Hard nose/ soft nose

[Seaharrier]

Originally Posted by Jono

Care to explain? I can't figure out how a properly designed hardnose would be any wetter/drier than a piece of tube...

If you have a soft nose, the tubes in the front act as an "umbrella". All the spray coming from the nose is pushed away. Our rib has a hard nose. The front is much narrower and the spray coming from the nose is not pushed away as much as with tubes.

But one of the nicer things is stuffing the nose in a wave when it’s quite hot and your passengers need some refreshment! Works pretty well!!!

[craig_c]

look what happened to the rib on top gear, i would say soft nose for messing about in rivers or lochs but hard nose out at sea. I feel our boat is a bit less shuddery with the hard nose compared to the old boat.

[Cookee]

Originally Posted by craig_c

look what happened to the rib on top gear,

From memory the tube on top gear (a Goldfish) had a problem with the rear compartment on one side ................ but I've been wrong before!

[J S]

Originally Posted by Cookee

From memory the tube on top gear (a Goldfish) had a problem with the rear compartment on one side ................ but I've been wrong before!

No it was the front Bow compartmant on the port side. Picture below.

Video here

http://www.bbc.co.uk/topgear/mediapl...1&tab=1&clip=2

James

[codprawn]

Couldn't get the link to work - tried looking for it on youtube - used to be there but they have removed it because the Beeb complained - miserable gits - pay my licence fee - why shouldn't I watch it where I like???

[codprawn]

As to tubes bursting pressure MUST have a lot to do with it - too little and the tubes flop around too much but too high a pressure will make them much more liable to bursting - think of a balloon!!!

[J S]

If you go here http://www.bbc.co.uk/topgear/show/ep...episode6.shtml
and click on watch video that should work.

James

[jwalker]

Originally Posted by codprawn

Couldn't get the link to work ..

Works fine from here, Codders.

[craig_c]

i was right about something

YASSSSS

[ribraff]

I've retubed a fair few of the hardnose ribs, most of them were Ospreys, i've seen an older Sea harrier with some serious stress cracks in the GRP nose section which i would have said was caused as a result of being stuffed, on the subject of soft nose ribs, i've also repaired a few where the front sections have been torn off in bad conditions, there's a thread somewhere on Mike Garsides Ribtec which i repaired.
More recently we repaired a large Gemini 9 mtr which had done the same, 9 people on board a sightseeing boat and the tubes came off all the way back 2/3 rd's of the length, it always seems to be the heavier boats which suffer from this problem although it is not very common, all of the boats i've repaired which have suffered from this condition have been inboard diesels and carrying heavy loads at the time.

[ribraff]

http://rib.net/forum/showthread.php?...magellan+alpha

[shthpnz]

Originally Posted by Seaharrier

One negative thing about them .... it's not a very dry concept!

Imho the shape of the bow is crucial. On my ZAR 65, a deep bowed, hard nose type RIB, even on the rough seas no water comes over.

Indeed near objects you have to manoeuvre a hard nosed boat more carefull than the above mentioned 'go-cart style'

Regards,