The jack shaft of my door is 2 3/4" from the ceiling (measured to the center of the shaft) Will this opener connect directly to the jack shaft, or will I have to adapt it with sprockets and a drive chain? The jack shaft of my door is 2 3/4" from the ceiling (measured to the center of the shaft) Will this opener connect directly to the jack shaft, or will I have to adapt it with sprockets and a... » Read More The jack shaft of my door is 2 3/4" from the ceiling (measured to the center of the shaft) Will this opener connect directly to the jack shaft, or will I have to adapt it with sprockets and a drive chain? « Show Less
524627
A quick measurement on mine looks like the shaft center to the top of the unit is about 3" so it will be close. I am not sure where you are measuring from but normally there is a bit more clearance considering the wheel attached to the shaft is much larger in diameter than the shaft itself.
524628
a google search reveals that you need 3" clearance. There is a product that might help youhttp://www.northshorecommercialdoor.com/limo48rjo38a.html
2234557
The only problem I see that when you add extension you may have to support the rail in the middle otherwise it may sag or deflect in the middle that may cause the chain sag too. Make sure when you add support it has to be attached on the top of the rail to clear the chain interference. This is 3/4hp opener will do the job. Good luck.ss
2140427
I also have a 2 in frame. There is a plate welded to the jack to fit on one side of the frame and a loose plate that you will bolt on to it from the other side of the frame. The plate could probably fit up to a 4in frame but as you tighten the bolts, it does not move or slide. I have not had any issues or worries about the integrity of the jack moving at all.
463894
Hello, I think the chain was originally 12 inches. I had cut mine to be the right length for my ceiling fan, so I really don't remember for sure.
286901
I looked at the male end that has the battery end and took off the middle part where the two ends meet to the chainsaw and shorted it to one long part of female to male ends and you have a 4foot range to the chainsaw. But there noway to take the chainsaw , to make it work like that. like a normal chainsaw would. the exstra 4foot is better on your back anyway.
1503818
My opening is 35.5 inches and it worked well without any alteration. As "Scott" says, the whole product depends on 4 hinge points with 3 rod sections. I looked at mine and I have some doubt about taking the entire 3" off just the center section only. It will work to take 1" off each rod. The only problem I see is that the "rods" are tubing and the hole for the bolt that holds the tubing to the joint knuckle is bent inward to form a countersink. When you cut the tubing off, the flat head bolt will not seat into a counter sink position and will not be as attractive. I think I would replace the factory bolt with a regular head bolt of the same size. I took a pic for clarification but I don't see a way to attach a photo. My opening is 35.5 inches and it worked well without any alteration. As "Scott" says, the whole product depends on 4 hinge points with 3 rod sections. I looked at mine and I have some doubt about taking the entire 3" off just the center section only. It will work to take 1" off each rod. The only problem I see is that the "rods" are tubing and the hole for the bolt that holds the tubing to the joint knuckle is bent inward to form a countersink. When you cut the tubing off, the flat head bolt will not seat into a counter sink position and will not be as... » Read More My opening is 35.5 inches and it worked well without any alteration. As "Scott" says, the whole product depends on 4 hinge points with 3 rod sections. I looked at mine and I have some doubt about taking the entire 3" off just the center section only. It will work to take 1" off each rod. The only problem I see is that the "rods" are tubing and the hole for the bolt that holds the tubing to the joint knuckle is bent inward to form a countersink. When you cut the tubing off, the flat head bolt will not seat into a counter sink position and will not be as attractive. I think I would replace the factory bolt with a regular head bolt of the same size. I took a pic for clarification but I don't see a way to attach a photo. « Show Less
210458
Depends on how high your garage ceilings are. If they are 10 feet then clearance is not an issue. If they are 8 feet then the opener will hang low and COULD be a clearance issue with some higher profile vehicles.
2081111
I was able to fit it to the shaft on my motor by heading the shaft with a soldering torch and then pushing the fan on the shaft. Works fine. The fan comes with a plain hole, no spline, flats or thread.
1600147
You need a floor jack having the plate (part which contacts the car frame when you lift) that is removable. It just lifts out typically. The bottom of that plate has a large pin which sits into the lift arm of the jack. The pin diameter of this adapter is 1 5/32", and needs to fit in the hole of the jack that your plate comes out of. So this won't fit on a cheapo jack, nor would you want it to.
334549
I have a 10 foot tall door and I had to buy the extension for my door to open all the way up, so if your door is 9 foot I would think you would have to purchase the extension too for your door to open all the way up. Standard garage doors are 8 foot.
1826430
Cable lift has the springs raped around the jack shaft and standard style has the conventional pair of long springs hanging on the upper track to pull the door up. The Lift Master pulls the door up from the jack shaft with the assist of the spring. In other words if you have big long springs hanging from the end of both upper tracks the Lift Master won't work for you. Hope this helps Leon
1287723
The jack pokes out but just enough to connect. That's why if you put it together the wrong way (backwards) it does not get full contact.
1537699
I mounted my two openers side by side with about 18" between the two in the center of the garage , looks really good With them in one central location plus made it easy running the circuit also, only had to have one receptical for the two of them. On the length of the shaft going into the opener I went with lengthof the collar that is on the opener plus the length of the coupling that connects the shaft to the opener.Also u need to remember to have some clearance away from the bearing that the shaft runs through
1680898
I have seen on this thread that one person says the hook from the top of the cabinet door to where it forms a right angle for the trash can is "just over 2 inches" then another person says "3 inches". Can you confirm what exactly is the measurement from the top of the attachment down to where the trash can lid forms a right angle? I ask b/c I need a 2.5" drop or else my door will not close so "just over 2 inches" probably won't work but "3 inches" will. PLEASE HELP! thank you!
157820
Yes, the wire that extends from it is about 3ft and as it comes, you would wind it through the chain and cut it to the length you wish.. If you don't want a chain, install it flush to the ceiling and cut the wire accordingly.
995226
I measured 18-1/2" from the ceiling also. Both of my fans are flush mounted (as close to the ceiling as possible), but they can be mounted with an extension if you have high ceilings. When you say "from the ceiling mount" do you mean from the bottom of the ceiling plate that covers the hole in the ceiling? If so, I can't measure from the bottom of that as the motor (which is below the ceiling plate cover) is much wider than the ceiling plate cover. I hope this helps.
1782521
I have not used mine yet. It is not going to fit my current floor jack, so I will probably by a cheap jack at Harbor Freight when I need to use it. It looks like it just slips into the center hole of the jack. Sorry not much help.