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> Proper wing height….
sixaddict
post Jul 31 2023, 03:49 PM
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Wing has been on this car for a while….but my son prefers something a bit more conservative. As I evaluate it, height may be a bit much.
In reference to roof, where should it be. Not constrained by any rules….
Anyone with knowledge or experience able to help?
Front has Sheridan design damn/ spoiler.
Thanks…
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76-914
post Jul 31 2023, 06:24 PM
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Didn't someone post awhile back that the low mounted spoilers didn't have much effect since they weren't in the slip stream. (IMG:style_emoticons/default/confused24.gif)
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sixaddict
post Jul 31 2023, 08:36 PM
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Didn’t see it.
I had been happy with it…… ..but wanted to cross check position.
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Charles Freeborn
post Aug 1 2023, 08:41 AM
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My previous AJRS built 914 had a wing about as in your first pic. It needs to be up there in "clean air" do do much good. Just don't forget to add the front splitter as close to the ground as possible.
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URY914
post Aug 1 2023, 01:58 PM
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Higher of course is better but you need check the rules of whatever class you're running in. There maybe a limit on how high it can be.
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sixaddict
post Aug 1 2023, 08:54 PM
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10-4
Thanks
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stownsen914
post Aug 4 2023, 05:03 PM
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Wing height is a complex thing, but in general (and within reason) higher is better, especially on a car like a 914 that has relatively poor aerodynamics. Yours is probably at a good height.

There can be some advantage in a lower mounted wing on a car with underbody aero (a diffuser). Not relevant for you. See my avatar. I do have a large diffuser on my car, and mounted the wing low to allow it to interact with the diffuser.
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ssstikircr
post Aug 4 2023, 05:20 PM
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Where can I find or get a wing like that?
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Jetsetsurfshop
post Aug 6 2023, 09:09 AM
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Johnny from 9lives racing just built me one for my car. I haven't installed it yet so i don't have any pictures.
I plan on squeezing it in between the trunk and the fenders. It will mount to the back of the fenders in the trunk.
I'll add pics when I get there.
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Jetsetsurfshop
post Aug 6 2023, 09:13 AM
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(IMG:style_emoticons/default/driving.gif)
Attached File  5461_v1.pdf ( 53.71k ) Number of downloads: 136
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Jetsetsurfshop
post Aug 6 2023, 04:06 PM
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Dont use this upright template. It appears to be racked back. No real adjustment for downforce. I dont blame 9lives racing, it was my poor template i sent him.
(IMG:style_emoticons/default/confused24.gif)
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ssstikircr
post Aug 7 2023, 03:42 PM
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Please keep us posted…

Will the rear deck lid operate on the factory hinges or will you have it on pins?
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URY914
post Aug 7 2023, 05:40 PM
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I made my own.....

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914 Ranch
post Aug 10 2023, 04:27 PM
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I mounted mine 2" above the targa bar.

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I know I have a better picture somewhere.

This is really Kool, the 2 lightest 914 in world one post after each other. See
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koozy
post May 4 2024, 02:39 AM
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Depends what you are using it for. This is my autocrossing setup. Slightly above the highest part of your car. It's all about balancing the front and rear, unless you don't give a hoot about steering. This thing does ok despite the grumpy old man at the wheel.

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koozy
post May 4 2024, 02:40 AM
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How much do those lightest 914s in the world weigh?
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914 Ranch
post May 6 2024, 12:45 AM
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Somewhere I have a picture of mine at 1609. But I have plans to lose a little more. I'm going on a search for the pic. The gas tank is empty but it only holds 1.5 gallons.

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I have on hand RSR front suspension but I ran out of money again and presently working on getting new nitrogen gas shocks. I have a pair on a sand rail that I built in '91 that are still holding up the buggy. I really like the exchange, iron suspension for billet aluminum and gas.

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Shivers
post Jun 14 2024, 10:27 AM
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Ok, bit of a hijack, sorry but this is the right group. Here is my question: At what speed do these wings become effective. My car will see autocross and some spirited excursions in the canyons. So not high speeds. 50-60-ish mph. Thanks and now we will return you to your regularly scheduled program. (IMG:style_emoticons/default/blink.gif)
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technicalninja
post Jun 14 2024, 10:46 AM
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Starting to provide down force at 50-60, serious at 100 and above.

Almost nothing at 30...

Front splitters work sooner and are usually more effective.

A small splitter will need a BIG ASS wing to balance the car.

At the speeds you're running a spoiler at a serious angle would be my first choice.

Like this

https://grassrootsmotorsports.com/articles/...ps-aero-expert/

A large high angle spoiler has serious drag. Below 80 it's the ticket IMO.

It looks ghetto but gets the job done and can be stupid simple to make.

You can change the angle/length at will.

A true rear wing works like an aircraft wing upside down and needs clean air more on the bottom than top, so it needs to be higher than anything that might affect the flow across the bottom of it.

The wing will provide a better "down force to drag ratio" but is really best suited for 100+ speeds.

Above 100 the spoiler becomes a HUGE drag versus a wing.
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Shivers
post Jun 14 2024, 05:07 PM
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QUOTE(technicalninja @ Jun 14 2024, 09:46 AM) *

Starting to provide down force at 50-60, serious at 100 and above.

Almost nothing at 30...

Front splitters work sooner and are usually more effective.

A small splitter will need a BIG ASS wing to balance the car.

At the speeds you're running a spoiler at a serious angle would be my first choice.

Like this

https://grassrootsmotorsports.com/articles/...ps-aero-expert/

A large high angle spoiler has serious drag. Below 80 it's the ticket IMO.

It looks ghetto but gets the job done and can be stupid simple to make.

You can change the angle/length at will.

A true rear wing works like an aircraft wing upside down and needs clean air more on the bottom than top, so it needs to be higher than anything that might affect the flow across the bottom of it.

The wing will provide a better "down force to drag ratio" but is really best suited for 100+ speeds.

Above 100 the spoiler becomes a HUGE drag versus a wing.


Thank you. So something like cab plates on the back of an inboard.
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