Jump to content


teknologika

Member Since 23 May 2007
Offline Last Active Yesterday, 08:23 PM
*----

Posts I've Made

In Topic: Waszp vs. Moth

08 February 2017 - 07:48 AM

Waszp is still at least 2 years ahead of any of the potential opposition, with several hundred boats in the hands of owners and in many countries. So far none of the newer designs have started to deliver boats.

So what? World sailing could be made to look rather stupid choosing a youth design at the moment based on the fact one has delivered more boats to date. It would only be a relevant factor if the boats delivered were in the hands of youths, which there is little evidence of. Instead, WS should and I am sure will look at all the alternatives. The UFO seems to me to be far more suited to being a youth boat than the Waszp which is effectively a detuned Moth, even with the smaller rig option. The UFO is $3000 cheaper, it appears more robust, easier to learn on and about the same speed. It is being built by a family who have rather a good track record of scaling up to meet demand, so that isn't an issue.
 
The reality is that the lead that the Waszp has is worth no more than a few months.

+1 and nothing a ramped up manufacturer couldn't overtake.

In Topic: Waszp vs. Moth

03 February 2017 - 06:42 AM

Stepping away from intent of classes, (one design, one commercial owner vs open, multi supplier development class), to someone who has never sailed a moth, and is starting at the bottom of the learning curve both boats are, in essence, the same. 11 feet long, narrow skiffs. So the stability and manuverability are, in percentage terms very similar.

Waszp is a lot heavier. Stays hurt when you run into them so removing them is a good choice if you don't care about absolute performance.

If you compare the Waszp to the UFO you will get much bigger differences.

I would try both before you buy either, and don't rely on an Internet forum to make your buying choice if you are considering buying one.

If you are trolling and trying to start a flame war, please don't.

In Topic: Team NZ

12 January 2017 - 03:14 AM

 

We are talking VMG during a foiling tack versus a non foiling tack.

There id no doubt fouling is faster between tacks.

If you watch a foiling tack from above you will see the helmsman drive the boat quite deep to get the speed to maintain foiling thru the tack. Also the speed in an out of the tack is not that much better for the extra distance, time, and angle, away from th top mark, they sail.

It could be a close thing.


I don't agrree. the main reason is that if you don't foil tack you have to lose a huge amount of vmg to get up on foils after the tack,especially in light airs; or at least this is what really makes the difference in moths;it's not the speed difference during the manouvre, but he vmg loss to get back up on foil if u crash down.

 

 

 

So I once worked out based on GPS traces a couple of years ago that I was loosing 70-100M per tack (land, turn then get flying again) to our pace setter who sailed the whole race "dry". That translated to ~1/4 - 1/3 of a windward leg each lap. You then change your tactical thinking that it is better to minimise the loss and say, sail on a knock and loose 30 instead if tacking and loosing 80.

 

In the moth fleet, (outside the top 20%) your tacking ability is the main factor in your finishing position in most races. We are only doing 15-18 knots upwind, the AC boats last time out in low mode were doing 24s so the gain will be much bigger for them.

 

When you compare a "touch and go" tack to a fully flying one, the difference is much smaller, but still very obvious.


In Topic: Moth rig evolution & conclusions?

10 January 2017 - 11:27 PM

There have already been smaller super high modulus smaller masts (I have 35mm diameter one). To go smaller the wall thickness has to go up, and stiffness becomes a trade off. 40mm seems to be the weight / stiffness / cost / diameter sweet spot. I have gone back up to a stiffer 40mm mast and gone faster.

In Topic: Moth rig evolution & conclusions?

07 January 2017 - 08:23 PM

It is more about mast sail combination than diameter. There are many many different mast types and each has different bend characteristics. These are then matched to the sails desired fullness, luff round and skipper weight.

For example, the Lennon A3M is designed to be used with a CST Elite 22, or 23 depending on skipper weight and how hard you are prepared to pull on the vang and cunningham.

Any 50mm moth mast will be at least 5 years old, probably more and won't work with much beyond a MSL 12 (the bladerider X8 sail )