Search found 1309 matches

by Warren
May 02 2018 4:50pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar
Replies: 334
Views: 33550

Re: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar

I'm a big fan of clipless pedals on a recumbent. A couple of threaded holes, for pedals, is much easier than footboards too. It's funny. I had this discussion with folks on the C2 rowing forum years ago, and many were all, "No you'd be trapped upside down in the shell and drown. Then Shimano came ou...
by Warren
May 02 2018 9:42am
Forum: E-Bike Build Threads / Photos & Video
Topic: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar
Replies: 334
Views: 33550

Re: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar

Rowingbike Pivot Drive Concept.jpg It's going to look a tiny bit goofier than the sliding design, but has so many advantages for reliability by trading a pair of parallel sliding rails for a single pivoting structure. And it should be lighter too. I think it's CAD modeling time to make a proper 3D ...
by Warren
Apr 29 2018 9:00am
Forum: E-Bike Build Threads / Photos & Video
Topic: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar
Replies: 334
Views: 33550

Re: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar

Justin,

Thanks for clearing that up. Your understanding of both styles is correct.
by Warren
Apr 27 2018 9:43am
Forum: E-Bike Build Threads / Photos & Video
Topic: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar
Replies: 334
Views: 33550

Re: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar

fechter wrote:
Apr 27 2018 8:07am
You could make the foot pegs for the rowing mechanism movable to adjust the mechanical advantage.
Yes. If the foot pegs were half way up the pendulum Justin would get the 2:1 ratio he is looking for. But the shorter the pendulum for the feet, the less you approximate a linear path.
by Warren
Apr 27 2018 9:28am
Forum: E-Bike Build Threads / Photos & Video
Topic: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar
Replies: 334
Views: 33550

Re: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar

In this design, the legs are effectively pushing a pulley rather the rope directly, so they will see twice the force as the arms. And each 1" of travel pushing with the legs is equivalent to 2" of pull from the arms. I think you are missing something here. Pushing a pulley will pull twice as much r...
by Warren
Apr 25 2018 4:51pm
Forum: Battery Technology
Topic: Tesla Model 3 battery teardown!
Replies: 27
Views: 2031

Re: Tesla Model 3 battery teardown!

IMHO, the potting is for vibe and corrosion resistance, and the majority heat path is likely through the bottom of the cell. This shot shows what I think is a cooling plate or channel between the cells. http://www.motortrend.com/news/tesla-model-3-teardown-deconstructed-3/#tesla-model-3-teardown-9
by Warren
Apr 24 2018 3:54pm
Forum: E-Vehicles General Discussion
Topic: Model 3
Replies: 111
Views: 7557

Re: Model 3

You will love the Model 3. I attended an alt energy/green tech event at a nearby park Saturday. I lined up our Bolt with a plug-in Prius, and 4-5 Tesla S and X, as usual. The treat was when the Model 3 showed up. I got to sit in it, close the frunk, etc. IMO it is much sexier than the S or X. I find...
by Warren
Apr 23 2018 11:20am
Forum: E-Bike Build Threads / Photos & Video
Topic: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar
Replies: 334
Views: 33550

Re: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar

Most of that link is gone or busted. :-( https://web.archive.org/web/20040719064809fw_/http://forwardface.com:80/regatta98/zrower98_01.jpg https://web.archive.org/web/20040719065610fw_/http://forwardface.com:80/regatta98/zrower98_02.jpg https://web.archive.org/web/20040719070757fw_/http://forwardfac...
by Warren
Apr 23 2018 11:02am
Forum: E-Bike Build Threads / Photos & Video
Topic: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar
Replies: 334
Views: 33550

Re: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar

But when we used weight lifting gloves that only covered the palms and were held in place with a thin strap, it made a huge difference. Great idea. I'm going to start posting sketches of the rowing mechanism I have in mind next. But basically, the idea is that the legs will be pushing on the pulley...
by Warren
Apr 18 2018 9:56pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar
Replies: 334
Views: 33550

Re: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar

it's just because the THYS rowingbike is recumbent and has a smaller aeorodyanmic footprint. If you go back to my original posts in this thread, the motivation for having a rowing option is to mix up the exercize so we're not just sitting there spinning legs all day, rather than any specific effici...
by Warren
Apr 18 2018 1:13pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar
Replies: 334
Views: 33550

Re: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar

Question number 2? For a normal human, what is the most efficient bicycle design? Pedal or rowing? I want to transport my self 10 miles as fast as possible, using as little energy as possible. Should I buy a pedal or rowing bike? No hills but lots of wind. Pedaling is more efficient. On a flat road...
by Warren
Apr 17 2018 9:37am
Forum: E-Bike Build Threads / Photos & Video
Topic: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar
Replies: 334
Views: 33550

Re: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar

I definitely had calluses on my hands when I was riding my rowbikes. I also wore bike gloves. Most regular folks can produce about as much effort through their arms, as they can through one of their legs. On my setup, I could adjust the kevlar cable attachment point, on the steering riser, so that t...
by Warren
Apr 14 2018 4:54pm
Forum: E-Bike General Discussion
Topic: My recumbent cargo bike
Replies: 134
Views: 15984

Re: My recumbent cargo bike

From recent Montpelier trip.
Montpelier chargers.png
by Warren
Apr 14 2018 4:02pm
Forum: E-Bike General Discussion
Topic: Long bike rides!!
Replies: 13
Views: 731

Re: Long bike rides!!

miro13car wrote:
Apr 13 2018 10:57am
Warren can you spare me the search and give link to your Leaf cells build?
Do you ride on 31Ah or 41Ah Leaf cells?
58.80 Volt, Lithium-Ion
Seven, 2s2p modules from a wrecked 2015
Leaf. Running a 14s BMS from EM3ev, 10
amp (charge), 60 amps (discharge)

http://www.evalbum.com/5173
by Warren
Apr 13 2018 8:48am
Forum: E-Bike General Discussion
Topic: Long bike rides!!
Replies: 13
Views: 731

Re: Long bike rides!!

miro13car wrote:
Apr 13 2018 8:03am

With my 11S Nissan Leaf cells battery I dont have to worry about how much charge is still left.
Yes. Love those Leaf modules!!

https://endless-sphere.com/forums/viewt ... 9#p1372279
by Warren
Apr 13 2018 8:48am
Forum: E-Bike General Discussion
Topic: My recumbent cargo bike
Replies: 134
Views: 15984

Re: My recumbent cargo bike

Winter here in central Virginia was total crap. Cold, and or rain...worst winter in a decade. I was 55 days off the bikes. There were about five decent days in there, but I had cold and/or flu for all of them. Six rides, on this bike, since 03/29...466 miles, 15,727 mi total, so far.
by Warren
Apr 05 2018 4:10pm
Forum: E-Vehicles General Discussion
Topic: Tesla crash Mountain View California
Replies: 54
Views: 3355

Re: Tesla crash Mountain View California

LockH wrote:
Apr 05 2018 12:09pm

Simple solution? Shrink the size and weight and speed of the vehicle (see "ebikes").
Bingo!

https://youtu.be/GRMuO-zfaNs
by Warren
Feb 01 2018 9:51am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 3829
Views: 277112

Re: Sur-Ron - New Mid drive Bike from China

tigcross, "I keep my top speed to about 45 kph...I am always pedaling. That seems to keep the cops around here happy" Indeed. That is the secret. Going on 8 years now...two on the huge cargo bike. Stay at 30 mph and below, and always pedal, and you will be invisible. I have actually stopped, and str...
by Warren
Jan 25 2018 11:52am
Forum: Large EV General Discussion
Topic: Chevy Bolt first drive
Replies: 150
Views: 18635

Re: Chevy Bolt first drive

Yesterday, I drove up to the other co-op 5 megawatt installation.
Zions crossroads PV.jpg
Zions crossroads PV.jpg (77.61 KiB) Viewed 2836 times
Zions Crossroads PV 2.jpg
Zions Crossroads PV 2.jpg (78.15 KiB) Viewed 2836 times
i need to try buffing the lens on my old flip phone. It has gotten so scratched that it looks like I am shooting through gauze. :-)
by Warren
Jan 24 2018 10:14am
Forum: E-Bike General Discussion
Topic: My recumbent cargo bike
Replies: 134
Views: 15984

Re: My recumbent cargo bike

I was surprised to see how long it has been since I posted to my cargo bike thread. I've ridden it 1,100 miles since September, which is low for me, but the last month and a half have been crap for riding. This week, we appear to be back to our regularly scheduled, warmer than average weather. Yeste...
by Warren
Jan 23 2018 5:01pm
Forum: Large EV General Discussion
Topic: Chevy Bolt first drive
Replies: 150
Views: 18635

Re: Chevy Bolt first drive

I already missed my opportunity. They crashed one up the road from us at the Insurance institute. The local salvage yard had all parts. I missed all the good stuff. Car has enough "modules." http://www.mandmautosalvage.com/cgi-bin/search.cgi?userSearch=exact&userPID=9198&userLocation=All+States&user...