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Windscreen and Buffeting 2012+ DL650 - Appendix 1 - Custom Deflectors

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183K views 194 replies 104 participants last post by  Trevd  
#1 · (Edited)
Apologies up front if this 'Appendix' idea goes against the 'the only one' theme of the main Windscreen and Buffeting thread... I'd be happy to move this topic into that thread but it is getting a bit long... so didn't want to clog it up. Happy to rename this if inappropriate too.

Following on from my initial post here.


Herewith my guide to making your own Air Flares for the Glee:


Disclaimer - this is free advice and probably worth every penny. Please don't melt your bike and/or create something that distracts you and makes you fall off it at speed (or stationary for that matter!)... or anything like that. Oh... and please don't blame me if something goes wrong. I'm quite brave around the workshop although with no appropriate training. I've learned by trial and error and might be underestimating how easy I thought this was, or what a risk I took pressing (reasonably) hot Perspex to the plastic fairing of my prized Glee. I've never worked with Perspex until now... if that helps... but I've used a jigsaw and drill before. I wear eye protection these days too :thumbup: and so far so good. No Glee was hurt in the making of this article and there was no blood, burns or blindness suffered afterward by anyone involved or standing nearby. :fineprint:

WARNING: The design isn't perfect and you will need to somehow protect the plastics from being scratched when riding and the air pushes the Air Flares inwards toward the fairing. I'm still trying to figure out a permanent solution (ideas welcome!) but for now I'm using rubber sticker discs normally used under furniture. Glass protector buttons also work, and with one prototype I stuck foam rubber all along the edges, which really protects everything... but doesn't look too good.


What you'll need:

- Longer bolts than the ones in the fairing. I used ones about 50mm / 2" long. There is a limit to the length. If you feel around inside the fairing you'll realise there's something metal there that will eventually get in the way of the bolt if it's too long.

- Paper or cardboard to create a template.

- An A4 (roughly) sized sheet of Perspex or suitable material - I got mine from a signage company - just walked in and asked for an off-cut... cost - $0

- Suitable saw to cut out the shape

- Sandpaper to smooth things around the edges

- Plumbers torch or heat gun or some such thing with which to heat up the Perspex so that you can bend it. Lots of 'how to' stuff on YouTube... it surprised me how easy it is if you have a torch. I wouldn't be surprised if you could do it with a candle and some patience.

- Drill to make mounting holes. I used about a 6mm wood drill bit (I wanted the hole to be larger than the bolt to avoid stressing the Perspex).

- Rubber spacers / washers. I used a thick, hard rubber tap washer, surrounded by soft (old bicycle inner tube) cut outs, plus a metal washer on the outside.

- Something to protect the fairing from the Air Flare rubbing against it. As per warning above.

- A sip of good ale really helps now and then :yesnod:


Step 1:
Start out with this shape

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Step 2:
Transfer this shape to your choice of material.

I tried with a thinner Perspex first, then opted to go with this 3mm stuff. There are pros and cons to the choice, around flexibility, durability, etc. My bike is garaged day and night and mostly on tarmac. They are pretty easy to make once you get the hang of it... so try different thicknesses and see what works best for you. I'm not sure if this methods works on anything other than Perspex though. So please do some research on how to bend other materials before simply aiming a flame at it.

Tip: Try leaving the protective film on to prevent scratching until you use the heat gun... then it needs to be off.

Tip: Make a few extra templates. Once you've bent them you'll realise how impossible it is to copy them again ;)

Image



Step 3:
Cut them out with a metal hacksaw / blade (or better if you know how). My jigsaw on medium speed worked OK.

Cut slowly, and watch out for heat buildup. The Perspex will likely melt here and there along your cuts. Sometimes it re-connects to the other half and bonds so strongly you have to cut it again :headbang:

Try as far as possible to keep the material steady and avoid too much vibration/flexing. Just when you think you've finished with that last little bit to go, it might crack and you've got to start again :jawdrop:

Image


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Step 4:
Sand down edges by hand or with a sander. The finer the paper the cleaner you'll get the edges apparently. I just used standard '60' gauge sandpaper that came with my sander.

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Step 5:
Remove fairing bolt and store somewhere safe. You'll need to use a longer one if you're going to use enough rubber spacers to reduce vibration and permit some flexibility. See 'What you'll need' above.

Step 6:
Make sure you know where you want to position your Air Flare. I put these stickers on to show what I was lining things up with to try make something that kinda fits the lines of the fairing.

Hmmm... seems I've reach my limit of file attachments. Follow on post coming up!
 

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#116 · (Edited)
[EDIT] Sorry, accidentally posted in the 2012+ thread, mine is a 2009. But still, the windscreen is worth looking into.

I installed a National Cycle VStream Tall Touring Windscreen the other day adn so far like it alot.
I also have a Madstad adjustable bracket which really helps also.
With the windscreen all the way down and slightly back, it is better than the stock windscreen but there is still a bit of helmet buffeting.
But its nice cuz I am looking over the windscreen, which I would rather do.
With the windscreen set to the highest position the buffeting is GREATLY reduced, and wind noise is MUCH lower. I can hear the bike itself much better also.
But, in this position I am completely looking through the windscreen. Its not toooo bad, there is very little distortion from the windscreen, but it can still be a bit annoying looking through it.
I figure I will have it in the highest position for times I will do alot of highway travel, and lower it for when I am just on twisty back roads.

I am 5'11" and with the stock windscreen I had ALOT of helmet buffeting. With the stock bracket and windscreen it would give me a headache after a while on the highway.
 
#117 ·
Another testimonial...received the Augustus wind deflectors today. After installation, and a test ride, there is a noticeable improvement. The air that used to sweep up from the tank & hit me in the chin is now redirected. The closest onrush of air is directed out & under my arms.

There is some additional heat felt from the engine, but overall this is a big improvement in the reduction of buffeting...thanks Augustus! The planned short test ride turned into a nice hour long ride as I was enjoying the better airflow. If the weather wasn't deteriorating, I'd still be out there!
 
#122 ·
It is winter here and after reading this thread I went out to the garage and found a piece of Acyrlic that was left over from a boat windshield I had previously made.
I believe it is 1/4" It was easy to form with my heat gun and cut with a jig saw.
The fasteners came from an old Cee Baileys bag of screws and spacers. I had to cut the spacers in half as you can see from the rough cut in the photo.
The small black spacer had the correct shape to fit in the fairing of the DL.
All in all about a 1 hour job.






 
#123 ·
Augustus deflectors arrived here today, safe and sound in the UK! Very professional-looking, printed instructions, replacement bolts and spacers, and look pretty good on the bike! Will take it out after lunch and see what they're like...
 

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#127 ·
Finally had a chance to give the deflectors a real test, and they did not disappoint. No more air pressure on my chest or stomach at all, and my pillion reports a far quieter ride than before. Suzuki need to give this guy a job in their aero department ;)

Or, you know, create an aero department. Because so far they don't seem to be thinking about it at all...
 
#128 ·
Before owning my 2015 650A, I was concerned that I would not be able to get good head and body wind protection on a Vstrom. Following the info I got from this forum, I installed a 22" MadStad Adventure WS, a set of Augustus air deflectors, and a set of Adventure Tech mirror extenders. Now, I am "really" impressed at how good this set up is. No buffetting, very little wind noise even without my ear plugs, and good upper body wind protection. Thanks for all the info. Info note: I am 5' 11" with a 30 inseam.
 
#129 ·
Roy, glad you're enjoying your 'Strom! The Augustus wind deflectors do make a great difference, not tried the mirror extenders - do you have a link?

If you're still cold I can recommend heated gear - I use Keis heated vest and insoles along with my R&G heated grips. It was 4C on the ride in this morning and I was warm and toasty!

Winter? Bring it on!
 
#134 ·
From front to back they are 6"
top to bottom 5-1/4"
The bend is 30 degrees
Shape was taken from a drawing here on this site, I just held the paper up to the computer screen and traced it, Then I enlarged the tracing to what I felt was the right size.
The tubing on the bottom is siphon hose from beer making, I believe it was 1/4", it fits real tight so hopefully it stays on.
On the top I tried door edging with an adhesive but it would not stick to the acrylic so I'll put some hose on the top also.

If they move around I'll put a larger soft rubber washer next to the fairing to try and hold them still.
No riding here for at least another 2 or 3 months
 
#139 ·
Here is what works for me: A V-Stream Touring windscreen, Rick's mirror extenders, Ebay end mirrors, and air deflectors. The small mirrors show me what's behind my torso and the big ones show blind spots and the rest. Wind noise on the sides of my helmet has be reduced about 80% and over the top, about 70%. Total cost for the items: about $225. I also have Rick's peg lowering kit which makes the ride much more comfy.

I'm taking the Glee to have the valves inspected today under 2A50 recall.
 

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#140 ·
I PM'd Augustus and sent PayPal $$$ with info but have not heard a word back from anyone... I'm disappointed at the lack of response/customer service but giving him the benefit of the doubt. I just hope the deflectors show up at my door in the near future.
 
#141 ·
Maybe you know, but he's just one guy, making these for fellow Stromptroopers as a sideline, and maybe make a few extra bucks for the hobby. He's usually very responsive, but may be delayed if out of town or on vacation.