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Drilling alignment/bearing driver tool

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Old 03-07-2020 | 12:38 AM
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Default Drilling alignment/bearing driver tool

I would like to pass on a tip about something I learned the hard way. When drilling the alignment tool for your bearing driver, don't use a very small drill bit for the pilot hole. You can start with a 1/8 bit at the punch mark, but only drill about an 1/8 deep. You can graduate with a few larger bits, but I would only go about a 1/4 deep. Use at least a 1/4 bit to make your pilot hole. At first I used a 3/16th and the bit strayed off center. apparently anything under a 1/4 has too much flex. The bore needs to be fairly precise or the pin won't go thru. I would recommend using a drill press with the piece locked in a vise. Use sharp bits and keep the work oiled. If you try to do it with a hand drill, chances are you wont be successful. If you don't have access to a drill press, you should probably have a machine shop do it for you. Sometimes it's hard to be a half ass mechanic and a machinist, but we try our best!

Last edited by BravoX1D; 03-07-2020 at 12:48 AM.
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Old 03-10-2020 | 08:52 PM
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will add ---- No drilling ever required. They make mandrels that fit right on the alignment bar for gimbel bearing installation that self align the bearing. Been using the slip on mandrels for a least 20 years.
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Old 03-12-2020 | 12:18 PM
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Originally Posted by BUP
will add ---- No drilling ever required. They make mandrels that fit right on the alignment bar for gimbel bearing installation that self align the bearing. Been using the slip on mandrels for a least 20 years.
Now you tell me. DOH!
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Old 03-12-2020 | 08:03 PM
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Originally Posted by BravoX1D
Now you tell me. DOH!
Sorry and I understand --- also I have a great comeback for your reply. IF YOU WERE A CUSTOMER OF MINE I WOULD HAVE GAVE YOU HAT INFO BEFOREHAND. haha sorry I just had to throw all that out there..

Don't worry I spend a lot time giving out good info - 31 years of doing this thing- I know a thing or 2 and have worked on a boat or two as well.
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