After purchasing and fitting an MRA screen to my 1150gsa all was well,bit more wind on my upper arms and shoulders but no buffeting.
When Jo was on the back,which is 60% of the time,it was a different story,as the bike lowered at the back it brought the line of the screen in a direct line with my line of vision,the screen was already on it's lowest setting so the only way i could see over the top was to tilt the screen fully toward me,so when it rained it was just like a constant steam onto my visor.
The constant readjustment of the screen was becomeing a right PITA so i decided to give the NACA vents ago on my old screen.
Here's what i found.
......Standard GSA Screen............MRA Vario............Naca Ducts GSA Screen.
40....mild wind noise................mild wind noise............mild wind noise
...no buffeting......................no buffeting..................no buffeting.
50....moderate wind...............mild wind noise..............mild wind noise
noise.mild......................no buffeting.................no buffeting
.buffeting
60...moderate wind...............moderate wind..............moderate wind noise
..noise.moderate................noise. no....................no buffeting
..buffeting.......................buffeting..................................................
70....moderate wind...............moderate wind................moderate wind noise
..noise.moderate...............noise.no........................no buffeting.no wind
...buffeting.......................buffeting.wind.................on shoulders
.................................. ....on shoulders
80....severe wind....................moderate wind...............severe wind noise.
...noise. severe..................noise.no.......................mild buffeting. no
....buffeting........................buffeting.moderate.........wind on shoulders.
........................................wind on shoulders.
90...severe wind.....................severe wind noise.............severe wind noise
.noise.severe.....................no buffeting....................mild buffeting.no
..buffeting.........................strong wind on................wind on shoulders
..........................................shoulders
Rider 5'9" seat 2" lower than standard GSA seat.
Helmet Shoei Multitec.
Both the standard screen and the "naca vent" screen gave much better protection from the rain than the MRA screen around the hands,upperarms and shoulders.
Do the "naca vents" work?
To a certain extent i think they do, they almost certainly reduce buffeting,though not quite as much as the MRA screen which appears to eliminate it,although the standard screen does offer better wet weather protection.
I will try to enlarge the vents slightly to see if this makes any difference,although not to much as i do not want to compromise the stength of the screen.
Watch this space.
Steve
When Jo was on the back,which is 60% of the time,it was a different story,as the bike lowered at the back it brought the line of the screen in a direct line with my line of vision,the screen was already on it's lowest setting so the only way i could see over the top was to tilt the screen fully toward me,so when it rained it was just like a constant steam onto my visor.
The constant readjustment of the screen was becomeing a right PITA so i decided to give the NACA vents ago on my old screen.
Here's what i found.
......Standard GSA Screen............MRA Vario............Naca Ducts GSA Screen.
40....mild wind noise................mild wind noise............mild wind noise
...no buffeting......................no buffeting..................no buffeting.
50....moderate wind...............mild wind noise..............mild wind noise
noise.mild......................no buffeting.................no buffeting
.buffeting
60...moderate wind...............moderate wind..............moderate wind noise
..noise.moderate................noise. no....................no buffeting
..buffeting.......................buffeting..................................................
70....moderate wind...............moderate wind................moderate wind noise
..noise.moderate...............noise.no........................no buffeting.no wind
...buffeting.......................buffeting.wind.................on shoulders
.................................. ....on shoulders
80....severe wind....................moderate wind...............severe wind noise.
...noise. severe..................noise.no.......................mild buffeting. no
....buffeting........................buffeting.moderate.........wind on shoulders.
........................................wind on shoulders.
90...severe wind.....................severe wind noise.............severe wind noise
.noise.severe.....................no buffeting....................mild buffeting.no
..buffeting.........................strong wind on................wind on shoulders
..........................................shoulders
Rider 5'9" seat 2" lower than standard GSA seat.
Helmet Shoei Multitec.
Both the standard screen and the "naca vent" screen gave much better protection from the rain than the MRA screen around the hands,upperarms and shoulders.
Do the "naca vents" work?
To a certain extent i think they do, they almost certainly reduce buffeting,though not quite as much as the MRA screen which appears to eliminate it,although the standard screen does offer better wet weather protection.
I will try to enlarge the vents slightly to see if this makes any difference,although not to much as i do not want to compromise the stength of the screen.
Watch this space.
Steve
