Liten gjenoppliving av denne tråden, men da en utvidelse til sikkerhetstenkning og en teknisk diskusjon på "skikkelige" rullebur eller roll bars, ikke rene "style bars" som denne diskusjonen startet med.
Mange monterer slike, jeg lurer på om folk har noen kommentarer til en post jeg fant, som peker på faren med roll bars dersom man er over en viss høyde, og blir påkjørt bakfra. Fant denne posten på
http://forum.miata.net/vb/archive/index ... 86914.html
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While I don't yet have a roll bar, I've investigated them many times, as I'd like to do some track days and most places require one.
Many would argue that a roll bar on any convertible is just about mandatory, but sadly if ever there was a car design which made an effective roll bar installation all but impossible, it is the Miata.
Assuming you're anywhere near 6 feet tall, you can't get a bar under either of the tops which would hit the ground in a rollover before your head did. Still, having one there would certainly maintain more space for you to (hopefully) survive in, and that's still a plus.
The BIG problem with putting any true roll bar in any Miata isn't really the lack of vertical space - It's the fact that you can't get it far enough behind you to get it away from your head. It's about the exact height of your head and just a few inches behind it, which means that in a rear end collision (and there are hundreds of times more of those than there are rollovers) there's going to be a secondary collsion inside the car - Your head with the bar.
Even if it's legally padded, it's still a steel pipe with 3/4 inch of foam around it, and I'd not care to have someone hit me over the head with such a device, let alone get hit with it at 60 MPH. For a track car where you're always wearing a helmet, I could justify it, but for everyday, with a 'naked' head . . . .
I've put off the purchase of one for years as I'm not sure that it would help me more than it would hurt me - If you stay right side up, it's unnecessary, and with a little care and common sense, you DO have something to say about that - You have much less to say about some fool rear ending you.
I just don't know . . . .
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Nå ble jeg i tvil jeg også.....
Noen høye personer med "ordentlig" veltebøyle som har synspunkter på hvilken bøyle man kan ha så hodet ikke slår inn i bøylen ved en påkjørsel bakfra? På min style bar er det 10 centimeter fra nakkestøtta og bakover til kromrøret, og røret ligger lavere enn nakkestøtten, så den anser jeg som rimelig trygg i forhold påkjørsler bakfra. Taking har jeg planer om å unngå.....
Samtidig har jeg tenkt å beholde både vanlig softtop og hardtoppen.
