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Tie_1_On

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Posts: 119
Reply with quote  #1 
Does anyone know if a Enertia prop will fit on. 2016 115 HO Etec? I’d like to demo one but not sure if splines will match up.

Oh and one more quick question. Let’s say you run out of gas for your Etec (Not that it will ever happen to me 😃). Is it just a matter of pouring gas in the tank and starting her up again! I remember with carb engines that sometimes it helps to pour a few drops of gasoline in the carb intakes to get her going, squeezing the primer bulb wasn’t enough and could drain the batt before it started. What’s the deal with fuel injection?



Thanks!

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2016 Etec 115 HP HO  A115SHLAFH  S/N = 05475255
jimh

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Reply with quote  #2 
Quote:
Does anyone know if a Inertia prop will fit on. 2016 115 HO Etec?...not sure if the splines will match up...


You probably intended to refer to a Mercury ENERTIA propeller. I think you really want to know if a Mercury ENERTIA propeller will fit on your Evinrude E-TEC, rather than to find out how many people know if it will fit.

There are no "splines" on Mercury propellers. They use a large square hub into which an resilient plastic coupling is inserted. Into the resilient plastic coupling a metal coupling is inserted which has internal splines to fit the propeller shaft and external splines to fit the plastic coupling.

Mercury calls their system FLO-TORQ hubs, and it permits their propellers to be adapted for use on engines made by other manufacturers. Just about any Mercury propeller with a FLO-TORQ hub can be adapted to fit on an E-TEC. The adaptation is done by buying the proper FLO-TORQ-II adaptor kit for a particular engine.

Of course, you must be certain the propeller blades can rotate in the propeller aperture on your E-TEC. There is no way to adapt for an interference fit if the propeller blades are too large.

I have been using a Mercury propeller with a FLO-TORQ hub and adaptor kit for Evinrude on my E-TEC for many years. (It is a MIRAGEplus, which is similar to a REBEL.)

If you are interested in learning more about Mercury FLO-TORQ adaptors, I suggest you read an article I wrote about them in 2007:

FLO-TORQ ADAPTORS
http://continuouswave.com/ubb/Forum4/HTML/005155.html

The above article discusses the newer and more advanced FLO-TORQ III and IV adaptors, but it also mentions the FLO-TORQ II adaptor. As far as I know, for adaptation to Evinrude, you will have to use a FLO-TORQ II adaptor.

Also, the ENERTIA propeller was developed by Mercury SPECIFICALLY for use with their VERADO FOURSTROKE engine in order to enhance the fuel economy of the engine and produce higher top speeds. The propeller was optimized to run behind the gear case of the VERADO and to suit the VERADO engine torque curve. 

When the ENERTIA propeller was used with VERADO engines it produced an improvement in maximum boat speed and an improvement in fuel economy, particularly with the first generation VERADO engines which were somewhat notorious for their poor fuel economy. This was quite a surprising outcome: to get both more speed and more fuel economy was particularly impressive.

The notion that the ENERTIA propeller will produce a similar improvement when installed on engines other than the VERADO is somewhat speculative. Other engines have different designs for their gear case and have different torque curves. 

I do not recall any actual first-hand reports from any E-TEC owners who have tested an ENERTIA propeller and found it was anything special or produced a miraculous outcome.

I do recall a first-hand report from very experienced boater with extensive propeller testing experience who reported that in testing the ENERTIA propeller on his boat that was not powered by VERADO engines, the outcome was reduced fuel economy, which was the complete opposite of the claimed advantage supposed to be provided.

The ENERTIA propeller was formed by using a newly developed alloy of stainless steel, which Mercury called "X7". The X7 alloy was initially described in Mercury literature as being patented, but later there was no evidence of a patent and that claim was dropped from the literature and the claim was altered to use the term proprietary alloy. The X7 alloy was claimed to be simultaneously lighter and stronger than other alloys of stainless steel, and certain percentage of improvements were cited in Mercury literature about the margin of difference between X7 and mere ordinary stainless steel as used in making propellers, including Mercury's own propellers not made with X7. An additional claim for X7 was its ability to tolerate flexing under load.

The ENERTIA was said to be advantageously made with X7 because the thickness of the blades could be reduced due to the properties of X7. And they would flex.

To borrow from Jonathan Swift, I think you can say

"..there is a society of men among us, bred up from their youth in the art of proving, by words multiplied for the purpose, that Mercury propellers are better than all other propellers."

But I don't think that only Mercury propellers can work well, particularly with E-TEC engines. The only reason I am using one is I happened to already own it when I bought my E-TEC, and it worked well for me. A REBEL worked better in testing, but it did not work so much better that I felt it was $650 better than the propeller I already had. 

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EV-Diagnostic cables are back in stock.

jimh

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Posts: 6,384
Reply with quote  #3 
I can't offer any first-hand advice about running out of fuel with my E-TEC. I have never done it.

But all E-TEC engines must been started at some point without any fuel already in their fuel system--probably at the factory when they are tested after being assembled. I have faith that miracle can be re-created when the engine is on the transom of my boat, should the need arise.

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Huey

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Reply with quote  #4 
If you have a L/S V4 the Merc Enertia prop will not suit. If X/L with the V6 O series gearcase it will fit with the correct hub adapter.
rickmcd53

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Posts: 2,492
Reply with quote  #5 
Tie, if you run out of gas, just add gas to the tank and pump the primer bulb 15 to 20 times, if you have an on board filter it may take a lot more to get fuel into the VST. This is most likely the only time you would ever need a primer bulb.
tictactug

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Posts: 113
Reply with quote  #6 
I have two enertia props sitting in the garage right now.

Will be water testing on Saturday and can report. I'm running a 150ho. Enertia s are a wide diameter prop. I don't know if they will fit a smaller engine.

I'm interested in seeing how they push my Worldcat compared to my vipers.

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Twin 150HOs
Models E150HGXAB
alandosky

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Posts: 13
Reply with quote  #7 
I have a 150 HP (2007 MY) pushing a 22' Sportcraft.  It is a polished stainless steel Enertia with a 13" pitch so I can get the RPM up.  BRP does not make a a polished stainless wheel of that pitch with that efficiency.  I have a reworked (by BBlades) 4 blade cyclone which would not allow the engine rpm to come up high enough.  On an earlier post I noted what happened when loading the engine @ 5300 RPM.  Anyway, replaced a rebel with an enertia of lower pitch.  Can get to 5800 rpm now.

On another note - I am incredible impressed with the out the box engine smoothness with the enertia wheel.  Was on a charter last summer, the operator had a new 200 HO G2 - both my son and I commented that coming on plane and running at speed had noticeable higher levels of vibration with his rebel prop. (24' worldcraft aluminum)

I would comment that with the new lower unit ratios (new on the G2) there will always be the need for optimum performance props.  In this light, my observation, BRP has some catching up to do to match other wheel manufactures.  BTW - prop design is usually contracted out, for ultimate performance you need to use a speed shop who specializes in wheel design / changes.

Just my experience and 2 cents.

      

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alandosky
surfishjoe

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Posts: 58
Reply with quote  #8 
I have a 200HO on an older 21’ Mako center console. Boat has bottom paint t top with enclosure and will hit 45mph with a light load. The original prop was a 18” pitch viper. The slip with the viper was very high and would only turn about 5400 with a light load. I then tried a 17” rebel which was a fantastic prop but the engine would only turn 5200 light. Ken at prop gods suggested 17” Q3 which is same prop as inertia. Slip came down compared to viper, hole shot improved, economy seems to better and I picked up a couple mph at cruise. I have my engine mounted higher than stock height do to reworked transom. Occasionally the prop blows out when it is super snotty in the ocean and I can only run at survival speed but I think that is do to the high mounting. Other than that I like the Q3. I am curious what a 15” Rebel would do that is a sweet prop really hooks up. Oh yeah, with the 17” Q3 it will hit 5700-5800 light and trimmed out. With 3 guys and fishing gear full tank livewells etc it will turn 5500. I uselessly cruise 4000rpm which is about 28 mph if I remember correctly. Talk to Ken at prop gods he is the man. I bought my prop from brainard propeller it was $450 shipped.
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1989 Mako 211 “Chaser”
2020 G2 225HO
ziemann

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Posts: 156
Reply with quote  #9 
Quote:
Originally Posted by surfishjoe
I bought my prop from brainard propeller it was $450 shipped.


Ricky at Brainerd Prop is who made the recommendation that I test the Enertia on my 135HO/ Lund Pro-V. I was very skeptical, but am very glad i did. It has been a great fit for my setup. 

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Model# E135HGXABG S/N 05433989
2014 Lund Pro-V 1775
Klotz Full Synthetic Outboard- TCW3 setting (don't even go there)
Mercury Marine Enertia 14-5/8 x 16 Pitch SS 3 blade prop (5700 RPM's WOT/ 46.2 MPH)
OMC Tech Series Gauges
Stupid people die first then they come back again as beer cans....
Fishboy4050

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Posts: 53
Reply with quote  #10 
Quote:
Originally Posted by tictactug
I have two enertia props sitting in the garage right now.

Will be water testing on Saturday and can report. I'm running a 150ho. Enertia s are a wide diameter prop. I don't know if they will fit a smaller engine.

I'm interested in seeing how they push my Worldcat compared to my vipers.


How did those inertia props perform on your etec ?
gary_y

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Posts: 4
Reply with quote  #11 
Regarding running out of gas: I was chastised on this board for allowing that to happen.  The gas is apparently used to cool things like the VST, and they may be damaged by overheating.
steelhead

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Posts: 4,087
Reply with quote  #12 
Can burn cylinders out when fuel pickup starts sucking too much air out of fuel tank. VST can't bleed off all the air, fed to injectors.
Lean mix in cylinders at high rpms
tictactug

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Posts: 113
Reply with quote  #13 
Quote:
Originally Posted by Fishboy4050


How did those inertia props perform on your etec ?


Vipers are for sale...been running the enertia since that post.

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Twin 150HOs
Models E150HGXAB
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