I'm thinking of putting a radius on the leading edge of my 20 year old Crokers. They came with squared edge but have worn down some over the years. Any benefits? Any pitfalls?
Strainer
Carl,stopwatch...
Thank you for your quick response. I'm hoping to gain a little speed from the lower resistance to water flowing over the leading edges (and maybe even a little less drag when feathered during recovery). Likely not significant or measurable with a
Strainer
On 04/03/2022 08:25, Strainer wrote:stopwatch...
Carl,
Thank you for your quick response. I'm hoping to gain a little speed from the lower resistance to water flowing over the leading edges (and maybe even a little less drag when feathered during recovery). Likely not significant or measurable with a
Strainer
You'd probably reduce aerodynamic drag more by adding trip-strips to the oar-shafts, helping to induce better boundary layer attachment on the trailing side of the shaft & prevent formation of a more turbulent wake.
But any measure that reduces aero drag is worthwhile (as long as it
doesn't come with unintended consequences), while enhancing flow over
the blade surface during the early and later phases of the stroke makes
good sense.
Cheers -
Carl
--
Carl Douglas Racing Shells -
Fine Small-Boats/AeRoWing Low-drag Riggers/Advanced Accessories
Write: Harris Boatyard, Laleham Reach, Chertsey KT16 8RP, UK
Find: tinyurl.com/2tqujf
Email: ca...@carldouglasrowing.com Tel: +44(0)1932-570946 Fax: -563682
URLs: carldouglasrowing.com & now on Facebook @ CarlDouglasRacingShells
On Monday, 7 March 2022 at 13:05:01 UTC, carl wrote:stopwatch...
On 04/03/2022 08:25, Strainer wrote:
Carl,
Thank you for your quick response. I'm hoping to gain a little speed from the lower resistance to water flowing over the leading edges (and maybe even a little less drag when feathered during recovery). Likely not significant or measurable with a
Strainer
You'd probably reduce aerodynamic drag more by adding trip-strips to the oar-shafts, helping to induce better boundary layer attachment on the trailing side of the shaft & prevent formation of a more turbulent wake. But any measure that reduces aero drag is worthwhile (as long as it doesn't come with unintended consequences), while enhancing flow over
the blade surface during the early and later phases of the stroke makes good sense.
Cheers -
Carl
--why doesn't anyone do that?
Carl Douglas Racing Shells -
Fine Small-Boats/AeRoWing Low-drag Riggers/Advanced Accessories
Write: Harris Boatyard, Laleham Reach, Chertsey KT16 8RP, UK
Find: tinyurl.com/2tqujf
Email: ca...@carldouglasrowing.com Tel: +44(0)1932-570946 Fax: -563682 URLs: carldouglasrowing.com & now on Facebook @ CarlDouglasRacingShells
estimates of 0.1% advantage (2 metres) in calm conditions seem worth pursuing?
Are there details of what they should be like - I am a bit curmudgeonly and tend to like to try thing out :)
James
On Thursday, 10 March 2022 at 18:41:33 UTC, James HS wrote:stopwatch...
On Monday, 7 March 2022 at 13:05:01 UTC, carl wrote:
On 04/03/2022 08:25, Strainer wrote:
Carl,
Thank you for your quick response. I'm hoping to gain a little speed from the lower resistance to water flowing over the leading edges (and maybe even a little less drag when feathered during recovery). Likely not significant or measurable with a
Strainer
You'd probably reduce aerodynamic drag more by adding trip-strips to the oar-shafts, helping to induce better boundary layer attachment on the trailing side of the shaft & prevent formation of a more turbulent wake. But any measure that reduces aero drag is worthwhile (as long as it doesn't come with unintended consequences), while enhancing flow over the blade surface during the early and later phases of the stroke makes good sense.
Cheers -
Carl
--why doesn't anyone do that?
Carl Douglas Racing Shells -
Fine Small-Boats/AeRoWing Low-drag Riggers/Advanced Accessories
Write: Harris Boatyard, Laleham Reach, Chertsey KT16 8RP, UK
Find: tinyurl.com/2tqujf
Email: ca...@carldouglasrowing.com Tel: +44(0)1932-570946 Fax: -563682 URLs: carldouglasrowing.com & now on Facebook @ CarlDouglasRacingShells
estimates of 0.1% advantage (2 metres) in calm conditions seem worth pursuing?
Are there details of what they should be like - I am a bit curmudgeonly and tend to like to try thing out :)
JamesFound a product called Turbulator tape and will have a go at fixing to my sculling blades :)
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