Onspot Automatic Tire Chains

[danwat1234]

The Bluebird school buses in Clackamas Oregon has them I think

[danwat1234]

Can I put this on my Honda Civic?

[glk001]

If a link breaks, it will break while under the tire, leaving it on the roadway and not flying out at anyone or thing...This system works very well and is required on all school buses in my town...A great invention and sorry for your loss jtorneback...

[Patman252]

I like how people are saying they don't work. Have you ever used them? They do work. They are not as good as real chains, but anything less than like 6 inches of snow and they work fine. And if you have a big truck with dual tires, you can run OnSpots on the inside wheel and put traditional chains on the outside wheel. Its a killer combination!

[petech667]

After see the motion, I think the chain may not last long in that rough situation~~

[maffysdad]

All very good, and a workable idea, but I wudn't wanna be the vehicle (or person) nearby when one the the chains broke off!... Jeeze, that WOULD hurt!!!... BADLY!!!...

[noskidable]

I hope that they could understand that points of the tire tread are to differ in loci on the road surface from these of trodden pieces in the devices like Onspot or Rotogrip.

[JanJanych]

It will not work. The chain works only when it is fixed from two parties of a tyre cover and tightened under a wheel with such force that digs snow and a dirt under it. Simply to throw something slippery and metal before a slipping wheel it is USELESS!

[JanJanych]

Лохотрон. Это НЕ будет работать. Цепь работает только тогда, когда она закреплена с двух сторон покрышки и затягивается под колесо с такой силой, что копает снег и грязь под ним. Просто подкинуть что-то скользкое и металлическое перед буксующим колесом БЕСПОЛЕЗНО!

[ChevyToughRebel]

Gees, so thats how they work! I always wondered how automatic tire chains could possibly work, how simple lol

[BusDriverStevo]

yes i take a crow bar or somthing and hit the chains if they dont back up into place lol

[noskidable]

Just look in the list of 188/4B in US Patent category, you'll find quite a few, based on a circular motion of the trodden pieces, similar to Onspot, let alone Putnam's. I'm not derogatory, but the problems in these are due to the ignorance of the effects of motion discrepancy between the tire tread and the trodden pieces. One is linear, but another is of cycloid. Therefore the serious vibration is inevitable, causing difficulties. Our device has solved these to be more effective and light.

[farmbro9]

@noskidable trust me, OnSpot is far superior...

[noskidable]

@farmbro9

Thank you for your comments.  I wonder if the motion discrepancy is properly understood. Above all the dynamic friction coefficient is much lower than the static one.

[liteglow2000]

almost every Ambulance car here have Onspot chains..

I want to build one to my car !! wonder if that is possible on a FWD car ?

[jgdogg441]

@liteglow2000 I wouldn't see why not. might take a bit of work though.

[BusDriverStevo]

the chains on my school bus wnt come back up when u retract them u have to hit them with a stick lol

[jgdogg441]

@BusDriverStevo hit chains underneath a moving bus with a stick? What?

[jtorneback]

Thank You edshult...Göran was my dad,he passed on 2001. He was a great man with alot of ideas and onspot was one of them....

[jtorneback]

My dad invented those chains :-)

[scavenom2008]

i did!!! he stole my idea :-(

[edshult]

Göran Torneback invented OnSpot - a refined application of a 1915 patent origianally granted to the American inventor named W.H. Putnam.

[rccovalt]

Part 2 of 2

Of course Ive seen drivers that were too lazy to stop and put the manual chains on and when they start going downhill with the onspots on and then are forced to slow down and stop, they lose coverage and start to slide.

[rccovalt]

Part 1 of 2

Ive used these for many years on school buses. They are great, but you must remember that they only work if youre moving. If you stop, you lose coverage. This can be especially bad going up or downhill, where, if youre forced to stop, you lose that coverage. My school districts policy was to use them on flat surfaces, but if youre heading downhill to the 6th grade camp, you disengage them and put manual snow chains on (Note: you cannot operate these with regular snow chains).

[harmankardonbose]

i think if you are stuck and put the "auto chains" the snow around the tyre wont let them turn

[broken588]

they've been out for years...fire trucks have always had them..they are called flail chains.

[fomocowboy]

school buses have been running them for years too. be kinda neat to have one of the big 3 stick em on their pickups though

[seanasaureous]

Wonder if these are legal in the UK?

[Pistal2k]

there all over the world we have over 2 thousand dealers just in the US and bout 1000 in the UK area

[kasl33]

They don't typically work well in snow over 6" deep though. Otherwise they are just fine.

[Baraquiel62]

greetings from Mexico City!

[humantestdummy]

looks like a weapon lol

[MidnightMarrow]

Battle Bots HOOOOO!

[tnraven]

yeah, I think I've seen those around.. always figured they were draggers to eliminate static charges... the only question I have.. what happens if a link flies off? Wouldn't it have the ability to cause some serious damage?

Oh, I'm sorry, honey, one of the auto chains flew off and ripped through our fuel tank...

[spimby]

That's pretty freakin brilliant.

[SanguineIllusion]

I was following a bus or something that said it had automatic snow chains and it's been bugging me for weeks trying to figure out how the hell it would work. At last I know the truth...

[wmhauler25]

Have these on my truck...there awsome!!!

[tubofbologna]

no you don't

[TheBlackWolfDK]

@wmhauler25 okay. are they as good as normal chains?