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Buggy Wheel Covers - Disc Wheels


igeighty

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Thinking about a graphic for wheel covers, spirals where the first hing that came to my mind, but what about a Benham disc ?

Screen Shot 2016-06-28 at 9.52.03 PM.jpg340x.gif

the faster it spins the stranger the effect :)

 

Bugger, the second picture is an animated gif, doesn't seem to play,

this web site has a small applet that you can control the speed of the disc and see its effect...

http://www.michaelbach.de/ot/col-Benham/index.html

edit ..

ahh well it does play i just had to wait, now i have to build a real disc and see how the colours appear.

This site has a flash applet that seems to have a bit better control of speed. interesting effects. i will have to do some calculation to see how fast i need to go to get the true strobe effect :) http://lite.bu.edu/vision-flash10/applets/Color/Benham/Benham4.html

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G'Day joel, this is a photo from Daves end. ill be able to tell for sure on monday or tuesday when they arrive ill give them a good licking.

I am also hoping that the landsegler is a vinyl that can be removed and not a screen print. although i did have in mind to have some vinyls printed if i did go down the graphics route. As black texta spirals always look a bit tits.

Martin from GT did say that kenda tyres where used. 

looking at popeyes photos, http://popeyethewelder.com/sponsors/landsegler-the-real-deal i only see 'kenda' also. can't read any sizes. 

martin told me to look for schwinn stingray rears, but all i find from them are 20 x 4 1/4. 

UL Discwheel 20″ Vers. BEACH – (they will not corrode with salt water!)
light-alloy rim, double-walled, anodized, 16″-100mm wide
36 spokes, stainless steel, 3mm/2,6mm, straight flat head 6mm 
light-alloy hub, flange 60mm, ball bearings 6004 – 42/20/12 mm
between ball baerings the inner distance bushes are made from stainless steel 
tire 20″-4 1/4″ (nomenclature bicycle) outer diameter about 560mm (22″), about 100mm (4″) wide
Those wheels withstand massive lateral forces

weighs only ~4 kgs (8.8 lb), little bit variation depending on choice of the tire
(wheel without tire: ~2,8 kg, tire: ~0,9 kg,  cover discs: ~0,3 kg => ~4 kg)

 

so i reckon the schwinn tyres would fit....

anyway, ill let you know the kinda size when they arrive :)

 

 

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Don't panic too much about the width Dougie. You will still run your beach racers on soft going.

Motorbike tyres defeat the whole purpose for our needs as they are way to firm and designed to carry much more weight and a higher highway speed rating. They weigh 3 or 4 times that of a push bike tyre too.

On firmer surfaces, we run all sorts of push bike tyres on much wider rims than they are designed for. We stretch Maxxis Hookworms 1.95" out to 89mm wide rims without any trouble at all. They will just have a slightly lower overall height.  https://www.velogear.com.au/bike-parts/bike-tyres/20-tyres/maxxis-hookworm-bmx-tyre.html    These work really well on Lake Lefroy but the lakes surface is really aggressive and does wear them out. We are pushing these tyres MUCH harder than would be possible in a buggy. Huge side loads in a yacht. 

By fitting them to a wider rim than designed for, all this does is give the tyre a more rounded profile and actually more grip area. You can lower the pressures down to 25-35psi as well and get a softer ride which allows the tyre side walls to flex more (because the tyre is now more rounded this doesn't have a detrimental effect) and to roll along over obstacles much more easily. If they flex too much just increase the pressure a bit to suit.

A few guys are using "heavy duty" motorbike tubes in these wider rims, but this defeats the purpose of having a soft sidewall, as these motorbike tubes are very thick. The fatbike tubes work better but have a stupid "Presto" valve on them. We put adapters on them to convert them over to a "Schrader" valve and use a standard tyre inflating chuck to inflate them.

http://www.ebay.com.au/itm/5-X-Brass-Presta-to-Schrader-Bike-Bicycle-Pump-Valve-Adapter-Converter-Connector-/131648841141?var=&hash=item1ea6e1e5b5:m:m0fcbribUyrk4XPupEOKqJQ

These look good mate. https://www.velogear.com.au/bike-parts/bike-tyres/20-tyres/maxxis-miracle-bmx-tyre.html

It's nice to try and get as many threads per inch in a casing as it is much more flexible. We aim for 120 per inch in our 26" x 4" but sometimes that is not possible. Even 60 per inch in a bike tyre is fine as their casings are that much thinner to start with. 

Kelvar or wire beads don't seem to matter too much, but the wire ones do let go, as each wire is only overlapped 50mm or so, ends not welded where they overlap and all the joins (many in each sides bead) are all in the one spot. In the hot weather with high pressures (over 55psi) we have had a few blow out when racing yachts at high speeds. Had some Kevlar beads pop off the rim too, but that was because the tyre pressure was too low. 12psi to smooth out the potholes in the hard salt and try and get more traction.:blush2:

Here are 26" x 1.9" Maxxis Hookworms, stretched out over an 89mm wide rim on Greg's yacht.

P1050624.JPG

 

 

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Thank you for the information @Chook, i will get some extra tires as spares, so i am not left standing when (if) i pop one :)

maxxis make a great tire, i have them on my downhill bikes. and speed rating won't be an issue considering the pace you set in yours on two wheels.

thanks for sharing your knowledge mate, i know it comes from a vast wealth of experience.

have a good one, i am off to draw a cock on the ballot paper :)

 

regards.

Doug

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They wont let you down when inflated correctly.

When fitted to a wider rim it puts the beads under much more strain so just don't go anywhere near (almost 1/3)  the Maxxis recommended pressures and you will be fine. 

 

11 minutes ago, igeighty said:

have a good one, i am off to draw a cock on the ballot paper :)

regards.

Doug

You idiot!!!!! Love it.:clapping:

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Turns out i couldn't draw a dick anonymously, as i had to enrol on the day because i wasn't on the role :) my vote went into an envelope with my name on it.

I will be interested to see how many people will put derryn hinch first, given that he was in position number one on the major paper.

looking over peoples shoulders i did see quite a few writing 1,2,3,4,5,6 across the top of the white paper.

the pirate party was a good one, if elected free VPN's and tor clients for everyone :)

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Doug's new wheels gave us a good excuse to drive to MCA Motorcycle Accessories Superstore in Dandenong to look at UFO mud guards. Whilst there, he spotted some very shiny Arlen Ness Aluminium Crome plated wheels at $800 per wheel!

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Not cheaper wheels at this store. However at the bike wreckers the gsx Suzuki wheels are about 50$ each although they weigh a ton. There is a bloke on kite crowd selling a set of Suzuki wheels I didn't buy them as the weight would be much heavier than my kendas. The landsegler with tyre weighs 4 kg. The sysmic like Joel's is the cheapest alternative. The wheels in the picture above where about 9 kilo each and the motorcycle tire adds another 4kg I'd estimate.

http://forum.kitecrowd.com/sale/set-18-gsx-wheels-251898.html

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A box arrived on my doorstep this morning, Thanks Dave Hobbs. and thanks @.Joel for pointing me in his direction.

Wheels weigh a tad over 4kg each with tyres. they have Kenda 20 x 4 1/4 rubber on them. plastic discs are connected using nylon 10mm 'bolts' with black nylon spacers

IMG_0808.jpg

rims are incredibly solid with no shake or rattle in the spokes. very similar to highly strung motorcycle wheels

IMG_0801.jpg

 

IMG_0802.jpg

discs use nylon 'bolts' with black spacers to secure them. 

IMG_0804.jpg

slightly taller than the kinda beach racer on sysmic rim.

IMG_0807.jpg

the stubs that come with the GT (the ones i used with the sysmic rims) leave 26mm of thread to screw into the rear axle.

IMG_0809.jpg

The thread in the axle of the GT is 25mm deep. i am hoping that this will be enough thread to keep the wheels on the rear. what do you guys think ? or should i get some new stubs.

A metre of stainless M20 threaded bar is about 30$ for piece of mind i think i will end up grabbing some and getting it cut and thread cleaned up.

As they are now, when firmly tightened the stubs are using all of the available thread in the axle.

IMG_0812.jpg

Hubs on the landsegler wheels are 120mm from outside edge of bearings

IMG_0813.jpg

Sysmic rims have outside distance of approx 62mm

IMG_0814.jpg

 

todo -- 

 - new front fork to suit, making sure it is has longer legs than the bigfoot front. (easier to swap out the disks for bigfoots rather than use the one fork)

 - possibly new longer stubs

 - put pretty pictures on the discs (or not)

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I keep a length of gal 20mm threaded rod in my shed and if I need a stub axle for something, I just cut to length with a hacksaw and run a file around the edge.  A quick spray of Zinc-it on the cut end and voila, done.  I use Nylocks on the outside.  Can't say that I've taken them off the Vmax or Vermin for a couple of years, but I did give them a dip in some linseed oil before I tightened them into place so they shouldn't seize.........touch wood.....

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The Hacksaw and file method should be fine for the thread, i was probably over thinking it when needing to have a 20mm die passed over it.

as it is though. 25mm of thread in use i 'think' will be ok, as there is only 25mm of thread inside the axle. maybe :)

IMG_0815.jpg

IMG_0816.jpg

 

they don't taste any different from the beach racers :)

IMG_0817.jpg

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