Warren's 350 MAC mid-drive (finally) recumbent

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Warren
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Re: Warren's 350 MAC mid-drive (finally) recumbent

Post by Warren » Aug 10, 2017 9:28 am

Having a wife who not only could, but apparently had an interest in lacing a bike wheel is very impressive. Lucky man!

rowbiker
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Re: Warren's 350 MAC mid-drive (finally) recumbent

Post by rowbiker » Aug 11, 2017 8:29 am

Warren wrote:Having a wife who not only could, but apparently had an interest in lacing a bike wheel is very impressive. Lucky man!
Agreed! :)

Warren
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Re: Warren's 350 MAC mid-drive (finally) recumbent

Post by Warren » Sep 02, 2017 1:14 pm

Thursday, I rode over Southwest Mountain again, to the market on route 20, for a milkshake.
SW Mountain.jpg
SW Mountain.jpg (116.71 KiB) Viewed 445 times
top of SW Mtn.jpg
top of SW Mtn.jpg (104.23 KiB) Viewed 445 times
I am always frustrated that pictures don't really give you a sense of distance, or grade. You can see at least 200 yards down a 15-20 percent grade, and it looks almost flat.

Mid 80s, windy.

47.58 mi, 2:28.43, 19.1 av, 37.8 max, 758.25 Wh, 15.9 Wh/mi, 28,934 miles, so far

Warren
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Re: Warren's 350 MAC mid-drive (finally) recumbent

Post by Warren » Sep 17, 2017 11:42 am

For five and a half years I pulled 24 Ah/80% out of the pack on almost every ride. By the end of May, in 2016, I was still pulling 24 Ah out of the pack, but the voltage was sagging. So I put the extra Leaf module I had from the eight module pack I bought for my cargo bike back in August of 2015, in series with the Ping pack. That brought the performance and range back to better than new for a year. On June 26th I got a low cell cutoff at 22 Ah. This keeps getting worse and it is now down to 20 Ah, and 940 Wh before cutting out. I am hoping it hangs on until the new 21700 packs start showing up.

8551 Ah, and 29,022 miles so far

Warren
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Re: Warren's 350 MAC mid-drive (finally) recumbent

Post by Warren » Jan 21, 2018 5:26 pm

Today was my first ride in a month! We were stuck under the polar vortex, but it seems to have moved on now. Saw three runners, and a ripped young gal on a MTB. Probably all UVA students. Also saw a Tesla Model X, of course. Getting within ten miles of Charlottesville, it is almost guaranteed. Did the Southwest Mountain ride again. Just like a bit further up the page. Except when I got to the little diner, they are no longer open on Sunday. That was OK. It hit 69F, and it felt so good to be on the bike again. I love our new Chevy Bolt, but it is a car. Which means it is totally boring, unless you drive like a complete A hole, on public roads.

rowbiker
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Re: Warren's 350 MAC mid-drive (finally) recumbent

Post by rowbiker » Jan 22, 2018 8:34 am

I feel your frustration. Until the day before yesterday (Saturday), I hadn't gotten a decent ride in since early December. The same Polar Vortex plaguing you in VA was, of course, hitting us up here in MN. It was the road conditions that were mostly the culprit though, not the temps. Even with 4 rows of studs on back and front tires, it just wasn't worth it. Saturday got above freezing, so we finally could see some road surfaces. The studs will handle the slick ice of 'refreeze', so we got a nice ride in (my 'winter bike' is a Bacchetta G20), with only human power.

What's the prognosis on your battery pack, and how close to 21700 availability are we really?

Warren
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Re: Warren's 350 MAC mid-drive (finally) recumbent

Post by Warren » Jan 22, 2018 6:26 pm

The pack is hanging in there, still OK pulling out 20 amp hours. I have no inside track on the the new cells. Paul, at EM3ev might know. Rode the RANS cargo bike today...63 miles. Bikes are the best!

Timelord
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Re: Warren's 350 MAC mid-drive (finally) recumbent

Post by Timelord » Jan 26, 2018 12:47 am

rowbiker wrote:
Jan 22, 2018 8:34 am
and how close to 21700 availability are we really?
That's a great question. There's an article from mid-2017 on electricbike.com calling them the up and coming thing, written by none other than spinningmagnets. Asked if we might finally see some aftermarket packs a year later. Not only silence, the comment got deleted. I get the impression the answer is not close at all. At this rate, something else might be the "hot" item before these have good availability.

rowbiker
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Re: Warren's 350 MAC mid-drive (finally) recumbent

Post by rowbiker » Jan 28, 2018 12:25 pm

Thanks for the info. I assume that if Tesla et al. switch from the 18650's to the 21700 format, things could change in a hurry. I'm fairly heavily invested in the 18650 format, but like most of us, have been habituated to spending way more money on batteries than we should have to. I'll very likely jump on the next bandwagon that comes along, whatever it is.

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