Before I start , the mini magic known as NAPPY RUSH is not, has not been and never will be a TROLLY!!!!!!!!!'
moving on I assume the steel your refering to is the square galv.
the outer size is 35x35, the inner is 30 x30, 2mm wall youll need a bit of 25x25 inside that at the joints if you plan on doing any serious racing, or running over blokarts.Performance wise , it will only keep up with a class 5 at this stage, maybe the bigger rear wheels will be the breakthrough
that Y angle is 45degrees whichjust makes things easier to cut and measure. I have no toe in or out built in.when building I had to shut one of the shed doors as the wind would blow the bare chassis out the other door
This is not a design for a beginner or a BIG lad as if you hit something it will bend those rear axles. . Ive since sold the yacht, as I felt the mast step was a bit too far back, resulting in a degree of uncontrolability when sailing downwind on Lake walyungups gravelly surface. next version will hopefully correct that.
Please be true to the mini specs and dont be temped to go longer or wider, you'll be glad you didnt, as they are little crackers to sail

Thanks for that info Landyacht. It was a bit difficult to guess the steel sizes looking at the pictures. Sorry about the "trolly" reference, that's what we call the frame part over here. What was the total weight ot the yacht fully rigged? Are you building another one?

Hi, I have done a search looking for mini magic, with the only result being this topic, HELP!!!
As regards Clem and weight, it's not only the yacht will blow out the garage door, when he stands sideways he gets lost behind power poles! Sorry Clem,!
The trolly label is a Clemco original!

Gizmo said...

Here is the thread for "Nappy Rush"
www.seabreeze.com.au/forums/topic.asp?TOPIC_ID=43555

no mention of measurements ?

30x30 SHS only comes in 1.6 wall thickness according to my latest Steel & Tube handbook. Would this size fit neatly between a 25x25 and a 35x35x2.0 ??? Does on paper.
By the way I may be small, but can be very fast! I have been building and sailing landyachts for nearly 20yrs.

I realised that, yes you are right. Steel size does vary depending on where it has come from. I might stick to tube anyway. A Y frame "TROLLY" with big wheels will need to have some camber and tracking adjustment built in like our OTTs.

Question about the Mini Nappy Rush Y yacht. It is a great design. I love it!
But "Mini Magic" sounds much better don't you think?
My question for the designer and the the test pilots who have sailed it.
Was that backrest strong enough to support the rear sheeting or were you compensating with your body weight to hold it down? I could imagine getting hit by a gust and the sail getting fuller as you got lifted with the seat. That would be scary. Does that backrest need to be any stronger? or was it ok?

I've found all these bits for my new mini. Most of them are left over from the first class five I built 20yrs ago. I will post my plan up soon as I work out the steel sizes. I will do most of it in tube appart from the backrest. Landyachts Nappy seat looks to be the best idea.

dam, maybe I will have to think about building one of these things myself, last thing I need is another project. But the room for expereminting is endless, wings ,wheels, shape ect.
Cheers
AUS230

Dang, I didnt realize you blokes had some of THOSE wheels left over,
I will have to get back into the shed as soon as the 5 and TP1's mini are done
Please stick to the dimensions, please!
with that chair you could fit a little chilli bun along one side

Hiko said...

Dont you mean an eeeeesky?

Nah, Paul reckons it will be cold and wet on Ohope so Clem will get a cold butt, but he's too polite, so he calls it "chilly bun" like the yanks!

Paul, you say "Please stick to the dimensios, please". What frigging dimensions, there aren't any!
Or are you referring to the overall unwritten "mini dimensions".
I can see where Clem is going with this, he will be trying to make the quickest mini and then the fun will have gone. Sorry Clem, not getting at you at all.
This is why I asked about some "rules".
Personally I think there should be a wheel restriction, and some limiting on the rig type,, hence my little comment about a wing, which nobody has reacted to!

kiwi307 said...
This is why I asked about some "rules".
Personally I think there should be a wheel restriction, and some limiting on the rig type,, hence my little comment about a wing, which nobody has reacted to!

These are exactly the comments that created the class6 rules over 25 years ago...

With class6 the wheels can vary in size, so if you go for large dia. wheels, you have to deal with a shorter wheel base and less stability but greater speed. Smaller wheels give a longer wheel base with greater stability but less speed.

2. Max length of 2.25m (to the outside of the wheels) excluding the seat
This is to level out some of the yachts, as many different wheels have been tried from small sack truck size to 20” BMX bike wheels.

6. Round section mast only, Of any material

7. NO sail fairings in or on the sail

Gizmo said...

kiwi307 said...
This is why I asked about some "rules".
Personally I think there should be a wheel restriction, and some limiting on the rig type,, hence my little comment about a wing, which nobody has reacted to!

These are exactly the comments that created the class6 rules over 25 years ago...

With class6 the wheels can vary in size, so if you go for large dia. wheels, you have to deal with a shorter wheel base and less stability but greater speed. Smaller wheels give a longer wheel base with greater stability but less speed.

2. Max length of 2.25m (to the outside of the wheels) excluding the seat
This is to level out some of the yachts, as many different wheels have been tried from small sack truck size to 20” BMX bike wheels.

6. Round section mast only, Of any material

7. NO sail fairings in or on the sail

Yes I see where this comes from, but are the class 6 rules being used?

kiwi307 said...

Yes I see where this comes from, but are the class 6 rules being used?

There has been some mention of changes which seemed to have occured under the cover of darkness by a group that doesn't want to be open and transparent.
My personal thought is untill there has been proper and true transparency, any existing rules MUST STILL APPLY and not changed by "chinese wispers" and then passed on by word of mouth.

I was unaware that NZ had class6 rules... how do these compare to Aus class6 rules?

Lake Lefroy Mini specs thread..
www.seabreeze.com.au/forums/topic.asp?TOPIC_ID=39791

As I keep saying, the lefroy mini specs are a length and width. We want to see just what is possible. If they turn into little wings that we get into via a hatch then so be it. early on we considered a sail size restriction, but then BLokart came out with a whopping 5.5m and then HYPERcarbon masts...................
So dont be shy with your experiments, If they havent been done, its because I havent had time to do them.
Please stop refering to it as a class 6 The reference in the specs we set said to take into account the ALSA cl 6 specs IF you intend to race in that class. those rules have changed 3 times since the lefroy mini specs were set, so we are not even trying to fit in.
In the end the very size of these little yacht means they are generally cheap and easy to build, we encourage recycling and the use of alternative materials, like deck chairs gravel bags, and wheeliie bin molds
I also encourage builders to make their yachts pack down as small and conveniently as possible , so that traveling without the assistance of a seacontainer becomes possible again.
so get out there and have fun again