Well, I can't help much but here goes. I don't have any results from
Narromine 1978, and I have points results but no speeds from Waikerie 81.
Average winners speeds were:
Year Place Open 15M
Std
77 Renmark 112.9 (.94) 106.6 (.97) 103.5
79 Cunderdin 97.1 (.99) 96.6 (.91) 87.8
80 Benalla 114.4 (.97) 110.8 (.93) 102.5
Overall 108.1 (.97) 104.7 (.94)
97.9
The figures in brackets are the percentage speed differences between the
classes (Open-15m and 15m-Std).
I only used winners speeds (I'm not that much of a masochist and anyway
winners speed is all that is often available) but I have researched
before and found a good deal of consistency in the spread of speeds, so
it is probably still a fair comparison.
In all those contests Open and 15 metre flew the same task - though of
course the start gate opening would have been different. Nimbus 2's won
every contest in Open Class, 15M were shared (Pik 20, Mini-Nimbus and
ASW20) and in Standard Class Hornet, Cirrus and Jantar shared the honours.
Differences seem larger when speeds are higher, in favour of Open Class
- which would question the "lead-sled" theory - and the difference
between Open and 15 Metre is generally less than between 15 metre and
standard.
I found only a couple of individual days when a 15 metre winning speed
was higher than an Open class winning speed, and when that happened it
was by a whisker. You were definitely better off with long wings, and
probably still are.
Cheers
/Tim/
/tra dire e fare c'รจ mezzo il mare/
On 19/08/2011 10:40, Mike Borgelt wrote:
At 01:06 AM 19/08/2011, you wrote:
In the late 70s were 15M speeds faster than open class speeds? I
think Malcom Jinks and Tony Tabart would disagree!
Tom
Would someone please dig up the results from say the Renmark
Nationals(Cirrus and Hornet in Standard class vs Nimbus etc in Open),
the following year at Narromine and Benalla 79-80 and Waikerie 80 -
81(15m classes and at Narromine in 77-78 the 15m and Open flew the
same tasks - 15M was in Open class too), Narromine 81 - 82(LS4 came on
the scene) and see how these terrible old gliders went when flown by
good pilots, please? Just use the speeds of the people from first down
to 90% of the winning score.
Then we can all bleat from a position of knowledge. Probably less fun,
though.
Mike
Borgelt Instruments - manufacturers of quality soaring instruments
since 1978
phone Int'l + 61 746 355784
fax Int'l + 61 746 358796
cellphone Int'l + 61 428 355784
email: mborg...@borgeltinstruments.com
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