Ideas for Improving the Top section

#41
Ok, I have the advantage of getting to hold a composite top section in my hands and even go sailing with it. What I see is the choice between something that looks like it has the ability to solve all the problems with the aluminum spars (variability, lifetime, permanent bending, etc.) versus continuing to try to band aid solutions onto something that was never intended to be used as it is today.
well there's the solution then. Ditch the Laser from the Olympics, put it back in it's place of weekend knockabout.

Gee I feel much better. What class shall I move into?
 
Thread starter #44
If the new composite top gets introduced in the near future, I should still be able to use my old aluminium top and race it at international regattas.
If that composite top is softer, or in any other way inferior to the old aluminum top for a heavy sailor, then what??....
Will all new Lasers then be equipped with a composite top?
Will it be illegal to use an aluminium top on new boats delivered with the new mast top?

To supply an new mast top that is softer than the old one is not logic because the average weight of the general population is on the increase.

The Taser class is a good example of well managed change in a strictly one design environment - although it might cost a few dollars to stay competitive. They changed to a cheaper and better Mylar sail and at the same time increased the sail area slightly because of the above argument of weight increase in the general population.
 
R

Ross B

Guest
#46
If the new composite top gets introduced in the near future, I should still be able to use my old aluminium top and race it at international regattas.
If that composite top is softer, or in any other way inferior to the old aluminum top for a heavy sailor, then what??....
Will all new Lasers then be equipped with a composite top?
Will it be illegal to use an aluminium top on new boats delivered with the new mast top?

To supply an new mast top that is softer than the old one is not logic because the average weight of the general population is on the increase.

The Taser class is a good example of well managed change in a strictly one design environment - although it might cost a few dollars to stay competitive. They changed to a cheaper and better Mylar sail and at the same time increased the sail area slightly because of the above argument of weight increase in the general population.
the composite top section is for the LIGHT sailors, because it is softer
 
#50
Clive,
I'll have to look at the can tomorrow at work. It is an aviation adhesive, specifically designed to glue either plastic or aluminum to aluminum.
Pretty sure it's a PPG product, a 2 part contact cement. I'll post it tomorrow.
Ross,
yes it's simply glued on, no rivet.
 
R

Ross B

Guest
#51
gotta be a rule against that..

still pretty cool though, care to share some next time I'm up at ABYC?
 
#54
Dunno where you'd get a top section that hadn't already been riveted here. The store has them already made up, in nice little triangular boxes...with a rivet through the top ring.

As far as I know, and I could be wrong, there is only two places you can get a laser top section here, one store in the North Island, one in the South, and they're different branches of the same store.
 
#55
SFBayLaser; said:
I agree that adopting these composite spars for the Laser Standard is problematic in that the spar is more flexible than the aluminum uppers (and, again, at 90kg I'm not looking for something that reduces my competitiveness).
So if they did allow the composite spar for the Standard rig, too, would it close that weight gap between when you're too heavy to race a Radial and too light to race a full rig? (165-170lbs/75-77k) How light could one be and still be competitive in a full rig in a decent breeze with this spar?
 

Merrily

Administrator
#56
So if they did allow the composite spar for the Standard rig, too, would it close that weight gap between when you're too heavy to race a Radial and too light to race a full rig? (165-170lbs/75-77k) How light could one be and still be competitive in a full rig in a decent breeze with this spar?
That's a question not yet answered. When I tried the composite spar at St Francis YC this past summer, I asked Tracy if it could be used for the standard rig. He said that they are not even supposed to try it that way, that it is only for the radial. So there hasn't been any testing with the standard rig, or if there has been, in my opinion, it's been under the radar.
 
#57
Being right in that point between radial and standard (68 Kg) I would be keen on a composite top section for the standard. But I guess everything cannot happen at once. also, if there are differences in performance (bound to be really) then it would just be creating yet another variant. also, I can (probably will) but a radial rig and just use that when conditions dictate.


Ian
 
#58
One question re: the sail (that I will be embarrassed if it has been raised already as I did have a look back). Does the composite top section use the same sail or does the sail have a different cut ?

Ian
 

Merrily

Administrator
#59
One question re: the sail (that I will be embarrassed if it has been raised already as I did have a look back). Does the composite top section use the same sail or does the sail have a different cut ?

Ian
I used my Radial sail with it, along with my own Radial lower section.
 
#60
"gotta be a rule against that.." Ross B referring to a "glued" sleeve. I though this would be a correct assumption, based on "if it doesn't say you can do it, you can't".

But, I thought I'd look here:

http://www.laserinternational.org/rules/rules07.pdf

26 (c)

Preventative maintenance shall include the
replacement of fastenings with alternatives and
the reversing of spars provided that the fittings
are replaced in accordance with the Measurement
Diagrams...


Yikes, that's pretty clear. So, that rivet and hole can be gone, if we reverse the top, and we don't even have to wait til it bends, as it can be a preventative measure. I assume if we find the superglue, say 5200 or better, that once glued, it's permanent, and there ain't gonna be no more end-for-ending possible....

Al "MTR" R
 
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