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1330cc Too much wind.

OK---- When a windshield like our :spyder2:'s is pushed through the air at speed a low pressure area is created and the turbelence we feel is the high pressure air being pushed aside and over the screeen rushing into the area behind the screen. A VENT will fill the low pressure and then---- no turbelence.

Lew L
 
Now admittedly, my RT is a 2013 Ltd with the 998cc motor, but I think this issue is related to the RT Shape rather than anything motor size related! ;)

Anyhow, We used to have the same problem when my Missus rode pillion on my RT, especially that 'wet back from wet roads' thing!! She'd get soaked from water hitting the back of her helmet/jacket & running down her back, plus she'd often complain of the strong fuel/exhaust smell too! Since my RT Ltd came with the 2 largeish vents in the lower section of the screen, I didn't go down the path of adding further vents in that. Instead, I played with a few ideas aimed at cleaning up the airflow behind the panniers & trunk thru adding fairings or 'wings' on the tupperware instead, but, none worked well until I hit upon fitting an extendable trunk lid rack. Fitted that & problem solved! It works very well with the 1/2 cover on the rack, & I added a flat filler of 1/8th inch ply when the rack isn't in use; result is that all the problems associated with that 'air turbulence' thing, the helmet lifting off, the buffeting, the exhaust smell, and the wet back issues et al are all gone!! :2thumbs:

So I reckon the issues many experience are mainly due to the std RT &/or larger screens creating a fairly big low pressure area behind them & where the rider/passenger sit, so that the low pressure area behind the panniers & trunk merges with the screen low pressure area & together the problems are worse, basically sucking all the turbulence & road spray, exhaust smell etc into what's meant to be the rider/passenger 'still air' zone!! Adding vents to the screen (if you don't have one already) might help, or as we've found, by simply by fitting a 'whale-tail' type trunk lid carrier or airfoil on the top of the trunk, you can iron out the air flow over & around the bike, moving the lowest air pressure into the area behind the trunk & so helping to keep the pillion in the largely 'still air' bubble formed by the screen that the rider usually enjoys! I'll try to put up a pic....
 
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Many moons ago I tried the micro swerl edge on a motercycle shield. It did not work. But I've used vents ( Gold Wing style ) on two vehicals----- they work.

Lew L
 
But I've used vents ( Gold Wing style ) on two vehicals----- they work.
They work to reduce the back pressure behind the windshield but don't do anything that I can see in reducing the backward air flow at the rear of the bike. And when the weather is clammy and the road wet I have the vent closed so the wet spray comes forward to the backside of the windshield!
 
^^ That's where the 'whale tail' type rack can help - even open like the one shown, it helps keep the low pressure area down & behind the panniers & trunk on the RT, & stops the turbulence carrying wind, spray, & dust, etc up onto the back of the ryder & pillion. Here's the rack I run; if I'm not carrying anything there but intend travelling a bit of distance, I strap a 'cut to size' piece of 1/8th inch marine ply on top so it really acts like a 'whale tail' spoiler! :thumbup:
 

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I'm going to buy one of these next month. Look on Amazon or Revzilla.
This item MRA 4025066125036 X-Creen Clear Bolt-On/Add-On Variable Windscreen Spoiler Blade

I own one of these and love it. My wife used to complain when I lowered my windshield, but I use the really short windshield in combination with this and she doesn't have any problems (and I get to have the wind in my face).

I now can't imagine not having one of these. When I borrowed a different RT from the dealership while mine was in the for day, the stock windshield made it so hot I didn't even bother to ride.
 
A VENT will fill the low pressure and then---- no turbelence.

Lew L

Maybe. IF that's where the offending air is coming from.

The rider also can create a low pressure area behind him.

I have a vented windshield and really like it........but my back still feels the cold breeze if I go out too early in the morning.
I also have the adjustable replacement lower side wings but haven't decided how much good they do.
 
How tall are each rider, and what type helmets if any are worn.

Kind of an ironic topic. Just a few days ago I started a technical discussion on FB regarding windscreen airflow.

Before getting convinced a vent will help or solve the concern, realize the 2014 Spyder RTS with a stock windscreen already has two fairly large vent holes cut through it at the base.

Additionally, since the RT series windscreen is “post” mounted there is a huge gap at the base that allows airflow to bleed onto the windscreens backside. These two oem features aerodynamically enhance windscreen backside airflow.

If the windscreen were fastened tightly against the bodywork, with no slot or vents, this bubble that others mention would be a very real concern.
 
^^ That's where the 'whale tail' type rack can help - even open like the one shown, it helps keep the low pressure area down & behind the panniers & trunk on the RT, & stops the turbulence carrying wind, spray, & dust, etc up onto the back of the ryder & pillion. Here's the rack I run; if I'm not carrying anything there but intend travelling a bit of distance, I strap a 'cut to size' piece of 1/8th inch marine ply on top so it really acts like a 'whale tail' spoiler! :thumbup:

I have an extra "Whale Tail" that was on a boat motor to help get the boat 'on plane'. Perhaps I'll try to incorporate on the Spyder.
 
Thanks to Peter Aawen explanation I Just ordered this rack. Probably be a few weeks to get it here and then we have to get some decent wheather. Still have 8 ft snow bank and 4ft infront of my shop door. Getting very anxious for spring.
 
Now admittedly, my RT is a 2013 Ltd with the 998cc motor, but I think this issue is related to the RT Shape rather than anything motor size related! ;)

Anyhow, We used to have the same problem when my Missus rode pillion on my RT, especially that 'wet back from wet roads' thing!! She'd get soaked from water hitting the back of her helmet/jacket & running down her back, plus she'd often complain of the strong fuel/exhaust smell too! Since my RT Ltd came with the 2 largeish vents in the lower section of the screen, I didn't go down the path of adding further vents in that. Instead, I played with a few ideas aimed at cleaning up the airflow behind the panniers & trunk thru adding fairings or 'wings' on the tupperware instead, but, none worked well until I hit upon fitting an extendable trunk lid rack. Fitted that & problem solved! It works very well with the 1/2 cover on the rack, & I added a flat filler of 1/8th inch ply when the rack isn't in use; result is that all the problems associated with that 'air turbulence' thing, the helmet lifting off, the buffeting, the exhaust smell, and the wet back issues et al are all gone!! :2thumbs:

So I reckon the issues many experience are mainly due to the std RT &/or larger screens creating a fairly big low pressure area behind them & where the rider/passenger sit, so that the low pressure area behind the panniers & trunk merges with the screen low pressure area & together the problems are worse, basically sucking all the turbulence & road spray, exhaust smell etc into what's meant to be the rider/passenger 'still air' zone!! Adding vents to the screen (if you don't have one already) might help, or as we've found, by simply by fitting a 'whale-tail' type trunk lid carrier or airfoil on the top of the trunk, you can iron out the air flow over & around the bike, moving the lowest air pressure into the area behind the trunk & so helping to keep the pillion in the largely 'still air' bubble formed by the screen that the rider usually enjoys! I'll try to put up a pic....

Peter do you have a pic of your set up?
 
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