Mintor Review

[Peter Pennisi]

Guys,

 

I don't believe it's all about ground RPM. I can tell you my 140L tachs
about the same as my DZ on the ground, but in the air it is a completely
different story. I am sure the same applies to the 2 strokes.

 

Peter

 

 

 

  _____  

From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On
Behalf Of jghughes
Sent: Friday, 2 April 2004 12:14 PM
To: discussion at nsrca.org
Subject: Re: Mintor Review

 

I normally agree with you guys on 2 stroke tuning, but as we lengthen the
pipe to get a smoother transition, what is really happening is you are
bringing the "resonance" rpm down and giving up top end power. If you go to
Ed Hartley's two stroke page, You will see that there is not a lot of
difference in rpm between the muffled OS1.40's and the tuned pipe ones. I
agree that if you have an engine ported for a pipe and all's you care about
is top end, a pipe makes a huge difference. But we care more about
throttleability on these engines, so the HP is down. I'll loan one of you
guys my 590 and you can test back to back if you want.

 

----- Original Message ----- 

From: Dean Pappas <mailto:d.pappas at kodeos.com>  

To: discussion at nsrca.org 

Sent: Thursday, April 01, 2004 12:41 PM

Subject: RE: Mintor Review

 

Karl's right.

    Dean

-----Original Message-----
From: Karl G. Mueller [mailto:kgamueller at rogers.com]
Sent: Thursday, April 01, 2004 3:37 PM
To: discussion at nsrca.org
Subject: Re: Mintor Review

Steve,

 

With proper exhaust port timing and setup with a good pipe you will

loose that bet. My bet is that you will gain closer to 20% improvement

in power, of course with more power comes a higher fuel consumption

as well. Most engines are very conservatively ported in the exhaust

timing to run on a muffler as well as on a pipe. Just an other compromise

by the manufacturers.

 

Karl G. Mueller
kgamueller at rogers.com
     

----- Original Message ----- 

From: Patternrules at aol.com 

To: discussion at nsrca.org 

Sent: Thursday, April 01, 2004 9:49 AM

Subject: Re: Mintor Review

 

In a message dated 4/1/2004 9:28:50 AM US Eastern Standard Time,
d.pappas at kodeos.com writes:

Mintor 140 article, how does it run on a muffler as
opposed to a pipe. I would expect some loss in power
but also a loss in cost.

 I don't use pipes on any on mine engines Jeff Hughes and I have been using
the Bolly 590r which is a muffler, no tuning head aches, no midrange
problems, if you change props, fuel or anything else NON PROBLEMS, I have
been running the Mintor 140 with it and it runs super, don't know how much
less power you get from just running a muffler but I'd bet it's not over 5%,
I use Coolpower 15% fuel.

 

 

Steve Maxwell

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