Search found 172 matches

by drewdiller
May 05 2011 11:41pm
Forum: E-Bike Technical
Topic: feasibility of pedal-to-generator-to-motor chainless bike?
Replies: 21
Views: 4332

feasibility of pedal-to-generator-to-motor chainless bike?

Hey guys, ballpark question here: If I were to hook up a bicycle crankset to a generator, and connect the generator directly to a hub motor such that human pedaling would (almost) directly power the hub, what kind of efficiency loss am I looking at? I realize that I would be paying an efficiency pen...
by drewdiller
Apr 21 2011 11:48am
Forum: General Discussion
Topic: Ya know what gives me the shits?
Replies: 6
Views: 674

Re: Ya know what gives me the shits?

Dude, I work in software. Solutions...

Solutions To Imagined Problems You Don't Really Have

You touched a nerve with me on this one. Drives me up the wall.
by drewdiller
Apr 19 2011 11:54pm
Forum: General Discussion
Topic: Wooden bicycles, lots of pics
Replies: 327
Views: 132712

Re: Wooden bicycles, lots of pics

Hey guys, I've just recently finished my second bamboo bike. This one is the world's first "fat bike" made of bamboo - like a Surly Pugsley if you're familiar with snow / sand biking. Check it: http://dillerdesign.com/random/bike/fat_bamboo_v1/beauty_and_the_beast.jpg Here's a very terse build log: ...
by drewdiller
Mar 07 2011 6:29pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Doctorbass ebike run at EXTREME CONDITION -25 celsius
Replies: 11
Views: 2626

Re: Doctorbass ebike run at EXTREME CONDITION -25 celsius

Been a while since I've visited E-S, thought I'd take a peek around again... This thread caught my eye, since I live in MN. DUDE. Pogies. Get some @$*#ing pogies. http://barmitts.com/ I can wear regular summer full finger cycling gloves down to about +10F ... colder than that, you'll need some regul...
by drewdiller
Jan 06 2011 1:29am
Forum: E-Bike Technical
Topic: DIY light hub generator examples?
Replies: 7
Views: 1023

Re: DIY light hub generator examples?

I should have clarified that this would be for a human power only bike, and I'm posting here for the expertise available on this forum.

I plan on making an electric fat tire bike, but not this one.

I've run some DC-DC converters on my road e-bike, worked really well.
by drewdiller
Dec 30 2010 12:55am
Forum: E-Bike Technical
Topic: Studded bike tires, selection and first ride impressions
Replies: 23
Views: 5846

Re: Studded bike tires, selection and first ride impressions

The studs are from a French company called UgiGrip. They're 11mm long. I wish I could have gotten my hands on some 10mm length studs instead. Basically you can get tungsten tipped studs in the US, but they're expensive, something like $1 per stud! These, I got off Ebay, 1,000 count for $42. While th...
by drewdiller
Dec 29 2010 3:57pm
Forum: E-Bike Technical
Topic: Studded bike tires, selection and first ride impressions
Replies: 23
Views: 5846

Re: Studded bike tires, selection and first ride impressions

Just sharing some pics of some carbide tipped studs that I added to my Surly Larry fat tires:
http://dillerdesign.com/random/bike/stu ... rry_tires/
by drewdiller
Dec 29 2010 3:52pm
Forum: E-Bike Technical
Topic: DIY light hub generator examples?
Replies: 7
Views: 1023

DIY light hub generator examples?

Hey guys! Been a while since I've posted here. I have a problem that is unique to this forum, but not all that unique in general. I wish to use a low drag generator hub like the very nice Shmidt SON hubs , but I can't. Those hubs have an O.L.D. of 100mm, very typical of a fork dropout. The bike I'm ...
by drewdiller
Oct 18 2010 11:23pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Let's see some e-bikes doing some work!
Replies: 6
Views: 1117

Re: Let's see some e-bikes doing some work!

StudEbiker wrote:Not only do I get to do my crazy paper boy impersonation from "Better Off Dead"...
Hehe. TWO DOLLARS!!

So far so good.
by drewdiller
Oct 18 2010 4:45pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Let's see some e-bikes doing some work!
Replies: 6
Views: 1117

Let's see some e-bikes doing some work!

I haven't posted here in a while, because I haven't e-biked in a while, been too busy off roading with my new-used Surly Pugsley (which I might electrify later this winter) . I must say getting back on an e-bike after having been without gave me the EV grin all over again :D It's fall, which means c...
by drewdiller
Jul 25 2010 8:51pm
Forum: E-Bike Technical
Topic: Through whom to ship a LiFePO4 battery?
Replies: 2
Views: 448

Through whom to ship a LiFePO4 battery?

Fedex, UPS, and USPS all tell me that my lame civilian self can't ship a battery though them. What gives? How does one sell and ship a used e-bike battery?
by drewdiller
Jul 20 2010 2:35pm
Forum: E-Bike General Discussion
Topic: bike crash video
Replies: 32
Views: 2343

Re: bike crash video

The second car that actually hit the dude, was very very likely having his view of the oncoming bike blocked by the car in front. Something to remember. If you take the lane to cross at a big light, most likely you are behind a car, and look like a space in the traffic to the cars across the inters...
by drewdiller
Jul 13 2010 1:07pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Forest Glider by Electric Goat
Replies: 4
Views: 942

Re: Forest Glider by Electric Goat

So is this something other than a Gruber Assist drive?
by drewdiller
Jul 12 2010 11:04pm
Forum: E-Bike General Discussion
Topic: Clipless pedals and efficiency
Replies: 18
Views: 1778

Re: Clipless pedals and efficiency

Having experience with both Power Grips and clipless pedals (I call them click-in pedals), I will say this: Power Grips are nice because they're cheap, simple, don't require special shoes, and keep your foot from falling off while biking off road. You can pull up on them if they're fit snugly to a g...
by drewdiller
Jul 06 2010 6:02pm
Forum: E-Bike Build Threads / Photos & Video
Topic: The 101 Club
Replies: 33
Views: 7857

Re: The 101 Club

Ah, okay. Yeah, I've fluctuated up to seven pounds when going from very hydrated to very dehydrated.
by drewdiller
Jul 06 2010 12:14pm
Forum: E-Bike General Discussion
Topic: New MagicShine Triple Headlights!
Replies: 11
Views: 2519

Re: New MagicShine Triple Headlights!

Did you hook this light into your main battery pack, or are you running it off of the small rechargables? I actually sold the unit to a friend, I was running off the little rechargeable pack they come with. I've since moved onto a pair of the older model, the 900 lumen (though it's more like 700), ...
by drewdiller
Jul 05 2010 4:19pm
Forum: E-Bike Non-hub Motor Drives
Topic: Currently a hub user. Which way should I go?
Replies: 11
Views: 1900

Re: Currently a hub user. Which way should I go?

I've always loved the Surly Pugsley but wanted front suspension. Now that "29er" forks... The folks at the mtbr Fat Bikes sub forum have referred to this fork repeatedly: http://www.universalcycles.com/shopping/product_details.php?id=3531 Apparently if you reduce the travel sufficiently, it clears ...
by drewdiller
Jul 05 2010 1:35pm
Forum: E-Bike Non-hub Motor Drives
Topic: Currently a hub user. Which way should I go?
Replies: 11
Views: 1900

Re: Currently a hub user. Which way should I go?

Here's another perspective of the bike, those tires are WIDE, can't wait.
by drewdiller
Jul 05 2010 11:35am
Forum: E-Bike Non-hub Motor Drives
Topic: Currently a hub user. Which way should I go?
Replies: 11
Views: 1900

Re: Currently a hub user. Which way should I go?

The little cutie isn't going to have enough power to get you thru the snow, except at near walking speeds, which may not be a bad idea in the snow and ice. Right. I wish I had two throttle modes. One "normal" and one "tractor". There are some modes of ice that are dangerous even with studded tires....
by drewdiller
Jul 05 2010 12:19am
Forum: E-Bike Non-hub Motor Drives
Topic: Currently a hub user. Which way should I go?
Replies: 11
Views: 1900

Re: Currently a hub user. Which way should I go?

jondoh wrote:how many volts? What is the wattage of your controller?
36V Headway pack, 22A controller, so about 800W peak.

At its top speed - 16mph / flat ground / no wind - it consumes 200 to 250W.
by drewdiller
Jul 04 2010 11:35pm
Forum: E-Bike Build Threads / Photos & Video
Topic: The 101 Club
Replies: 33
Views: 7857

Re: The 101 Club

wasp wrote:i have lost 12 pounds in 2 weeks now that i am pedaling lol
Are you serious?! That sounds unhealthy. If you're not getting sick, then nice going, but damn...
by drewdiller
Jul 04 2010 4:29pm
Forum: E-Bike Non-hub Motor Drives
Topic: Currently a hub user. Which way should I go?
Replies: 11
Views: 1900

Re: Currently a hub user. Which way should I go?

This image should work (credit to this guy's blog):

Image
by drewdiller
Jul 04 2010 2:35pm
Forum: E-Bike Non-hub Motor Drives
Topic: Currently a hub user. Which way should I go?
Replies: 11
Views: 1900

Currently a hub user. Which way should I go?

I ride on a single speed Cute 128 rear hub with an Infineon controller. It tops out at 16 mph and I worry about driving it hard up hills (and, I wish it had more torque for more serious hill climbing ability). I want to build another e-bike. This will be a snow e-bike, I want it trail worthy in Nove...
by drewdiller
Jul 04 2010 1:46am
Forum: E-Bike General Discussion
Topic: 36V 20A/H without pedaling ?
Replies: 10
Views: 976

Re: 36V 20A/H without pedaling ?

lester12483 wrote:With my vpower 36v 20ah battery. I got 60 miles distance going about 14mph steady. Im 210 lbs.
No pedaling?