Jez's Knob

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davidmurray79
davidmurray79
WA
53 posts
WA, 53 posts
30 Jan 2006 1:49pm
Anyone used a Jez's Knob ? Just broke my nose off my new JP 93L freestyle [V. I'm also told you can get some kind of padding for your mast??? First time in the waves... wave sailing rocks!!
Lesley
Lesley
WA
38 posts
WA, 38 posts
30 Jan 2006 1:55pm
Yes I've used Jez's Knob. Works very well! Deflects the mast so that it doesn't hit and break the front/nose of your board. Buy them from Jez at Second Wind Sailboards. He also sells the padded mast protectors.
davidmurray79
davidmurray79
WA
53 posts
WA, 53 posts
30 Jan 2006 2:16pm
Thanks for your help Lesley. I'll take my board in and see how one fits. I'm still quite upset that I've damaged my new baby having only brought it new 1 week ago! What size board do you use it on?
grumplestiltskin
grumplestiltskin
WA
2331 posts
WA, 2331 posts
30 Jan 2006 2:27pm
David, it must be a disease with the 93's
I cracked open the schnoz on mine after only a couple of weeks use

I dont know how the knob will go, the masttracks not very long and from memory the knob uses about the same space as a mastbase.

think you might have to go with the mast padding, or just tape some foam rubber onto the noze with duct tape.
davidmurray79
davidmurray79
WA
53 posts
WA, 53 posts
30 Jan 2006 2:35pm
Yeah I thought that might be the case. I'll try one for size anyway but I think your definitly right. Hopefully the mast padding will make a bit of difference. Man I was angry with myself when it happend such a good looking board!
decrepit
decrepit
WA
12885 posts
WA, 12885 posts
30 Jan 2006 7:06pm
You might want to do a forum search, this topic was bought up a while ago, and the knobs had some negative comments, something about tearing the mast track out???
westozwind
westozwind
WA
1419 posts
WA, 1419 posts
31 Jan 2006 11:02am
If you are out in the waves I think the knob will hamper your efforts to bring the mast round the nose of the board when waterstarting as it cannot clear the knob. Gaffer tape some padding to the nose of you're board and use a mast protector upside down unsder you're boom head. It's usually the mast, and not the boom that is responsible for the cracks in the nose.
JEZ
JEZ
WA
395 posts
JEZ JEZ
WA, 395 posts
31 Jan 2006 12:02pm
quote:
Originally posted by decrepit

You might want to do a forum search, this topic was bought up a while ago, and the knobs had some negative comments, something about tearing the mast track out???



When viewed from another perspective;
'You might want to do a forum search, this topic was bought up a while ago and the knobs had some positive comments, something on the lines of there never being a case of it ever tearing a mast track out or damaging a board.
It's gossip that is usually negative.

Jez
davidmurray79
davidmurray79
WA
53 posts
WA, 53 posts
31 Jan 2006 12:05pm
From what I've heard Jez's Knob is far more pratical for learner boards. Not being able to move the mast around the front of the board would be a real problem for me. A mast protector sounds precisely what I'm after. My week old JP should be ready for another thrashing this weekend!! Thanks guys for you help and advice.
davidmurray79
davidmurray79
WA
53 posts
WA, 53 posts
31 Jan 2006 12:11pm
Jez what time are you guys open till? I'll pop in and grab a mast protector if you sell any? May pick up a Knob for my Girl Friends board (Freesex 108) My light wind board!! Thanks.
racycoot
racycoot
WA
315 posts
WA, 315 posts
3 Feb 2006 4:02pm
I've often thought that the knob would concentrate all the impact to the one spot on the board (where it is attached). Seems to me like it wouldn't be long before major softness becomes an issue...
JEZ
JEZ
WA
395 posts
JEZ JEZ
WA, 395 posts
3 Feb 2006 5:22pm
Softness under the mast-track??
I don't think so!!

Jez
Haircut
Haircut
QLD
6491 posts
QLD, 6491 posts
3 Feb 2006 10:05pm
might be worth a read for those interested in a mast deflector

http://www.windsurfer.co.uk/nosedamage%20.htm

and bottom of this page

www.gunsails.co.uk/en/trimtips.htm#Caution


Although i've never used a deflector, i have had two boards where the mast track pushed into the board at the front end of the track due to landing jumps. Not all boards (especially some customs) have the mast track seated in a thick foam block reaching all the way to the bottom of the board. I've cut these damaged boards open and know this first hand.


also worth a read

www.boards.co.uk/articles/index.asp?ID_A=177&article_type=50



Juice
Juice
WA
280 posts
WA, 280 posts
3 Feb 2006 8:36pm
Why don't the board manufacturers make the boards stronger in this area in the first place ?
Haircut
Haircut
QLD
6491 posts
QLD, 6491 posts
3 Feb 2006 10:48pm
i think most of the modern production boards are stronger around the mast track now. Some pre 2000 models seem to be most likely to be less robust, and probably skimped on high density foam to reduce weight

personally i'd rather bust the nose than damage the mast track area. nose is generally quick and easy to fix, from the repairs i've done to my boards. not pretty repairs mind you, but are water tight

the problem with squashing the mast track into the board is that usually it is not easily noticed. You can go on sailing for ages before you realise that the skin of the board has seperated from the mast track, and water is soaking in. Usually u don't realise until the board has put on significant weight. at least nose damage is obvious.

Anyway. It seems from these articles that Jez's knob is the most mast track friendly
Juice
Juice
WA
280 posts
WA, 280 posts
5 Feb 2006 1:30am
Why don't the board manufacturers make the boards stronger in this area in the first place ?

I was referring to the nose area

JEZ
JEZ
WA
395 posts
JEZ JEZ
WA, 395 posts
5 Feb 2006 11:29am
Jez's Knob Nose Protector
"Jez's Knobs are made from a hard but flexible plastic, and are available in a variety of attractive colours. They screw in place just in front of the deckplate and secure with the same type of bolt. The knobs work in part by deflecting the rig away from the nose, and in part by deforming upon impact – which absorbs some of the energy from the fall. They are recommended for use in conjunction with boom bras or "bash pads".
From an ergonomic perspective Jez's Knob performs well. It is quite small and sits neatly tucked up next to the deckplate, there are no nasty edges to catch your foot on, and it doesn't really get in the way during manoeuvres. It should be borne in mind, however, that the front 8.5cm of your mast track will become unusable with the Knob in place – which could be a problem for some boards.
In catapult simulation tests, the rig still made contact with the nose, though the severity of the impact was significantly reduced. Heavy catapulters will still need additional protection though. Excessive leverage seemed to be less of a problem with this design than with the Deviator - the flexible nature of the Knob appeared to be absorbing some of the stresses that the more rigid Deviator design was directing towards UJ and mast track.
Provided you don't need to position your deckplate at the front of your track the Jez's Knob is an unobtrusive piece of kit that effectively limits catapult damage, especially if used in conjunction with other forms of nose protection."
Captain Crash-Boards website
Haircut
Haircut
QLD
6491 posts
QLD, 6491 posts
5 Feb 2006 10:39pm
quote:
Originally posted by Juice

Why don't the board manufacturers make the boards stronger in this area in the first place ?

I was referring to the nose area





a light nosed board is nicer to handle in jumps. Once sailors get beyond the regular catapult stage, most generally appreciate the lighter nose. Certainly nicer for spinny tricks and loops.
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