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Old 11-28-2017, 09:57 PM
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LettersFromFlyoverCountry LettersFromFlyoverCountry is offline
 
Join Date: Jan 2005
Location: St. Paul, MN.
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Default I hate CherryMax rivets

I read and followed the Van's service bulletin on Cherry Max rivets, even ground down the side of a Stanley riveter to be sure it was straight when riveting the fuselage center section with those honking 4-8's. 12 each side. Van's sends you three extra.

It was still a **** shoot and there were far too many that I couldn't initially get the stem flush on the manufactured head side and snugged up on the shop head side.

Sure, I could drill them out and try again, which I did. But went through the supply to get 12 decent rivets.

Van's doesn't sell this size. Neither does Aircraft Spruce. Wick's charges $2 apiece because they'll sell you lead than 100. Finally went with Skygeek at $79 for 100.

It makes economic sense for me to just buy that expensive $139 Cherry Max riveter Van's says I Don't need.

It doesn't seem as though just any regular pop riveter you can buy is up to the task. So which specific model have you found will work every time on this size CherryMax?
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  #2  
Old 11-28-2017, 10:11 PM
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rongawer rongawer is offline
 
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Default

I have pneumatic puller from Isham (planetools.com). I normally run around 70psi, but for the CMís, I run it up to 90 psi and it works very well.
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  #3  
Old 11-28-2017, 11:23 PM
rgmwa rgmwa is offline
 
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I ended up buying the expensive Cherrymax. The other two hand riveters I had didn't work.
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Old 11-29-2017, 07:42 AM
AeroDog AeroDog is offline
 
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Location: New London, NC (near Charlotte), Boulder, CO
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Quote:
Originally Posted by rgmwa View Post
I ended up buying the expensive Cherrymax. The other two hand riveters I had didn't work.
Ditto. I've had zero problems with Cherry rivets. Never had to drill one out.

Jerre
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Old 11-29-2017, 10:25 AM
Ron B. Ron B. is offline
 
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Location: Yarmouth, Nova Scotia
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Make sure your hole in your puller is very snug to the stem. A loose tip will not pull well, ask me how I know? You might even have to use an under size tip and drill it out to the size you need.
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  #6  
Old 11-29-2017, 10:31 AM
rv9builder rv9builder is offline
 
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Location: Irvine, CA
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Quote:
Originally Posted by LettersFromFlyoverCountry View Post
I read and followed the Van's service bulletin on Cherry Max rivets,
Bob, Is this the service bulletin you're referring to?

https://www.vansaircraft.com/pdf/sb1...9-Addendum.pdf

Thanks,
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  #7  
Old 11-29-2017, 11:06 AM
RFSchaller RFSchaller is offline
 
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Location: Phoenix, AZ
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Iíve had mixed results with hardware store rivet pullers so I bought the cheapest manual Cherry Max puller I could at Aircraft Spruce. It works fine. On the other hand while helping a friend with his build I forgot to use it and the rivets pulled just fine with his HF pneumatic puller. Like I said Iíve had mixed results with pop rivet pullers.
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  #8  
Old 11-29-2017, 11:57 AM
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
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Quote:
Originally Posted by rv9builder View Post
Bob, Is this the service bulletin you're referring to?

https://www.vansaircraft.com/pdf/sb1...9-Addendum.pdf

Thanks,
FYI, the rivet info included in this SB was incorporated int Section 5 of the construction manual.
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  #9  
Old 11-29-2017, 01:16 PM
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Mark Albery Mark Albery is offline
 
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Location: Redwood City CA
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It's sometimes possible to get a straight pull on a Cherry rivet with the puller angled over slightly by using a wedge/shim. like the one that Cleaveland sell.

It certainly helped me in a few tight corners where nothing else worked
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  #10  
Old 11-29-2017, 01:40 PM
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mike newall mike newall is offline
 
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Location: Yorkshire, England
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I don't understand how someone can build a 12 without a pneumatic riveter....

As previously reported, keep the mandrel clearance snug, we modified the smallest one to fit the standard LP4-3 pull rivet, much better. That same ATS riveter pulls Cherry's without effort, either straight or using the adapteriser from Cleaveland. Makes a right bang though !
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