Home > VansAirForceForums

-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

Go Back   VAF Forums > Model Specific > RV-12/RV-12iS
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Thread Tools Search this Thread Display Modes
Old 10-21-2020, 06:19 PM
philrisl philrisl is offline
Join Date: Apr 2014
Location: Deltona, FL
Posts: 36

Do a search for removing a broken tap. There are tools made for the job that engage the flutes of the tap. You can find them on Ebay.
Reply With Quote
Old 10-21-2020, 07:18 PM
Piper J3's Avatar
Piper J3 Piper J3 is offline
Join Date: Nov 2014
Location: Hinckley, Ohio
Posts: 2,233

Just spitballing here... maybe destroy the broken tap by taping it through the drilled hole with a small punch and then follow up by enlarging to #10-32 screw size.
Jim Stricker
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 633

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
Reply With Quote
Old 10-22-2020, 10:12 AM
rv3flier's Avatar
rv3flier rv3flier is offline
Join Date: Apr 2008
Location: La Center WA
Posts: 118

Strangely enough, this is the first tap I've ever broken -- thanks for the suggestions. I'm going to try a small needle nose pliar first and, if that doesn't work, 40 mile round trip to get a tap extractor --- then if all else fails the punch and enlarge to a #10 option.
Reply With Quote
Old 10-22-2020, 04:44 PM
Jamesey Jamesey is offline
Join Date: Feb 2008
Location: Hartlepool, England
Posts: 193
Default Centre punch

Did exactly the same. A well hit (lucky?) hit smashed the remaining bit (it was below the surface) and it popped out. Re-tapped to the original size.
Reply With Quote
Old 10-23-2020, 05:22 PM
rv3flier's Avatar
rv3flier rv3flier is offline
Join Date: Apr 2008
Location: La Center WA
Posts: 118

So far, I haven't been lucky. When I went to buy another 8-32 tap, I discovered that the correct pilot hole drill is a #29 and not a #30 called out in the plans. I re-drilled the remaining hole with the #29 and the tap cut the threads easily. However, I still haven't managed to get the broken tap out. I've tried a Dremel with a tapered grind stone to create a dimple for the drill bit to center on, 3 different drill bits while barely making a dent in the tap. It also won't punch out. So, I'm going to see if a dentist might have an old diamond tipped bit I can try.
Reply With Quote
Old 10-24-2020, 10:10 PM
RFSchaller RFSchaller is offline
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,921

This is a Hail Mary, but can you get the tip of a punch between the tap flutes and try to hit the punch to get the tap to rotate CCW and back out?
Reply With Quote
Old 11-24-2020, 12:25 AM
NinerBikes NinerBikes is offline
Join Date: Dec 2018
Location: Granada Hills
Posts: 1,047

Originally Posted by Jeff Vaughan View Post
I always dread putting the safety wire back on the Gascolator. Such a tight space.
Service the Gascolator during your Condition inspection when you have removed the old gear leg. Easy peasy
Swap out the screws for like socket head screws, and make sure to add Nordlock #10 washers under the socket heads... and the need for safety wire will be resolved.
RV-12, #212 N72DJ, bought flying. A Blessing in disguise. Thank you Double D!
Reply With Quote
Old 11-24-2020, 09:34 PM
RFSchaller RFSchaller is offline
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,921

I agree. One of the best suggestions I got from the blog was using socket head screws and Nordlock washers.
Reply With Quote
Old 02-12-2021, 12:39 PM
Mich48041 Mich48041 is offline
Join Date: Apr 2008
Location: Riley TWP MI
Posts: 3,146

The aft most holes in the nose gear leg were not aligned with holes in the bottom
of the fuselage. I had to elongate the holes in order to get the screws in.
The alignment problem might be due to the heat treating process after the holes were punched or drilled.
The new gear leg kit comes with another cushion clamp for the coolant hose.
Use two cushion clamps instead of drilling a hole in the gear leg for one clamp.
Joe Gores
RV-12 Flying
Reply With Quote
Old 02-12-2021, 03:53 PM
bobnoffs bobnoffs is offline
Join Date: Jul 2012
Location: n. wi
Posts: 809

boy, you are right on with that one, joe.
Bob Noffs
n. wi.
dakota hawk/jab 3300 built and flying. sold 6/18.getting serious about the 12. in the hangar now as of 10/15/19
RV-12 kit as of 9/13
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -6. The time now is 06:15 AM.

The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.