Be *VERY* careful if you do this to leave enough for the seat to be very secure. The last thing you want is for the seat to come off so you impale yourself on the seat post.
slinthicum
New member
The attached pictures may be helpful in providing a seat lowering solution. The first picture shows the current available distance between the top of the tube the seat post is inserted in and where it bottoms out. As noted on my e-bike that is a length of 11 inches. The next picture shows the seat post, from its bottom to where the threading begins near the top of the post and that plastic piece screws on. That distance is 10 inches. The third picture shows the location on the bike where the seat post is inserted.
My thought, as detailed below, would be to remove the top 1 inch on the insertion location, extend that slot down around that distance, providing the flexibility for the clamping mechanism to grasp the seat post. This relatively simple modification may provide a sufficient lowering of the seat so I do not have to stand on my tip-toes when stopped.
Thoughts,
Steve
My thought, as detailed below, would be to remove the top 1 inch on the insertion location, extend that slot down around that distance, providing the flexibility for the clamping mechanism to grasp the seat post. This relatively simple modification may provide a sufficient lowering of the seat so I do not have to stand on my tip-toes when stopped.
Thoughts,
Steve
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What is the metal the frame is made from?
If it is aluminum be careful not to heat it up when cutting the post or the slot.
I agree the best first step will be getting a non-suspension seat post and see if an inch or two will meet your needs.
If it is aluminum be careful not to heat it up when cutting the post or the slot.
I agree the best first step will be getting a non-suspension seat post and see if an inch or two will meet your needs.
BTW, I am also a retired gentleman so I am sensitive to fixed income issues.
Try the shorter post first. The thing with cutting the frame tube is you want to be certain that’s what you want to do. If you cut any off you can’t put it back.
You can cut it with simple hand tools. I would recommend avoiding any kind of power tools, including if not especially dremel tools.
Slow and steady is the ticket. You will want a metal cutting blade fine enough to have at least two teeth on the tubing wall at all times. This means the spacing between saw blade teeth should be less than the thickness of the tubing.
Use a layer of paper tape to reduce paint chipping during the cut. Mark your cut line on the tape.
After making the cut remove any burring with a fine round file or the tang handle of a file.
For cutting the slot I would use a file. Ideally a pillar file the same width as the slot. Ask at your hardware store.
Remember to seal the paint edges after the cut. A fine coat of primer appropriate for the metal and some model paint or fingernail polish will work fine.
Try the shorter post first. The thing with cutting the frame tube is you want to be certain that’s what you want to do. If you cut any off you can’t put it back.
You can cut it with simple hand tools. I would recommend avoiding any kind of power tools, including if not especially dremel tools.
Slow and steady is the ticket. You will want a metal cutting blade fine enough to have at least two teeth on the tubing wall at all times. This means the spacing between saw blade teeth should be less than the thickness of the tubing.
Use a layer of paper tape to reduce paint chipping during the cut. Mark your cut line on the tape.
After making the cut remove any burring with a fine round file or the tang handle of a file.
For cutting the slot I would use a file. Ideally a pillar file the same width as the slot. Ask at your hardware store.
Remember to seal the paint edges after the cut. A fine coat of primer appropriate for the metal and some model paint or fingernail polish will work fine.
slinthicum
New member
Based on the Amazon link below, the frame metal appears to be aluminum. I've confirmed that it is not a ferrous material utilizing a magnet. Your suggestion about the process of completing the work appears to make sense. My wish is that another forum participant is willing to give it a try (first confirming my measurements) and let me know how it goes. Any volunteers?
Links to Amazon may include affiliate code. If you click on an Amazon link and make a purchase, this forum may earn a small commission.
slinthicum
New member
BTW, I rode down to the beach yesterday for the first time on an E-Bike. I chose a route that had wide bike lanes and minimal traffic. That effort lengthened the distance to the beach by about three miles, resulting in a one-way distance of 7.2 miles. The bike handles the hilly trip well and it was a great experience (see attached picture). I look forward to similar experiences with this new toy.
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GroovyOne
New member
I have this problem with the Engwe L20 2.0 seatpost. My daughter is 5' 3'. I removed the shock absorber flip seatpost (sold on Amazon) and replaced it with a standard seat post. She can now touch the ground with the balls of her feet but lost the both the shock absorber and the flip option. Engwe quoted me $55 to send a flip seatpost without the shock absorber (can't find it anywhere else). My daughter isn't used to riding a bike. She loves the bike but complains about the seat and the bumps. Looking for best phone mount options that aren't $100?
Flip seat post - https://switched-on-cycles.myshopify.com/products/flip-seat-post
I just received the new seat post. Basically what they have done is taken out the suspension part of the post and put the thinker part at the top of the post where the post connects with the seat. So the seat is a lot shorter now but you lose the suspension. This is why you can't just cut off the post like people have suggested.
NOTE: The reason it took so long is because they didn't have any more in stock in CA and had to ship it from China to CA and then to me.
NOTE: The reason it took so long is because they didn't have any more in stock in CA and had to ship it from China to CA and then to me.
Does anybody know the L20 2.0's seat post diameter? Wife is short and was thinking of getting a Jetson Bolt seat with short post. It's 28.6mm so I'd like to know what size sleeve to fashion with it. I know this seat with post has no suspension or tilt for the battery. Thx
Seat Saddle for the Jetson Bolt Folding Electric Bicycle SKU: X98-3380 (IL/RT... | eBay
You can replace your worn or tattered seat for the Jetson® Bolt Folding Electric Bicycle with this new one. The padded black vinyl cruiser-style seat features a wide comfort shape, shallow anatomical relief, coil springs, and high-quality construction.
www.ebay.com
Links to eBay may include affiliate code. If you click on an eBay link and make a purchase, this forum may earn a small commission.
To answer my own question the Engwe L20 2.0 seatpost diameter is 27.2mm. I contacted Engwe support and they are sending me the 50cm rod like POPdevil. No US stock so it is being shipped from China. For now, my wife is using her old Trek seat with 26.2mm seatpost. She's only 5' tall, so just letting you know short riders can ride the Engwe L20 2.0 ebike. Thx
Can you send me link for ordering seat post? Thanks
