Boka heli coil construction

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mwhitnell
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Boka heli coil construction

Post by mwhitnell »

I bought this boat winch at harbor freight for about $22. I replaced the shaft with a 5/8"OD steel rod I scavenged off an old pressure washer. I bought the pillow block on ebay for about $3.00, also the little U grove bearing for 98c. I filled tubing with 55cc of salt...dont know why anyone would need a vibrator sander because the salt filled the tube quickly by gravity. I went ahead and filled 5 pieces cut to 10ft each....even tho I only planned on needing one. My wife operated the winch.
Helicoil jig
Helicoil jig
I bent one end around the U groove bearing and tie wrapped it to the shaft. The first row of 15 coils wrapped around the 5/8" shaft. I removed the pillow block and inserted the chrome brass plumbing 1-1/4" 20ga thickness tail piece over the row of coils. I did cut the brass tail piece lengthwise using a die grinder cut off wheel. I tighten it using a hose clamp somewhat. I continued wrapping the tubing for the second row. As the coil got longer I moved the hose clamp down a little. I removed the helicoil from the shaft, removed the brass tail piece spacer, cut off the ends and used a 1/4" John Guest push fitting attached to a garden hose to flush the salt. It took me less than one hour to wind all five coils, but about 45min each to remove the salt.
Helicoil
Helicoil
Last edited by mwhitnell on Wed Apr 21, 2021 7:05 pm, edited 2 times in total.
The Baker
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Re: Boka heli coil construction

Post by The Baker »

Wow.

Geoff
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Re: Boka heli coil construction

Post by Expat »

A well built jig is a thing of wonder.

Nice work!
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Saltbush Bill
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Re: Boka heli coil construction

Post by Saltbush Bill »

Great job :thumbup:
MementoMori
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Re: Boka heli coil construction

Post by MementoMori »

Great job 👏
"No great mind has ever existed without a touch of madness". Aristotle
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