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Old 07-11-2010, 01:16 AM   #1
theknurl
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Quote:
here is Joe's bike (mv2envy);
http://www.mvagusta.net/forum/showth...t=32353&page=6
post #52
just epoxy them in and NO worries

PLEASE EVERYONE DO THIS! and avoid possible catastrophic engine failure.....

unless you want to go through what hitcho73 did....look the thread up......

thanks for the pictures Joe!

Noel-theknurl
I found this info on the Aircraft Spruce Site..

Is this a viable alternative to gluing the rivenuts in ?
joe

The Rivnut is a one-piece internally threaded and counterbored tubular aluminum rivet that can be pulled up or headed while working entirely from one side, forming a bulge or head on the blind side. This upset is large enough to resist being pulled through metal or plastic even under conditions of eccentric load. It overcomes the difficulty of installing brackets, handles or other attachments to tubular pieces.

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Originally Posted by gotojoe View Post
I found this info on the Aircraft Spruce Site..

Is this a viable alternative to gluing the rivenuts in ?
joe

The Rivnut is a one-piece internally threaded and counterbored tubular aluminum rivet that can be pulled up or headed while working entirely from one side, forming a bulge or head on the blind side. This upset is large enough to resist being pulled through metal or plastic even under conditions of eccentric load. It overcomes the difficulty of installing brackets, handles or other attachments to tubular pieces.
Yes Joe, those are the one's I use. I alsp use them on my swing-arm hugger, and chain guards etc. Very handy to have around the house, also sold by WYRT and RS-Radio Spares or any auto spares place.

Just found this thread and it hits home as I took those little covers off for the first time to trim my TB air bleeds and already two of the rubber wellnuts were ripped and about to fall off. I followed the advice of Donsy and Noel and got meself some rivnuts and squeezed them into place. I borrowed a tool from work (lot's of mechanics at my work ) but it only utilized standard sizes (not metric), so I chose a slightly bigger size than the M4 that came with the bike as to be able to use the tool. The rivnut size I used was #10 24x0.475 and the screw was a #10x24x0.625 (or possibly 0.75 :/). And is that really English/Standard or some other weird convention? #10? Anyway the rivnut fits nice and snug into the airbox holes BUT, because the rivnuts squeeze up to the airbox holes properly (unlike the rubber wellnuts that can bend inside the hole), I had to oval out the holes in the plastic covers a bit to be able to align the screws into the rivnuts, not a big deal though. Basically, I got free shite from work and made it fit. Oh and to clarify, I did not use the rivnuts that came with the kit as they did not have a lip to seat in the airbox holes. The rivnuts pictured I sourced from our hardware bins. Here is a photo log of my installation:

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Old 07-11-2010, 01:22 AM   #2
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Thanks for the rivet nuts! If it werent for those, I would have had to make a trip to Pro Italia to buy those damn rubber ones again just to have them fail the next time I take out the injector covers.

guys, installation is very easy, just mix up some JB-Quick (5 minute version of JB Weld) and put a ring of JB around the rivet nut, insert into the airbox turning it as you push it in, like a screw. Once seated all the way, clean up the excess JB-Quick with q-tips coated with WD-40. I didnt even have to remove the air box to install these. I carefully removed the old wellnuts and went to work.

Took me less than 10 minutes to do all 4, and Ill never have to worry about those damn wellnuts again thanks to Noel!

If you live in the SoCal area, Ill be more than happy to help you do them. Just get the rivet nuts and some JB Quick and pm me for my number.
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Old 07-11-2010, 05:08 AM   #3
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for you guys and gals wondering where to get rivet nuts.....

the easiest place is McMaster-Carr..
part # 94020A371..... M4x0.7 alloy rivet nuts, 25 in a pack $10.40....shipping was $4.25.....

thats enough to do 6 air boxes.....spread them around, I do!

while you're ordering things from McMaster-Carr get some O-rings too

part#9452k197....the big fuel pump plate ones...... 25/$7.48
part#9262K141....the quick disconnect ones.........100/$5.72

the fuel pump plate ones are ~$18 EACH at the dealership, hey tell your Ducati friends too....this way they are $0.30 plus shipping

buying all this stuff ....$27.85 is the same as going to the dealership for 1 big O-ring and 4 wellnuts!!!!!!! and you didn't have to go anywhere...LOL


and you end up with a life time supply
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Old 07-11-2010, 06:57 AM   #4
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Thanks, Noel, for making me one of the lucky six! After todays test ride, I'll be doing the "Noel's Nuts" mod! I also have some more tasty carbon to install and a locking black shining gas cap from Tamburinin Corse....
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Old 07-11-2010, 07:44 AM   #5
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I use them (rivnuts) on my Race airbox, they are a common tool in my trade ( Sparky ), I have even used them on my swing-arm to more securely attach the hugger and chain guard, always crimped in.

I would not recommend the epoxy method(sorry Noel) unless you know what you're doing. On the F4's, different models have different length trumpets, and this can cause the long rivnuts to knock against the trumpets, eventually dislodging them. Although they will not fall into the motor, you will probably loose that little cover in the wind.
So if you insist on doing the epoxy thing, make sure you shorten the rivnut enough to avoid this from happening.

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Old 07-12-2010, 11:53 PM   #6
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Wish i knew what you what you guys were talking about half the time. guess the only way for me to know is to start ripping into it and find out these little things myself.
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Old 07-17-2010, 02:16 PM   #7
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where can i get these in the uk?
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Old 07-17-2010, 02:50 PM   #8
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Quote:
Originally Posted by Baronvonbombburst View Post
where can i get these in the uk?
go to McMaster-Carr online, buy the parts, have them sent to me,
i'll send them to you, you'll owe me ~$4 postage

too easy and you get them for less than i do!.....no 10% sales tax

takes ~3-5 days

i go to the post office ~3 times a week and its only 20 meters from my Bank lol

i have a stack of mailers and customs forms at my desk

i don't mind helping you people out, i do the same thing on ApriliaForum.com

its payback!

Noel-theknurl
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Old 07-17-2010, 03:36 PM   #9
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Do the rivet nut`s have an M3 thread? I`ve found some rivet nuts here in the uk are these the ones you use?

http://cgi.ebay.co.uk/STEEL-RIVET-NU...item53e1fda41a
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Old 07-17-2010, 04:01 PM   #10
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Wink

no, the injector cover screws are M4x0.7....

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