OEM Boat Props Vs. Aftermarket Boat Propellers

Posted by on Feb 18, 2018 in Boat Propellers, Boating | 0 comments

OEM Boat Props Vs. Aftermarket Boat Propellers

OEM stands for original equipment manufacturer that means the manufacturer of the the OEM boat props that usually come on your boat and the marine drive system on your boat. If you want a different boat prop or spare boat propeller you have a choice of either purchasing an OEM propeller or a prop made by an independent company that makes props to fit your drive unit. These aftermarket manufacturers have been around almost as long as the original equipment manufacturers have. There is a huge market for boat props because they are easily damaged and need to be repaired or replaced by most boaters at some point in time.

Pros and Cons of OEM Boat Props vs. Aftermarket Boat Propellers

OEM boat props are usually more expensive than an aftermarket equivalent. In many applications they do not perform any better or much better than some of the aftermarket boat propeller brands. The quality of most of the aftermarket boat props has improved over the years and are generally now excellent quality propellers. There is very little difference in the looks of either types of boat propellers and you can get most of the same sizes of the OEM boat props in the aftermarket brands both in aluminum and stainless steel. There are propeller makers of both types based in the US and there are companies based overseas.
There will always be boaters who will run only OEM boat props because they believe they are much better and there are boaters who are put off on the high prices of a lot of the OEM products and have found that the aftermarket stuff works just fine most of the time.

For more information on the propeller brands please visit our boat propellers website that is full of information on OEM boat props. Or call us at 1-800-573-5533 for information.

McGard Other Marine and Boat Propeller Locks

Posted by on Feb 10, 2018 in Boat Accessories, Boating | 0 comments

McGard Other Marine and Boat Propeller Locks

Last week we posted a blog about McGard boat propeller locks that told you what a great way to protect your boat propellers from being stolen McGard locks are. This week we will feature their other marine locks offered by them. They have sterndrive locks, outboard motor locks and also boat trailer wheel locks.

McGard uses the same type of lock design for all their locks. The reason why they protect so well is they have a free spinning collar that surrounds the unique nut they use so you cannot get a hold on the nut with pliers or other gripping tools.

McGard offers sterndrive locks the you use in place of one of the standard nuts that secures the drive to the pivot housing. Sterndrives are not that hard to take off a boat if you know how to do it. It really does not take much more time to remove sterndrives than it does boat props.

Outboard motors of all sizes and horsepower can be secured to the boat transom with the McGard outboard motor locks. Again you use their lock system in place of one of the through the transom bolt nuts to keep your motor safe from theft.

Boat trailer wheels can be easily be stolen by thieves and are stolen more often than any other marine product. McGard wheel locks are put on in place of one of the lug nuts so you are protected from losing your trailer wheels.

As with all McGard marine locks make sure you do not lose the special socket from them that is used to remove their special nut. Keep the package the locks come in when you buy them and also the sales receipt for proof of purchase. I think there is a serial number stamped on the package the indicates what unique locking design your lock is. You can then contact Mcgard and get a replacement removal socket if you do lose the original one.

We offer great discounts on all boat propellers for all modern engines on our website or you can call us at 1-800-573-5533 for pricing and recommendations.

Guarding Boat Propellers from Propeller Theft

Posted by on Feb 3, 2018 in Boat Propellers, Boating | 0 comments

Guarding Boat Propellers from Propeller Theft

If you think about, it does not take much time to take off  boat props from a marine engine propeller shaft. It could take less than a minute for propeller theft to occur. The bad guys know that and thousands of boat propellers have been stolen off boats over the years. Mostly Stainless Steel Propellers because they are worth considerably more money than Aluminum Propellers. If you keep your boat out of the water and on a trailer and park it somewhere like in a storage facility or your property outside, your boat prop could be an easy target for thieves. Even if you keep your boat in the water your boat propeller can still be taken off under the water without much trouble.

The good news is there is a simple solution to propeller theft that does not cost much and is easy to install. A company called McGard makes excellent prop locks that you put on after the propeller in place of the prop nut and is torqued down the same way as the nut. Instead of using a regular socket or pliers you use their special socket that has a unique pattern to it that goes into their matching nut pattern. Regular tools cannot be used to remove the special nut, pretty much only the McGard socket can do that. If you do install one of these locks do not ever lose that special socket You will be sorry you did. The locks are made of hardened stainless steel which makes them almost impossible to penetrate without damaging the boat propeller.

McGard also makes locks for sterndrives and outboard motors. We are going to start offering McGard products this year plus many more boating items. So please check out our website for new discounted products this season along with the huge selection of boat propellers we sell at super, discount prices.

Suzuki Outboard Motor DF350A with counter rotating dual prop system

Posted by on Jan 27, 2018 in Boat Propellers, Boating | 0 comments

Suzuki Outboard Motor DF350A with counter rotating dual prop system

Using their own version of the counter rotating dual prop system for boat propellers Suzuki started working on a new outboard motor project over three years ago. The Mercruiser and Volvo Penta stern drives have had their twin boat prop systems on the market for years and Yamaha also had their VMAX one hundred and fifty horsepower TRP outboard that used two props but they no longer make the TRP. The new three hundred and fifty horsepower four stroke engine is Suzuki’s most powerful engine they have ever made and it is loaded with innovative design features besides the two boat propeller propulsion system. This engine has a 4.4 liter V-6 powerhead with a highest outboard motor compression ratio of twelve to one for more powerful torque performance.

The gearcase was able to made slimmer for less drag and better flow of water to the boat props by moving the shifting mechanism to the top part of the case. This gearcase design is far different than any other gearcase design offered by other outboard motor manufacturers today.

The prop shaft turns both boat propellers in forward and reverse and uses a single pinion gear to turn the shaft. The DF350A weighs in at about seven hundred and twenty five pounds, just under ninety pounds more than the three hundred horsepower Suzuki.

The DF350A holeshot is extremely quick thanks to almost double the propeller blade surface area it has compared to single boat prop outboards.This Suzuki lifts the stern of larger heavier boats very well for faster planing. It also performs fantastic in turns with very little slippage and overall gas mileage is excellent also because of less slippage. Pricing on the DF350A is in the thirty thousand dollar price range.

Powertech Propellers which is one brand of boat props that we sell is working on producing counter rotating boat props for these engines and they should be available soon. For propellers on single boat prop engines please check out our discount propeller selection or call us at 1-800-573-5533

Inflatable Boats

Posted by on Jan 20, 2018 in Boat Propellers, Boating | 0 comments

Inflatable Boats
Small inflatable boats that you can mount an electric motor or gas outboard engine on have become popular in recent years because they are an inexpensive type of boat to use on the water. The performance boat props used can also be inexpensive.
Improvements in designs and on durability are another reason for their increase in inflatable boat sales . Cost on these boats range from a few hundred dollars up to a few thousand dollars for a two, four, six  or more person capacity boat that is around eight to fourteen feet or more in length. Fishing or just putting around on the water are mostly what they are used for. They can easily fit deflated in the back of a pickup truck or SUV. You can quickly inflate the boats various air chambers with an electric air pump and mount the engine and be ready for the water in just a few minutes. You can only use low powered engines on the small inflatables because they can not support heavy engines but speeds of five to ten miles an hour be attained. Small high speed Catamaran hull style inflatables are available that can go up to seventy miles an hour with outboard gas engines using performance boat props.

There are many companies that make these boats and there are great number of models to choose from. Some of these companies are Intex, Zodiac, Sea Eagle, and Sevylor. There are more brands of inflatables you can search also. If you want to get on the water but don’t want to spend a lot of money these boats are a good option to consider buying. They are lightweight and are portable with no need of a boat trailer. If you do buy one of these inflatables with an engine we alway suggest you have a spare boat prop.

 We have great discounts on all the performance boat props that we sell online and by phone if you call us at 1-800-573-5533.

Boat Propeller Shaft Thrust Washer

Posted by on Jan 15, 2018 in Boat Propellers, Boating | 0 comments

Boat Propeller Shaft Thrust Washer

If you own a boat that has an outboard motor on it or boat with a sterndrive system, the propeller shaft must have what is called a thrust washer on it that is positioned on the shaft in front of the boat propeller. The thrust washer has two functions. The first reason why you must use one is it stops boat propellers from sliding forward on the prop shaft while being run in forward gear. That would cause damage to the lower unit housing from coming in contact with the rotating boat prop.

The propeller would also be damaged which would not be repairable along with possibly the lower unit housing not being repairable. The second reason is it centers and secures the front of the boat prop when the prop nut on the shaft is tightened to the proper torque spec. There are two thrust washer designs that achieve this. One is just flat on the side that contacts the propeller that makes it impossible for the boat prop to wobble once the prop nut is tight. The other design has a smaller diameter protruding inner shoulder to it that tucks inside the front of the prop that also centers and secures the front of the boat propeller.

You must use the correct thrust washer for your prop shaft to insure the propeller will be inside the lower unit housing at the proper depth so the exhaust gases will only exit out the center of the propeller instead of out over the propeller blades which would cause a huge loss of performance.

When changing out boat propellers make sure the thrust washer is on the prop shaft before installing the replacement propeller and not stuck inside the front of the prop you are taking off.

Pry it out of the old prop if it’s still in it and put it on the shaft. When changing boat props you should take the thrust washer off the shaft and check if there is any fishing line wrapped around the shaft that you sometimes you pick up while using your boat and remove this line. This fishing line can damage the rubber waterproof seal that the prop shaft goes through and that could lead to water entering the lower unit gear housing and contaminating the gear oil in the housing. If you suspect this has happened you can check it yourself by having the boat out of the water and let it sit overnight. Then just unscrew the gear oil drain plug on the gear housing just enough to see what comes out of the lower unit. Water is heavier than oil so it will drip out before any oil does. If pure oil comes out immediately then you are ok. If you have just a little water then oil coming out, secure the drain plug and run your boat a little bit then check for water again. If no water comes out the seal should be good but still check for water periodically. If water comes out, your propeller shaft seal needs to be replaced by a certified marine technician.

We sell boat props at great boat propeller discount prices on our website or please call us at 1-800-573-5533 to order by phone if you prefer to do that way.

Propane Powered Outboard Motors

Posted by on Dec 29, 2017 in Boat Propellers, Boating | 0 comments

Propane Powered Outboard Motors

You now have the option of using a propane powered outboard motors instead of a gasoline or electric motor. LEHR is the first company to mass produce outboards that use propane as the operating fuel. Their line of models are 2.5hp., 5hp., 9.9hp., 15hp. and a 25hp engine. The engines are similar to gas powered engines and the boat propellers they use are non-thru hub style props that are made out of aluminum only. The performance is comparable to gas engines.

The advantages of these motors compared to gasoline powered motors:

  • Propane burns up to fifty times cleaner than regular gasoline.
  • Engine starts are easier because the propane fuel canisters are pressurized.
  • There is no gasoline smell.
  • Ethanol that is a problem for gasoline engines is not in propane.
  • There is no lubricating oil that needs to be added.
  • Refueling is easier. You can just unscrew an empty canister and then screw in a full one.
  • This can take less than a minute.

The disadvantages of these propane powered outboard motors compared to gasoline powered motors:

  • There is a limited number of models available.
  • Propane engines are a little more expensive to purchase.
  • They are heavier than gas engines.
  • There are less service dealers around that you can take the engine in to for repairs.
  • No engine no matter what is used as fuel is perfect but you do have choices on what kind is best for you.

Please check out the boat propellers we offer on our website or you can call us at 1-800-573-5533

Boat Propellers for Different Boat Hull Designs

Posted by on Dec 18, 2017 in Aluminum Propellers, Boat Propellers, Stainless Steel Boat Propellers | 0 comments

Boat Propellers for Different Boat Hull Designs

Most boat hull designs perform well enough with an average aluminum propeller but a lot of hull designs work best with either a three or four blade boat prop with stern lifting or bow lifting capabilities made from aluminum or stainless steel.

For boats with an outboard motor or a sterndrive sometimes using a bow lifting boat prop tends to make the front of the boat bounce up and down, that is known as porpoising. You can put more gear in the bow area or have a passenger or two sit up in the front. That can get rid of the bouncing or you need a three bladed stern lifting propeller which is offered mostly in a stainless steel boat prop. Four bladed aluminum propeller or stainless steel propeller reduce bouncing also because most of these are stern lifting props. Installing trim tabs will can control the porpoising  they cost considerably more than propellers do.

For high speed bass boats you have to go with performance designed stainless steel props to achieve the highest speeds and the best takeoffs. If your bass boat bounces from side to side at high speeds that is called chine walking and that can be a scary ride and even dangerous. Usually three bladed boat propellers cause chine walking but using a four bladed propeller will greatly lessen that effect.

Inboard ski boats use three or four bladed props and have a fixed drive system with no trim adjustments that can be made so they are designed to perform the best for all operating conditions just the way they come from the manufacturer.

We have most types of boat propellers at great discounted prices that you can order online on our discount aluminum propeller website or by phone by calling us at 1-800-573-5533.

Boat Propellers for Different Boat Hull Designs

Posted by on Dec 4, 2017 in Aluminum Propellers, Boat Propellers, Stainless Steel Boat Propellers | 0 comments

Boat Propellers for Different Boat Hull Designs

Most boat hull designs perform well enough with an average aluminum propeller but a lot of hull designs work best with either a three or four blade boat prop with stern lifting or bow lifting capabilities made from aluminum or stainless steel.

For boats with an outboard motor or a sterndrive sometimes using a bow lifting boat prop tends to make the front of the boat bounce up and down, that is known as porpoising. You can put more gear in the bow area or have a passenger or two sit up in the front. That can get rid of the bouncing or you need a three bladed stern lifting propeller which is offered mostly in a stainless steel boat prop. Four bladed aluminum or stainless steel propellers reduce bouncing also because most of these are stern lifting props. Installing trim tabs will can control the porpoising  they cost considerably more than propellers do.

For high speed bass boats you have to go with performance designed stainless steel props to achieve the highest speeds and the best takeoffs. If your bass boat bounces from side to side at high speeds that is called chine walking and that can be a scary ride and even dangerous. Usually three bladed boat propellers cause chine walking but using a four bladed propeller will greatly lessen that effect.

Inboard ski boats use three or four bladed props and have a fixed drive system with no trim adjustments that can be made so they are designed to perform the best for all operating conditions just the way they come from the manufacturer.

We have most types of boat propellers at great discounted prices that you can order online on DansDiscountProps.com or by phone by calling us at 1-800-573-5533.

Underwater Hits on Boat Props

Posted by on Nov 27, 2017 in Boat Propellers | 0 comments

Underwater Hits on Boat Props

If you own a boat with an outboard motor or sterndrive and hit something underwater with your lower unit and boat props a wide range of damage can occur. It also depends on what the propeller is made out of as to how much damage you have.

Boat props made of a composite material should not cause any damage the lower unit or prop shaft. They have solid hubs that break away from the shaft and go sink to the bottom or the blades will fray or break away saving you from lower unit damage. Composite propellers are not repairable.

Aluminum boat props even though they are a harder material than the composites, they also should not cause any other damage to your drive system if you hit something. The blades on the aluminum props will give way and the hubs might spin but the propeller will stay on the prop shaft. Aluminum propellers are repairable, they can be welded on and reshaped to original size and the hubs can be replaced.

With Stainless steel propellers you need to be more careful. You might possibly damage your lower unit and propeller shaft if you hit something because stainless steel boat propellers are about five to seven times stronger than aluminum boat props so there is very little give to them. The most common damage you might have is a bent propeller shaft. That could be expensive to fix. The hubs in these props should spin on impact and save you from a major repair but not every the time. They can be welded on and repaired and the hub can be replaced.

The good news is there is an easy way to avoid any damage at all. Just don’t hit anything. If you need to replace your boat prop please check out the low priced boat propellers on our website or call us at 1-800-573-5533