disk wheels

[buggy boy2002]

does anybody no if u can get disk wheel to fit the standard 15mm bolt, if u can has anybody got a web site or and prices, anyone ever tried modifiying BMX wheels or anything like that.

[MadAndy71]

15mm bolts???

 

Not sure of the bearing size but you need to know the OD of the bearing that will fit in the hub of the disk you are going to use and the ID for the bolt. Your case 15mm.

 

BXM wheels really aren't strong enough with the cross tortional forces that could be exerted.

[-McManus-]

I have a site for you but it is in Holland http://www.buggywielen.nl:)

[MadAndy71]

I have a site for you but it is in Holland http://www.buggywielen.nl:)

 

 

 

Thats where I got my stuff from. Dont know about the 15mm bolts though as I had 20mm.

 

If you need to speak to someone there, ask for Peter van Schie.

[stonemonkey]

I think you will get some people say you can get a top hat reducer to bring the 20mm down to 15 mm if you want .

 

I would advise against this as the bending moment on the bolt head is far greater than with barrows or even bigfoots .

 

you will likely snap the head off a 15mm bolt with discs ,

even 20mm bends with enough abuse

 

hope this is of some help

SM

[superfly777]

Also is it not essential to run disks with some camber, have never seen a buggy on disks without and sure there is a reason beside looking cool ? Would have thought so and should be a consideration before you buy?

[king_of_the_sky]

u run camber on discs to make the side ways forces go thru the spokes or solid rim in the libre cas if u run the with no camber u will almost definatly buckle them pretty quick, for the sdoggs danglies of discs contact wind welder he is the person who supplies the anonised spoked wheels drool!

[MadAndy71]

u run camber on discs to make the side ways forces go thru the spokes or solid rim in the libre cas if u run the with no camber u will almost definatly buckle them pretty quick, for the sdoggs danglies of discs contact wind welder he is the person who supplies the anonised spoked wheels drool!

 

 

Good disks but £200 a corner. That serious leauge needing serious funds for excellent kit!!

 

SM runs or used to run straight disks. He aint no pussy footer in the buggy and they seem to have help up OK.

[king_of_the_sky]

im pretty sure that in time u will buckle the discs run without camber as with camber it resolves the forces to act thru the wheel hub and bearings as it was designed

[king_of_the_sky]

when i asked about the spoked wheels wind welder said they started at 130 i think i mite be wrong

[MadAndy71]

when i asked about the spoked wheels wind welder said they started at 130 i think i mite be wrong

 

 

You may be right. The prices were on his site but for 1 of his very good wheels at the price you say, I got 3 from Holland in the libre style.

[hasbin acharlie]

the front wheel on my buggy pictured below in my signature uses a 15mm inner bearing hole! so i guess "yes" there are wheels that can. :D

 

 

As for BMX wheels i remember Stacey lewis tried them along time ago they worked great!

Untill he turned then the front wheel just folded under itself so im told.

I assume from his experience people forgot about that idea. :(

[kiting mad]

stacie told my dad to get mountain bike wheels

[buggy boy2002]

my buggy is homemade and complete with camber, would be no problem in knocking up another couple of brackets to suit the 20mm bolt, just guessing that the 15mm wheels would be that bit cheaper

[hasbin acharlie]

theres a certain type of mountain bike wheel that has very strengthend spokes and rim apparently, also there just legal for buggies to race, im not sure what they are?

[king_of_the_sky]

you could build up a strong enuf wheel i think, but you will be talking quite a bit of ££ seeing as a good 20mm bike hub is about 100 quid i think then get sun kevlar spokes of summing and a rim your gettin into almost as much as the ones wind welder sells

[Big G]

you could build up a strong enuf wheel i think, but you will be talking quite a bit of ££ seeing as a good 20mm bike hub is about 100 quid i think then get sun kevlar spokes of summing and a rim your gettin into almost as much as the ones wind welder sells

 

Which are Moto Cross side car wheel's

[wind welder]

Hi all,

 

There seems to be a load of incorrect info flying around about my disks and rules - SO!

 

Here's the facts, from the proverbial horses mouth!

 

King of the sky,

My cheapest wheel is £189 this wheel is front fitment only,(12mm spindle). It has a nylon hub with aluminium rings that the straight pull spokes attach to.

Rear/Front wheel with full alloy hub straight pull spokes and 20mm bore, start at £199

 

Big G,

You are partially correct, in as much as:-

The hubs only are from a moto-x outfit, these hubs normally run on 25mm spindles, so i have to have them converted to fit 20mm parakart axles.

Also the rim diameter and width are different to the sidecar wheels too!

 

hasbin acharlie

The only rules for racing regarding disk wheels are as far as i know are these:-

The wheel cannot be larger than 26 inches high including the tyre when inflated to 2 BAR pressure.

The spokes must be covered! (i am told there are some new regs regarding the gaps at the edge of these covers but have yet to hear or see anything officially)

As far as i am aware there are no issues or rules regarding strength!

 

 

"General info on disks" (my personal views only)

 

The wheels that i get made are designed to take massive side loads, both sudden impacts and sustained pressures. either mounted vertically or on a cambered axle!

 

Downhill mountain bike wheels (the strongest bicycle wheel you can get so i'm told) are only strong in one plane! IE- straight through the rim at 90 degrees to the axle, in any other direction they are very weak, because they do not need very much strength in other planes as any sudden or sustained pressure from these directions inevitably results in the bike and rider parting company.

 

Most Japanese light motorbike/commuter bike wheels (not sports bikes)use spindles of 15mm,

but then you have the eternal problem of 15mm being an engineering standard size for bearings but not for bolts!

(Get your axles converted to 20MM you know you want to, and you won't regret it honest!)

15mm bolts are Peter Lynn's attempt at world domination! ;-)

 

My wheels are expensive Sorry i cannot do much about that, But I actually belive they are the strongest and best product on the market.

And if you care to do a search for new SuperMoto/Supermotard wheels then you will see that my wheels are quite cheap! (yes i know super moto wheels have mountings for sprockets/disk rotors, but 90%+ of these hubs are made at the same factory where i get mine from) and my price is for a wheel ready to go,

 

Any way I'm off to bed, stonemonkey will be round later for his swan neck,bigfoot forks, and cambered axle! And i haven't finished them yet!

 

Cheers Trev.

AKA Wind Welder

07989 403806

trevor@catchfire.co.uk

[buggy boy2002]

if i was gonna convert to the 20mm axle, i would probibly buy the solid libre diskwheel mainly cause their cheaper, but my only concern is that the weigh a tonne although thats not a bad thing in some cases, wot do ppl prefer

 

heavy wheels or the lighter spoked wheels

[king_of_the_sky]

well i knew thay started at 100 summing ah i dream of they day i get those wheels....

[buggy boy2002]

if i had actually thought before i finished college, i could of made a set of wheels.

do u think its possible to make ur own hub on a CNC lathe, get a solid disk cut from sheet steel and join all to an existing BMX rim, so that standard tyres and tubes could be used.

although it would be hard to jig all before welding and make sure it runs straight and true

[wind welder]

Hi buggy boy2002,

 

If you have access to cnc lathes, then why don't you make a set of replacment hubs for Honda "comstar" type wheels, they are the ones pictured on the rear of the buggy in hasbin acharlie's signature.

 

The spokes are pressed steel and the rims are aluminium with a flange that the steel spokes are rivetted to. the hubs are bolted to the spokes with a weird triangular headed bolt which you would have to remove and replace with conventional bolts.

 

you would have to hunt around the bike breakers, because they are no longer fitted to bikes and they came in quite a few rim diameters and widths.

I would look for the wheel with biggest diameter and the narrowest rim,(the 19" tyres that i fit are getting quite scarce,17" are much easier to get)

 

But it should be possible to make a hub to take 20mm bearings using the original hub to program the lathe.

 

 

Hope this gives you some ideas

 

Cheers Trev.

[buggy boy2002]

i fancy taking on the challenge with a solid disk inside a bike rim, obviously u have more an engineering backround wot do u think. i think the idea is sound and should be easy to jig but when it comes to weld will the structure wamp much and would their be any way to counter act this

[stonemonkey]

I think it will be very hard ,if not impossible to weld bike rims to disc and keep them true.

 

 

this is why spokes are used or 2 pieces of pressed steel welded together ,

(or cast ally / bolt together ally aka split rims)

 

I think you will be on to a loser if you try .

 

just my opinion

 

I am sure trev will fill you in laters

[8015]

I'm fine with the hubs (why CNC? you could do it by hand if you had time), but the plate discs worry me slightly and I'm not sure why as it's basically what libre offer and many trailer and mini wheels are built like????

 

If you weld the disc into the rim how do you ensure the stresses are even throughout? With spoked wheels the process of tightening spokes on a truing jig ensures equalisation (well nearly), with libre and mini wheels the disc is pressed so the rims are made from the same plate - even stresses. If you start welding the disc to the rim you are going to induce all sorts of stresses as you go around, the whole thing is likely to warp as you go and the end result will have residual stresses distributed at random.

 

Here's a better idea, if you have access to a CNC mill, mill the entire wheels from a single block of material - I've seen on the telly how custom bike builders can get wheels made this way for mega bucks, you could cut costs by keeping to a plain design and doing it yourself!

 

It's probaby easier to buy motorbike wheels and make perspex covers to make them race legal! What if the bearing diameter is bigger than 20mm??? Use your lathe to make a bush with a 20mm inner diameter and outer diameter to fit the bearing - that isn't rocket science but it will work.

 

JIM