Frequently Asked Questions
A: Lifts are measured by capacity in pounds, rather than the length of the boat. Once you’ve calculated the fully-loaded wet weight of your boat, you can calculate a lift capacity that will safely handle your boat. You should consider what size boat you may be upgrading to over the next few years before purchasing your lift. If you’re not sure about the weight of your boat, please provide us the year, make, and model and we’ll usually be able to get the information. We can accommodate most boats from PWC's to 120,000 lb. yacht's !
A: There are both advantages and disadvantages to elevator type lifts. The advantages are: 1)Outboard pilings are not required, allowing elevators to be used where outboard pilings are not permitted or in cases where there just isn’t room to access a traditional four post lift. The disadvantages are: 1)The tracks stay in the water and need to be protected from electrolysis and ground voltage.
A: In the days before cable winders, the cable would wind directly on the drive shaft. The stainless cable eroded the galvanizing, and the shaft rusted. Cable winders eliminated this issue. The other reason we don't use stainless steel drive shafts is in a twisting situation (which is how the shafts are used) because the stainless driver shafts is far too weak. Our structural engineers will not certify a boat lift using a stainless steel drive shaft. They sound good but they are not safe. IMM has always guaranteed its drive shafts (parts AND labor) for as long as you own the lift.
A: Keeping a boat on a lift will prevent the need for bottom-painting the boat. Bottom painting reduces the value of your boat. You will save on storage fees, wrapping and winterizing fees, while having year-around availability to launch your boat. You will also be able to better protect your boat from storm damage, theft, and vandalism. Most people are surprised to find that installing a lift costs much less than they originally figured. In most cases, lifts pay for themselves within 5-years!
A: There are basically three types of drive bearings 1.Roller Bearings: they seem great, but don't hold up when bolted to an aluminum structure. 2.Metal to Metal: Some manufacturers use bronze, some use aluminum. In both cases, they require lubrication. We feel that a boat lift should free up your time, not waste it. Our price-point lifts utilize greasable bearings 3.Polymer Bearings: Maintenance free, self-lubricating material. IMM / Quality have used this material for many years, and have never had a bearing wear out. IMM warranties the bearings, (Parts and Labor) for as long as you own the lift. We use maintenance-free bearings on our Platinum and High-Speed lift lines.
A: When aluminum lifts first emerged on the market, we all knew they were stronger and longer lasting than steel. The primary drawback was cost. The large structural shapes needed were hard to obtain. As structural aluminum became more common, the cost of aluminum lifts closely approached the price of galvanized. Today there is really no reason to purchase a galvanized lift.
A: If a lift is selected with wooden bunks we will send weights to insure that the cradles will not float. IMM Boatlifts' revolutionary Perma-Bunk 2000, aluminum bunks with white vinyl covers, prevent any cradle-floatation. The aluminum bunks and covers are guaranteed for 10-years. There are inferior aluminum bunks available, but they neither incorporate an “internal I beam” structure, nor have white vinyl covers. Our Platinum and High-Speed series lifts include aluminum bunks.
A: At first glance, the “beamless” boat lifts seem better because there is no “top beam” to be seen from the house. While this is true, there is a trade-off for that benefit. When winch-heads are attached to the sides of the pilings, they exert a side-load on the pilings. Pilings may tend to lean over, or even shift due to the side loading. Many of the beamless lifts have cables that wrap over one another, which foul frequently. Some have load-bearing, under-water cable tie-offs. Conventional top beam lifts can be set in a “low-profile” configuration, which allows you to use covered top beam as a boarding platform, while avoiding the issues associated with beamless lifts. While we prefer conventional top beam lifts, we will build beamless lifts on request.

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