Contact   Imprint   Advertising   Guidelines

ufo fluttering..normal?

A forum dedicated to Hydrofoil riders
papasmerf
Frequent Poster
Posts: 419
Joined: Mon Jun 13, 2005 5:18 am
Kiting since: 2002
Weight: 195
Local Beach: west coast
Style: lawn mower
Gear: Slingshot, North, moses, flysurfers, some ozone again, and 17 years of accumulated kite stuff
Brand Affiliation: I like slingshot and north. good folks
Has thanked: 113 times
Been thanked: 18 times

ufo fluttering..normal?

Postby papasmerf » Sun May 02, 2021 4:53 pm

great session on my 5m ufo yesterday, love that kite.

getting a lot of fluttering though when bar pushed out during a transition, in my case, the kite arcs above me during a gybe, so i sheet out bar to reduce lift. the kite flaps a lot. i am not a fan of downlooping the kite for a gybe as i lose too much speed bringing the kite more overhead to prepare for the down loop, i suspect this is just my technique, the kite works fine when normally powered up, just when i punch that bar out, it starts flapping like crazy when depowered. suggestions?

User avatar
GregK
Very Frequent Poster
Posts: 521
Joined: Sat Jul 24, 2010 6:22 am
Kiting since: 1996
Local Beach: Comox, BC
CANADA
Style: Hydrofoil mostly
Gear: Lift 170 Fish & 110 wingsets, 32" strut
Ocean Rodeo & BRM kites
Brand Affiliation: Comox Kite Repair
http://www.comoxkiterepair.ca
Location: Comox, BC CANADA
Has thanked: 14 times
Been thanked: 71 times
Contact:

Re: ufo fluttering..normal?

Postby GregK » Sun May 02, 2021 6:26 pm

Don't sheet it out as far.

All LEI kites will flutter in the luff when fully sheeted out and the fewer struts the kite has, the more pronounced / noticeable that flutter will be.

Herman
Very Frequent Poster
Posts: 1130
Joined: Tue Jun 04, 2019 7:09 pm
Style: My Own.
Gear: SLE, foils and C kites, TTs, Directionals, Landboards, Buggy.
Brand Affiliation: None
Has thanked: 101 times
Been thanked: 254 times

Re: ufo fluttering..normal?

Postby Herman » Sun May 02, 2021 8:32 pm

Looking on the bright side the flapping probably causes a bit of drag that makes the kite less likely to overfly the window into a luff......

User avatar
GregK
Very Frequent Poster
Posts: 521
Joined: Sat Jul 24, 2010 6:22 am
Kiting since: 1996
Local Beach: Comox, BC
CANADA
Style: Hydrofoil mostly
Gear: Lift 170 Fish & 110 wingsets, 32" strut
Ocean Rodeo & BRM kites
Brand Affiliation: Comox Kite Repair
http://www.comoxkiterepair.ca
Location: Comox, BC CANADA
Has thanked: 14 times
Been thanked: 71 times
Contact:

Re: ufo fluttering..normal?

Postby GregK » Sun May 02, 2021 10:01 pm

Herman wrote:
Sun May 02, 2021 8:32 pm
Looking on the bright side ... overfly the window into a luff......
I think you meant "lull"

The drag from your no-strut kite's luffing can also be very useful to almost instantly transition from flying to drifting without having to wait for the kite to fly to edge of the wind window. Kite's bridle also needs to be designed such that the tow point is a bit forward of the kite's lift force center of effort.

Herman
Very Frequent Poster
Posts: 1130
Joined: Tue Jun 04, 2019 7:09 pm
Style: My Own.
Gear: SLE, foils and C kites, TTs, Directionals, Landboards, Buggy.
Brand Affiliation: None
Has thanked: 101 times
Been thanked: 254 times

Re: ufo fluttering..normal?

Postby Herman » Sun May 02, 2021 10:26 pm

I mean luff.... leading edge tucking in the same way as a sail luffs as a vessel is turned upwind. Wind hitting backside of sail or topside of canopy. Flappy TE drag will keep the kite away from edge of window. Hindenburg less likely....

Not worth getting in a flap about it though...
Last edited by Herman on Mon May 03, 2021 4:27 am, edited 2 times in total.

airsail
Frequent Poster
Posts: 382
Joined: Mon Jun 22, 2009 8:57 am
Weight: 80kg
Local Beach: Queens Beach North, Queensland, Australia
Favorite Beaches: Queens North, I don’t travel much
Style: Foiling
Gear: Sonic 3 15mtr, Soul 10 mtr, BRM Clouds 8, 6.2, 4.8, 3.7
Lift, Naish and Levitaz foils
Carbonco and home build boards
Ozone and Duotone wings
Naish Hover 95 foilboard
Brand Affiliation: None
Location: Australia
Has thanked: 86 times
Been thanked: 62 times

Re: ufo fluttering..normal?

Postby airsail » Sun May 02, 2021 10:59 pm

No strut kites flap a lot when approaching the top of their wind range, if your on a 5mtr, change to the 4mtr, doh, no 4, well that’s a bugger

papasmerf
Frequent Poster
Posts: 419
Joined: Mon Jun 13, 2005 5:18 am
Kiting since: 2002
Weight: 195
Local Beach: west coast
Style: lawn mower
Gear: Slingshot, North, moses, flysurfers, some ozone again, and 17 years of accumulated kite stuff
Brand Affiliation: I like slingshot and north. good folks
Has thanked: 113 times
Been thanked: 18 times

Re: ufo fluttering..normal?

Postby papasmerf » Sun May 02, 2021 11:03 pm

airsail wrote:
Sun May 02, 2021 10:59 pm
No strut kites flap a lot when approaching the top of their wind range, if your on a 5mtr, change to the 4mtr, doh, no 4, well that’s a bugger
it's my smallest kite right now,, for about 2 more days,, then getting a 4m (not ufo)

Matty V
Frequent Poster
Posts: 214
Joined: Mon Mar 23, 2020 2:24 pm
Kiting since: 1998
Gear: Home made
Brand Affiliation: None
Has thanked: 27 times
Been thanked: 32 times

Re: ufo fluttering..normal?

Postby Matty V » Sun May 02, 2021 11:18 pm

Sheeted out fully on a strut less kite and complaining it flaps?

Are u ok hun?

papasmerf
Frequent Poster
Posts: 419
Joined: Mon Jun 13, 2005 5:18 am
Kiting since: 2002
Weight: 195
Local Beach: west coast
Style: lawn mower
Gear: Slingshot, North, moses, flysurfers, some ozone again, and 17 years of accumulated kite stuff
Brand Affiliation: I like slingshot and north. good folks
Has thanked: 113 times
Been thanked: 18 times

Re: ufo fluttering..normal?

Postby papasmerf » Mon May 03, 2021 12:20 am

Matty V wrote:
Sun May 02, 2021 11:18 pm
Sheeted out fully on a strut less kite and complaining it flaps?

Are u ok hun?
no, i need some damn sympathy. it's my first strutless you cyber bully!
These users thanked the author papasmerf for the post:
GregK (Mon May 03, 2021 4:03 am)
Rating: 6.67%

Trent hink
Frequent Poster
Posts: 409
Joined: Mon Jan 07, 2019 4:59 am
Local Beach: Turtle beach, Venice inlet, lido key
Style: Creepy old man
Gear: Peak4, soul, solo, hydrofoil, couple of surfboards, a twintip I made 10 years ago.
Has thanked: 61 times
Been thanked: 79 times

Re: ufo fluttering..normal?

Postby Trent hink » Mon May 03, 2021 1:01 am

keeping a bit of pressure on the bar is good advice, but if that doesn't work, try flying the next size down. These one and no strut leis generally seem to work best at the lower end of their wind-range, especially for hydrofoiling.

The 9 meter ufo I got to try out once seemed pretty sweet, and the low-end was surprisingly low. But I only tried it once in light wind, so... what do I know?


Return to “Hydrofoil”

Who is online

Users browsing this forum: No registered users and 4 guests