I am making some 26 inch wheels 80 mm wide rims and have some maxxis 26x2.5 tyres for them and am wondering what tubes to fit in them Anyone got any advice?
just get motrbike tubes. fatter and take low pressures better . also have threaded valve stemms ,so are easier to inflate
What do you want fat tyres for Clem? Your wheels hardly touch the beach anyway!
I have already fitted motorbike 21 inch tubes this morning they fit great but would be heavier than the Maxxis I think
The wheels all up weight is just over 5kg I kg heavier than my old skinny wheels but nearly all the extra weight is in the tyres and tubes
the bare wheel weight is about the same
Hope to try them out at Ohope next week if my back comes right that is
Here is the result of my efforts this is the first one done so far with land yachts easypeasy method
5kg all up weight
Select to expand quotelandyacht said..
just get motrbike tubes. fatter and take low pressures better . also have threaded valve stemms ,so are easier to inflate
forgot to mention , theys cheaper than bike tyres too . downhillmtb are lighter but more expensive
Im still seeing alloy bearing housings
You are right I used alloy bearing housings made from scaffold tube This system has been used for some time here with no failures that I am aware of
I used the spoke design that has been Ok as well the same as my old skinny wheels 10 x15mm polyurethane foam covered with a top hat of
carbon and glass fibre 5 spokes instead of 4 last time
I have used up all the carbon I managed to scrounge now from a local boatbuilder some years ago 
I guess I should be barred from calling them landy's easypeasy wheels I did use your method for the rims and discs though 
Your idea of using core flute for backing worked a treat no wonder it is so hard to glue 
The 21 inch motorbike tubes fit well and should be bullet proof and yes they are cheaper and have better valve stems too
Select to expand quoteHiko said..
You are right I used alloy bearing housings made from scaffold tube This system has been used for some time here with no failures that I am aware of
I used the spoke design that has been Ok as well the same as my old skinny wheels 10 x15mm polyurethane foam covered with a top hat of
carbon and glass fibre 5 spokes instead of 4 last time
I have used up all the carbon I managed to scrounge now from a local boatbuilder some years ago
I guess I should be barred from calling them landy's easypeasy wheels I did use your method for the rims and discs though
Your idea of using core flute for backing worked a treat no wonder it is so hard to glue
The 21 inch motorbike tubes fit well and should be bullet proof and yes they are cheaper and have better valve stems too
what kind of build time would you say per wheel.? i do like the foam/carbon combo for the spokes
I don't know how many hours per wheel I haven't kept count The answer would probably be too scary
I am happy with the result so far but I have a few ideas for streamlining both the time to build and the weight
I may try them out on a 20 inch front wheel but I need to test these wheels first Hopefully in the next week or two
The changes will be in the rim area I am happy with the bearing housings ,hubs ,discs and spokes
Will let you know if it seems like a worthwhile thing to do
Hiko
Great job, I think you will find them more than strong enough. I use no carbon in mine and the spokes are made out of one layer of 4.5 glass(not woven) as they are not in shear they are more that strong enough. (have not had a failure yet) although I use 8 spokes. I can build 2 wheels over a weekend.
www.seabreeze.com.au/forums/Land-Yacht-Sailing/Construction/Fat-wheel-rims-from-China/#1566921
Cheers
Vic
Bit more info on how I made mine Hiko
www.seabreeze.com.au/forums/Land-Yacht-Sailing/Construction/My-New-26-Carbon-Fiber-Land-Yacht-Wheel-Video/#1244482
Select to expand quoteaus230 said..
Bit more info on how I made mine Hiko
www.seabreeze.com.au/forums/Land-Yacht-Sailing/Construction/My-New-26-Carbon-Fiber-Land-Yacht-Wheel-Video/#1244482
sorry to hear abot the fail hiko.
did you have some riveted alloy strips bridging the rim halves?
Yes there were 5 to position the rims but a full strip the way Aus 230 did his seems necessary in hindsight
The epoxy /Aluminium bond wasn't good enough in my case I thought I had prepared it well ,coarse sanding the surfaces and acetone cleaning etc just before bonding
Oh well lesson learned so not all bad
cheers
Hiko
Greg is showing me how to use carbon fibre as we make some 4" wheels.
I'm struggling to understand the strength this stuff can achieve as a "steel person". Massive strength!!!.
The rims edges were originally sanded with a very coarse flap wheel.
Then coated with epoxy and sanded again with high quality 80grit, till it all turned a dull grey within the epoxy mix.
The alloy won't oxidize (as it does in seconds) under the epoxy.
The skin was then just placed over the wet grey slurry and clamped down gently.
9 carbon reinforced spokes on a 26"x 4" wheel as I'm a fat fella.
Also we get hoons leaving deep wheel ruts across our softer lake that hit real hard when they dry out.
