Embedded Files
The Horn Holder
The Horn Holder
I made this as a solution to save myself from spending $60-70 on an horn ring! This part holds the "NRG" style horn button on an "NRG" style wheel, while adding a 2.2mm spacer(really small). It fits between the wheel and the hub. This item is made with PLA with an 100% infill. This does not include the horn button, steering wheel, or hub.
Here's How I Did It:
Here's How I Did It:
The previous owner had an NRG Wheel
The previous owner had an NRG Wheel
I want to be clear this is not my first choice of wheels but when you get a great deal on an MR2 Spyder beggars cannot be choosers. I guess when the previous owner bought it bro was like "eh it's a racecar who needs a horn?". Needless to say, after a few weeks of daily driving this smol bean of a car multiple people tend to not check their mirrors and love to merge into my car without looking. The last straw was a trip with da homies to New York/New Jersey for the annual Bear Mountain MR2 meet. Driving 6.5 hours away + NY driving meant I NEED a horn. This was at the end one of the many tests of my automotive knowledge and abilities.
The Spyder I bought for less than $6k
The Spyder I bought for less than $6k
(thanks to whoever took this and left it on my car!)
(thanks to whoever took this and left it on my car!)
So I bought the Horn Button
So I bought the Horn Button
Took the wheel off and the hub, and upon mounting I found out that the horn really is just floating in place without a ring. Multiple rings are available, but I'm not going to lie to you I'm a broke college student so even though I can afford a $60 ring I'm just not going to pay for that.
Made a quick .stl file of the part
Made a quick .stl file of the part
Using a digital caliper I measured the holes, the inner diameter of the wheel, and the outer diameter of the button. Overall, this portion took me about 5 minutes as this is what I enjoy doing.
Testing!
Testing!
As you might see this part does act partially as a washer. I did this mainly because my steering wheel screws would be sticking out due to the adapter/extension the previous owner had. This means it's important to make sure this won't break. Using the 3D Software I was able to test the strength and at what force & temperature this will break at. Even in a major collision this part will not fracture unless there is a fire. That being said this is only for racing purpose only.
Wiring :)
Wiring :)
I found that the most of the wires were already there on the short hub, the only thing I had to do was connect it. I did have to do the "paperclip" method for grounding the horn (not ideal but it's been working for the past 2 months and 20k miles so I'm not knocking it.)
Paperclip method involves grounding the NRG horn with a paperclip. Electrical tape to prevent completing the circuit, as the paperclip is pressed up against the backside of the NRG hub. In my defense to a slightly sketchy method: At least I soldered the paperclip :)
Paperclip method involves grounding the NRG horn with a paperclip. Electrical tape to prevent completing the circuit, as the paperclip is pressed up against the backside of the NRG hub. In my defense to a slightly sketchy method: At least I soldered the paperclip :)
(more detailed drawing on the paperclip method)
(more detailed drawing on the paperclip method)
End result? Has a neat finish, almost like it's supposed to be like that! I was able to make it to the bear mountain meet without getting runover (I paid for the horn I'm gonna use the horn).
Let me know if you have any questions! Or if you want to see more content/products!
Let me know if you have any questions! Or if you want to see more content/products!
-Cam
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