[F500] 493 Track Testing

[John Whitling]

So what kind of rev range was the 493 operating in, as opposed to the 494?

Art wrote:

>Cory,
>
>Q had discussions with Olaf Aaen and the results of those discussions
>indicate that the performance difference between his 493 and 494 pipes is
>miniscule. The designs do have minor differences but he suggests that a
>tradeoff between them in various performance scenarios results in a zero sum
>game. 
>
>Therefore, from his perspective and ours, there is no clear performance
>difference(advantage)no matter which pipe is used.
>
>Art 
>
>-----Original Message-----
>From: f500-bounces at f500.org [mailto:f500-bounces at f500.org] On Behalf Of Cory
>McLeod
>Sent: Monday, May 17, 2004 10:43 AM
>To: f500 at f500.org
>Subject: Re: [F500] 493 Track Testing
>
>Art,
> 
>Thanks for posting the 493 info.  Have you guys started experimenting with
>different exhaust pipe's yet?  Is my memory correct that Don Clar used a 494
>exhaust when he ran his "test".
> 
>Thanks, Cory
>
>
>Art <qreshadow at bellsouth.net> wrote:
>I'd like to advise the list that QRE has just completed their 1st track
>testing event with the Rotax 493 engine. The race was a double regional at
>Pocono International in Pennsylvania.
>
>During the initial practice session, the engine was run rich with
>downward(lean) adjustments to the jets and needle positions made as the
>sessions unfolded. We eventually reached the settings that were recommended
>for the engine. We found that the engine ran fine and was competitive with
>the 494s present. Everyone was within 1/2 second of each other and QRE was
>the only one running the 493.
>
>The 493 was 2 seconds shy of the personal track record of the driver when he
>ran a 494 there last year. It is Q's stated opinion that we found out
>exactly what Don Klar found out in 2003, i.e. the engines are equal. I
>should also point out that the 800# minimum was used as the weight base
>since that is the weight listed for regional racing in 2004. 
>
>Our testing will continue throughout the year with results and comments
>forwarded to Topeka and to this list.
>
>Art
>_______________________________________________
>F500 mailing list - F500 at f500.org
>To unsubscribe or change options please visit:
>http://f500.org/mailman/listinfo/f500
>*** Please, DO NOT send unsubscribe requests to the mailing list! ***
>		
>---------------------------------
>Do you Yahoo!?
>SBC Yahoo! - Internet access at a great low price.
>_______________________________________________
>F500 mailing list - F500 at f500.org
>To unsubscribe or change options please visit:
>http://f500.org/mailman/listinfo/f500
>*** Please, DO NOT send unsubscribe requests to the mailing list! ***
>_______________________________________________
>F500 mailing list - F500 at f500.org
>To unsubscribe or change options please visit:
>http://f500.org/mailman/listinfo/f500
>*** Please, DO NOT send unsubscribe requests to the mailing list! ***
>
>  
>