Miata Flat Underbody
#122
Under tray, under engine
Hey "cordycord" is your undertray just to fit under the engine or is it also a splitter also. The resin I'm asking is because, I'm going to finish my underbody when I get back and I'm going to have the front section in 3 pieces. The front undertray, a 3" airdam and the splitter. What thickness are you running on the undertray, because I was thinking of using Alumalite for it.
At present there's no tray under the engine.
#123
Senior Member
Thread Starter
Join Date: Oct 2011
Location: The Race Track & St Pete FL
Posts: 638
Total Cats: 57
The only thing about air jacks is that they are so expensive as a kit, but since I am a hydraulics guy that works on C-130's I don't think it would be hard to make a air system for a car.
cordycord-- Ok I working with .063 and I might use it under the engine or use the rest of my 5x12 sheet to make duct work for air in the rear wheel wells.
Any have the measurements from the widest the front bumper gets and from the steering rack to the edge of the front bumper
cordycord-- Ok I working with .063 and I might use it under the engine or use the rest of my 5x12 sheet to make duct work for air in the rear wheel wells.
Any have the measurements from the widest the front bumper gets and from the steering rack to the edge of the front bumper
#136
I'm going to be building a flat underbody for my miata within the next few weeks, but I have a few questions before I dive into this whole process.
1) My biggest issue is where and how you guys are mounting the panels? I was thinking of mounting the panel over the outside of the frame rails and then on some of the bracing but some more insight on this particular topic would be much appreciated.
2) I see some people having the entire underside covered while others have a channel for the exhaust. What are the pros/cons to each one? If I decide to cover the entire underside, would I have to bend the panel in order to fit over the exhaust or what?
3) What material are you guys using? I've read that 2mm 5052 aluminum is perfect. Is this the correct thickness/grade aluminum?
I'm sure I'll have some more questions once I dive into the process, but this is all I can think of at them moment.
1) My biggest issue is where and how you guys are mounting the panels? I was thinking of mounting the panel over the outside of the frame rails and then on some of the bracing but some more insight on this particular topic would be much appreciated.
2) I see some people having the entire underside covered while others have a channel for the exhaust. What are the pros/cons to each one? If I decide to cover the entire underside, would I have to bend the panel in order to fit over the exhaust or what?
3) What material are you guys using? I've read that 2mm 5052 aluminum is perfect. Is this the correct thickness/grade aluminum?
I'm sure I'll have some more questions once I dive into the process, but this is all I can think of at them moment.
#139
I'm going to be building a flat underbody for my miata within the next few weeks, but I have a few questions before I dive into this whole process.
1) My biggest issue is where and how you guys are mounting the panels? I was thinking of mounting the panel over the outside of the frame rails and then on some of the bracing but some more insight on this particular topic would be much appreciated.
2) I see some people having the entire underside covered while others have a channel for the exhaust. What are the pros/cons to each one? If I decide to cover the entire underside, would I have to bend the panel in order to fit over the exhaust or what?
3) What material are you guys using? I've read that 2mm 5052 aluminum is perfect. Is this the correct thickness/grade aluminum?
I'm sure I'll have some more questions once I dive into the process, but this is all I can think of at them moment.
1) My biggest issue is where and how you guys are mounting the panels? I was thinking of mounting the panel over the outside of the frame rails and then on some of the bracing but some more insight on this particular topic would be much appreciated.
2) I see some people having the entire underside covered while others have a channel for the exhaust. What are the pros/cons to each one? If I decide to cover the entire underside, would I have to bend the panel in order to fit over the exhaust or what?
3) What material are you guys using? I've read that 2mm 5052 aluminum is perfect. Is this the correct thickness/grade aluminum?
I'm sure I'll have some more questions once I dive into the process, but this is all I can think of at them moment.
2. Covering the whole underside would yield the best results, but you'd have to deal with heat from the trans/exhaust/diff. A few well place NACA ducts to feed air into the hot parts would be enough.
3. Material is all up to you. 5052 bends very well if wanted that. CF/foam/nomex core, alumalite are also good choices.
4. I don't see why that wouldn't work, actually I think Moti's underpanel on Morpheus is mounted this way.
#140
Right on, how many did you do on each frame rail and what size did you use? If you don't remember it's not big deal, I'm assuming the size of the weld nut isn't THAT important right?
Right on! Thanks for the advice. I was definitely planning on doing NACA ducts to all 3 mentioned heat spots. What I'm curious about, is the fact that my exhaust seems to be lower than my frame rails. How do people get around this? I'm not 100% positive but i'll have to double check.
1. Mounting it to the frame rails seems like the best bet. On Ryan's car, he initially welded tabs to the frame rails to hold his underpanel.
2. Covering the whole underside would yield the best results, but you'd have to deal with heat from the trans/exhaust/diff. A few well place NACA ducts to feed air into the hot parts would be enough.
3. Material is all up to you. 5052 bends very well if wanted that. CF/foam/nomex core, alumalite are also good choices.
4. I don't see why that wouldn't work, actually I think Moti's underpanel on Morpheus is mounted this way.
2. Covering the whole underside would yield the best results, but you'd have to deal with heat from the trans/exhaust/diff. A few well place NACA ducts to feed air into the hot parts would be enough.
3. Material is all up to you. 5052 bends very well if wanted that. CF/foam/nomex core, alumalite are also good choices.
4. I don't see why that wouldn't work, actually I think Moti's underpanel on Morpheus is mounted this way.