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Engine basics => Engine set up tips => Topic started by: Terry Caron on November 29, 2016, 08:06:24 PM

Title: Enya .25 SS 4301 question
Post by: Terry Caron on November 29, 2016, 08:06:24 PM
When were these made?
Have there been more than one series of the .25 SS?
Mine has the "25" stamped into a milled spot rather than cast into the bypass bulge.
And a round metal venturi insert.
Title: Re: Enya .25 SS 4301 question
Post by: Steve Thomas on November 30, 2016, 12:54:48 PM
Terry, I think they've been making the 4301 series since at least as far back as the mid-80s.
Title: Re: Enya .25 SS 4301 question
Post by: Terry Caron on November 30, 2016, 01:16:31 PM
Tnx for the reply, Steve.
Mine doesn't look like pix of the c/l version (w/cast disp.) but I see pix of the r/c version (stamped disp.) so I think mine is probably a convert.
It runs fine, so all's good.  :)
Title: Re: Enya .25 SS 4301 question
Post by: bob whitney on December 01, 2016, 04:48:31 PM


that looks like the bushing engine ,they also make it in a BB version
Title: Re: Enya .25 SS 4301 question
Post by: Terry Caron on December 01, 2016, 05:00:32 PM
You're right, Bob, also iron/steel P&L.
The AAC version has a red anodized prop driver.
Title: Re: Enya .25 SS 4301 question
Post by: Martin Quartim on December 01, 2016, 07:31:53 PM
Quote from: Terry Caron on December 01, 2016, 05:00:32 PM
You're right, Bob, also iron/steel P&L.
The AAC version has a red anodized prop driver.

My SS25 AAC and the other ones I have seen does not have a red anodized prop driver. The new SS25EX ABC does.

Martin
Title: Re: Enya .25 SS 4301 question
Post by: Terry Caron on December 01, 2016, 07:40:41 PM
Right you are, Martin.
My bad.
Title: Re: Enya .25 SS 4301 question
Post by: Phil Spillman on December 02, 2016, 07:56:56 PM
I believe that one of these was flown on an S-1 Ringmaster in the Brodak Special Ringmaster event last June and it took Third Place over all! It flew quite well with this engine but it needed extra fuel to complete the full AMA pattern. The owner/flyer added a bunch of fuel line around his plane's body and tank and made it through the pattern to take 3rd! Nice power but it did look heavy!

Phil Spillman
Title: Re: Enya .25 SS 4301 question
Post by: Chris Brainard on December 03, 2016, 05:58:02 PM
HI Phil,
That was my Ringmaster, but the engine was the SS30, not the SS25. All up weight was 26 ounces. I built a new tank that is larger and if I top it off, it now runs almost 10 minutes in our thinner air in the foothills west of Denver (about 6000 feet elevation). The SS30 has become one of my favorite engines. Very easy to start, plenty of power and consistently good engine runs...and of course, the legendary reputation Enyas have of lasting a long time.
Chris