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Author Topic:   Rebel vs Enertia Eco up close

Teak Oil posted 04-28-2014 08:02 PM ET (US)
Since the other thread on the Enertia Eco became rather lengthy, I decided to start a new one to show the up close differences between the two props.
The Rebel is a large prop, but the Eco is just huge. Other than a bit of cup at the tip the two props are very similar.
Here are some pics side by side, both of these props are 19" pitch.
http://img.photobucket.com/albums/v735/MontaukBob/phonepics434.jpg
http://img.photobucket.com/albums/v735/MontaukBob/phonepics430.jpg
http://img.photobucket.com/albums/v735/MontaukBob/phonepics431.jpg
jimh posted 04-30-2014 12:01 PM ET (US)
Very interesting observation!
Teak Oil posted 04-30-2014 08:23 PM ET (US)
I thought the most interesting part was that the blade rake stayed about the same until the last 1/4 or so of the blade, then it has a bit of cup and the rake increases dramatically.
Hoosier posted 05-07-2014 10:52 AM ET (US)
I just got this test report by email.
http://www.boattest.com/engine-review/Mercury/ 19500078_Enertia-ECO-Prop_2014
Teak Oil posted 05-07-2014 01:51 PM ET (US)
Yeah I have seen that test, and Mercury sends another test vs a rev4 with the prop.
If it doesn't thunderstorm tomorrow I will be out testing on Saginaw Bay. I had to do some significant grinding to the torque tab just to get the prop mounted.
If the diameter had been 16 1/16" there is no way this prop would ever work. Its huge
prj posted 05-07-2014 04:16 PM ET (US)
What is the "torque tab" please?
prj posted 05-07-2014 04:18 PM ET (US)
Ah, trim tab on the anode above the prop and beneath the ventilation plate! Figured it out from another article...
jimh posted 05-08-2014 02:02 AM ET (US)
Re the trim tab on the outboard engine under the anti-ventilation plate:
On the E-TEC engines I believe that the trim tab also functions as a water pickup.It sends water into the lower part of the exhaust passage to keep the gear case cooler. Use caution if you take a grinder to it.
Teak Oil posted 05-08-2014 01:36 PM ET (US)
Yes the water pickup which I believe cools the exhaust coming thru the hub is in the tip of the tab. There is a fair amount of grinding that can be done before getting to that.
It would definitely be more of an issue if I was going to need a higher pitched prop possibly
kitebuz posted 05-20-2014 03:37 PM ET (US)
Did you grind the standard torque tab, or was it the flat one?
Teak Oil posted 05-20-2014 04:26 PM ET (US)
It was the standard one.
Since this engine uses water from the torque tab to cool the exhaust I am not sure if you can run a flat tab on it.

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Author	Topic: Rebel vs Enertia Eco up close
Teak Oil	posted 04-28-2014 08:02 PM ET (US) Since the other thread on the Enertia Eco became rather lengthy, I decided to start a new one to show the up close differences between the two props. The Rebel is a large prop, but the Eco is just huge. Other than a bit of cup at the tip the two props are very similar. Here are some pics side by side, both of these props are 19" pitch. http://img.photobucket.com/albums/v735/MontaukBob/phonepics434.jpg http://img.photobucket.com/albums/v735/MontaukBob/phonepics430.jpg http://img.photobucket.com/albums/v735/MontaukBob/phonepics431.jpg
jimh	posted 04-30-2014 12:01 PM ET (US) Very interesting observation!
Teak Oil	posted 04-30-2014 08:23 PM ET (US) I thought the most interesting part was that the blade rake stayed about the same until the last 1/4 or so of the blade, then it has a bit of cup and the rake increases dramatically.
Hoosier	posted 05-07-2014 10:52 AM ET (US) I just got this test report by email. http://www.boattest.com/engine-review/Mercury/ 19500078_Enertia-ECO-Prop_2014
Teak Oil	posted 05-07-2014 01:51 PM ET (US) Yeah I have seen that test, and Mercury sends another test vs a rev4 with the prop. If it doesn't thunderstorm tomorrow I will be out testing on Saginaw Bay. I had to do some significant grinding to the torque tab just to get the prop mounted. If the diameter had been 16 1/16" there is no way this prop would ever work. Its huge
prj	posted 05-07-2014 04:16 PM ET (US) What is the "torque tab" please?
prj	posted 05-07-2014 04:18 PM ET (US) Ah, trim tab on the anode above the prop and beneath the ventilation plate! Figured it out from another article...
jimh	posted 05-08-2014 02:02 AM ET (US) Re the trim tab on the outboard engine under the anti-ventilation plate: On the E-TEC engines I believe that the trim tab also functions as a water pickup.It sends water into the lower part of the exhaust passage to keep the gear case cooler. Use caution if you take a grinder to it.
Teak Oil	posted 05-08-2014 01:36 PM ET (US) Yes the water pickup which I believe cools the exhaust coming thru the hub is in the tip of the tab. There is a fair amount of grinding that can be done before getting to that. It would definitely be more of an issue if I was going to need a higher pitched prop possibly
kitebuz	posted 05-20-2014 03:37 PM ET (US) Did you grind the standard torque tab, or was it the flat one?
Teak Oil	posted 05-20-2014 04:26 PM ET (US) It was the standard one. Since this engine uses water from the torque tab to cool the exhaust I am not sure if you can run a flat tab on it.