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indianajo
Well-Known Member
Welcome to the site.
DJ is not a widely publicized brand. Is this a hub motor?
Washers for hub motors can be made from fender washers by elongating the hole with a triangle file and a round file. don't waste any money on the toys that resemble files from harbor freight. Or other purveyors of ****ese toys. Get nicholson from the hardware store. If your hardware store has turned into a toy store, order from mcmaster.com . Also a source of fender washers if you don't have a fastenal nearby
A vise is useful for holding the washers while you modify them. Also a bench to screw the vise down to.
Spacers are just fat washers. They can be replaced by multiple washers. If you need the tang to fit in the slot for anti rotation, grind down the outside of a fender washer and leave the tang, which you can bend over.
If the nuts are 12 mm or 14 mm coarse or fine, you can get those at the auto supply or motorcycle parts shop.
If the nuts are 14 mm 1.75 thread, which mine were, I found those one time at a local motorcycle supply. However, the next time I needed some: (the old ones were 30 miles away) the motorcycle shop had been bought out by a national chain, who deleted all that unprofitable trash.
So I made the nuts out of 12 mm nuts by drilling out with a 1/2" drill and tapping with a 14 mm x 1.75 tap from victornet.com . I keep two nuts on my motor counter torqued to prevent loosening. As the threads are rather shallow, the counter torque can only be about 30 ftlb. Works though, my motor doesn't come loose.
DJ is not a widely publicized brand. Is this a hub motor?
Washers for hub motors can be made from fender washers by elongating the hole with a triangle file and a round file. don't waste any money on the toys that resemble files from harbor freight. Or other purveyors of ****ese toys. Get nicholson from the hardware store. If your hardware store has turned into a toy store, order from mcmaster.com . Also a source of fender washers if you don't have a fastenal nearby
A vise is useful for holding the washers while you modify them. Also a bench to screw the vise down to.
Spacers are just fat washers. They can be replaced by multiple washers. If you need the tang to fit in the slot for anti rotation, grind down the outside of a fender washer and leave the tang, which you can bend over.
If the nuts are 12 mm or 14 mm coarse or fine, you can get those at the auto supply or motorcycle parts shop.
If the nuts are 14 mm 1.75 thread, which mine were, I found those one time at a local motorcycle supply. However, the next time I needed some: (the old ones were 30 miles away) the motorcycle shop had been bought out by a national chain, who deleted all that unprofitable trash.
So I made the nuts out of 12 mm nuts by drilling out with a 1/2" drill and tapping with a 14 mm x 1.75 tap from victornet.com . I keep two nuts on my motor counter torqued to prevent loosening. As the threads are rather shallow, the counter torque can only be about 30 ftlb. Works though, my motor doesn't come loose.
indianajo
Well-Known Member
My closest ebike shop in the next state sells pedego only. This is not a pedego. A customer reported the owner knows nothing about bike maintenance.
There is a multiple brand shop south of Chicago, only 160 miles from here and 25 miles off the bus routes up there. I parked my car in 2008.
There is a multiple brand shop south of Chicago, only 160 miles from here and 25 miles off the bus routes up there. I parked my car in 2008.
harryS
Well-Known Member
Hi Terry, can't promise you that your DJ uses them. but every ebike motor I have seen (about twelve of them) uses M12 x1.25 thread. Some of the bigger motors use M14.
They also include the oblong washer mentioned by indianajo, plus the lawyer lip washers. The latter lgo into the slot on the frame and help counteract twist. The oblong washer also resists spin.
The M12-1.25 was not available at Ace hardware or Home Depot when I Iast looked.
This combo is priced at a jaw dropping price of $23 on ebay (where I also got the above image).
I have bought the nuts on amazon. They were $10 a few years ago, Now you gotta pay $14.
This is not the best torque arm, but it does work. You probably don't need it on a production ebike.
They also include the oblong washer mentioned by indianajo, plus the lawyer lip washers. The latter lgo into the slot on the frame and help counteract twist. The oblong washer also resists spin.
The M12-1.25 was not available at Ace hardware or Home Depot when I Iast looked.
This combo is priced at a jaw dropping price of $23 on ebay (where I also got the above image).
APAR EBIKES e bike Axle M12/ M14/ M16 lock nut / lock washer /spacer /torque arm | eBay
Torque arm : M14 torque arm fits M12. M14 motor axle. M16torque arm fits M16 motor axle. NEVER put M16 torque arm on M12 axle! Nuts sizes : M16 X 1.5. M12 X 1.25. C washer for adjust motor wheel disc brake --- Don't need take off your motor wheel.
www.ebay.com
I have bought the nuts on amazon. They were $10 a few years ago, Now you gotta pay $14.
Amazon.com: 4pcs M12 x 1.25mm Pitch Metric Fine Thread 304 Stainless Steel Hex Flange Nut : Industrial & Scientific
Buy 4pcs M12 x 1.25mm Pitch Metric Fine Thread 304 Stainless Steel Hex Flange Nut: Hex Nuts - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
This is not the best torque arm, but it does work. You probably don't need it on a production ebike.
Amazon.com : ebikeling Universal Torque Arm for Electric Bicycle e-Bike Bike Front or Rear Hub Motors and Mid Drive e-Bike : Home Improvement
Amazon.com : ebikeling Universal Torque Arm for Electric Bicycle e-Bike Bike Front or Rear Hub Motors and Mid Drive e-Bike : Home Improvement
www.amazon.com
harryS
Well-Known Member
30 years ago, people I knew with relatives in China would tell stories about how it was everyman's dream to get some money together and start a little shop, usually a bike shop. Buy the parts and assemble bikes.
There's more than one bike factory, but now they want to get some money together and sticker up generic ebikes.
There's more than one bike factory, but now they want to get some money together and sticker up generic ebikes.
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