Mark VII a start and a long ways to go..
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Re: Mark VII a start and a long ways to go..
Thank you Mike, I was hoping it would be something easier.
I may be old but I’m slow
https://www.schmuckatellico.com/
https://scshiftknob.com
https://www.schmuckatellico.com/
https://scshiftknob.com
- JPG
- Platinum Member
- Posts: 34643
- Joined: Wed Dec 10, 2008 7:42 pm
- Location: Lexington, Ky (TAMECAT territory)
Re: Mark VII a start and a long ways to go..
With no load it should start at max speed. Not recommended to do so often.
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╟JPG ╢
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
╟JPG ╢
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
Re: Mark VII a start and a long ways to go..
I think I might have the wrong belt.... 29.5, that's the way I read the posts but will review
I may be old but I’m slow
https://www.schmuckatellico.com/
https://scshiftknob.com
https://www.schmuckatellico.com/
https://scshiftknob.com
Re: Mark VII a start and a long ways to go..
I cant find my notes but I'm almost positive my MKVII has a 29.5" belt.
still the same belt that came with it when I bought it in 2017. Haven't had it apart in a few years.
BTW. your MKVII looks great.
still the same belt that came with it when I bought it in 2017. Haven't had it apart in a few years.
BTW. your MKVII looks great.
SS Mark VII(sn 405025), SSband saw, SS 4" jointer, Older SS Mark V w/DC treadmill motor,
Smithy SuperShop 720, Powerkraft RAS,Craftsman RAS, Ridgid TS2412 Table Saw,
Delta 12" planer
Smithy SuperShop 720, Powerkraft RAS,Craftsman RAS, Ridgid TS2412 Table Saw,
Delta 12" planer
Re: Mark VII a start and a long ways to go..
I believe the concensus is 29.5". I have two original belts and both measure out closer to 30". Perhaps they are stretched?
Mike -
BTW, the width of the belt appears to play a significant role in the final spindle speed. I went down this rabbit hole unsuccessfully once before.
Mike -
BTW, the width of the belt appears to play a significant role in the final spindle speed. I went down this rabbit hole unsuccessfully once before.
ShopSmith Mark VII (406982), with Band Saw, Jig Saw, Belt Sander, and Jointer
ShopSmith Mark VII (400457), (working backup or parts machine)
12" Craftsman Band Saw (113.243311)
12" Craftsman Powered Hacksaw (108.1501)
12" Atlas Commercial (3990) 12" Back Geared, Undermount, Screw Cutting Lathe with Quick Change Gear Box, Taper, Milling and Grinding Attachments
Atlas MFC Horizontal Milling Machine with Vertical Milling Attachment
Atlas 7B Metal Shaper
ShopSmith Mark VII (400457), (working backup or parts machine)
12" Craftsman Band Saw (113.243311)
12" Craftsman Powered Hacksaw (108.1501)
12" Atlas Commercial (3990) 12" Back Geared, Undermount, Screw Cutting Lathe with Quick Change Gear Box, Taper, Milling and Grinding Attachments
Atlas MFC Horizontal Milling Machine with Vertical Milling Attachment
Atlas 7B Metal Shaper
Re: Mark VII a start and a long ways to go..
Thanks for the comments.
Not sure, I used this one from the end of the dissertation on Mark Vii belts and it seems much heavier and I have to open up the the Control Sheave all the way to put it on and can't close it down as it gets stuck between both halves.... https://www.amazon.com/dp/B00EOVLUOQ/re ... ZBb92VHR0J
The original, I still have, was much less robust and I'm thinking maybe a 30.5 might do better. one step forward and a couple back.:-)
Not sure, I used this one from the end of the dissertation on Mark Vii belts and it seems much heavier and I have to open up the the Control Sheave all the way to put it on and can't close it down as it gets stuck between both halves.... https://www.amazon.com/dp/B00EOVLUOQ/re ... ZBb92VHR0J
The original, I still have, was much less robust and I'm thinking maybe a 30.5 might do better. one step forward and a couple back.:-)
I may be old but I’m slow
https://www.schmuckatellico.com/
https://scshiftknob.com
https://www.schmuckatellico.com/
https://scshiftknob.com
Re: Mark VII a start and a long ways to go..
Robustness does not have anything to do with the proper belt length and width. The length affects tension and the width affects the speeds obtained with a Reeves drive.
John & Mary Burger
Eagle's Lair Woodshop
Hooper, UT
Eagle's Lair Woodshop
Hooper, UT
- JPG
- Platinum Member
- Posts: 34643
- Joined: Wed Dec 10, 2008 7:42 pm
- Location: Lexington, Ky (TAMECAT territory)
Re: Mark VII a start and a long ways to go..
Yes you should have to open up the motor pulley fully to get the belt on with the control sheave set to high. That allows one to push the belt into the sheaves and slip it on fully. Then the belt should ride close to the outer periphery of the motor pulley.Mike wrote: ↑Tue Jun 27, 2023 7:10 pm Thanks for the comments.
Not sure, I used this one from the end of the dissertation on Mark Vii belts and it seems much heavier and I have to open up the the Control Sheave all the way to put it on and can't close it down as it gets stuck between both halves.... https://www.amazon.com/dp/B00EOVLUOQ/re ... ZBb92VHR0J
The original, I still have, was much less robust and I'm thinking maybe a 30.5 might do better. one step forward and a couple back.:-)
From your link I am not sure what that belt measurements are.
4L295 should be a 1/2 x 29.5 inch belt.
P.S. ideally(original design) the belt should be about 9/16" wide.
╔═══╗
╟JPG ╢
╚═══╝
Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
╟JPG ╢
╚═══╝
Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
Re: Mark VII a start and a long ways to go..
If I was going to get a new belt I would try a metric one. 13MM = .512". I believe the old SS belts were slightly wider than 1/2" (.500") I believe that slightly wider belt is important to get the slow speed as close to 700RPM as possible.
SS Mark VII(sn 405025), SSband saw, SS 4" jointer, Older SS Mark V w/DC treadmill motor,
Smithy SuperShop 720, Powerkraft RAS,Craftsman RAS, Ridgid TS2412 Table Saw,
Delta 12" planer
Smithy SuperShop 720, Powerkraft RAS,Craftsman RAS, Ridgid TS2412 Table Saw,
Delta 12" planer
Re: Mark VII a start and a long ways to go..
I think I have it ass backwards- I opened up the control sheave by putting it on high, put belt on it while wide open, and then worked the belt around the motor pulley. I need to do some rethinking.JPG wrote: ↑Tue Jun 27, 2023 8:27 pmYes you should have to open up the motor pulley fully to get the belt on with the control sheave set to high. That allows one to push the belt into the sheaves and slip it on fully. Then the belt should ride close to the outer periphery of the motor pulley.Mike wrote: ↑Tue Jun 27, 2023 7:10 pm Thanks for the comments.
Not sure, I used this one from the end of the dissertation on Mark Vii belts and it seems much heavier and I have to open up the the Control Sheave all the way to put it on and can't close it down as it gets stuck between both halves.... https://www.amazon.com/dp/B00EOVLUOQ/re ... ZBb92VHR0J
The original, I still have, was much less robust and I'm thinking maybe a 30.5 might do better. one step forward and a couple back.:-)
From your link I am not sure what that belt measurements are.
4L295 should be a 1/2 x 29.5 inch belt.
P.S. ideally(original design) the belt should be about 9/16" wide.
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I may be old but I’m slow
https://www.schmuckatellico.com/
https://scshiftknob.com
https://www.schmuckatellico.com/
https://scshiftknob.com