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  Rebel vs Enertia Eco up close

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Author Topic:   Rebel vs Enertia Eco up close
Teak Oil posted 04-28-2014 08:02 PM ET (US)   Profile for Teak Oil   Send Email to Teak Oil  
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.

jimh posted 04-30-2014 12:01 PM ET (US)     Profile for jimh  Send Email to jimh     
Very interesting observation!

Teak Oil posted 04-30-2014 08:23 PM ET (US)     Profile for Teak Oil  Send Email to Teak Oil     
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)     Profile for Hoosier  Send Email to Hoosier     
I just got this test report by email. 19500078_Enertia-ECO-Prop_2014

Teak Oil posted 05-07-2014 01:51 PM ET (US)     Profile for Teak Oil  Send Email to Teak Oil     
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)     Profile for prj  Send Email to prj     
What is the "torque tab" please?
prj posted 05-07-2014 04:18 PM ET (US)     Profile for prj  Send Email to prj     
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)     Profile for jimh  Send Email to jimh     
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)     Profile for Teak Oil  Send Email to Teak Oil     
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)     Profile for kitebuz  Send Email to kitebuz     
Did you grind the standard torque tab, or was it the flat one?
Teak Oil posted 05-20-2014 04:26 PM ET (US)     Profile for Teak Oil  Send Email to Teak Oil     
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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