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Technical Information => Fabrication => Topic started by: Nfinitecc on December 26, 2017, 10:02:29 AM

Title: Riv-nuts, appropriate for a front splitter?
Post by: Nfinitecc on December 26, 2017, 10:02:29 AM
I debating using 6 rivnuts to secure my front splitter to its chassis mount for ease of access once the plastics are all installed. I'm concerned because they'll be mounted from the bottom and it would suck if they pull out. Then again In a wreck, it would be a plus to pull out the rivnuts instead of tweaking the front end. It would be steel inserts on steel, using the mechanical wheel style install tool, not the lever gun.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: Cobranut on December 26, 2017, 03:49:05 PM
Rivnuts, if properly installed, are very reliable and strong.
I see no problem using them to mount a splitter.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: digitalsolo on December 26, 2017, 10:39:40 PM
Use the ones made for plastic.   Much more surface area.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: Nfinitecc on December 27, 2017, 12:01:50 PM
Thanks for the input, I wanna find the manual screw type tool, I read that they compress much better than the pull type
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: digitalsolo on December 27, 2017, 12:34:49 PM
I use one of these:

https://www.amazon.com/AVK-Industrial-AA181-420-Expandable-Thread/dp/B06XG51LH5/ref=sr_1_1?s=industrial&ie=UTF8&qid=1514395944&sr=1-1&keywords=rivnut+tool (https://www.amazon.com/AVK-Industrial-AA181-420-Expandable-Thread/dp/B06XG51LH5/ref=sr_1_1?s=industrial&ie=UTF8&qid=1514395944&sr=1-1&keywords=rivnut+tool)

They suck if you're doing like, 400 rivnuts, but if you do a few now and then, they do a GREAT job and they're mucho-cheaper.

Here are the "for plastic/composites" style I was talking about:

https://www.mcmaster.com/#rivet-nuts/=1av9li1 (https://www.mcmaster.com/#rivet-nuts/=1av9li1)

edit:  Link doesn't work right, but if you go into the categories, "Rivet Nuts for Plastic and Composites" is the type I'm talking about.

Those are a little easier to install (they 'give' easier) and you can just use a regular bolt and a lock washer/regular washer stack for them.   They're great for urethane bumpers or thin sheetmetal, just remember you need more clearance around them.   I sometimes stack a washer in the back, as they can tolerate a lot of variance in materials thickness.

I love rivnuts.  A lot.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: Nfinitecc on December 27, 2017, 01:57:56 PM
McMaster Carr , the official supplier of Norotors lol, its been awhile since I finished and sold my FD, I forgot about McMaster! I ordered the composite RivNuts thanks for the link. I'm building a S2000 in the meantime while I save for my kitcar dreams.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: digitalsolo on December 27, 2017, 02:12:48 PM
McMaster-Carr and Metal Supermarkets are like, my favoritest places.   LOL    The girls at Metal Supermarket locally all know me by name, hahaha.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: Cobranut on December 27, 2017, 11:22:21 PM
McMaster is good for hard to find stuff, but I usually exhaust all other options first.

They won't give you a shipping quote until after you've placed the order.
I just bought a couple small heims and aluminum tube to make a remote handle for my battery master switch on the racecar.
For $11 worth of parts, they charged me over $26 shipping.   >:(
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: wickedrx7 on December 28, 2017, 08:48:02 AM
I love McMaster and it is only 10 minutes from my house so I donít have to pay their stupid shipping charges.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: Cobranut on December 28, 2017, 06:56:32 PM
I love McMaster and it is only 10 minutes from my house so I donít have to pay their stupid shipping charges.

Must be nice.  NOTHING is 10 minutes from my house.  LOL
I do like my space though.   8)
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: Nfinitecc on January 18, 2018, 08:55:15 PM
Ok they're installed, I'm a little nervous about it , the grip range is within spec for my 1/8" thick brackets, I wish I had more overlap in the bulge. But it does have a steel bracket left and right, and a turnbuckle front-center. If it pulls out then I'd be surprised.
(http://i1259.photobucket.com/albums/ii553/WStanford5/IMG_0548_zpslymgflfx.jpg) (http://s1259.photobucket.com/user/WStanford5/media/IMG_0548_zpslymgflfx.jpg.html)
(http://i1259.photobucket.com/albums/ii553/WStanford5/IMG_0542_zpspucjiolt.jpg) (http://s1259.photobucket.com/user/WStanford5/media/IMG_0542_zpspucjiolt.jpg.html)
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: largeorangefont on January 18, 2018, 11:37:43 PM
Run it. I donít think that is going anywhere. Do those guys have an FC or FD product?
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: Nfinitecc on January 20, 2018, 10:08:45 PM
They sell products for the FD but not splitter brackets, seem like they could be easily modified for anything given the height adjustment. I'll post up some photos of the project soon, my OCD is dragging this out way longer than it should have.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: Supe on January 21, 2018, 06:15:03 PM
Can always tack those in if you're worried about them.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: Nfinitecc on January 21, 2018, 06:48:39 PM
If only I could weld! I've told myself I'll learn one day.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: Supe on January 21, 2018, 07:49:42 PM
Even a semi-inebriated buddy with a Harbor Freight MIG can take on that one!
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: Nfinitecc on January 22, 2018, 02:28:42 PM
Ok the idea was I wanted the splitter removable,without removing any of the OEM plastic trays and shrouds, bumper mounting points, clips, anything. Got everything mounted, now I'm gonna resin skim the splitter, attach some stainless sheet on the mounting points and coat it in SEM euro trim black.
(http://i1259.photobucket.com/albums/ii553/WStanford5/IMG_0558_zpsjgnqflzz.jpg) (http://s1259.photobucket.com/user/WStanford5/media/IMG_0558_zpsjgnqflzz.jpg.html)
(http://i1259.photobucket.com/albums/ii553/WStanford5/IMG_0565_zpstvqg4wzy.jpg) (http://s1259.photobucket.com/user/WStanford5/media/IMG_0565_zpstvqg4wzy.jpg.html)
Car is going to the body shop next week to install a spoon fast-back hard top and a GTC-300. Installed a set of Ohlin DFV's before this pic.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: digitalsolo on January 22, 2018, 03:03:45 PM
That's a cool setup!   I need to build a splitter for my car, I may steal some ideas from that.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: largeorangefont on January 22, 2018, 10:19:59 PM
I am going to to something similar, but Iím going to use quick release locking pins to attach the splitter.

I want a full under tray on the car when no splitter is attached like you will have.

That looks good.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: atli126 on January 24, 2018, 09:30:59 AM
how did this turn out? have you driven it much yet?

Please add a link to the product you all were referring to.

Edit, just saw the pics looks very cool :cheers:
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: freeskier7791 on January 24, 2018, 11:13:56 AM
Nice job
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: Nfinitecc on January 24, 2018, 12:18:30 PM
Thank you, I have driven on it some and with the air dam installed between the splitter and bumper I can feel the understeer over 70mph. I haven't finished because of the non stop rain and freezing temps! That SEM trim coat will fog up easy in the humidity. Car is going to the body shop next Wednesday to have the hardtop skimmed, blocked and painted. Hopefully I'll have the splitter finished by the time it comes back.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: iStubz on May 21, 2019, 02:25:57 AM
Nope go ahead and take all of those out. Just tried this same thing and it ripped every last rivnut out. Flanged side needs to be on top, otherwise nothing stops it from pulling itself down when that splitter gets some downforce over it.
Load needs to be on the bracket, not the splitter. Flip them if you have a thick enough splitter, thatís what I did.
Title: Re: Riv-nuts, appropriate for a front splitter?
Post by: frijolee on May 21, 2019, 06:06:58 AM
Nope go ahead and take all of those out. Just tried this same thing and it ripped every last rivnut out. Flanged side needs to be on top, otherwise nothing stops it from pulling itself down when that splitter gets some downforce over it.
Load needs to be on the bracket, not the splitter. Flip them if you have a thick enough splitter, thatís what I did.

A washer under the knurled side works wonders for tear through situations, FYI.