sophia13
spending too much on rocks
RIP Jason Strickland, AKA sophia13
Member since March 2018
Posts: 327
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Post by sophia13 on Feb 9, 2019 18:47:40 GMT -5
Got my new Feed screw for my Hp 18ish saw. The 2nd one HP sent is about 3/4" longer than original but better than the 1st that was a couple inches short. New one is threaded differently (smooth in more spots vs more threads) than old but I guess that'll be ok. Problem is the gear won't fit on the end of the new one. The screw end is bigger than the gear hole opening. What should I do?.......I'm no Saw Master. Wish my last name was Funk but it's not. Suggestions, buy new gear, drill old one out?, get a new hobby? Catmandewe, anyone? Thanks all.
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Post by grumpybill on Feb 9, 2019 19:25:43 GMT -5
Might be time to cut your losses....
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fishnpinball
Cave Dweller
So much to learn, so little time
Member since March 2017
Posts: 1,491
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Post by fishnpinball on Feb 9, 2019 20:26:18 GMT -5
a new pulley should be fairly cheap. I am assuming that is what you are calling a gear.
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sophia13
spending too much on rocks
RIP Jason Strickland, AKA sophia13
Member since March 2018
Posts: 327
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Post by sophia13 on Feb 10, 2019 20:12:02 GMT -5
a new pulley should be fairly cheap. I am assuming that is what you are calling a gear. No sir, the ring gear.
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cigarboxrock
starting to shine!
Member since December 2017
Posts: 25
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Post by cigarboxrock on Feb 11, 2019 8:19:03 GMT -5
Take gear and feed screw to a local machine shop. Should be fairly inexpensive lathe job. Ask machines to provide small flatsy surface on end for maximum secure entry to gear. CBR
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quartz
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breakin' rocks in the hot sun
Member since February 2010
Posts: 3,341
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Post by quartz on Feb 12, 2019 0:39:50 GMT -5
Take gear and feed screw to a local machine shop. Should be fairly inexpensive lathe job. Ask machines to provide small flatsy surface on end for maximum secure entry to gear. CBR I am a retired machinist, entire working years, and have never seen this terminology: "provide a small flatsy surface on end for maximum secure entry into gear". What does this mean?
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Post by parfive on Feb 12, 2019 1:27:16 GMT -5
A receptive mating surface for a good screwing by allen, perchance?
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minerken
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Member since August 2013
Posts: 466
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Post by minerken on Feb 12, 2019 12:23:46 GMT -5
Take gear and feed screw to a local machine shop. Should be fairly inexpensive lathe job. Ask machines to provide small flatsy surface on end for maximum secure entry to gear. CBR I am a retired machinist, entire working years, and have never seen this terminology: "provide a small flatsy surface on end for maximum secure entry into gear". What does this mean? Yup kind of got a chuckle out of that too. It may be that the shaft is meant to be a press fit if it's only like a thousandth or so oversize. If more I would question if it was the proper size to begin with check the diameter at the threads and the pitch ( the number of teeth per inch ) if that matches it should be okay. If it turns out to be a press fit you should be able to do it yourself by carefully lining it up and tapping/ pounding it on or use heat to help and let it shrink fit if necessary. quartz may be able to suggest something better I'm just a hobbyist. As far as cheap most machinists here start at $80/hr with a min of $40. Pic's would also be a help show the original and the new. "New one is threaded differently (smooth in more spots vs more threads) than old but I guess that'll be ok" Not really clear what you mean? pic may explain it better. Sometimes what seems like it should be a straight forward project isn't but that doesn't mean it's hard either.
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,341
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Post by quartz on Feb 12, 2019 15:59:45 GMT -5
I think parfive might be on the right track, but a flat on the shaft for helping a setscrew in the gear hold the shaft in place would be for retention of the shaft, not for "secure entry". sophia13, my suggestion, if you don't have one, is to take the shaft and gear to a local auto parts or machine shop and ask them to get a measurement of how much bigger in diameter the shaft is vs. the bore in the gear. Either of these businesses will have a caliper capable of measuring this. If is a difference of ~.001" [one thousandth of an inch], that would be a press [done on a press designed to push parts together w/o damaging them] or sweat fit. A sweat fit is the heating of the gear to expand the bore size [in the 200-300 degree range], and optionally freezing the shaft to shrink the diameter a bit, so the gear will slide onto the shaft, then be pretty well locked on as temperatures stabilize. If the difference is greater than that, either the gear needs to be bored for a fit of the shaft or the shaft turned to fit into the gear. Being the gear is an original part, and the shaft a replacement, turning the shaft would be my fix. Also try getting in contact with Highland Park once you have the difference in dimensions established, see if they will help you out with this fix.
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cigarboxrock
starting to shine!
Member since December 2017
Posts: 25
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Post by cigarboxrock on Mar 2, 2019 14:34:05 GMT -5
Sorry - Flatsy is a slang term our German Machinist uses.
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sophia13
spending too much on rocks
RIP Jason Strickland, AKA sophia13
Member since March 2018
Posts: 327
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Post by sophia13 on Mar 7, 2019 17:37:04 GMT -5
Sending my stuff to Oregon to let the Pro's handle it. Nice guys on the phone
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Post by catmandewe on Mar 7, 2019 18:27:41 GMT -5
Check and make sure that the threads are correct or your feed dog wont work right before you send the parts off to get modified.
Tony
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sophia13
spending too much on rocks
RIP Jason Strickland, AKA sophia13
Member since March 2018
Posts: 327
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Post by sophia13 on Mar 7, 2019 19:02:28 GMT -5
Sending both dogs and screw to them.
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stillrockinpdx
starting to shine!
Hey!! I got a Star! - Find me on Instagram under stillrockinpdx - I collect other things too.
Member since April 2017
Posts: 45
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Post by stillrockinpdx on Oct 3, 2019 17:46:29 GMT -5
I went to local hardware store and bought thread stock with matching threads to the one that had worn down and I removed. Perhaps a finer thread would have slowed the feed tray down some but I’m not sure of the method of fastening the tray to the thread stock. I’m gonna look into that method now I’m thinking on it.
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