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  #11  
Old 11-15-2017, 05:29 PM
bkervaski's Avatar
bkervaski bkervaski is online now
 
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@M McGraw thanks!

Wow! These things new are expensive. The cheapest I found was ATS brand at $250 and the Sioux for $450!
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#140376 RV-14A QB IO-390 Thunderbolt
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  #12  
Old 11-15-2017, 10:28 PM
Jake14 Jake14 is offline
 
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Location: Seattle
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here's one for $8

https://www.amazon.com/gp/product/B0...pf_rd_i=552806

also, use the stubby drill bits; easier to get into tight places and help prevent breakage. You can even cut off most of the shank for really tight places....

https://www.amazon.com/Milescraft-23...drill+bits+hex

Last edited by Jake14 : 11-15-2017 at 10:31 PM.
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  #13  
Old 11-16-2017, 07:41 AM
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jeffw@sc47 jeffw@sc47 is offline
 
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Location: Simpsonville, SC (SC47)
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Default Cutting bit shank

The shanks are pretty hard, making them hard to shorten - you have to sacrifice a long drill bit because the short ones are hard to hold while you shorten them.

Then you have to re-point them, and being very short they are difficult to hold on to. And, you need to be good at getting a cutting point back on them.

I tried this and because I am not good at re-pointing drill bits using a belt sander I was not very successful.

I ended up resorting to pulling the flap extender assembly out to drill that hole, it took some time, you don't have to buy the right angle drill (I do have one and tried to drill it that way but it was hard to get the hole right where I wanted it), and you can drill the hole right where you want to.
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Jeff Warren
Simpsonville, SC (SC47)
1946 Bellanca Cruisair 14-13-2 (71 YRS OLD 8/15/17)
RV14A (N14ZT), Ser#140195
Start 10/11/14
IO-390 Lyc Tbolt / CS Hartzell
Dues paid 12/1/17 (USArmy 2/67-2/70)
www.mykitlog.com/jeffw@sc47

Last edited by jeffw@sc47 : 11-16-2017 at 02:13 PM.
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  #14  
Old 11-26-2017, 12:34 PM
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bkervaski bkervaski is online now
 
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I just ended up removing the part and drilling normally. It took all of maybe 45 minutes. I tried way to hard to avoid it, it was trivial, I just hate going backwards.
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