BikeTech Page 4

The Road Test
After a one week 2000 km (1400 mi) bike trip to Italy I gained the following results (besides a slightly sensitive bottom):

I have used the hinged Trevor screen for the full part of the trip. It was mostly extended to nearly the maximum height (50 cm - 20"), which is just below eye level for me. For off-road trips (about 100 km) I lowered it to around regular BMW tall screen level to better be able to overlook the road. The modified screen worked excellent: I did not have to clean my visor even once during the trip. The two friends who accompanied me for the first half of the trip on their Honda VFR bikes had to clean their screens daily, even though they claimed to have no problems with wind up to speeds of 160 km/h (100 mph) on these road bikes.

The left picture shows my screen after about 1600 km (1000 mi), while the right screen shows the helmet visor at the same point in time: No Bugs!

There is no clearer proof that the screen modification works very well.

Reliability
No changes had to be made during the trip which included over 100 km (60 mi) on unpaved mountain roads. The screws have been perfectly in place all the time. Only after about 1000 km (600 mi) of mountain curves with multiple bumps and very frequent accelleration and braking, the hinge pin started to wear a bit, which resulted in a slight noise when you go over a road bump. This wear is caused by the relatively small width of the hinge in relation to the overall weight of the screen. At no point the screen was vibrating or shaking. Over time I might eventually replace the hinge by a slightly wider one.

Remaining observations
The only downside of the screen modification that I could find up to now has been that the bracket screws attached to the plastic headlamp mould also need to come off when you need to fill up cooling fluid: About a one minute delay every time you refill coolant.

For me, this overall modification of around $15 works perfectly well and is easy to install by anyone able to drill a hole and turn a screw. Without serious off-roading it will likely last for many thousands of miles.

Anyone interested in buying my now useless Ermax screen?

Questions or your own experiences? Send me mail.