Weaver Cub Manual Sewing Machine

[Kcstott]

On 2/2/2020 at 7:55 PM, Wizcrafts said:

Before anybody tries motorizing a Cub, contact Weaver Leather and talk to their sewing machine gurus. The bearings, crank shafts and other moving parts may or may not be able to withstand speeds above what you can do by hand cranking. The manual oiling system may not be designed to provide proper lubrication at more than a couple stitches per second.  If anybody gets official word on how fast one can safely run this machine, please post it here in a reply, quoting Weaver.

Everybody wants a motor but no one stops to think about rpm and lubrication. 
I look at instances like this as duty cycle. How long was the original design intended to run non stop? Not very long being hand cranked.

[Constabulary]

Amazing simple Design! Have you downloaded the manual ? Really amazing simple!

I doubt the oiling / lubrication would be an issue when motorized. I guess the CUB has a plain bearing. Singer 45K´s also have a plain bearing and no ball bearing and it is manually oiled. 45K´s can run at ~900 SPM with a very heavy hand wheel mounted. Even patchers can run at 500 SPM. But I doubt people would run a CUB at that speed even when motorized. Remember how slow you sew with your machines when sewing leather. How many SPM are realistic 100 maybe 150 SPM? The machine has one eccentric tappets and a gear rack / pinion combo that drive the machine I think it would withstand a speed of 100 - 150 SPM without problems

If I would own a CUB I would motorize it and I would not worry about the lubrication when run at relatively low speed.

But I would check with Weaver and see what they say.

 

Edited February 7, 2020 by Constabulary

[jhrleather]

My use for a cub would only require it being  used at  low speed so at this point I don't see a problem for me.  Motorizing it would give me more control of the project being sewed having both hands available.   So when I soon buy one I already have a servo motor picked out for it.  I don't see lubricating it often as a problem.   I am currently in the process of motorizing my Chinese shoe patch machine to use as a sewing aid punching the holes to hand sew after.  I like to hand sew but don't like an awl and using only saddle stitching.  

[Wizcrafts]

17 minutes ago, jhrleather said:

Motorizing it would give me more control of the project being sewed having both hands available.   So when I soon buy one I already have a servo motor picked out for it.

Make certain that the motor you buy is reversible. The Cub rotates clockwise, opposite to industrial sewing machine standards.

[Ken Nelson]

If you want a motorized machine, why don't you save a little while and hunt for a good used motorized machine that is suited for your needs.  If you intend to hand crank a "hand crank" machine and it fits your need,  you are probably on the right track. I recently sold a really good Artisan Toro 3000 for not much more than what a new hand cranker costs and I made a little money on it.

[SalInRI]

Is anybody using the Cub?

There's a lot of Boss and Outlaw reviews, but I don't see much about the Cub ... pro or con.

[Wizcrafts]

1 hour ago, SalInRI said:

Is anybody using the Cub?

There's a lot of Boss and Outlaw reviews, but I don't see much about the Cub ... pro or con.

Check on the Weaver Leather Master Tools Cub web page. There are some positive reviews from actual buyers.

[Old Coach Saddlery]

Weaver bought the writes to Tony Luberto’s Windham Cub. It’s been around for several years.

[Benez1113]

I bought one . I’m still getting used to it . I having issues with it occasionally dropping a stitch . 
The fly wheel crank is huge . If you have short arms , this may not be for you. 

[jhrleather]

bb

Concerning the Weaver Cub.  No need for a grooved flywheel. Just screw a pulley to the existing  flywheel.  I just screwed a 10 inch pully with a 1 inch bore to the flywheel of a Chinese shoe patcher.  The 1 inch bore allows you to get to the bolt holding flywheel. I am running the thing with a servo motor with a 2 inch pulley.  Works nice and slow.  Since I sew exclusively  with number 346 thread which it can not sew consistently and as I  like the look of saddle stitching I saddle stitch my holsters.   I then decided to remove the needle and the bobbin and installed an  awl blade. I now use it as a motorized harness awl.  Works Fantastic.  No need for a speed reducer etc. it's all in the motor control.  It punches all the holes at the proper angle and I then saddle stitch the whole project.  

I would like to post photos of the machine with modifications  and shoulder holsters but don't know how. Can someone help.

 

Edited June 13, 2020 by jhrleather
correct erros