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Home made fiber gears - anyone ever tried?
Posted: Fri May 25, 2018 1:46 pm
by burke
The hunt continues for a replacement gear, but a bit of searching here suggests that delrin might be a material to try.
This site sells rods that are exactly the diameter I need and a one foot rod would leave room for many, many errors
https://www.aircraftspruce.ca/catalog/m ... rinrod.php
Anyone ever done this?
Re: Home made fiber gears - anyone ever tried?
Posted: Fri May 25, 2018 11:44 pm
by Lucius1958
Do you have gear cutting machinery?
Bill
Re: Home made fiber gears - anyone ever tried?
Posted: Sat May 26, 2018 9:43 am
by burke
I do not, but I figure if a guy can reproduce the Antikythera mechanism with just a file, I have a shot with one gear made out of plastic.
Re: Home made fiber gears - anyone ever tried?
Posted: Sat May 26, 2018 11:15 pm
by Lucius1958
burke wrote:I do not, but I figure if a guy can reproduce the Antikythera mechanism with just a file, I have a shot with one gear made out of plastic.
Wow: I hadn't heard about that feat. Is there a link?
Bill
Re: Home made fiber gears - anyone ever tried?
Posted: Sun May 27, 2018 6:59 am
by Phono-Phan
I used a black Delrin sheet to have gears made. McMaster-Carr is a good source. A custom gear shop, Edgerton Gear, used the material to make the gears. The precision of cutting the teeth is vital. Using a file may not get the necessary results.
Re: Home made fiber gears - anyone ever tried?
Posted: Sun May 27, 2018 9:50 am
by burke
Lucius1958 wrote:burke wrote:I do not, but I figure if a guy can reproduce the Antikythera mechanism with just a file, I have a shot with one gear made out of plastic.
Wow: I hadn't heard about that feat. Is there a link?
Bill
Something I saw on PBS I think or maybe Discovery, but sometime ago and I'm afraid I don't recall the specifics.
Re: Home made fiber gears - anyone ever tried?
Posted: Sun May 27, 2018 9:56 am
by burke
Phono-Phan wrote:I used a black Delrin sheet to have gears made. McMaster-Carr is a good source. A custom gear shop, Edgerton Gear, used the material to make the gears. The precision of cutting the teeth is vital. Using a file may not get the necessary results.
BTW - this is only a plan C in case I absolutely can't find either the spindle or a reasonably priced N0. 175 motor with a decent gear. I would also look for Canadian sources for both the material and perhaps as you suggest a fabricator. Shipping often far exceeds any sensible amount when getting stuff made south of the border.
Re: Home made fiber gears - anyone ever tried?
Posted: Sun May 27, 2018 10:41 am
by Curt A
Re: Home made fiber gears - anyone ever tried?
Posted: Mon May 28, 2018 4:44 pm
by JerryVan
burke wrote:The hunt continues for a replacement gear, but a bit of searching here suggests that delrin might be a material to try.
This site sells rods that are exactly the diameter I need and a one foot rod would leave room for many, many errors
https://www.aircraftspruce.ca/catalog/m ... rinrod.php
Anyone ever done this?
I guess I've come to the conversation late. What is the gear you're needing? Can you show a photo of it?
Re: Home made fiber gears - anyone ever tried?
Posted: Mon May 28, 2018 6:17 pm
by burke
JerryVan wrote:burke wrote:The hunt continues for a replacement gear, but a bit of searching here suggests that delrin might be a material to try.
This site sells rods that are exactly the diameter I need and a one foot rod would leave room for many, many errors
https://www.aircraftspruce.ca/catalog/m ... rinrod.php
Anyone ever done this?
I guess I've come to the conversation late. What is the gear you're needing? Can you show a photo of it?
Here is the one I'm looking for:
http://forum.talkingmachine.info/viewto ... =9&t=35676
...and here [first and only answer to OP's question] is the little Paillard its out of:
http://forum.talkingmachine.info/viewto ... =2&t=33220
As mentioned there are still folks looking and this is a last resort, hail mary pass, if the last paillard fiber on earth was sold last year ... option