Very Lightweight Single Speed? Anything out there I'm missing?

P

PSm

Well-Known Member
Region
USA
Won't get too far on my soapbox, regarding the Ride1UP Roadster, which I absolutely love.

I'm addicted to the quiet of a carbon belt, and the simple elegance of a single speed, and a lightweight bike (~33lbs before adding extended battery and all accessories). Fitness and real exercise is a top priority, with the single speed and standing up climbing hills melting away pounds especially the gut.

Searched everywhere to try to find an even lighter single speed (preferably carbon belt) ebike for fitness, well under 30 lbs ... but nothing appears to be out there. Would be great to have one with a carbon frame, but nothing? (manufacturers, are you listening?!)

Anything out there I'm missing?
 
Neverlost99 said:
I keep asking Luna to add a bigger battery and motor to the Fixie.
Click to expand...
That was one of the reasons I didn't get a Luna. IGH is nice, but I was surprised by the real-life lower range that people mentioned.

It looks possible that the Luna Stealth and Ride1UP Roadster v2 might have the same battery? Based on the battery specs, and what looks like the LCD display also being the same, maybe the extended battery of the Roadster (which allows typical range of 40+ miles, and with my all out effort max single ride with mountains almost 100 miles) could be used with the Luna? Just a guess, and need some electrical expert to comment.
 
Its not the same battery between the two. But it is similar construction.

Luna and I am sure Ride1Up are using an in-tube framework they tuck a cluster of cells into. Luna publishes this pic of it:

space-tube-battery[1].jpg


So as you can see four cells fit into that sleeve. You stack as many sleeves as you can into the downtube, wire on a BMS, a charger input and a motor output and poof... internal frame battery.

Luna uses Panasonic GA cells. Ride1Up uses Samsung 35e. The GA cell has an advertised capacity of 3450mah whereas the 35e is advertised at 3500mah... so that explains why the two packs work out to the same size insofar as the ad copy goes.

I have a 59cm Vitus 979 frame from the early 1980's with a Mavic SSC group/wheels on it. The whole bike weighs just under 20 lbs. It has somewhere in the ballpark of 40,000 miles on the frame and wheels. I wish I still weighed in the ballpark of the 135 lbs I did when i was riding it hard back in the day cuz if I did, I would be riding that bike now with a motor on it.

A bike like that can handle a de-fanged BBS02. Not sure where the weight will be but if you want lightweight, thats how you get it. Very carefully get yourself a proper road bike and then very carefully put a kinder, gentler motor on it.
 
m@Robertson said:
Its not the same battery between the two. But it is similar construction.

Luna and I am sure Ride1Up are using an in-tube framework they tuck a cluster of cells into. Luna publishes this pic of it:

View attachment 128798

So as you can see four cells fit into that sleeve. You stack as many sleeves as you can into the downtube, wire on a BMS, a charger input and a motor output and poof... internal frame battery.

Luna uses Panasonic GA cells. Ride1Up uses Samsung 35e. The GA cell has an advertised capacity of 3450mah whereas the 35e is advertised at 3500mah... so that explains why the two packs work out to the same size insofar as the ad copy goes.

I have a 59cm Vitus 979 frame from the early 1980's with a Mavic SSC group/wheels on it. The whole bike weighs just under 20 lbs. It has somewhere in the ballpark of 40,000 miles on the frame and wheels. I wish I still weighed in the ballpark of the 135 lbs I did when i was riding it hard back in the day cuz if I did, I would be riding that bike now with a motor on it.

A bike like that can handle a de-fanged BBS02. Not sure where the weight will be but if you want lightweight, thats how you get it. Very carefully get yourself a proper road bike and then very carefully put a kinder, gentler motor on it.
Click to expand...

Thanks for the details and expertise. I was just looking at the 36v 7ah 250 wh rating of both batteries being the same, but like you say that's not the end of the story. The ride1up battery is here: https://ride1up.com/product/roadster-battery/ https://ride1up.com/wp-content/uploads/2020/11/Electric-Bike-Internal-Frame-Battery.jpg

For non ebike conversions that's an interesting idea, but assuming that would be quite the challenge (expertise, time and money). If I can't eventually find an OEM solution, maybe I just need to get additional external extender batteries, and just store in my rear rack saddle bag for century rides. Or get a super lightweight non ebike.
 
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How critical is the 33 lbs wish? The Aventon Soltera is single speed but might be approaching 40 lbs. Don’t know if it’s chain or belt drive but the price is pretty reasonable.
 
Dewey, Marci Jo -
Yeah, really looking for a <30 lb hybrid style flat bar ebike with a single speed belt drive. For me, the Ride1up Roadster has been the best bike I've ever had for fitness, simplicity and low maintenance (and I have/had multiple ebikes, and analog road & mtn bikes). I guess I'm really looking for the same bike, but with a carbon frame, and other weight reducing components. Thought about carbon rims, but worried about durability and cost.
 
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Dewey said:
Desiknio classic single speed is 29lb without fenders and lights which add 2lb. Here’s Court’s review from a few years ago https://electricbikereview.com/desiknio/single-speed-urban/

In the EU the Ampler Curt is similar but slightly heavier at 32lb, while the Coboc eCycle F1 and Brooklyn Fat models weigh 24lb and 29lb respectively, and here’s Court’s review of an older model https://electricbikereview.com/coboc/one-soho/
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Nice finds! That's more like it. If only they, especially the 24 lb Coboc F1, weren't only for Germany 😞
 
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