My ProjecTee

[Indycars]

BTW, you may have noticed I used 27.1 inches for the diameter, that's because when I looked up the specs
for the BRIDGESTONE POTENZA 255/45R 18 this is what I found.

 

[DonnyRay]

I found that measurement also from America's Tires website. My original measurement of 25.50 came from measuring the tire with my tape measure. The tire was NOT mounted & inflated.

 

[DonnyRay]

I'm still waiting for my body insert & seat insert from Spirit Cars and my 14" high windshield from Ron Pope Motorsports.

 

[Indycars]

I found that measurement also from America's Tires website.

OK, I thought maybe you transposed the last two numbers. I got my numbers from the The TireRack. I can redo the chart if you like, it's not hard ???

 

[DonnyRay]

No it's okay.

 

[DonnyRay]

Took some photos today : I'm making attachments places for the track t nose. I will use RivNuts to fasten the fiberglass sections to the frame & the front ( round ) tube.

 

[Indycars]

I will use RivNuts to fasten the fiberglass sections to the frame & the front ( round ) tube.

I found them in SS on Amazon. The link includes sizes from 8-32 to 3/8-16 and metric.

www.amazon.com/gp/product/B07GDZ9HGD/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

 

[DonnyRay]

I've used them in the past. I think they were aluminum. I think i'll give the stainless steel ones a try.

 

[choppinczech]

I use a lot of rivnuts at work for hogged out holes in thin steel and aluminum. These lever type tools really help with 5/16" and larger.

 

[old round fart]

I’ll bet installing stainless fasteners will make a man out of you!

 

[DonnyRay]

I went to a large warehouse ( supplies local farmers ) that's called J. Milanos. All i found was steel & aluminum RivNuts. I went home with some aluminum ones 1/4" x 20's. The steel RivNuts will probably rust , at least the aluminum RivNuts won't .

 

[fletcherson]

I went to a large warehouse ( supplies local farmers ) that's called J. Milanos. All i found was steel & aluminum RivNuts. I went home with some aluminum ones 1/4" x 20's. The steel RivNuts will probably rust , at least the aluminum RivNuts won't .

Use anti seize to prevent steel bolts from reacting... perhaps stainless bolts.

 

[old round fart]

Biggest problems I had was over sized holes. Try using the step drills to get the hole round or drill undersized and ream to size. They are a pain in the butt when they spin.

 

[Neshkoro]

Mc Master offers both round and hex shaped ones. The hex won’t allow the rivnut to spin. The hard part is punching the hex hole without the proper equipment.

 

[choppinczech]

Biggest problems I had was over sized holes. Try using the step drills to get the hole round or drill undersized and ream to size. They are a pain in the butt when they spin.

Yes the hole size is crucial. Sometimes even letter size drill bits are required.

 

[DonnyRay]

What if i use a caliper to determine the width of the RivNut ? I've installed RivNuts before on earlier projects. Didn't have any problems. I start with a small drill bit then i graduate up to the right size. I think that was my strategy a few years ago. Really don't remember.

 

[old round fart]

That would work. You might use lock tight too. I used 4 half inch nuts to hold a rear sway bar on a race car so they can hold some weight. Of course the frame was about .200” thick.

 

[choppinczech]

What if i use a caliper to determine the width of the RivNut ?

That would work fine. These drill bit gauges help too. The tighter initial fit the better.



This type of lock washer can keep them from spinning in fiberglass.

 

[choppinczech]

Yours might be like these that need a 25/64" hole.
McMaster-Carr

 

[DonnyRay]

I'm going to drill through the fiberglass & into the frame The fiberglass will be anchored to the frame ( 3/16" thick frame ). A good tip on the lock washer Choppinczech.