Zero Gravity double bubble

Bike aesthetic/mechanical/electrical modifications and general wrenching advice.
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Prof J
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Re: Zero Gravity double bubble

Post by Prof J » Mon Sep 09, 2019 7:37 pm


UFO wrote: Sat Aug 17, 2019 5:41 pm I just overlayed the OEM shield onto the ZG DB. You can't overlay them exactly because of the bubble pushing up on the DB, but I tried to align the holes.

There's no way the DB is 3" shorter than OEM. At most it's 1/2" shorter, but that's deceiving because of the shape of the bubble. So I would say from a front on, cross section height POV they are basically the same height, but the bubble should help deflect a little more air upwards, and will definitely help in a tucked in situation.

On bikes like this, screens are primarily and aesthetic anyway. Get what you think looks good. The only way you will get large amounts of air deflection is mounting a huge assed screen. Even the ZG sport-touring screen probably won't deflect a significant amount of air away from the head area. In fact, it might create more turbulence/buffeting, which is worse than clean air hitting the helmet.
The noise I get is terrible. I'm almost deaf in my right ear anyway, and even with that, the noise is terrible. I have a new helmet I'm experimenting with pad thickness, fits well, but still . . .

The turbulence from the OEM screen hits right at the shoulders/chin. So I'm back to the drawing board with a few thoughts (ANC earbuds are arriving tomorrow):

1. try a notably shorter windscreen which might move the turbulence down to the chest, leaving clean air at the helmet

2. Modded windscreen to increase height 3-4" from OEM

3. 1, or 2 above, or ?
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Re: Zero Gravity double bubble

Post by UFO » Tue Sep 10, 2019 1:27 am


Prof J wrote: Mon Sep 09, 2019 7:37 pm

The noise I get is terrible. I'm almost deaf in my right ear anyway, and even with that, the noise is terrible. I have a new helmet I'm experimenting with pad thickness, fits well, but still . . .
Ride with earplugs. To do anything else guarantees early and permanent hearing loss.

Depending on the helmet you wear and the type of fairing you have wind noise inside a helmet can reach 100-110 db. Anything over 85 db is considered loud, and even repeated short exposure to it can cause hearing loss. Long exposure (touring, etc) is guaranteed to cause hearing loss.

Cheap, disposable earplugs can attenuate about 35 db, bringing it down to 75ish db and saving your hearing.

There's no magical helmet or fairing (except something like a Goldwing or taking a car) or helmet pad thickness that will prevent this. Helmets are noisy as hell.
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Re: Zero Gravity double bubble

Post by Prof J » Tue Sep 10, 2019 2:01 am


UFO wrote: Tue Sep 10, 2019 1:27 am
Prof J wrote: Mon Sep 09, 2019 7:37 pm

The noise I get is terrible. I'm almost deaf in my right ear anyway, and even with that, the noise is terrible. I have a new helmet I'm experimenting with pad thickness, fits well, but still . . .
Ride with earplugs. To do anything else guarantees early and permanent hearing loss.

Depending on the helmet you wear and the type of fairing you have wind noise inside a helmet can reach 100-110 db. Anything over 85 db is considered loud, and even repeated short exposure to it can cause hearing loss. Long exposure (touring, etc) is guaranteed to cause hearing loss.

Cheap, disposable earplugs can attenuate about 35 db, bringing it down to 75ish db and saving your hearing.

There's no magical helmet or fairing (except something like a Goldwing or taking a car) or helmet pad thickness that will prevent this. Helmets are noisy as hell.
UFO, i should have shared, as well, I do wear ear plugs, or a form of them, always
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Re: Zero Gravity double bubble

Post by Vex » Wed Sep 18, 2019 3:01 am


Prof J wrote: Mon Sep 09, 2019 7:37 pm The noise I get is terrible. I'm almost deaf in my right ear anyway, and even with that, the noise is terrible. I have a new helmet I'm experimenting with pad thickness, fits well, but still . . .

The turbulence from the OEM screen hits right at the shoulders/chin. So I'm back to the drawing board with a few thoughts (ANC earbuds are arriving tomorrow):

1. try a notably shorter windscreen which might move the turbulence down to the chest, leaving clean air at the helmet

2. Modded windscreen to increase height 3-4" from OEM

3. 1, or 2 above, or ?
Prof J, so that's one thing annoying me about this bike. I came from a custom street fighter with no wind protection or screen at all. I have no issue with wind pounding me in the chest for hours at a time, but the stock windscreen pummels turbulent air directly in my face, unless I tuck. My head is thrown about way more now too.

It also makes my GoPro mic unusable because it constantly picks up wind noise (far more than with no wind screen at all). I don't like the look of super tall wind screens, and it doesn't sound like the double bubble helped much.

Anyone know of a "shorty" screen? Was there something about the original H2 SX coming with a screen that was an inch or two shorter than the SX SE?

It's killing me at this point. I basically have to unhook my GoPro mic.
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Re: Zero Gravity double bubble

Post by CoolDaddyGroove » Wed Sep 18, 2019 2:47 pm


I have an H2 SX, and the screen is smaller than the H2 SX SE.

When one guy says (Oh this screen is awesome for me", and another guy says "It sucks", you do realize that feedback is completely useless for anyone else unless you include other critical information about you, right? Even telling us how tall you are is irrelevant. You could be like me, 6' tall but I have a 30" inseam, which makes my seated position on the bike more like a 6'2" guy.

What you wear has a lot to do with it as well. I wear a tight fitting Dainese leather race suit. If I slip my Scott rain jacket over top to block the wind or shed some rain, the noise in my helmet goes up significantly. You would experience more wind noise wearing a ballistic nylon jacket versus a leather one.

I have have this cheap wind deflector on my H2 SX and my previous N1K. I just did 1500kms in 2 days in the rain and temps ranging from 5C to 12C and this thing worked wonders. Best $25 I have ever spent on a motorcycle accessory. I particularly like it this summer when the temps on our trip were close to 40C and I adjusted the deflector so it directed air straight at my chest.

I would buy one of these before I started down the rabbit hole of windscreens

https://www.ebay.com/itm/USA-Adjustable ... 2255325824
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Re: Zero Gravity double bubble

Post by Burmashave » Wed Sep 18, 2019 3:01 pm


CoolDaddyGroove wrote: Wed Sep 18, 2019 2:47 pm ...I have have this cheap wind deflector on my H2 SX and my previous N1K. I just did 1500kms in 2 days in the rain and temps ranging from 5C to 12C and this thing worked wonders. Best $25 I have ever spent on a motorcycle accessory. I particularly like it this summer when the temps on our trip were close to 40C and I adjusted the deflector so it directed air straight at my chest.

I would buy one of these before I started down the rabbit hole of windscreens

https://www.ebay.com/itm/USA-Adjustable ... 2255325824
CoolDaddy, does the deflector clamp to the windscreen, and if so, does it leave any marks when it's removed?
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Re: Zero Gravity double bubble

Post by Vex » Wed Sep 18, 2019 5:08 pm


CoolDaddyGroove, yep, I realize other people's experiences are not a direct correlation to what mine will be, but it's still a fairly good indication over all. I noticed the ZG SR is a shorter shield, so I ordered a dark smoke one. It's a 2-6 week lead on the dark smoke, but I'll try to update if it comes in before inclement weather grounds me.

I've looked at clip ons like that, but I'm not gonna lie, aesthetically it slays me. Makes my eye twitch.
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Re: Zero Gravity double bubble

Post by CoolDaddyGroove » Wed Sep 18, 2019 11:50 pm


Burmashave wrote: Wed Sep 18, 2019 3:01 pm
CoolDaddyGroove wrote: Wed Sep 18, 2019 2:47 pm ...I have have this cheap wind deflector on my H2 SX and my previous N1K. I just did 1500kms in 2 days in the rain and temps ranging from 5C to 12C and this thing worked wonders. Best $25 I have ever spent on a motorcycle accessory. I particularly like it this summer when the temps on our trip were close to 40C and I adjusted the deflector so it directed air straight at my chest.

I would buy one of these before I started down the rabbit hole of windscreens

https://www.ebay.com/itm/USA-Adjustable ... 2255325824
CoolDaddy, does the deflector clamp to the windscreen, and if so, does it leave any marks when it's removed?
After giving the windscreen a wipe after removing it.....no it does not leave a mark. The fastening design allows only a soft jelly like material to contact the screen.

Yeah, may look goofy to some, but the adjust-ability is worth it. I don't get the feeling many H2SX riders actually do any serious touring on this thing. I can knock down an 800km day of knee dragging turns on this thing day after day after day
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Re: Zero Gravity double bubble

Post by Prof J » Thu Sep 19, 2019 2:56 am


Vex wrote: Wed Sep 18, 2019 3:01 am
Prof J wrote: Mon Sep 09, 2019 7:37 pm The noise I get is terrible. I'm almost deaf in my right ear anyway, and even with that, the noise is terrible. I have a new helmet I'm experimenting with pad thickness, fits well, but still . . .

The turbulence from the OEM screen hits right at the shoulders/chin. So I'm back to the drawing board with a few thoughts (ANC earbuds are arriving tomorrow):

1. try a notably shorter windscreen which might move the turbulence down to the chest, leaving clean air at the helmet

2. Modded windscreen to increase height 3-4" from OEM

3. 1, or 2 above, or ?
Prof J, so that's one thing annoying me about this bike. I came from a custom street fighter with no wind protection or screen at all. I have no issue with wind pounding me in the chest for hours at a time, but the stock windscreen pummels turbulent air directly in my face, unless I tuck. My head is thrown about way more now too.

It also makes my GoPro mic unusable because it constantly picks up wind noise (far more than with no wind screen at all). I don't like the look of super tall wind screens, and it doesn't sound like the double bubble helped much.

Anyone know of a "shorty" screen? Was there something about the original H2 SX coming with a screen that was an inch or two shorter than the SX SE?

It's killing me at this point. I basically have to unhook my GoPro mic.
Vex,

We share some of the same observations about the windscreen, noise, etc.

For the windscreen, it's either going higher, or lower. At this moment I'm thing trim the OEM an inch or two.

I have a cheap ANC set of earbuds, and they have cut down the air turbulence noise by half, maybe more. I'm going to test out an ancillary set of helmet pads, trimmed for thickness, and or a set of shoulder pads.

I will find a set of the above which will work, with the least amount of fuss each time I ride.
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