[rebel-builders] rotax + floats ( subject line changed to re

Walter Klatt · Post by **Walter Klatt** » Sun Feb 19, 2012 6:15 pm

Gross weight/useful load is the same with the 360 as with the 320. Weight
varies more with how you build it, panel, cabin, battery, gadgets, prop,
etc. I always advise everyone to build as light as possible. I have seen
empty weights for Rebels vary by up to 150 pounds with the same engine.

Mine came in at around 950 on wheels, and 1200 on floats.

Walter

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Tyler
Coleman
Sent: Saturday, March 27, 2010 1:58 PM
To: rebel-builders@dcsol.com
Subject: RE: [rebel-builders] rotax + floats ( subject line changed to
reflect content )

Walter,

Just A question about your gross weight and useful load. What is your gross
weight with the O-360 and how much useful load do you have?

Thanks Tyler

From: Walter.Klatt@shaw.ca
To: rebel-builders@dcsol.com
Subject: RE: [rebel-builders] rotax + floats ( subject line changed to

reflect content )

Date: Sat, 27 Mar 2010 07:15:38 -0700

Tyler, I am in BC (Langley) and used to run a 150 hp O-320 in my amphib
Rebel. Worked good up to about 3000 ft lakes. But higher than that, you
really extended your take-off runs, especially on a hot day. In fact on a
hot day, glassy water, heavy load, you probably wouldn't get off. And of
course, your climb rate is really down at higher altitudes on hot days.
Could be a real issue if you need to clear trees or a rise coming out of a
high elevation lake.

I now run an O-360 (only 8 pounds more than a 320) in my Rebel, and it

made

a huge difference in performance. Also, found that this engine has better
fuel consumption than my 320. That is probably due primarily to having EI

in

the new engine.

And for perspective, my old 320 Rebel was no slouch. Near sea level, I

could

be off the water in 10 seconds when lightly loaded, and less than 30

seconds

with a heavy load. It still out performed any Cessna floatplane.

But if you are talking about flying into small alpine lakes (which I

really

enjoy), that is a whole different story.

One of the local guys here running an Elite amphib, is just in the process
of switching out his 180 hp 360 for an O-375 (205 hp). This engine weighs
the same as a 360, but has a stroked crankshaft to get the extra
displacement and hp. If you want to run mogas in this one, you need to
select the lower compression pistons (195 hp).

As for fuel, I use mogas whenever I can. In winter, and on trips, I use
mostly 100LL. Most airports do not sell mogas. Both Superior and ECI

engine

manufacturers approve mogas, but recommend 100LL for break-in and

occasional

use afterwards.

Walter

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of

Tyler

Coleman
Sent: Friday, March 26, 2010 11:16 PM
To: rebel-builders@dcsol.com
Subject: RE: [rebel-builders] rotax + floats ( subject line changed to
reflect content )

Thanks Drew,

I was concerned about that as I live in BC and there are a lot of high
altitude lake I'd like to visit. I'm fine with the idea of a lycoming

160hp

but I'm concerned with all the talk I hear of 100LL becoming a soon to be
forgoten commodity. any thoughts? anyone?

Date: Fri, 26 Mar 2010 00:46:32 -0400
To: rebel-builders@dcsol.com
From: drewjan@cabletv.on.ca
Subject: [rebel-builders] rotax + floats ( subject line changed to

reflect

content )
At 08:31 PM 25/03/2010 -0700, you wrote:
Anyone know if the rotax 912 100hp has enogh umph to operate the rebel

on

amphibs.

Yes. Maybe. It Depends on your mission. If you're near sea level and

it's

not too hot it's probably just fine. What gross weight are you planning?

I

swapped out my 125HP lycoming for 160 hp because I felt I had margional
performance at gross weight on a hot day and I'm in southern Ontario
mostly
600-100'ASL.
Drew

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