Friday, 25 December 2015

DIY Ice Tyres: Updated

The first Snow Quake is an experiment, and it doesn't make sense for a lot of riders to buy ice tyres for one ride a year, so Mike of Survivor Customs set about making his own. Here's what he says...

You want a half decent enduro/ motorcross tyre with some decent tread.  The length of screw will depend on the tyre tread depth, I reckon you want blocks at least 20mm deep,so if you use a 25mm screws you will need to line it with something 5mm thick at least 
I researched and spoke to a couple of people who made their own studded tyres, and discovered you need the screw to go right through the tyre carcass this will help it stay in as it bites into the cord. Hence why you need a liner. 

The screws I used were sourced from a local bolt and fasteners shop... they are M6 x 25mm Hex head self tapping screws with an 8mm head. These are also known as roofing or tech screws but you don't want the ones with the self drilling tips you want the pointed ones. 
I made a tyre liner from an old speedway tyre you need to cut the bead and half of the wall off each side of the tyre so it slots inside underneath the tread .... the screws slightly bite into the inner / liner securing the screws so I'm told. 
Once the screws were all fitted securely I used an angle grinder to cut slots in the heads roughly half the depth of the head... this is important because this is the tread of your tyre. The grooves make them grip. You need to change the angle of the grooves. In the centre of the tyre, the grooves should be horizontal, that means across the tyre. The outside screws, used when leaning, need vertical grooves. The screws inbetween need diagonal cuts. 

UPDATE: Bob in Minnesota (where they know a lot about ice racing) says to remember to tape the joint of the liner to stop it nipping the tube. I'm sure Mike at Survivor would have done that, but forgot to say in this quick how to he kindly wrote for us.
Hope it kind of makes sense... these methods are tried and tested, but I've never ridden on ice before so I thought it was best to use some seasoned knowledge, to make these on the cheap.

Click to find out more about the Snow Quake race we're promoting with Deus ex Machina and Pirelli in the Italian Alps. G

2 comments:

topjob said...

Make sure you put some duct tape across the seam of the inside liner. If you don't, it will pinch your tube and cause a leak.

Mike Hill said...

Yeah good point... I did cover the join with duct tape,sorry forgot to say 👍