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Crusher-type bumper pics needed.
I'm getting a shitty bumper and I want to make a Crusher bumper for my green car but I have no idea how to do it. Please share the pics of your construction.
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Look in my world record thread.
If there isn't all of the good pics there I'll add the rest here. When I get home. Dann |
there is a whole diy aero thread with pictures of bumpers.
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Originally Posted by ctdrftna
(Post 990277)
there is a whole diy aero thread with pictures of bumpers.
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Does it matter? Be creative !!
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Is it a 'glass bumper?
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Do not use home depot aluminum roof flashing. I'm pretty sure a condom stretched across the front end would hold up better.
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Originally Posted by jpreston
(Post 990315)
Do not use home depot aluminum roof flashing. I'm pretty sure a condom stretched across the front end would hold up better.
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Originally Posted by nitrodann
(Post 980116)
Ok here are the aero results., not QUITE finished but a good effort for one day I think.
The car has a garage Vary lip but not anymore. https://www.miataturbo.net/attachmen...ine=1361174162 Angle grinder. https://www.miataturbo.net/attachmen...ine=1361174162 Rivnuts (nutserts) and flush allen key hardware, 10.9 tensile. https://www.miataturbo.net/attachmen...ine=1361174162 Using a pair of factory M6 threads and another 2 rivnuts in the subframe. https://www.miataturbo.net/attachmen...ine=1361174162 Rough cut 1/2" ply. https://www.miataturbo.net/attachmen...ine=1361174162 I weight 100kg and you can stand on the mofo, and even bounce on it. https://www.miataturbo.net/attachmen...ine=1361174162 https://www.miataturbo.net/attachmen...ine=1361174162 The front most bracket, rivnuts in the body and rivnuts in this bracket. https://www.miataturbo.net/attachmen...ine=1361174162 https://www.miataturbo.net/attachmen...ine=1361174162 Steel flatbar to reinforce the bottom of the PVC front bar. The black plastic just in front of the tyre was removed after this shot. https://www.miataturbo.net/attachmen...ine=1361175594 Cutting out the wood for a rough starting shape, after the rear wing has been given proper sized endplates, the front splitter will be cut down until the front/rear downforce is similar. https://www.miataturbo.net/attachmen...ine=1361175594 https://www.miataturbo.net/attachmen...ine=1361175594 Front bar PVC sheet clamped on test fitting, ready for nuts bolts and white sikaflex. https://www.miataturbo.net/attachmen...ine=1361175594 https://www.miataturbo.net/attachmen...ine=1361175594 https://www.miataturbo.net/attachmen...ine=1361175594 https://www.miataturbo.net/attachmen...ine=1361175594 https://www.miataturbo.net/attachmen...ine=1361175594 https://www.miataturbo.net/attachmen...ine=1361175594 The wing mount, this MAY stay permanent depending how well it works, the boot has been braced with 3mm steel plate. https://www.miataturbo.net/attachmen...ine=1361175594 Top bolts in and cutting the excess. https://www.miataturbo.net/attachmen...ine=1361175594 The removed the protective layer to reveal nice shiny white PVC front bar. https://www.miataturbo.net/attachmen...ine=1361175594 https://www.miataturbo.net/attachmen...ine=1361175594 Here it is almost done, I drove it like this. https://www.miataturbo.net/attachmen...ine=1361175594 https://www.miataturbo.net/attachmen...ine=1361175594 https://www.miataturbo.net/attachmen...ine=1361175594 https://www.miataturbo.net/attachmen...ine=1361175594 Check the phone, yeh its pretty low. Should be efficient. https://www.miataturbo.net/attachmen...ine=1361175594 https://www.miataturbo.net/attachmen...ine=1361175594 https://www.miataturbo.net/attachmen...ine=1361175594 It needs the flat bar bonded and bolted to the bottom and a pair of braces for the widest points of the splitter. I intend to take a sawzall to the track and cut the splitter down until front/rear downforce bias is neutral. Its very low, check the picture with the phone on the ground to show its height, this is a big screen LG phone. Its about 80mm. The owner will make cardboard templates for the radiator/IC ducting and I will make it and fit it (more rivnuts). The intake opening was just rough cut so it could be driven. I threw in some extra fuel to get it driveable and check everything worked right. Its is the most responsive car Ive ever driven, its great, Im super super happy with it. On 10 PSI with 17x9 slicks It spins 3rd no hastles at all. They were cold though. Its telepathic in boost reposnse and spins 2nd from 2500rpm so low/mid torque is great. Dyno by the weekend. Dann https://www.miataturbo.net/attachmen...ine=1361682130 Dann |
Use rivet washers where you rivet the ABS to the bumper. If not they will pull out.
I used only the two front existing mount points on the subframe, not the additional ones in the rear... and then I used turnbuckles in front instead of the framework in front of the intercooler. This allows the splitter to pivot upwards and just bend the ABS when it bottoms out... it has saved the whole assembly many times. I also used two more turnbuckles, one in front of each tire to support the corners of the splitter. Ohh, and keep both the air damn and the splitter as close to the wheels as possible without rubbing at full droop. The more coverage the better for aero. |
I'm not making a splitter so I'm not sure how to do the bottom part. At this point, I'm not sure I'm making anything, but giving it consideration.
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1 Attachment(s)
I'll see your classic "I stand on my splitter to test its strength" and raise you a "Put all three of my roommates on my splitter at once"
Snapped this pic today. New splitter/splitter frame and EP style bumper. 480 lbs on the front lip: https://www.miataturbo.net/attachmen...ine=1363584687 |
Haha, nice!
Hustler. Even if you don't want a splitter, I'd build an undertray out of some thin plywood. It will support the EP style nose and improve aero. If you REALLY don't want an undertray, you could just run a couple pieces of angle iron to the bottom front of the ABS to support it. You'd also probably want to run some sort of aluminum support (like a bent flat bar) all the way around the bottom lip of the ABS, because its pretty flimsy |
Originally Posted by Handy Man
(Post 990697)
You'd also probably want to run some sort of aluminum support (like a bent flat bar) all the way around the bottom lip of the ABS, because its pretty flimsy
https://www.miataturbo.net/attachmen...ine=1361175594 Like in above photos. In the photo it looks like I weigh more than all 3 together pass haha. Good job whats it made of? Mines just scrap ply with the grain running across the car, the grain is the weakpoint at this stage. Dann Dann |
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Originally Posted by hustler
(Post 990611)
At this point, I'm not sure I'm making anything, but giving it consideration.
https://www.miataturbo.net/attachmen...ine=1363616593 |
Originally Posted by nitrodann
(Post 990708)
[IMG]
In the photo it looks like I weigh more than all 3 together pass haha. Good job whats it made of? Mines just scrap ply with the grain running across the car, the grain is the weakpoint at this stage. Dann -Ryan |
"thumbs-up" = poz
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I can help you build one of these in Houston one weekend.
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Thanks but the car can't go to Houston. :'(
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1 Attachment(s)
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