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Booms

Created by berowne berowne  > 9 months ago, 2 Oct 2009
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berowne
berowne

NSW

1555 posts

2 Oct 2009 11:50pm
G'day

I broke my boom and it is time for a new one.
Interested in opinions of what Booms are good vs great.

Does a continuous alloy / carbon front end offer an advantage over a joined construction ?

Thanks
Berowne



nebbian
nebbian

WA

6277 posts

2 Oct 2009 10:06pm
From here:
www.seabreeze.com.au/forums/topic.asp?TOPIC_ID=54614

Select to expand quote
Paul Kelf said...

Monocoque construction came from carbon booms.
Alloy Monos came about as it reduced labour & components (read cheaper to manufacture)
The down side is the alloy is only 1.5mm thick through the front fitting.
A traditional 3 piece boom has a 3mm thick bend through the front & then an overlap in the connection with the arms making 4.5mm thick.
Mono booms are also a throw away when damaged, 3 piece can usually be repaired if the manufacturer suppluies spare parts.
It looks like the new NP construction is 3 piece, with a crimped? or glued? connection rather than bolted.
This may be a step forward but only time will tell.
The latest shapes in alloy booms, although it look stupid it comes about to try & make it more comfortable for the front hand but more inportantly to keep the bend radius through the front as big as possible so as not to weaken the alloy when bending.
Good to see they are going back to larger dia arms on bigger booms, this is why so many brands have had so many failures over the last few years & booms have been so flexy.
Common sense prevails, finally!
Marketing make up all sorts of reasons for changes, usually BS.


Note that Paul makes and sells booms, he knows what he's on about
Squid Lips
Squid Lips

WA

708 posts

7 Oct 2009 12:56pm
My booms normally last me a few years and the last couple failed as a result of corrosion where the arms are screwed or riveted to the head. One piece won't have this problem so it is an advantage in aluminium booms. Time will tell how long my new style Aeron lasts. Over a year so far..
WindWarrior
WindWarrior

NSW

1019 posts

7 Oct 2009 5:58pm

100% carbon wave boom
Rigs sails from 4.2 to 6.2
93kg hanging off it... sometimes literally while being rag dolled in surf
4 years and still going strong.
You get what you pay for.

Will never return to aloy
my 2 cents

Kev
Poida
Poida

WA

1922 posts

7 Oct 2009 10:17pm
^
^
^
what he said
sausage
sausage

QLD

4873 posts

5 Nov 2009 1:24am
Paul Kelf definately knows what he's talking about. Snapped a brand new monocoque aluminium boom this afternoon and it hadn't once been put under crash conditions. First and last mono ali I'll be purchasing.

Sorry, no brand name as I don't want to be seen as one of those brand bashers. Actually I'll try to upgrade to said brand's mono carbon. First the warranty issue though.
westozwind
westozwind

WA

1416 posts

5 Nov 2009 8:43am
I'm willing to name a brand.
Neil Pryde X9 full carbon boom (flame suit at the ready)
Check out the pix from the PWA, even the non Pryde sponsored slalom guys use em in droves.
Many wave sailors too.
My 145 to 195 wave is still going strong after 5 seasons, and it's had some punishing ( jumping in harness and wipeouts )
I know they are a bit $$$ these days, even at the current price, 5 seasons worth is under $200 a year.
lordhowe
lordhowe

NSW

209 posts

5 Nov 2009 10:27pm
Just picked up a new NP 160-220 X9 from WSS. It is great NP added 10cm to the adjustment.

Very happy, have been having increasing problems with booms not adjusting correctly. i guess everybody knows what it's like when you're stinging to get on the water and you're having boom 'issues'. tested the new boom today and it is tres choice! It feels rock solid and it will do sails up to 8m, gotta love the new clue cut out thang.
If i had gone for one of these 10 years ago, I reckon I would have saved a bit when I look back and think how many booms I've bought over the years.
Rob11
Rob11

240 posts

6 Nov 2009 4:09am
Select to expand quote
westozwind said...

Check out the pix from the PWA, even the non Pryde sponsored slalom guys use em in droves.
Many wave sailors too.


Mauisails carbon booms as well, state of the art. Kevin Pritchard went to buy some after he left MS...
Bayblaster
Bayblaster

VIC

122 posts

29 Nov 2009 4:08pm
Anyone know if Aeron booms are available in Melbourne, either locally or online?
windgeorge
windgeorge

WA

108 posts

29 Nov 2009 6:35pm
ring tim at gspotxtreme in gero he has them in stock 08 99655577
pepe47
pepe47

WA

1382 posts

1 Dec 2009 11:30am
Select to expand quote
lordhowe said...

Just picked up a new NP 160-220 X9 from WSS. It is great NP added 10cm to the adjustment.

Very happy, have been having increasing problems with booms not adjusting correctly. i guess everybody knows what it's like when you're stinging to get on the water and you're having boom 'issues'. tested the new boom today and it is tres choice! It feels rock solid and it will do sails up to 8m, gotta love the new clue cut out thang.
If i had gone for one of these 10 years ago, I reckon I would have saved a bit when I look back and think how many booms I've bought over the years.



Bought the exact same boom and can't recommend it enough...more comfortable which allows me to hang off it longer.
After a bit of discussion found the diameter to be the same but the grip altered. Works for me
Haggar
Haggar

QLD

1670 posts

18 Dec 2009 12:20am
Has anybody tried the Loft Carbon Booms ??

I want a carbon boom, thinking
- unifibre
- Loft
- NP
vando
vando

QLD

3418 posts

18 Dec 2009 9:50am
Hi Haggar, Ive had my Loft Carbon 18 months now thats prob the longest Ive owned a boom for.
I certainly recommend carbon booms for sails >7.5
Rob11
Rob11

240 posts

18 Dec 2009 8:00am
Select to expand quote
Haggar said...

Has anybody tried the Loft Carbon Booms ??

I want a carbon boom, thinking
- unifibre
- Loft
- NP


Not sure what your budget is but you go from one extreme (Loft) to the other (NP) in terms in prices!!

I'd add Mauisails to your list.
windgeorge
windgeorge

WA

108 posts

18 Dec 2009 9:46am
gsotxtreme has one left simmer 100% carbon 26mm grip wave boom $790
Haggar
Haggar

QLD

1670 posts

18 Dec 2009 12:26pm
Yeah Rob, I really cant see myself buying a NP boom new, but at times there are some used ones around that have had little use, offcourse you cant be sure how they have been treated.

Has anybody got ant feedback on the KA Carbon 162 to 222 boom ?? Retails for
$690

The boom I broke was a Loft Alu 145 to 205. My other Loft boom is a Alu 205 to 265, so I will need two booms in time. A problem is also low stock at the mo and some vendors have changed their sizing to be smaller.
Gestalt
Gestalt

QLD

14722 posts

18 Dec 2009 12:41pm
i've got KA carbon booms.

have the wide tail carbon boom in similar size to the one you are looking at plus a carbon wave.

like them. had them a long time now. only thing have had happen is a 2 pin arm clip needed replacing after a couple of years. i got some more no problems.

grab me next time i see you and i'll show you them.
Haggar
Haggar

QLD

1670 posts

18 Dec 2009 1:52pm
Select to expand quote
Gestalt said...

i've got KA carbon booms.

have the wide tail carbon boom in similar size to the one you are looking at plus a carbon wave.

like them. had them a long time now. only thing have had happen is a 2 pin arm clip needed replacing after a couple of years. i got some more no problems.

grab me next time i see you and i'll show you them.


Gesty, do you have the 60% or 100% carbon models ??
Brent in Qld
Brent in Qld

WA

1410 posts

19 Dec 2009 1:48pm
Brought a Chinook full carbon in WA in 2000, sailed there for another 2 seasons and have sailed most waves around Aus since. Live in Qld now, not as consistant as WA for wind but good waves to work you just the same. Have only ever used this boom in the last 9yrs and have only just replace the adjustment pins last week ($40 from Stu Bell), I replace the ropes once a season and that's it. I've been through 5-6 masts and trashed 3-4 sails in the same period. I have an X6 as a spare, seems nice enough but the Chinook speaks for itself.
Go into debt and get full carbon Chinook from Stuart Bell in WA!!
Gestalt
Gestalt

QLD

14722 posts

20 Dec 2009 1:56am
Not sure haggar,

i bought it prob around 2005 or earlier before they started selling 60% and 100%.
sailpilot
sailpilot

QLD

787 posts

20 Dec 2009 10:29pm
Hey Gesty, whats the deal with the wide tail girls....ah I mean booms, is it just to prevent sail chafe on the arms ? I'm looking for a newie next month too.
Gestalt
Gestalt

QLD

14722 posts

20 Dec 2009 11:41pm
seems they are stiffer. don't know why though.

also allows more draft in the sail without rubbing on the boom but for me it's about stiffies
nebbian
nebbian

WA

6277 posts

20 Dec 2009 10:59pm
Had an interesting chat with Paul at Hydrodynamix on the weekend:

It seems that some so-called 'monocoque' carbon booms are anything but. The straight sections in the arm are tube section that is made separately to the rounded part. So a cheap carbon boom is actually made in three parts -- the front rounded section, and the two straight ends, which are joined together. If you know where to look you can see the join underneath the grip. Both my carbon booms are of this construction

Apparently the more expensive carbon booms are made in a true monocoque process, so it's perhaps stronger. I think that the Pryde X9 is made this way. Certainly the X9's seem popular with the PWA crew... I guess the proof is in the breaking, or more importantly, the not breaking.
evets
evets

WA

685 posts

24 Dec 2009 7:55am
That is useful info Nebs, I generally am happy to pay more for a product when you get a better product by doing so rather than making a biger profit for the vendor. Any problems apparent with your non monocoque carbon booms?
geoITA
geoITA

201 posts

27 Dec 2009 1:21am
The only 1 think I feel to tell to anyone going to purchase a new boom is, be sure to have a good look to a Maui Sails carbon boom before.
Haggar
Haggar

QLD

1670 posts

28 Dec 2009 7:47pm
I ended up getting an 160 to 210 X9 as there is so much good feedback about them, and I got such a good price from SCS. Cant wait to use
nebbian
nebbian

WA

6277 posts

28 Dec 2009 6:24pm
Select to expand quote
evets said...

That is useful info Nebs, I generally am happy to pay more for a product when you get a better product by doing so rather than making a biger profit for the vendor. Any problems apparent with your non monocoque carbon booms?


None as yet, apart from the slimline making my forearms pump up like crazy... but now that's all sorted (thanks Paul) I haven't had any issues at all

I think that once you're past the catapult every session stage, booms should last a fair bit longer.
Gestalt
Gestalt

QLD

14722 posts

28 Dec 2009 8:56pm
hmm, i doubt the pwa guys use a particular boom because it does or doesn't break. they would use a boom which is the stiffest.

in my experience pros don't really care to much about breakage up until they break everything.

i looked into the wide tail thingo, you will find that most wide tail booms are mono. it's the narrow tail ones where the joints occur,

monocoque is usually wide tail and is stiffer.

typically that is.
Haggar
Haggar

QLD

1670 posts

28 Dec 2009 9:21pm
Select to expand quote
Gestalt said...

hmm, i doubt the pwa guys use a particular boom because it does or doesn't break. they would use a boom which is the stiffest.

in my experience pros don't really care to much about breakage up until they break everything.

i looked into the wide tail thingo, you will find that most wide tail booms are mono. it's the narrow tail ones where the joints occur,

monocoque is usually wide tail and is stiffer.

typically that is.


Maybe but you wont win a slalom race if your boom breaks

NotWal
NotWal

QLD

7435 posts

28 Dec 2009 11:33pm
Select to expand quote
sausage said...

Paul Kelf definately knows what he's talking about. Snapped a brand new monocoque aluminium boom this afternoon and it hadn't once been put under crash conditions. First and last mono ali I'll be purchasing.

Sorry, no brand name as I don't want to be seen as one of those brand bashers. Actually I'll try to upgrade to said brand's mono carbon. First the warranty issue though.


Definitely not a brand basher, but not much help either. Seriously, bad design deserves to be outed I'm sure you would agree.
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