Blade length Gearing
David
experiment over the winter.....
I know it can be subjective and what feels right...but I'll ask
anyways.
Sculling....
Is there a better blade length/gearing that would suit a person who
has an identical arm span to theie height? i.e. they dont have 'monkey
arms' ha-ha
188cm span 188cm height
need any more info just let me know.
Jim Dwyer
Check your numbers. I do not know what they mean.
I just tried 156 span 169/86 CII fat blades and I liked it.
Jim
"David" <quadd...@googlemail.com> wrote in message
news:af036dcf-84fb-4966...@l2g2000yqd.googlegroups.com...
David
> David:
>
> Check your numbers. I do not know what they mean.
>
> I just tried 156 span 169/86 CII fat blades and I liked it.
>
> Jim
>
>
> news:af036dcf-84fb-4966...@l2g2000yqd.googlegroups.com...
>
>
>
> > Its come to that time of year again when we have the time to
> > experiment over the winter.....
>
> > I know it can be subjective and what feels right...but I'll ask
> > anyways.
>
> > Sculling....
>
> > Is there a better blade length/gearing that would suit a person who
> > has an identical arm span to theie height? i.e. they dont have 'monkey
> > arms' ha-ha
>
> > 188cm span 188cm height
>
>
> - Show quoted text -
Jim...
my apologies
arm span 188cm and my height 188cm
Just wondering of any one had any input on gearing in relation to arm
span.
Carl Douglas
Arm span (to finger tips?) & overall height are not of themselves
particularly meaningful numbers, David.
So much depends on your strength, intended ratings, blade depth of
immersion, amount of body swing, leg length, hips to shoulders distance
& where you put your stretcher.
I very much like the idea that you intend to experiment. In that case
it might be best not to work to guidelines. You say you have a winter
in which to experiment? In that time you can make a quite extensive
multivariate analysis - into which you can also paste your subjective
views on what seems to be doing what & record your boat speeds & resting
& rowing pulse-rates.
You could also experiment with load distribution through the stroke, &
recovery rhythms. Here consider the excellent stuff that Magnus
Burbanks posted recently on RSR. It might be that technique matters as
much as, or more than, many of the other variables.
Please report back.
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: http://tinyurl.com/2tqujf
Email: ca...@carldouglas.co.uk Tel: +44(0)1932-570946 Fax: -563682
URLs: www.carldouglas.co.uk (boats) & www.aerowing.co.uk (riggers)
David Jillings
would add that the span (distance between the pins) is as important, if
not more so, than the inboard on the blades. You have to be happy about
the span before fiddling with the blades.
It is my view that many scullers tend to set their gearing too heavy,
but it depends on how your body works. If you are happy lifting a big
heavy dead weight in the gym, go for a heavier gearing. If you can't
lift a big weight but can move a light bar very fast then go for a
lighter gearing.
I am currently doing just the same as you on the water - making small
gearing changes and then doing 10 minute pieces at a couple of pips
below head race rate to see what can be done without building up too
much lactic in the legs. On race day I will change the gearing
depending on the conditions. In other words, there is no set right and
wrong, only what suits you. Good luck.
David.
Fordmeister
wrote:
Easy fix is using some spacers. Especially useful on the tideway when
paddling against the stream. Spin and take them off and see how it
feels.
Charles Carroll
"Jim Dwyer" <jim....@sympatico.ca> wrote in message
news:hd14tv$f8g$1...@news.eternal-september.org...
Charles Carroll
I have a friend who just purchased CII fat smoothies. With these blades he
has done his fastest time ever for 250m. He says you can really load these
blades.
My own gearing is a 155 spread 199/83. Your numbers, 169 for the outboard,
seems astonishingly short.
Cordially,
Charles
Carl Douglas
Errr.....? There is hardly ever any difference between paddling
upstream & downstream on a broad tidal waterway. It just seems slower
going upstream, if you watch the bank.
Much more relevant is wind force & direction - a stiff breeze can cut
your headwind speed by >20%, which would merit a well-considered gearing
change with spacers, as you suggest.
However, you do already have a most effective means of easing stroke
gearing by changing your stroke length by shortening the catches to
reduce the amount of severely-geared front portion of the upwind strokes.
Tinus
> upstream & downstream on a broad tidal waterway. It just seems slower
> going upstream, if you watch the bank.
>
> Much more relevant is wind force & direction - a stiff breeze can cut
> your headwind speed by >20%, which would merit a well-considered gearing
> change with spacers, as you suggest.
Using the principle of relativity a difference in stream velocity is
equivalent to an opposite difference in wind.
When rowing downstream there is a relatively higher tailwind. So, for
the same power input the speed of the boat relative to the water is
lower. This causes the rower to experience a higher resistance (=
change/potential) as the angular displacement of the oar (change) is
smaller for the same force or power profile (potential).
Tinus
This sentence shows my troubles with the English language. I meant
headwind. Rowing downstream you are moving faster trough the air so
relatively more air resistance compared to when rowing upstream.
Jim Dwyer
Here is the correction:
Span 156
Total oar length 269
Inboard 86
They are special order short CII fat ultralight oars.
Jim
"Charles Carroll" <charles...@comcast.net> wrote in message
news:7lj6c8F...@mid.individual.net...