed enough to understand everything. Maybe this is sold to Germany as well ?
The black straps came with the Harkin system. The green straps are regular ratchet straps that I bought from a big box store (I think it was rated for 300# safe load each for about $12.) I just added an additional set of 4 hooks to independently attach the green straps as a backup system for the Harkin system.
Great video. I am going to build something similar very soon. One observation I have is on the anchor point of the pulley system. You have only 1 eyebolt holding the entire system while lifting/lowering. Do you think reinforcement should be added there? My system will have 4 eyebolts supporting my rtt and 1 at the anchor point. I have calculated all of the forces and it seems it will be sufficient.
It will never hurt to add more - but I did get a similar question a few months ago and here was my reply "That one got me thinking, the static force would have to be 200 lbs. In my set up, a portion of the weight of the tent is taken up by my backup system. However, I still wanted to investigate your point. The maker of the hoist system must have done this calculation on the vertical wall otherwise they would not sell this system. I found an equation to calculate the screw allowable withdrawal load (F=2880 * SG^2 * dia of screw). If I use an average specific gravity of pine to be 0.4 #/in and a 0.25 diameter screw, this gives a load of 115 #/in penetration meaning that you need to screw the at least 2 inches into the wood to hold 200#." One just has to make sure that they are in the heart of the 2 x 4 stud.
This might be a ridiculous question - the chrome strap you disconnected with your glove, technically is holding all of the weight? When suspended by the hoist, if the chrome buckles failed, the tent would fall to the floor? Sorry, I’m just confused how the 4 lines coming down from the ceiling are secured to or around the tent. Thank you!
Yes, you are right - the black strap with the chrome buckle is holding all the weight when I lower the tent. Since the system is rated for 200 #s, the buckles should be rated for at least that amount and since they seem to be very sturdy, I bet that they are rated for a lot higher. After 3 years of use, I have not seen any fraying of the straps and confident of the system's ability (but I still use the green straps as a backup). Go to time stamp 12:29 to see how I remove the tent from the truck and onto the hoist system. I slip the black strap underneath the tent while it sits on the bed rails (the tent sits about 4-5 inches above the bed of the truck), then I buckle the straps together.
That one got me thinking, the static force would have to be 200 lbs. In my set up, a portion of the weight of the tent is taken up by my backup system. However, I still wanted to investigate your point. The maker of the hoist system must have done this calculation on the vertical wall otherwise they would not sell this system. I found an equation to calculate the screw allowable withdrawal load (F=2880 * SG^2 * dia of screw). If I use an average specific gravity of pine to be 0.4 #/in and a 0.25 diameter screw, this gives a load of 115 #/in penetration meaning that you need to screw the at least 2 inches into the wood to hold 200#.
I just looked at Amazon (FYI - I do not get any compensation, so no conflict of interest) - they have it as "HARKEN - Truck Cap Overhead Garage Storage Hoist, Self-Leveling, Safe Anti-Drop System, Easy One-Person Operation, Smart Garage Organization". Amazon lists the different models and it is hard to read the model #, so I checked the Harken website. I got the #7806 10 foot model (On Amazon - it looks like either a 4 or 6). This model can handle 200 lbs - just make sure it is the 200 lb version. Since my RTT is 200 lbs, as shown in the video, I added an additional strap system independent of the hoist system that helps carry the weight during storage. The kit does not come with any of the wood - so make sure your wood is not curved or bowed (not the end of the world but makes it easier to install). The Harkin Website has a great video on the install. www.hoister.com/productdetail.aspx?id=6160&taxid=648
Yes - there is more than enough rope to put the tent on the ground. In fact, my original lift was from the ground. I lifted the tent about 1 foot and let it rest a few hours to make sure my installation of the hoist system worked as expected. And since then, I have raised/lower the tent several dozen times without issue.
I do not see why you could not add a winch. However, even manually, it does not weigh too much. If you add a winch, just be careful on how much space you need to spool up the rope. Since it has it has 5 or 6 pulleys, you need 5 or 6 feet of rope to spool for every 1 foot of vertical tent movement.
![АЛАУДИНОВ у Скабеевой: эти их ВСУ нас НЕ ДОГОНЯТ 😁 [Пародия]](http://i.ytimg.com/vi/an0anqU4WGQ/mqdefault.jpg)
Very informative, I like the green safety straps!
Very informative video. You answered many of the questions I have been dwelling over as I look for a way to store my RTT in the garage. Thanks 👍
Thanks for the feedback - I had to figure out how a one-person system would work while insuring it would never fall on my wife's car.
Enjoyed the video and your extra safeguards to prevent a failure. Thanks
Rafters are the boards that are angled and form the roof. Joists are the boards that run horizontally and form a floor or ceiling.
Right you are - do not let my civil engineer friend know of my mistake - they are still giving me a hard time when I mixed up cement and concrete terms :)
Cool stuff, I will use something similar for my beer benches and table!
This is exactly what I need, thank you for this great information. Detailed enough to understand everything.
Maybe this is sold to Germany as well ?
U R Great
what straps did you use to hold up the tent while storing and how did you attach them to the pulley system.
The black straps came with the Harkin system. The green straps are regular ratchet straps that I bought from a big box store (I think it was rated for 300# safe load each for about $12.) I just added an additional set of 4 hooks to independently attach the green straps as a backup system for the Harkin system.
Great video. I am going to build something similar very soon. One observation I have is on the anchor point of the pulley system. You have only 1 eyebolt holding the entire system while lifting/lowering. Do you think reinforcement should be added there? My system will have 4 eyebolts supporting my rtt and 1 at the anchor point. I have calculated all of the forces and it seems it will be sufficient.
It will never hurt to add more - but I did get a similar question a few months ago and here was my reply "That one got me thinking, the static force would have to be 200 lbs. In my set up, a portion of the weight of the tent is taken up by my backup system. However, I still wanted to investigate your point. The maker of the hoist system must have done this calculation on the vertical wall otherwise they would not sell this system. I found an equation to calculate the screw allowable withdrawal load (F=2880 * SG^2 * dia of screw). If I use an average specific gravity of pine to be 0.4 #/in and a 0.25 diameter screw, this gives a load of 115 #/in penetration meaning that you need to screw the at least 2 inches into the wood to hold 200#." One just has to make sure that they are in the heart of the 2 x 4 stud.
This might be a ridiculous question - the chrome strap you disconnected with your glove, technically is holding all of the weight? When suspended by the hoist, if the chrome buckles failed, the tent would fall to the floor? Sorry, I’m just confused how the 4 lines coming down from the ceiling are secured to or around the tent. Thank you!
Yes, you are right - the black strap with the chrome buckle is holding all the weight when I lower the tent. Since the system is rated for 200 #s, the buckles should be rated for at least that amount and since they seem to be very sturdy, I bet that they are rated for a lot higher. After 3 years of use, I have not seen any fraying of the straps and confident of the system's ability (but I still use the green straps as a backup). Go to time stamp 12:29 to see how I remove the tent from the truck and onto the hoist system. I slip the black strap underneath the tent while it sits on the bed rails (the tent sits about 4-5 inches above the bed of the truck), then I buckle the straps together.
Hello. You have a lot of structural support on the roof but do you not have 200lbs pulling on that single eyebolt on the vertical wall?
That one got me thinking, the static force would have to be 200 lbs. In my set up, a portion of the weight of the tent is taken up by my backup system. However, I still wanted to investigate your point. The maker of the hoist system must have done this calculation on the vertical wall otherwise they would not sell this system. I found an equation to calculate the screw allowable withdrawal load (F=2880 * SG^2 * dia of screw). If I use an average specific gravity of pine to be 0.4 #/in and a 0.25 diameter screw, this gives a load of 115 #/in penetration meaning that you need to screw the at least 2 inches into the wood to hold 200#.
Hi, how mony your toyota, i love toyota
Thanks, nice video, would you please provide the exact model number for the system. i found many Harken hoister system and got confused. thanks
I just looked at Amazon (FYI - I do not get any compensation, so no conflict of interest) - they have it as "HARKEN - Truck Cap Overhead Garage Storage Hoist, Self-Leveling, Safe Anti-Drop System, Easy One-Person Operation, Smart Garage Organization". Amazon lists the different models and it is hard to read the model #, so I checked the Harken website. I got the #7806 10 foot model (On Amazon - it looks like either a 4 or 6). This model can handle 200 lbs - just make sure it is the 200 lb version. Since my RTT is 200 lbs, as shown in the video, I added an additional strap system independent of the hoist system that helps carry the weight during storage. The kit does not come with any of the wood - so make sure your wood is not curved or bowed (not the end of the world but makes it easier to install). The Harkin Website has a great video on the install.
www.hoister.com/productdetail.aspx?id=6160&taxid=648
@@ruffnitinretirement964 many thanks, appreciate your detailed feedback!
Can you lower it all the way to the ground?
Yes - there is more than enough rope to put the tent on the ground. In fact, my original lift was from the ground. I lifted the tent about 1 foot and let it rest a few hours to make sure my installation of the hoist system worked as expected. And since then, I have raised/lower the tent several dozen times without issue.
Nice. Can you add a winch
I do not see why you could not add a winch. However, even manually, it does not weigh too much. If you add a winch, just be careful on how much space you need to spool up the rope. Since it has it has 5 or 6 pulleys, you need 5 or 6 feet of rope to spool for every 1 foot of vertical tent movement.
@@ruffnitinretirement964 Thank you. Where did you get your pigtail style hooks to hold the hoist?
The pigtail screw came as part of the kit from Harken.
As soon I saw the glove I had to change it !