Spyder Wind Deflector

drewf

Member
Messages
7,159
As mentioned yesterday, the trip to Oulton yesterday was the first proper test of my prototype DIY wind deflector for the Spyder.

History - bought the Spyder without a wind deflector, then discovered two things: they are virtually impossible to source, and go for silly money on the second hand market. Obviously, the moment I made this unit, one appeared on eBay... It's still there (at ~£500) if anyone else wants to buy one for that price.

Also, I don't really like the mesh deflectors in any car. They reduce visibility, and although they work fairly well, I didn't consider I could make one. What I can do though, is work with Lexan sheets :)

So.... A bit of measuring later, a rough cardboard template was made. From this, I made another, better, cardboard template which had the correct dimensions, including the bottom curve where the body meets the roll bars.

This was then transferred to a 10mm optically perfect UV stabilised Lexan sheet. 10mm sheet is very stiff indeed, and trials have proven to me that it could be made from thinner material (cheaper) without any issue. I also need to put a final polish on the finished visible edges (using alcohol to get the cuts glass-clear). The bottom edge has a piece of 10mm rubber edge seal to ensure there are no scratches to the car - that simply presses into place.

The final installation is intended to be mounted using 6 stainless steel glass mounts, directly to the roll bars. The painted covers can be removed, revealing a simple steel internal tube. I'm going to mount pipe brackets to this, inside the painted/leather covers, and have the glass mounts protrude slightly proud of the rear surface. Then the whole thing is reassembled, leaving 6 female stainless screw threads to accept the other half of the fitting, clamping the polycarb sheet. I've got some sample mounts, so all I'm missing is the 'round tuit' aspect.

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So... here is the current installation, using dual sided velcro and zip-ties. I can confirm that it's completely rattle and squeak free, and the hood can be raised and lowered without removing it. In use, it works very well indeed, and is virtually invisible through the rear-view mirror.


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rs48635

Member
Messages
3,181
Nice work.
Anyone with roof down would benefit from one of these, especially touring or "in-transit".
Fancy one for my little rroadster. Might cost more to make thnn my MX-5 is worth though ;)
 

drewf

Member
Messages
7,159
Nice work.
Anyone with roof down would benefit from one of these, especially touring or "in-transit".
Fancy one for my little rroadster. Might cost more to make thnn my MX-5 is worth though ;)

Not very spendy to make Rob, especially if 6 or 8mm sheet is used :)
 

hodroyd

Member
Messages
14,150
That looks top notch Drew and if it does not fly off at triple figures, even better..!!:wink:
 

Mr.Cambio

Member
Messages
7,096
Nice job Drew.

One tip from me, please pay attention, not to clean the lexan with alcohol. It will make it lose its brightness.

Great also that you'll remove the velcro tape and tire ups and replace it with adapters.
 
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drewf

Member
Messages
7,159
Thanks for all the good words chaps :)

It didn't take long to make, and no special tools needed.

Nikos - the intention is to just rub an alcohol-soaked cloth over the cut edges just once. This should melt the polycarb a little and leave it glass clear. I'll make sure it gives the finish I want on some off-cuts first though.
 

zagatoes30

Member
Messages
21,062
It works and is cheaper than the real thing - what's not to like.

Mine has the real thing but are they really £500 :shocked:
 

drewf

Member
Messages
7,159
That looks top notch Drew and if it does not fly off at triple figures, even better..!!:wink:

Clearly I've only driven on public roads with it, so have no idea what might happen above 70mph... I can however confidently report that at 110 [insert your own units] it's absolutely fine ;)
 

CatmanV2

Member
Messages
48,947
I made some speakers out of Lexan once. 10mm is pretty damned tough.

Though I had to polish the edges with wet and dry down to 1200 and then brasso

C
 

Ray_MV

New Member
Messages
5
I think I may still have an OEM wind deflector for my old Spyder lying around. I had two with the car for some reason. PM me if interested and I will see if I can find it - I definitely don't want £500 for it!