List of materials we use and abbreviations indicating them
- PC – monolithic polycarbonate
- PET-G – polyethylene terephthalate glycol
- PMMA – polymethylmethacrylate (acrylic glass)
Windshields made of acrylic
Traditionally, snowmobile windshields was made of plexiglass – transparent PMMA (acrylic glass, plexiglass, cast acrylic). This material is quite easily molded and provides very good light transmission. But such windscreens were not strong enough for snowmobiles, in addition, acrylic glass with a sharp impact can break and form sharp fragments, which increases the likelihood of injury during a coup or a frontal impact. At the moment, PMMA is used only in produce of windshields for mountain snowmobiles, where a small area reduces the likelihood of breakage during impact.
The next step was the use of PET-G (modified polyethylene terephthalate). It is even easier to handle, extremely resilient, durable and transparent. But this material has its drawbacks: firstly, it degrades quickly enough in bright sunlight and becomes even more fragile than acrylic, and secondly, it has a low temperature of plastic deformation and when stored in a case in the summer, the snowmobile can bend simply under the weight of the case.
Polycarbonate windshields. The best material for windshields
Therefore, at present, monolithic polycarbonate, molded or cast, is used for the manufacture of glasses. This is the most durable of the known transparent plastics. It is used to make caps of military aircraft and police shields, vandal-resistant windows and hockey protective visors. 6 mm sheet of polycarbonate stops a bullet flying at a speed of 825 meters per second, from 10 meters. A sheet with a thickness of only 2 mm cannot be broken with a hammer. Greater thicknesses are only needed to give more shape retention on fast rides when the wind load becomes too high.
Polycarbonate. Pros and cons
Windshields made of 2 mm monolithic polycarbonate thick are able to withstand a snowmobile overturn, a branch blow at high speed, an ice lump from a snowmobile in front, and so on. Polycarbonate is resistant to frost and retains its properties up to -30 degrees. It also holds high temperatures, up to 100 degrees, without deforming or degrading.
A small drawback of monolithic polycarbonate windshields is the low strength of the surface UV layer. As a result of even the most careful operation, micro-scratches occur, which, although they do not interfere with the review, slightly lower the mood of the picky equipment owners.
Windshield Care Tips
To reduce the formation of micro-scratches, the windshield should be properly serviced:
- do not rub in case of dirt,
- wash with plenty of soapy water, with minimal use of rags / sponges,
- do not use detergents based on organic solvents.
- In case of visible scratches, cover the scratch with car wax.
Inexpensive and durable windshields
“Polyurethan” company produces all models of windshields for utility and tourist snowmobiles from monolithic polycarbonate. Our experience and the experience of our customers confirms: this is the best material for windshields at the moment, its advantages are too obvious to use anything else.