140 FZ Prop Size

[Ron Van Putte]

On Feb 13, 2005, at 9:01 AM, Dowayne Gould wrote:

> Would the 16-10 prop recommendation apply to a 140 sport also?
> The model is a 2m Viper.

I think the 1.40FZ, the 140L and the 140 Sport end up being almost the 
same engine.  The 140L was an "improvement" on the 140FZ, in which the 
compression ratio was increased for more power.  Unfortunately, the 
compression ratio was raised so high that most of them suffered from 
detonation problems and pilots added head gaskets to lower the 
compression ratio.  That made the modified 140Ls about the same as the 
140FZ.  From what I understand, the production molds for the 140L 
eventually became so worn that they had to produce new molds.  They 
decided to change the name to the 140 Sport at the same time.  Any 
comments from those who know "what really happened"?

Ron Van Putte

> ----- Original Message ----- From: "Bob Kane" <getterflash at yahoo.com>
> To: <discussion at nsrca.org>
> Sent: Saturday, February 12, 2005 9:15 PM
> Subject: Re: 140 FZ Prop Size
>
>
>> 15-12, 16-10. I prefer a 16-10, a little slower in
>> level flight, a little more ooomph on the uplines.
>> --- Lem Stevens <stevenslem at comcast.net> wrote:
>>> What is a reasonable prop for a YS 140 FZ?  I have
>>> it on a 2M NOVA.
>> =====
>> Bob Kane
>> getterflash at yahoo.com
>> __________________________________ Do you Yahoo!? The all-new My 
>> Yahoo! - Get yours free! http://my.yahoo.com 
>> =================================================
>> To access the email archives for this list, go to
>> http://lists.f3a.us/pipermail/nsrca-discussion/
>> To be removed from this list, go to 
>> http://www.nsrca.org/discussionA.htm
>> and follow the instructions.
>>
>
> =================================================
> To access the email archives for this list, go to
> http://lists.f3a.us/pipermail/nsrca-discussion/
> To be removed from this list, go to 
> http://www.nsrca.org/discussionA.htm
> and follow the instructions.
>

=================================================
To access the email archives for this list, go to
http://lists.f3a.us/pipermail/nsrca-discussion/
To be removed from this list, go to http://www.nsrca.org/discussionA.htm
and follow the instructions.