Webra 160; was: Mintor 1.70

[Jerry Budd]

That's partly a credit to Buzz's fuel.  Magnum consistently turns 
100-150 rpm better than the leading brands, and it's cheaper too!

Jerry

>Jerry,
>
>I was pleasantly surprised too.   I can only imagine what this 
>engine will perform like in cooler weather.  We have also been 
>surprised that these numbers are coming from 10% Magnum fuel.  Now 
>its just a matter of getting it my plane and trying different props.
>I failed to note that I am using 2 - A5 plugs.
>
>Wayne G.
>
>----- Original Message -----
>From: <mailto:jbudd at QNET.COM>Jerry Budd
>To: <mailto:discussion at nsrca.org>discussion at nsrca.org
>Sent: Monday, August 11, 2003 10:47 PM
>Subject: Webra 160; was: Mintor 1.70
>
>That's pretty good, the best numbers I've heard yet for a 3M-170.
>
>For comparison my Webra 160 turned the APC 17x12 at 8500 rpm at the
>Fresno Contest in June and then again in 104 degree heat at Riverside
>on the 4th of July.  That's not peak rpm but the flight setting which
>was a bit rich (new motor and all).  Magnum #1, YS plug, ES-2C140L90
>pipe set at 23-1/4" baffle to plug, stock 1.75" rise Mac's header, MC
>carb.  The motor is timed so that it doesn't come onto the pipe at
>all (i.e., NO pipe jump), and the throttle response is linear from
>idle to full power.  It's also ultra quiet on the ground (under 92 db
>at the Nats) and in the air.
>
>Tony Frackowiak's running the same setup in an Alliance on Magnum 15%
>fuel and turning 8200-8400 (again set a bit rich).
>
>I can't imagine what else anyone would want out of a motor.  It's
>essentially perfect.
>
>Jerry
>
>
>>My 1.70 hit 8200 rpm with 10% magnum, APC 17X12 regular, at the
>>Lubbock contest. It was hot and high, reports were that it was like
>>being at 7200 ft.
>>
>>
>>
>>Gray Fowler
>>Principal Chemical Engineer
>>Composites Engineering
>>
>><<mailto:rcaerobob at cox.net>rcaerobob at cox.net>
>>Sent by: <mailto:discussion-request at nsrca.org>discussion-request at nsrca.org
>>
>>08/11/2003 10:49 AM
>>Please respond to discussion
>>       
>>          To:        <mailto:discussion at nsrca.org>discussion at nsrca.org
>>          cc:       
>>          Subject:        Re: Mintor 1.70
>>
>>
>>
>>HO-LY-COW !  That's a pretty beefy setup, for sure.  10% Nitro?
>>  You're kiddin', right??
>>
>>Bob P.
>>>
>>>   From: "Wayne Galligan" 
>>><<mailto:wgalligan at goodsonacura.com>wgalligan at goodsonacura.com>
>>>   Date: 2003/08/11 Mon AM 11:27:50 EDT
>>>   To: <<mailto:discussion at nsrca.org>discussion at nsrca.org>
>>>   Subject: Mintor 1.70
>>>
>>>   Just a few notes on my initial test and break-in on this engine.
>>>  It has not been installed in my plane as of this writing but I
>>>cant wait.
>>>
>>>   3M 1.70 stock header
>>>   10 % Magnum fuel
>>>   Bluebird c.f. 2-stroke pipe  24.25" center of head to 1st baffle.
>>>  Total length of exhaust center of head to end of pipe  31.5"
>>>
>>>   Test day 98 degrees and about 35%+ humidity
>>>
>>>   17x12N APC      high 8500rpm low 1600rpm
>>>   17x13 std APC   high 8250rpm  low 1500rpm
>>>
>>>   This is after 5) 16oz tanks of breakin.  I broke it in just like
>>>the OS,  alternating rich to lean during first several tanks.
>>>
>>>   Wayne Galligan
>>>
>>>
>>
>>Bob Pastorello, El Reno, OK, USA
>>rcaerobob at cox.net
>>www.rcaerobats.net
>>Just a few notes on my initial test and break-in on this engine.  It
>>has not been installed in my plane as of this writing but I cant
>>wait.
>>
>>3M 1.70 stock header
>>10 % Magnum fuel
>>Bluebird c.f. 2-stroke pipe  24.25" center of head to 1st baffle.
>>  Total length of exhaust center of head to end of pipe  31.5"
>>
>>Test day 98 degrees and about 35%+ humidity
>>
>>17x12N APC      high 8500rpm low 1600rpm
>>17x13 std APC   high 8250rpm  low 1500rpm
>>
>>This is after 5) 16oz tanks of breakin.  I broke it in just like the
>>OS,  alternating rich to lean during first several tanks.
>>
>>Wayne Galligan
>
>
>--
>___________
>Jerry Budd
><mailto:jbudd at qnet.com>mailto:jbudd at qnet.com
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-- 
___________
Jerry Budd
mailto:jbudd at qnet.com
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