I have some splitter mounts I’m selling

[CrookedCommie]

Yeah they are steel. I gave it the old stand on the splitter test and was pretty solid.

Had the splitter upside down discussion, the front leading edge is not designed like a wing, so I think it is the correct way. I know bimmerworld says flip it the opposite. Artisan designed it this way as it came assembled with the tunnels.

[bigjae46]

My WRL buddies are using the build journal mounts, I don't think they are having issues with them.

I put in the racebred mounts, I flipped them around so the pin can be pulled from the wheel well by reaching in. Makes it a bit harder to slide the splitter back on. They seem really robust and are pretty heavy.

Those are steel, correct? I think the BJ mounts are steel as well. I know the BW standoffs are also steel. I once made aluminum standoffs and they didn't last long.

The problem I am having now is rust. I need to find a stainless coupler nut, leftand right-hand threaded studs or replace the steel parts periodically.

BTW, I think your splitter is upside down. The back edge of the splitter should be a low-pressure zone. Getting more volume of air under the front edge of the splitter will further accelerate the velocity of air under the car and lower the pressure zone at the back edge of the splitter which will equal less overall lift. Either way, not sure if will make a huge difference.

[CrookedCommie]

My WRL buddies are using the build journal mounts, I don't think they are having issues with them.

I put in the racebred mounts, I flipped them around so the pin can be pulled from the wheel well by reaching in. Makes it a bit harder to slide the splitter back on. They seem really robust and are pretty heavy.

[bigjae46]

Yes, no change to my splitter mounting. Took a big hit earlier this year and nothing bent.

I'd stick with something that is steel. Aluminum bends too easy. But you can also get all of that Buildjournal stuff from eBay for half the price.

[OldRanger]

Ok! The time is now. I’ve got a BW rear wing on order and want to sort out what to do about a splitter up front.

The goal is to learn…through a process how aero changes the game.

bigjae46 are you still using this splitter mounting setup? I’ve been looking at commercially available splitter mounts and only finding the BuildJournal option available…if that’s even a real thing.

[bigjae46]

Do you have to tape the chin spoiler area or how do you get enough torque on the stanchions to keep a seal?

The supports are adjustable so the splitter is flush against the bumper. I can't be 100% sure if the splitter isn't flexing downward but I've never scraped the front of the splitter under braking from high speeds. I highly doubt it because I'd have a ton of pebbles and rubber to clear out from the reinforcement plate if it was creating a gap.

[AXDB]

Do you have to tape the chin spoiler area or how do you get enough torque on the stanchions to keep a seal?

[bigjae46]

Love it! If you do decide to make another one and want to see me that one let know!

I'd rather just make a new one for you. The one on the car has endured two major oil leaks. The top side cleans up really well, the bottom which is the textured matte side doesn't.

[SandeepM3]

Love it! If you do decide to make another one and want to see me that one let know!

[bigjae46]

This is very cool! Did you make that yourself? What's the weight saving?

Made it myself. Saves about 4 lbs but it’s stiffer. That is a lot of layers of carbon. I think I could make it even lighter with added stiffness by using a core material, just haven’t tried yet. I'd also leave more material on the front edge so I could bond the c-channel.

[SandeepM3]

Here is the back mount. It is c-channel aluminum. I replaced the OE hardware and bonded an M8 nutset to the backside. The reinforcement plate is carbon so this works really well. While there is load on this point, the splitter is being pushed upwards - the level effect on the front half of the splitter. The OE aluminum plate will also be fine.



All of the parts were bought from McMaster Carr or eBay - Spent about $100 on everything.

This is very cool! Did you make that yourself? What's the weight saving?

[OldRanger]

Very cool - thanks for sharing. I read your build thread and quite impressed. Someday - maybe for my car.

[bigjae46]

Here is the back mount. It is c-channel aluminum. I replaced the OE hardware and bonded an M8 nutset to the backside. The reinforcement plate is carbon so this works really well. While there is load on this point, the splitter is being pushed upwards - the level effect on the front half of the splitter. The OE aluminum plate will also be fine.



All of the parts were bought from McMaster Carr or eBay - Spent about $100 on everything.

[bigjae46]

Very cool. Can you show us a picture of your splitter?

Here is the splitter and mounting

This is the two outer mounts. Ebay shock and clevis joint ($40) and pins/clips from McMaster Carr




Here are the primary mounts. There is a coupler nut welded to a tab which is riveted and bonded to the carbon plate. Then there is an aluminum turnbuckle with a spherical eye at the bottom. Attaches to the splitter using a pin and clip. Might be hard to see but I installed rivet nuts for the M6 bolts.



I bonded aluminum T channel to the splitter. Also used a two piece sleeved screw thingie...forget the name. Have to have the thickness spot on though - WITH LOCTITE!!! All of this stuff vibrates a lot so things come loose.

The pin goes through and voila - splitter is secured!



Here's splitter...

[bigjae46]

Shows the final mounting...

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