I think I will have to stiffen the bottom section of the mini mast, looks like it bending to soon

Well not befor Time either Chook. I was beginning to think that thing was an Urban Myth Shoot still time for that an all.[}:)]
Ron

Glenn
I have used the back of the seat for 4 years and never had a problem.

aus230 said...

Started to lay up a couple more 26" x 95mm wheels today. Thought I would try polyester resin this time. Hate the stuff but will persevere. Probably OK when the weather gets warmer, but on this occasion I had to fire up the shed wood heater to get it to go off. I want to have 3 sets at Lefroy to test different combinations.

95mm wide fitted with black floyd 3.8"
95mm wide fitted with maxxis hookworms 2.5mm
50mm wide fitted with maxxis hookworms 2.5mm, also have a set of 39mm wide fitted with kendra tires

Vic , I recently replaced my old scales with digital ones, and now my measuring of resin / catalyst is really accurate. the resin from our supplier cures really well even down below 10degrees.
Im tending to do more of the fiddly stuff with peices of cloth rather than chopped matt, and this is also Making things easier

Chook2 said...
Is she pretty Vic????

The lady in the house across the road, that the telescope is aimed at.

Ha-ha, it looks fantastic mate and finished to your usual perfection.
You're a very hard act to follow and I guess I'll be doing a lot of following at Lefroy, by the looks of that beauty.

I'm toying with the idea of building a mini 5.6. The boat in the picture is very cool (AUS 230). I have a few questions if anyone wishes to chime in.
1) I was wondering what ratio of length to width is best for wheel base?
2) How to you know where to place the rig for and aft.
3) Is sheeting behind the seat superior than in front?
4) I weigh about 75 kg what size sail would be needed in 5 to 15 mph winds? 15 and above?
5)Mast ht?
6) How is the sail downhauled on the AUS 230?
Thanks
John

I'm toying with the idea of building a mini 5.6. The boat in the picture is very cool (AUS 230). I have a few questions if anyone wishes to chime in.
1) I was wondering what ratio of length to width is best for wheel base?
2) How to you know where to place the rig for and aft.
3) Is sheeting behind the seat superior than in front?
4) I weigh about 75 kg what size sail would be needed in 5 to 15 mph winds? 15 and above?
5)Mast ht?
6) How is the sail downhauled on the AUS 230?
Thanks
John

Hi John,
AUS230 is built to the same specs as the Lefroy mini. As Ron says that is probably the best option if you have not had a lot of building experience.(the Lefroy sails real nice)
But to answer your Questions.
Wheel base
Fits the 5.6m rope rule(same as the Lefroy mini)
Mast height.
Depends on sail, 4.5 mt sail would be about right for your weight.
Down haul
aus230 has double down haul at the back and triple at the front.(Lefroy mini has double at front and back)
Sheeting
I prefer center sheeting but the mini is smaller than the class5 so I had to go front and back on the mini it works well.
As I built the mini for racing there are a few variations on the LFM
AUS230 has adjustable mast rake for and aft.
It is a y frame mini.
It has Clemco's steering (push not rotating) so that I could reduce the frontal area.
Cheers
aus230

At the top of the construction page.

www.seabreeze.com.au/forums/Land-Yacht-Sailing/Construction/Build-a-Landyacht-Lake-Lefroy-Mini-Yacht/

aus230 said...
The Lefroy weekend is over. Had a chance to find out how the changes that I made over the last few months worked out.
1.Moving the mast post back to 1350mm from center of back axle.
The yacht felt a lot more balanced and was not pushing the front around. Excellent change.(thanks Patrick)
2. Fitting a mountain bike shock to the front of the mast post.
I am glad I tried this as the yacht felt very smooth and no vibrations were felt from the front wheel, The front wheel did not have side slippage in fast tight turns.
3. Out haul adjuster.
This worked great.
4. Different size wheels and tires.
I did not find any advantage in using wider tires at Lefroy, The standard 50mm wide rims that I first made fitted with maxxis hookworms are what I will be using there in future.
6. Not using a rowlock(cut it off at Lefroy)
Found an advantage doing this when the wind was light. Did not like it when the wind was up. I will be fitting it again.
7. The 4.5m airtrack sail was excellent in strong winds.
8. The changes I made to the mini yacht
Clems steering was great(thanks Clem) and enclosing the front worked out great,I can not believe how good this little yacht felt and handled
The only change I will make now to the mini is to shave the rear tires.
Cheers
AUS230

Its intersesting eh Vic, I moved my mast back and felt it was better, you moved forward.
Im loving my 16"x50mm rim on the front instead of the 400x8 or the 20" x 1.75
I felt happiest with the 75mm rims on the back , but managed quite happily to sail a lap and pass a yacht running a 26"x 32mm rear wheel on 1 side.
yet travis whooped us bothon 20" rims
the 75'S were the better rim for tyre wear.

the tyre on the left was on a 75mm wide rim and the wear patch is about 50mm wide ,but the tyre stipples are still visible. the tyre on the right was on a 50mm rim and had a contact patch of about 25mm, almost all on 1 side of the centreline. it also polished down past the stipples.
all this from 100kms of sailing
it was also possible to run the 75mm rim at lowere pressure.
the sliding on the 50mm rim was noticable as it took the brunt of the slide at the bottom turn of the course, but made the powerslide at that mark much more attainable