Il y a quelques nuits (l’article était prêt, mais j’avais oublié de le poster…), John (Sunrise, Poole) nous envoyait un mail qui soulèvait un problème que rencontre (à priori) l’ensemble des propriétaires de sun 2000 … qui ne s’est jamais plaint d’un jeu prononcé dans la barre franche ? Nous en parlions encore samedi dernier avec Jean-Louis (Mouille-Col) et Cyril (Véloké)….
” … J’ai des problèmes avec la barre franche (tiller); c’est “degagé” dans le cadre du safran (j’espere que les mots sont corrects, en anglais,’loose’, ‘rudder stock’). Y at’il d’autre gens avec ce problème? “
Pour répondre à cette première question: Oui, tous les propriétaires que j’ai croisés sont concernés, quelque soit la version du safran (sabre ou relevable). Et ton français est excellent! Sinon, pour les francophones: Tiller = barre franche, Rudder Stock = Cage de safran, soit la pièce sur laquelle on trouve le support/guide de barre.
” Donc, j’ai tout mesuré et écrit cette lettre, je suis desolé, c’est en anglais…
I am starting to correct and improve the rigging on Sunrise. As well as the problems with rigging on Sunrise, there is also sideways movement on the tiller, which is a loose fit in the rudder stock. I have done a sketch showing the main points of the tiller and stock - not great art but I hope it’s clear.
As far as I can see the rudder stock is ok, although in my opinion it is rather short and does not support the tiller well.
The movement is due to the undersized and tapered tiller, and play on the pivot bolt where it passes thro the stock and tiller. I think the tiller should be parallel and an exact fit where it enters the rudder
The internal width of the rudder stock is 50mm; the tiller varies from 49 to 47mm where it enters the rudder. Sideways play between tiller and stock is about 2.7mm, resulting in about 25mm play at the front of the tiller; not exactly precision and resulting in crushed fibres and water penetration. This can only get worse with wear. Also, the tiller does not sit at the base of the stock, so there is pressure from the sharp front edge of the stock on the bottom of the tiller again resulting in crushed fibres and water penetration; a good spot for rot to set in. The pivot hole is drilled at 90 degrees to one side of the tiller, Because the tiller is tapered, this means that the tiller is not central in the rudder.
There is cross grain at the curve of the tiller, another weak point.
The shank of the pivot bolt is too short, such that the thread rather than the shank lies in the hole on one side of the stock.- result about 1mm play at the stock regardless of the tiller.
As a result, there is damage to the tiller in line with the front of the stock, ie, crushed fibres and water penetration due to pressure on the sharp edge of the side of stock as the tiller wobbles. There are also small splits starting in the aft end of the tiller,
This in a boat that has sailed for about 9 hours.
I have sent this info and the sketch to the concessionaire, he will send them to Jeanneau. He says he thinks that I should get a new tiller, and possibly a new rudder stock, under warranty. I’ll believe it when I see it.
In my opinion, if the tiller has been made to the design drawings, then the design is wrong. If the tiller is not to drawing, then Jeanneau quality assurance is poor. Has anyone else encountered these problems?
John, Sunrise #1331, Poole
Merci John, et désolé de poster l’article si tard…