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Tyres and soles of shoes....to Ice Proof (2)
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Tyres and soles of shoes....to Ice Proof (2)

 
<FONT COLOR=DIMGRAY>Tyres</FONT> and <FONT COLOR=SADDLEBROWN>soles of shoes</FONT>....to <FONT COLOR=ROYALBLUE>Ice Proof</FONT> (2)

Page Type: Article

Activities: Mountain

 

Page By: chaberton

Created/Edited: Jan 7, 2014 / Jan 7, 2014

Object ID: 288924

Hits: 2033 

Page Score: 74.92%  - 5 Votes 

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Preamble

 
January 2014
 


The recent purchase of a mountain bike with disc brakes, I was able to put into practice an idea long ago view on the internet (with some additions and modifications).


That is to equip my mud tires with snow chains.


After the experience with studded tires (very good), I wanted to experience this second option to ride a bicycle on ice and snow.

Materials and Methods.

are needed: 
Gears
 




-about 6 meters of chain twisted galvanized 3 mm. (price 2,25 € per meter)



-a pack of 100 strips 280x4, 5mm. (price 2,99 €)

Assembly

 
Twisted Galvanized Chain
Twisted Galvanized Chain
With a wire cutter cut pieces of chain of about nine rings (12 cm.), no longer so as not to touch the rim of the wheel with the metal.

Place a chain for each space between the spokes of the wheels using a plastic tie as firm.
It is better not to fix the chain at the point of the rim where the valve comes out of the air chamber.

 
Assembly
 


The band passes through the two ends of the chain and on the inner side of the rim goes to close the chain.
It can easily adjust the tension of the chain according to the pressure of the tire.
Once the straps tight you cut away the excess plastic ends.

Time required for assembly:
about twenty minutes to cut the pieces of chain.
about thirty minutes to fix clamps and chains on the tires.

IMPORTANT:
it is better to leave a little 'end of the strap so that you can further tighten the chain if you want to lower the tire pressure.

 
Front Tyre
Front Tyre
 
Rear Tyre
Rear Tyre

Results

 
<i><font color=cyan>Blizzard</font></i>
 


On packed snow thickness of about 15-20 cm: excellent grip and traction even on stretches of bare ice, safe braking and starts immediately (tire pressure about 3.5 atmospheres).


On thick Snow (about 1 meter thick) it is advisable to lower the tire pressure to two atmospheres, otherwise the rear wheel traction tends to "dig" the snow, alike downhill to a certain speed the front wheel tends to "float" the snow and lose stability.


A preliminary assessment of the compactness of the snow layer will allow you to set at best your tires (pressure of the air chamber) and your chains (tension).


With the same system (strips and chains), you can also mount on the mountain boots snow chains (it takes about 11/13 chain links).


It is very useful in the sections where you have to push the bike.

Conclusions

It is definitely a good way to go with the mountain bike on snow.

Advantages: limited cost - speed and ease of assembly

Disadvantages: once installed (if you do not have two wheels) to be able to use the bycicle on the asphalt, you have to disassemble everything.

I'm studying a system with a steel cable and two rubber rods to make the whole thing assembled and disassembled at will.

Road Test (VIDEO)

Snow Bike from chaberton on Vimeo.

Images

<i><font color=cyan>Blizzard</font></i>Rear TyreJanuary 2014Spring is Here!Tyres and.....shoes!GearsTwisted Galvanized Chain
AssemblyFront Tyre

Comments


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Viewing: 1-5 of 5

Diego SahagúnThe only issue...

Diego Sahagún

Voted 10/10

that I see could be the loose of the spokes because of the bands' pressure Roberto.

Have you noticed that?
Posted Jan 9, 2014 12:29 pm

chabertonRe: The only issue...

chaberton

Hasn't voted

Thank you for your observation Diego.

I checked the tension of the spokes either after the chains have been mounted, either after a three-hour hike in the snow, the spokes were not loose tension.

However, after the excursion the tire pressure was decreased of one atmosphere , then the pump should always have available to prevent that the chains become loose.

My concern is that the straps ruin the rims, it is for this reason that I am studying a system with two large rings, adjustable tension, that combine the chains (such as cars).

This would make the system assembled and disassembled at will.
Posted Jan 10, 2014 1:18 am

Diego SahagúnRe: The only issue...

Diego Sahagún

Voted 10/10

We use that system for mountaineering when there is no much ice and the slopes are not steep. I don't know if you know those chains, they are Italian, called Turtles. Their weight is less than half our Charlet Moser crampons' but they don't work fine on steep slopes.

I hadn't seen your system on mountain bikes before. The studded tires are what I'd seen before. Some tricks: http://www.bikehacks.com/bikehacks/2010/12/st.html

Take care Roberto
Posted Jan 10, 2014 3:56 am

chabertonRe: The only issue...

chaberton

Hasn't voted

Thank you for the Link dear Diego.
My idea to complete the Bike Chain is similar to the images in this site:

Mbike chains

without having to use the arc welder that I do not possess
Posted Jan 10, 2014 8:52 am

Diego SahagúnRe: The only issue...

Diego Sahagún

Voted 10/10

It seems not to be an easy work Roberto. And I think that you didn't like to have your new bike rims eaten away.

Hablamos
Posted Jan 10, 2014 9:49 am

Viewing: 1-5 of 5