Tiretool
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Contest Entry.STEP
170 KB
V1
by
Robert Bader
##1338905797##
12 months ago
contest entry.cgr
21 KB
V1
by
MESWIK
##1340388683##
11 months ago
Contest Entry.x_t
72 KB
V1
by
MESWIK
##1340388951##
11 months ago
add
The part can either be produced via Stamping or laser cutting. The two hexagonal cut outs are for removing the tire and losening the nut on the valve. The smaller of the two (for losening the nut on the tube valve) is positioned where the tool is slender so it fits between the spokes. The other end features a bend so that the tool may be used to leverage the tire over the rim. The black portion is a plastic which would be applied by dipping. It has two functions: To protect the tire when the tool is being used as a lever and to also act as a handle when the tool is being used to losen nuts.
The cost to produce such a part is low, <1.5 USD. The parts can also be placed in a backpack so that it may be used if a tube were punctured during trail riding.
Comments:
Robert, thank you for your entry!
I like your idea of integrating wrench functions to the tool.
I have made following observations about your design:
1. The tools plastic end seems to be quite wide comparing to regular tire levers. This could be a weak point of your design as it could take a too big "bite" of tire and make the process more difficult.
2. The plastic coating would not elliminate the innertube breaking problem. It's not the material that harms the tube but the fact that the tube gets between lever and rim.
3. I’m also afraid that with this material usage the tool would easily bend. Tire levers are mostly casted which gives them proper strenght.
Please take my feedback as guiding notes for better end result. I hope you will find a way to improve your entry and come up with a great solution.
Cheers,
Tõnu
1. The end is quite large, I will modify the size
2. Maybe the plastic would not help against damaging the tube but a change is shape might help.
3. I simulated the forces and you are right even with material S550MC there are still problems...
I can solve this!
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