I don't have much up front, but the rear is pretty loaded down. http://www.stingrayhydrofoils.com/stingray-classic/. Park the trailer in a flat, clear area somewhere where you have space … It’s making your day boating a little less enjoyable. It sounds like you have way to much weight in the rear of the boat. » Porpoising problem. haywood04. It has always rode rough in the water, but now it's very bad. I’m curious why not a hydrofoil. I will also add that I was able to stay on plane at 10-12 mph which is awesome when battling 4-6 footers. Tip: Shop boat supplies such as: cleaning supplies, boat carpet, battery chargers and more at Bass Pro Shops. I guess it all depends on what you are hoping get in the end. First as mentioned the motor height. Minn Kota Are you adjusting the trim as you’re slowing down? Coating Options for Aluminum January 31, 2021; Marine Aluminum Alloys – What’s the Difference? There is a link on the home page to Bobs machine shop. Until I added the foil of course. Joined: Feb 2005 Posts: 857 Likes: 0, Points: 0, Legacy Rep: 10 Location: CT, USA May 17, 2010 at 9:48 pm #872553. If you would like I can offer you my 300 lb Mother in Law cheap...... :lol: :lol: :lol: The snow must be getting deep. In the quest for more speed, I added 4 more inches of setback, for a total of 10" including my jackplate. Living here on mille lacs, every now and then we have some big waves. Get it as soon as Fri, Apr 16. Thus the reason for me reaching out to the IDO guys for suggestions. Throughout the whole power range? I like this Starbrite Epoxy Putty Stick for several reasons. I don’t think it was changed until 2004. Porpoising has always been an issue since I bought it used 3 years ago and now it has gotten worse since the new kicker I believe is a little heavier than my old 9.9 big foot since it didn’t have power tilt ... it’s a free fix. My issues seem very similar to yours as I added a kicker to mine and it got worse. Crestliner boats are wildly popular in the freshwater world. There are a few different ones/brands look into them and see which one is best for your situation. rasmuss wrote: ↑ Sun Jun 23, 2019 8:37 pm Could there be an idea to use a some thing like epoxy or soldering to make a more "permanent" fix or will it just break apart? Do I need to install a foil? Re: How to get my boat to stop porpoising... Tilt/Trim more DOWN and/or move more weight forward. There are many more experts out there other than myself (which I’m not an expert in anyway) that can answer this for you. since you are having lower speed issues 4.4 out of 5 stars 4. New In-Depth Outdoors TV episodes return this Fall, Sundays at 8 a.m. on the Fox Sports North channel! Loose Rivets. Secondly, I love the amount of storage space the boat has for an 18ft boat. I might ask if it will clean aluminum wheels- then it is implied it will clean an aluminum boat- the degree of cleaning is not something I can reply about. Why is this such a common problem? Star Brite Epoxy Putty Stick. I did break my hydrofoil last season but I’m guessing it had something to do with the 30 mile ride in 4-6′ waves on superior. Biggill your boat may be a totally different story as it sounds like the hydrofoil did great things for you and I’ve read its done the same for others. Maybe try a Rev 4 21 pitch, should help carry the load a little better and give you a bit better now lift. Guy know his stuff. The motor working harder at low trim is a good indication it is too low. Riptide Terrova 80 Trolling Motor w/i-Pilot & Bluetooth, Marine Electrical Panels Basically, porpoising is the word used to describe a bouncing boat -- when the boat is bouncing from hull or trim combination's and not the water. How to stop your boat from porpoising. Aluminum brazing is a step below aluminum welding, and anyone can do it. One customer wanted an 18 foot boat capable of 65 mph so he provided a fire breathing V8 and we built the hull the standard way. tackle, anchors, You’re on the water, the throttle is opened up….but you can’t keep the bow from bouncing around. There are a lot of Ranger pros who watch that Boat / Motor forum. The old boat was crushed,, so the dealer gave me the trolling motor, bilge pump, fish finder,livewell pump,, heck, even the … I installed the stingray classic hydrofoil on my boat last year and it solved the problem. I agree with everyone on the weight adjustment but I’m my case I was very limited to what I could move and when I added an anchor or two to the anchor compartment in the bow, it didn’t help anyway. You need to start your trim down before pulling back on the throttle. My buddy's 18 foot Mako CC has a bad porpoising problem when accelerating around 25-30 mph. You may get some other options. This got rid of the remaining porpoising in all but the roughest water. The back end is loaded with gear and I have not had any issues with porpoising. Less rake effectively creates stern lift. My boat has gas tank and big livewell up front. Save more with Subscribe & Save. Fix that problem with less weight up front and trim. I recommend it. You may not want to do too much tweaking. On test day we ran the boat up to about 50 mph and the porpoising was so bad we had to shut it down and rethink our position. Then just bending it slightly until the porpoising stops. As the motor is trimmed back, more and more of the boat comes out of the water. You have to clean away the paint with a wire wheel or sandpaper the area first. My 16ft Monark modified-V aluminum boat has a BAD problem with wanting to bounce out of the water even if the water is smooth. Very interesting topic. By no means am I knocking Rangers, as I think its a simple thing but I just haven’t figured it out yet. For me, losing a few mph on the top end doesn’t bother me a bit. IDO Porpoising is the result of the motor’s outdrive pushing the boat upwards, essentially boosting it out of the water – albeit for a short period of time. I actually don’t trim down when I back off the throttle until it starts porpoising. Should I be able to manually push the actuators down like a shock on a car? Slow your boat down. I got a new prop from Croxton props (google them) and the problem was solved. My gas tank is up front and I believe yours is the same. It porpoises really bad even with a balance of passengers weight evenly distributed on the boat. Any help would be appreciated. b-robinson. Park your boat on its trailer on a flat surface outside. Once the boat comes back down, the outdrive will once again push it back out of the water. 1-16 of 541 results for "aluminum boat repair epoxy" Price and other details may vary based on size and color. Thanks for letting me know. I put one on my 2025 prov and it has allowed me to keep the bow higher at lower rpm’s in big waves. (30 mph) Backing the throttle off will stop the porpoising. Heres how you can easily fix your aluminum boat holes and leaking rivets. I also had a mechanic install my motor low once too after he redid my transsom, took two trips to figure out what changed. Winona, Minnesota. Yup, try trimming it in/down and see if that helps. I have been reading some older posts here and haven’t been able to figure out a solution to my problem so I’m looking for suggestions. You need to get the bow down! http://www.stingrayhydrofoils.com/stingray-stealth/. How to replace rivets and repair holes in an aluminum boat. One easy fix on a aluminum boat. weight redistribution would be free, Matt Wodziak. Less rake means less resistance which means more of the motor’s torque is used as forward thrust. Trim the motor down until the boat stops bouncing. For a better experience, please enable JavaScript in your browser before proceeding. Participant. Is it better if you have someone with and they sit in front or fill the front live well? try moving all the weight you can from the rear to the front of the boat. for top end speed you do want the weight in the back, I do have small livewell, 2 batteries, main and kicker in back. GPS Chartplotter and Fish Finder Combo. You then paint over the bare aluminum with self etching spray primer from Napa Auto and then paint to match your boat color. Rake, not pitch, affects how much bite the prop is able to hold while trimmed up. What it does give you is a hell of a lot of bow lift when you need to crush 4 footers for 10 mile runs! I want to upgrade from a 2025 pro-v to a ranger eventually. & Circuit I remember that boat pounding the snot out of you if there was a chop. I have a 2001 Ranger 619vs with Merc Optimax 200 We can build and install flotation pods, outboard gill brackets, custom hatches and … On the rear transome you will see a lip from the bottom going across where the transom is welded onto the bottom, it will protrude about 1/2 inch back. If I back off the throttle without adjusting the trim, the front end will bounce quite a bit. Good luck and let me know if you have any questions. I really wanted improved hole shot, improved low speed control in big waves and to stop the damn porposing. My boat seems to like the weight more to the rear. I'm having problem porpoising out of the water at low speeds. I purchased a 2000 G3 boat,, which the hull cracked due to not enough stringers on the hull. Discussion in 'Boat Design' started by ferrazz, Jun 6, 2005. It is like a lump … A friend of mine had a 619, it was around a 2005, give or take a few years on either side. I am just wanting to be sure before I go cutting slots in a brand new boat. They are unique in that they have a welded aluminum hull as opposed to rivets. If you have a Facebook account, try looking up Ranger Pro Eric Olson. It may not display this or other websites correctly. I would like to better understand the phenomenon of porpoising in smallish (18’ – 24’) planning hulls. I think the 21P Tempest is a proven prop for that boat/motor. » Community The only drawback with a hydrofoil is that you have to drill some holes in the anti cavitation plate. They’re covered by a lifetime warranty which they honored in about 4 weeks. I think the Tempest gets into Merc’s medium to higher amounts of rake. central Neb. It's a jon boat so the hull is the same design. I agree with Munchy. The kicker seemed to be the culprit for me. 1997 chevy silverado 5.7 vortec engine??? A common problem affecting aluminum boats are leaks. I just have a bait well upfront and never tried filling that My understanding is that porpoising is the result of a boat’s COG being too far aft and/or the wetted surface not being large enough to support the weight of the boat on plane. I’d bet I’ve lost some mpg too but I bet I gained it all back and then some in rough seas. Also I am suppose to remove the dorsal fin from the motor while I have these on, correct? Short of a jack plate what can I do to remedy this problem? New merc pro kicker 9.9 with power tilt & trim I would think Ranger would be able to tell you which prop should work best for that hull. You need to try one notch lower on your trim. I can say that when I do get it trimmed out right and its running good, the porpoising starts again once I slow down a bit or even more when I slow down even more coming into a spot or back to the landing. Posts: 3,907. What I meant was does your boat have a console with a steering wheel? I have a 1999 692VS w/ windshield and a 175 EFI propped with a 21p 4 blade tempest. the big guy next to you (to at least test the possibility). My boat is under powered and over weight. Unless you have a welder for aluminum, this is a fantastic fix. You must log in or register to reply here. The resolution to a porpoising problem with a hull design is most always addressed by causing the boat to run with less trim. again, it’s a free fix. Tried trimming the 90 Optimax motor every which way but still porpoises quite a bit. That feature was the first thing that caught my attention. Boat Porpoising, What best solution or product? Rake creates more resistance in the water. I considered this one but the reviews said the no-drill mount was not reliable and some people said it simply fell off. Collisions with underwater obstructions, beaching boats, and years of pounding waves are the likely causes of loose or missing rivets, widening of seams, and hairline cracks and tears. There are a few plates available for this, but our local dealer suggested just a couple inch wide flat piece of aluminum mounted to the transom on each side. Maybe just a learning curve, I don’t know. I learned this trying to diagnose a tin boat where I found less rake, a Vengeance prop of the same pitch, reduced the amount of bow lift, effectively raising the stern, removed the porpoising, better planning, and kept the same top speed. My boat is a 2003 20 foot Starcraft Deckboat with a Suzuki DF140 powering it. Luckily, this won’t be the case anymore if you invest in this product. Tow your boat out of the water if it isn’t already on the trailer. It could be a motor height issue, of course, but if it’s the prop I’d recommend Croxton. $26.44 $ 26. At a certain RPM? Porpoising begins as you motor picks up speed and raises your boat's hull from the water, reducing the amount of hull in the water -- which means there's too little hull in the water to support the boat. Get it as soon as Thu, Apr 22. As we built out of aluminum all of our hulls from 18 to 24 feet came off the same jig. It will plane sooner and will cut the waves with the bow instead of slamming the bottom into them. I normally have had to always run the boat 3/4 – full down on the tilt to eliminate the porpoising.This happens even when the rear live well is empty.For whatever this is worth, I can say that when I do get it trimmed out right and its running good, the porpoising starts again once I slow down a bit or even more when I slow down even more coming into a spot or back to the landing. Participant. You might find that a prop with less rake may work better. » Forums On flat smooth water it has a tendency to start a slow porpoise at WOT. I’ve always owned aluminum boats previously and didn’t have to play with the trim as much as I do now since I own a fiberglass boat. Admit it or not, to some boat owners, hunting for the most suitable aluminum boat sealer for them can be quite challenging. I was given a new boat, the only thing that was re-used from the first was the outboard.. Many times when porpoising is not able to be fixed from trimming and weight balance adjustment, it is caused by the motor being mounted too high or low, usually low. Any years and models that don’t have this trend? It sounds like your motor is mounted to low. Might consider adding a jack plate while you’re moving the motor around…. West System 650-K Aluminum Boat Repair Kit. Just for comparison, here’s my boat. I talked to a couple of Ranger dealers today and it sounded like my prop is the right one, my motor height is correct, weight distribution is pretty good. There is … Then just bending it slightly until the porpoising stops. The engine builder is adamant that 2 6" sections bent just an 1/16" will do wonders, but it could take as much as 3/16" to stop the porpoising. Since then I've put on a 60hp with power tilt, but it doesn't have trim. May be just the nature of your particular set up. I have driven a lot of Rangers and this is pretty common. I have no clue to the situation, but it’s fairly common for reps to protect the image of their companies. What is the water depth at the judson landing on the Minnesota river . Boat Gel Coat - Spectrum Color, Boat Topics and Questions (not engine topics). With four batteries two of them need to be in the front or I’d have the same problem. I usually have the other person riding in the seat next/across from me at the console. $37.75 $ 37. I am hesitant to make those cuts because I have read where it makes push poling the boat backwards a bit of a pain. More trim equals more bow lift. Fryin’ Saucer – are they still in business? You start having rangers show up to tourneys with hydrofoils or other stuff to fix an issue with their boat that reflects poorly on them. Home Boat Design Forums > Design > Boat Design > Need help with new boat porpoising problem. This can have several causes. Although the final answer may be a different prop, Thats the thing about different boats. His has since upgraded to a 621 and that boat rides a little better. FREE Shipping by Amazon. Therefore, less rake can sometimes allow the boat to go just as fast with less trim due to the efficiency gained. 4.5 out of 5 stars 468. Shop These cut out 80% of the porpoising. Page 2 of 2 < Prev 1 2. Not a perfect comparison, but i was running a tempest on my 681 and porpoising was an issue at anything other than WOT. It seems crazy to spend that kind of money on a boat and have to trim this down, that up, while on plane do this or that. » Fishing Forums There are a few plates available for this, but our local dealer suggested just a couple inch wide flat piece of aluminum mounted to the transom on each side. January 19, 2021; Corrosion from Carpeted Trailer Bunks January 15, 2021; How to fix porpoising on small boats January 14, 2021; Payment Methods As with all brands, they have had their issues over the years, but Crestliner has responded by improving their designs and practices when problems arise. Do I need to run a different prop/pitch? It allows the driver to add more trim. 1-16 of over 1,000 results for "aluminum boat repair kit" Price and other details may vary based on size and color. Passenger, battery, two 6ga tanks, and the motor. Secondly the rake on the prop. Effectively what is happening is as follows: The boat comes up on plane and begans to accelerate. January 30, 2021; ABYC – American Boat and Yacht Council: What does it mean for boaters? This sealant is ideal for beginners as it is smooth sailing to use, all you need to do is to gingerly pour it, stir and then ap… 2 batteries are on the starboard rear and one is on the port rear I find I’m generally clueless when it comes to prop talk so count me out on contributing on that front. If you wind up blue in the face with trim and weight management then make a small flat fin out of 3/16 sheet aluminum. Smaller aluminum boats are riveted together with a sealant between the two panels of … They both said no to a hydrofoil and no to changing the prop. You are using an out of date browser. I would suggest a hydrofoil of some type. Two things to look into. 44. Hy-Poxy H-450 Alumbond 6.5 oz Aluminum Putty Repair Kit. Does a professional job. Re: How to get my boat to stop porpoising... Tilt/Trim more DOWN and/or move more weight forward. I’d like to know for my own benefit. If you raise the motor you will probably lose that ability to get that bow up at slower speeds. I now remember my neighbor had a Alumacraft that he carried almost all his extra gear up front. This is the one I went with after some research. When running WOT I have the motor trimmed up almost to the point it sprays water like a jet ski. When is your boat proposing? (30 mph) Backing the throttle off will stop the porpoising. I’m always playing with with the trim to make adjustments and its getting frustrating and the motor sounds like its working harder when trimmed all the way down. I know that trim tabs are the right solution but I wasn’t in the mood for another $1000. JavaScript is disabled. Good question basseyes. You can also make your own anti-cavitation plate out of sheet aluminum. 75. Very cheap fix and you won’t be disappointed!! This cycle will continue to repeat until either the boat’s speed is reduced or the trim is fixed. I often wonder why people just don’t toss a big counter weight in the bow to balance the boat better, especially the bigger rigs that could handle a 50-85# chunk of steel in the bow. Boat Design Net. You must be logged in to reply to this topic. Advice needed on mounting temp speed sensor on Lund alaskan. Not much different in specs from your ’01 619. If so which one? ...I've tried it tilted at various locations and nothing helps. Thanks Darryle A Jon boat that is too aft heavy may be due to having the wrong sized outboard motor fitted to the boat. Boat Repairs & Modifications We can at extra features to your existing boat or repair cracks and damage to your aluminum hull, trailer, outboard lower unit and skeg. You need that fairly quick punch occasionally so you are not constantly spearing waves. Breakers, Boston Whaler, 1972-1993, the first thing i would try is moving some weight forward. I added the whale tail to this motor too. I’m not a prop snob either so I couldn’t comment whether or not it would do any good. That’s why I thought it would cure my issue but the Ranger guys said no, so I’m stuck thinking its my operation of reading the boats’ reaction and reacting accordingly. A very common cause of porpoising on a Jon boat is bad weight distribution. If you take a big hammer, and go across this lip, rapping on it hard, it will bend down the lip slightly, don't worry you won't hurt anything. More rake equals more bite. Porpoising has always been an issue since I bought it used 3 years ago and now it has gotten worse since the new kicker I believe is a little heavier than my old 9.9 big foot since it didn’t have power tilt, I run a Tempest 21p prop If your Jon boat keeps porpoising when you increase your speed then your boat may be too heavy at the aft.