transom saver/engine support ....to use or not to use

Kris.J

Seaman
Joined
Aug 8, 2012
Messages
66
Re: transom saver/engine support ....to use or not to use

Oooh you just gave me an idea Poot - make a transom saver out of an automotive shock absorber! :D
 

lncoop

Vice Admiral
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Apr 18, 2010
Messages
5,147
Re: transom saver/engine support ....to use or not to use

By using a transon saver,could you also say,every bump you hit will put a jolt to your lower unit?
I mean I know there tuff but so are good transoms and proper trailers.
I think myth busters or some independent engineer should do a study on this.
Just everyday use of a outboard puts alot of stress on a transom,is trailering it with a proper trailer that much more stress?
I have read some boat builders take it as a slap in the face if you suggest a transom saver...

I've never understood that comparison. I don't know if trailering causes more stress, but it definitely causes a different kind of stress that is much more directly applied to the transom. When was the last time you were boating and the stern of your boat bounced up and down repeatedly for hours causing the transom to take the entire stress of the repetitive up and down motion with nothing to absorb the shock? Never, but that's what happens when trailering. To each his own, but next time you're behind a big boat (I'm not talking about john boats) being towed without a transom saver watch the transom and compare/contrast that to the reaction of the transom of a boat on the water underway, even at WOT. There is absolutely no comparison. As for stress on the lower unit; I'm sure some is transferred to it, but a lower unit is not a structural item and wouldn't be affected the same way. In any case, I know if I had to choose between a LU and a transom...........;)
 

sccatfish

Petty Officer 2nd Class
Joined
May 29, 2009
Messages
147
Re: transom saver/engine support ....to use or not to use

Oooh you just gave me an idea Poot - make a transom saver out of an automotive shock absorber! :D

While they're not made with shock absorbers you'd put on a car, they do make some with a similar concept built in.
 

sccatfish

Petty Officer 2nd Class
Joined
May 29, 2009
Messages
147
Re: transom saver/engine support ....to use or not to use

By using a transon saver,could you also say,every bump you hit will put a jolt to your lower unit?
I mean I know there tuff but so are good transoms and proper trailers.
I think myth busters or some independent engineer should do a study on this.
Just everyday use of a outboard puts alot of stress on a transom,is trailering it with a proper trailer that much more stress?
I have read some boat builders take it as a slap in the face if you suggest a transom saver...

Not all of the force will be on the lower unit/transom saver/trailer. It's just taking some of force off of the transom/mount/tilt system. Plus think about the leverage. The transom/mount/tilt system is at the pivot point and has full effect of the leverage of the motor, so it has a lot of force there as the motor tries to bounce. Supporting the motor near the end of the lever (at the lower unit) will take a large amount of that force away from the pivot without putting a lot force on the lower unit.
 

Home Cookin'

Fleet Admiral
Joined
May 26, 2009
Messages
9,715
Re: transom saver/engine support ....to use or not to use

I do not believe they are necessary, much less effective, for normal trailering, on a boat in good condition.

If your transom needs saving, you have larger problems.

We know of no instances where the tilt bracket (in good condition) broke or failed.

The primary weight on the transom is virtually the same--straight down on the bracket.

The boat and motor move as one on the road; the trailer can move independently. By directing the movement of the motor to the trailer, you are creating a stress (resistance) which wasn't there before. This could affect the part of the bracket where the motor is attached.

Is a trailer cross-bar made for the weight and stress of a lower unit directed to it?

A rope can tie a motor from moving side to side. It can also hold it tight againt a tilt bracket.

the fact that the owner's manual says not to trailer on the tilt bracket does not mean it is not safe to do so. They are notoriously over-cautious about things like that due to potential liability (in case the owner doesn't set it right). They also say to disconnect the spark plugs, remove the key and kill switch lanyard AND cut off the battery before removing the prop--anyone do that?

At most I might reinforce the tilt bracket by lowering the motor on to a block of wood placed up in there.

For a tilt bracket to come undone, the motor has to rise a good inch or so and something has to move the latch against its spring. Short of gremlins, not likely. If you've hit something that hard, you need a lot more saving going on than the transom.

Most motors large enough to bounce free of the bracket and slam back down are retarded by the PTT system. A smaller motor that doesn't have PTT also doesn't have the weight to do any harm to the bracket, or boat.

Cars travelling behind you don't like it when they fall off.
 

Maclin

Admiral
Joined
May 27, 2007
Messages
6,761
Re: transom saver/engine support ....to use or not to use

I used a stiff-leg on a manual tilt O/B just to save the tilt-up latch, it just seemed to me there was lots of leverage on that latch going down the road. The device attached to the rear roller bracket on the trailer, and connected just above the lower unit plate with a vee rubber mount and a bunjee. It may have been called a transom saver but for me it was a way to keep the stress off the tilt latch. I had been thinking about getting one and on the next trip the engine was down when I got home, surprise. I put it on before the next trip.
 

krakatoa

Senior Chief Petty Officer
Joined
Aug 8, 2008
Messages
705
Re: transom saver/engine support ....to use or not to use

The tilt lock isn't designed to handle the weight of the motor bouncing down the road. The transom saver does just that, it transfers that weight off of the transom and onto the trailer.


Right! I use mine all time when trailering.
 

etracer68

Ensign
Joined
Oct 11, 2009
Messages
906
Re: transom saver/engine support ....to use or not to use

If the motor has power tilt and trim, the trailering latch will hold the motor from doing any damage to trim/tilt unit. Motors that dont have PTT, it can bounce off the lock, and come down. When I had a 25hp Johnny, no PTT, I used a deflopatizer, with my 90hp with PTT, I just use the latch. Although I do see that a transom saver would take abit of the stress from bouncing off the transom.
 

Silvertip

Supreme Mariner
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Sep 22, 2003
Messages
28,771
Re: transom saver/engine support ....to use or not to use

There seems to be a misconception about what and how a transom saver is for. It does two things. 1) It keeps the motor from flopping around. And whoever said "even though the manufacturer says not to use the tilt lock when trailering doesn't mean its not safe to do so" is taking a statement to extremes. Try that in a warranty situation and you will find out in a hurry just how serious they were when they made recommended not doing so. 2) The transom saver "ties" the entire boat, motor, and trailer" together as those they were one, welded together unit. Therefore any movement of the trailer as it is going down the road is using the trailer springs and tires as a shock absorber and the length of the engine hanging over the transom is not imposing any forces whatsoever on the transom. The tilt lock provides no protection from those forces. Fact is, if one always travels on very smooth roads a transom saver is not necessary -- but then all it takes is one short section of very rough road and things can change in a hurry. They are just one more tool to protect a very expensive investment. whether or not you agree or disagree with their value is up to you. Like any tool, used incorrectly they can themselves cause damage. Used properly they help prevent "potential" damage. I have seen broken tilt locks but those have almost always been on engines without power tilt&trim and was due to the violent, unrestricted upward movement followed by the sudden drop. Even a small motor flopping like that can damage a transom as well as the motor itself.
 

Georgesalmon

Lieutenant Commander
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Re: transom saver/engine support ....to use or not to use

What he said (Silvertip)
 

mommicked

Lieutenant Commander
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Dec 15, 2009
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Re: transom saver/engine support ....to use or not to use

no it was a dumber move than that even

i set it on the back of the boat partially hanging over, you know so i would notice it and toss it in the truck after i put the plug in. i remembered about it just as i was punching the boat up on plane, turned looked back just in time to see it slide overboard.

i blame my 6yr old interupting my process with a question.

I would never leave my deflopperizer on the back of the boat because I was in a hurry to get on the water. Besides, I needed a new one anyway :facepalm:...................It is fun to fab a temporary one out of ratchet straps to get home also.
 

dmoriarty51

Petty Officer 1st Class
Joined
May 4, 2010
Messages
305
Re: transom saver/engine support ....to use or not to use

I would never leave my deflopperizer on the back of the boat because I was in a hurry to get on the water. Besides, I needed a new one anyway :facepalm:...................It is fun to fab a temporary one out of ratchet straps to get home also.

good to know im not alone, im gonna go fit my new deflopperizer and hit the water here shortly. if i lose another one im selling the outboard and getting an IO :facepalm:
 

pootnic

Chief Petty Officer
Joined
Aug 11, 2007
Messages
447
Re: transom saver/engine support ....to use or not to use

If the trailers springs,tires are absorbing the shocks(mentioned above) and your boat is attached properly to the trailer,wheres the extra stress to the transom coming from(if outboard is held in place).Seems like the trailer and boat should already be one(mentioned already).
I still think myth busters should do a show on it.
To many people have there opinions(and argue for them) and I'm not sure how many know for sure their right...including myself.
 

mommicked

Lieutenant Commander
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Messages
1,700
Re: transom saver/engine support ....to use or not to use

good to know im not alone, im gonna go fit my new deflopperizer and hit the water here shortly. if i lose another one im selling the outboard and getting an IO :facepalm:

I heard a little "clank" noise behind me as I went to plane and looked back seeing nothing but stern and wake behind my 18' jon w front and rear decks. Then I wondered "did I stow the defloperizer?" I pondered it while I fished and sure enough, when I returned to my truck there were my saftystraps on the floorboard.................but no defloperizer :facepalm: the one I lost had the 4 rubber pads that needed replacing soon, but I found out it was twice+ as expensive as the one I replaced it with from wallyworld and worth the xtra $$. the new one is OK but not as good as the old one I probably could have gotten replacement pads for for cheap :facepalm: Maybe i'll attach a float to mine incase I never leave it on the stern again!
 

T_Herrod

Petty Officer 1st Class
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Apr 1, 2012
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Re: transom saver/engine support ....to use or not to use

maybe im odd i use mine so i can tow with the motor only half tilted. when on the tilt lock its at a high angle on the saver the prop is just a little higher than the bottom of the boat. i realy dont like tilting a carbed motor to far even if its designed to do it
 

lncoop

Vice Admiral
Joined
Apr 18, 2010
Messages
5,147
Re: transom saver/engine support ....to use or not to use

If the trailers springs,tires are absorbing the shocks(mentioned above) and your boat is attached properly to the trailer,wheres the extra stress to the transom coming from(if outboard is held in place).Seems like the trailer and boat should already be one(mentioned already).
I still think myth busters should do a show on it.
To many people have there opinions(and argue for them) and I'm not sure how many know for sure their right...including myself.

Like I said the other day, to each his own. I'm not a physicist, or engineer, or whatever one would need to be, so as you said, my opinion is just that. I only know what I've personally witnessed, and that is that a transom with a heavy motor that isn't supported by a MD flexes A LOT when the boat is being trailered. That is not my opinion. That is a fact. I've seen it with my own two eyes on a brand new rig. Pretty sure that guy's transom doesn't have bigger problems and doesn't need saving in the misinterpretation of the term in this context. Even the admiral, who doesn't know what a transom is, has commented on seeing it. Seeing is believing, which is why I am no longer on the fence.
 

robert graham

Admiral
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Apr 16, 2009
Messages
6,908
Re: transom saver/engine support ....to use or not to use

Transom Savers seems to be just another endlessly debatable subject, right up there with Outboard Oils and Greases....that said, I'll continue to use mine, but more to keep the motor from moving(flopping) around than to protect my transom. Just wondering, what kinda grease do you guys like?:p;)
 

jondavies

Petty Officer 2nd Class
Joined
Jan 17, 2010
Messages
178
Re: transom saver/engine support ....to use or not to use

If the trailers springs,tires are absorbing the shocks(mentioned above) and your boat is attached properly to the trailer,wheres the extra stress to the transom coming from(if outboard is held in place).Seems like the trailer and boat should already be one(mentioned already).
I still think myth busters should do a show on it.
To many people have there opinions(and argue for them) and I'm not sure how many know for sure their right...including myself.

I think about it this way ... if my motor is tilted up and I hang a 200lb weight from the propeller, where is that force going to go? Now, if I have a support between the lower unit and the trailer, where is most of that force going to go?

(Note, 200lbs is an arbitrary figure -- the actual force exerted on the transom depends on the weight of the motor, length of the leg, speed of the vehicle and roughness of the road etc.)
 

pootnic

Chief Petty Officer
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Aug 11, 2007
Messages
447
Re: transom saver/engine support ....to use or not to use

I think about it this way ... if my motor is tilted up and I hang a 200lb weight from the propeller, where is that force going to go? Now, if I have a support between the lower unit and the trailer, where is most of that force going to go?

(Note, 200lbs is an arbitrary figure -- the actual force exerted on the transom depends on the weight of the motor, length of the leg, speed of the vehicle and roughness of the road etc.)
Wasn't going to answer....
Let me see...ummm,transom,then maybe bunks,hopefully some sort of springs,then tires.Boat and trailer should be one and if your travel down long rough roads at high speeds,you have more problems then needing a transom saver.
Either way your little example still doesn't prove or disprove whether or not the transom can/cannot handle it.(arbitrarily:))
 
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