Search found 1340 matches

by MattyCiii
Sep 08 2020 9:37pm
Forum: E-Bike Build Threads / Photos & Video
Topic: A-Lines Abound: First ride after some major changes
Replies: 353
Views: 76086

Re: A-Lines Abound: First ride after some major changes

I'm still learning Fusion 360, so this was pretty difficult to craft. The first 1/3 section is hollow, and is just about large enough to house the motor controller (which is currently mounted in the black box on the seat tube). So I plan to move the controller there some day, make the bike look clea...
by MattyCiii
Sep 07 2020 6:48pm
Forum: E-Bike Build Threads / Photos & Video
Topic: A-Lines Abound: First ride after some major changes
Replies: 353
Views: 76086

Re: A-Lines Abound: First ride after some major changes

Recent picture.

The biggest changes since… whenever are:

1. Battery is now in the frame triangle, and

2. The rear fender, which I designed and 3D printed (it's only 2/3 done, but does a pretty good job as is.
IMG_1350.jpg
IMG_1350.jpg (88.94 KiB) Viewed 87 times
by MattyCiii
Sep 07 2020 4:07pm
Forum: E-Bike Build Threads / Photos & Video
Topic: The F3: "N minus one"
Replies: 186
Views: 47465

Re: The F3: Dahon Jetstream suspension pivot maintenance

"So what's next?" Here are my main options: 1. If a Dahon Jetstream comes available (specifically the 2010 and later model with the rear suspension triangle made of square tubing), I could buy it and basically rebuild this bike on a new frame. This option is highly unlikely, Dahon does not make thi...
by MattyCiii
Sep 07 2020 3:51pm
Forum: E-Bike Build Threads / Photos & Video
Topic: The F3: "N minus one"
Replies: 186
Views: 47465

Re: The F3: Dahon Jetstream suspension pivot maintenance

Then I saw it. A hair line crack on the frame at the hinge. It's right above the folding mechanism clasp. slightly right of and above center in the below pic. I made the decision to: First : replace the clasp. Why not, I have no other use for it. Then, Next : Take the electric drive system off the b...
by MattyCiii
Sep 07 2020 3:41pm
Forum: E-Bike Build Threads / Photos & Video
Topic: The F3: "N minus one"
Replies: 186
Views: 47465

Re: The F3: Dahon Jetstream suspension pivot maintenance

I was doing maintenance on the bike and I noticed it was "floppy" when I lifted it. I thought maybe there's play in the shock bushings, or in the suspension pivot - I'd better find out! So I picked it up/lowered it over and over till I saw where the "play" was. I was horrified to see it was in the f...
by MattyCiii
Sep 07 2020 3:25pm
Forum: E-Bike Build Threads / Photos & Video
Topic: The F3: "N minus one"
Replies: 186
Views: 47465

"N minus one"

Today might mark the end for this bike :( I found a crack in the frame. The crack is tiny - so although I no longer trust it as an electric bike, I am holding onto it for now as a regular pedal bike. Details follow. Below is the last picture of it configured as an e-bike (the battery is normally slu...
by MattyCiii
Sep 03 2020 8:38pm
Forum: E-Vehicles General Discussion
Topic: ES member "Farfle", RIP at 27
Replies: 7
Views: 818

Re: ES member "Farfle", RIP at 27

Sad news. Peace.
by MattyCiii
Jul 13 2017 9:30pm
Forum: E-Bike Non-hub Motor Drives
Topic: Shaft adapter, splined and threaded for freewheel and cog
Replies: 11
Views: 3495

Re: Shaft adapter, splined and threaded for freewheel and co

Thanks guys!
This is a very big help. I have a slight refinement off the design in the works and the advice on material choice is greatly appreciated!
by MattyCiii
Jul 04 2017 1:33pm
Forum: E-Bike Non-hub Motor Drives
Topic: Shaft adapter, splined and threaded for freewheel and cog
Replies: 11
Views: 3495

Re: Shaft adapter, splined and threaded for freewheel and co

OK, I'm maybe beating a dead horse here continuing to refine this design, but: 1. I'm learning Autodesk Fusion 360. Drawing different parts - and drawing the same part over & over- is helping me learn the program. 2. I've been watching some 'machinist porn' on youtube - lathe work and spline cutting...
by MattyCiii
Jul 03 2017 9:17pm
Forum: E-Bike Non-hub Motor Drives
Topic: Shaft adapter, splined and threaded for freewheel and cog
Replies: 11
Views: 3495

Re: Advice from experienced machinists please (see last post

How about using a cog with a six hole disc brake interface instead of cassette splines? Making six tapped holes is a lot easier and cheaper than machining the splines. As for material choise, I would use either 7075-T6 aluminium or 17-4 PH stainless steel. Avner. Thanks Avner! I'll look into this a...
by MattyCiii
Jul 02 2017 1:45pm
Forum: E-Bike Non-hub Motor Drives
Topic: Shaft adapter, splined and threaded for freewheel and cog
Replies: 11
Views: 3495

Some questions for experienced machinists please

OK I'm soliciting advice. If I can have this part made for a reasonable price, I will be moving forward with my next build. Here's where I need the help: Material : I definitely don't want the part to deform under load. Would 6061 or 7075 aluminum be OK? If not, what's the 'best' material to use (st...
by MattyCiii
Jun 16 2017 6:36pm
Forum: E-Bike Non-hub Motor Drives
Topic: Shaft adapter, splined and threaded for freewheel and cog
Replies: 11
Views: 3495

Re: MattyCiii's third build

Thread resurrection. In the 3 years since I started this thread I've made some design changes. I'll document them all later, but here's at least one detail: I'm going to mix RC drive electric power with human power using a jackshaft, behind the cranks and concentric with the rear suspension pivot. ...
by MattyCiii
Jun 11 2017 9:42pm
Forum: E-Bike Build Threads / Photos & Video
Topic: A-Lines Abound: First ride after some major changes
Replies: 353
Views: 76086

Re: A-Lines Abound: Wheel advice please!!

More info to follow... First ride on this bike in a long time!

Image
49991
by MattyCiii
Apr 26 2017 12:52pm
Forum: E-Bike Build Threads / Photos & Video
Topic: The F3: "N minus one"
Replies: 186
Views: 47465

The F3: Dahon Jetstream suspension pivot maintenance

The rear end of the bike started to get... wobbly. With each pedal stroke the rear would flop back-and-forth. I took the bike off the road to ensure it would not get worse. This post is about Dahon Jetstream suspension pivot maintenance. I'm going to say that again three times, because when I search...
by MattyCiii
Feb 12 2017 11:03pm
Forum: E-Bike General Discussion
Topic: Sitting in the pouring rain with 108v under my ballz
Replies: 27
Views: 2226

Re: Sitting in the pouring rain with 108v under my ballz

Had my controller catch on fire once, controller being below my balls and on top of 1/2 kilowatt hour of RC LiPo. I was glad it was raining, I ditched the bike above a puddle and started scooping handfuls of water on it.

Balls and batteries escaped just fine
by MattyCiii
Feb 12 2017 10:21pm
Forum: E-Bike Build Threads / Photos & Video
Topic: A-Lines Abound: First ride after some major changes
Replies: 353
Views: 76086

Re: A-Lines Abound: Wheel advice please!!

adam333 wrote:hmm... that's only 0.37 mm contact area though.
Thanks for pointing that out Adam. The 10mm washers obviously gave me more contact area. I'll have to proceed carefully...
by MattyCiii
Feb 11 2017 11:36am
Forum: E-Bike Build Threads / Photos & Video
Topic: A-Lines Abound: First ride after some major changes
Replies: 353
Views: 76086

Re: A-Lines Abound: Upgrades!

So like a fool I had my new spoke nipples sent to my old address. The good news is my cousin now lives in my old home, avoiding a whole "return to sender" mess. Having e-commerce sites store your address is convenient, but is a problem if you don't double check... My original wheel build I used the ...
by MattyCiii
Feb 09 2017 3:55pm
Forum: E-Bike Build Threads / Photos & Video
Topic: A-Lines Abound: First ride after some major changes
Replies: 353
Views: 76086

A-Lines Abound: Upgrades!

OK I'm doing some work on this bike. I stopped riding it much when I had a car cut me off and I braked hard. The rear wheel came off the ground some, and that scared me. I'm too old to do an endo, especially in traffic on such a heavy bike. In addition to some front suspension tuning (stiffen the Le...
by MattyCiii
Jan 28 2017 9:03am
Forum: E-Bike Non-hub Motor Drives
Topic: What are you guys building over the winter?
Replies: 40
Views: 6956

Re: What are you guys building over the winter?

Major upgrades to this bike: https://lh4.googleusercontent.com/-FJRAN845F2E/Ud9NHrCa_-I/AAAAAAAADAI/Pi2qA3qQ37Y/s720/DSCF4208.JPG I'm removing the two boxes from the front (from left to right - a removable Pelican case that contains the battery, and a box for controller/shunt/stuff). I have a new 50...
by MattyCiii
Jan 14 2017 12:13pm
Forum: E-Vehicles General Discussion
Topic: Bought a Pinion for my next E-Bike
Replies: 6
Views: 1167

Re: Bought a Pinion for my next E-Bike

"Fools rush in..." This drive came without cranks or a chainring. Crap. What have I done - after the excitement of having this marvelous device in hand wore off, I started to fear I now owned a $1000 paperweight. I wrote sales@pinion.eu asking how to purchase tools & parts (and still have not heard...
by MattyCiii
Jan 14 2017 12:12pm
Forum: E-Vehicles General Discussion
Topic: Bought a Pinion for my next E-Bike
Replies: 6
Views: 1167

Bought a Pinion for my next E-Bike

OK, I went out and purchased a Pinion P1-18 transmission for my next ebike. IMG_3235.jpg I basically bought the Pinion drive without a bike. I'll be designing and building a bike around it. Kinda like this silly advertisement: 6iEEbYIWhxM This will be the most ambitious bike build I've ever done, an...
by MattyCiii
Jan 07 2017 10:51pm
Forum: E-Bike General Discussion
Topic: Pinion Drive Technology
Replies: 9
Views: 1333

Re: Pinion Drive Technology

The Pinion freewheels at the front chainring. It can be configured with a 104mm spider and 2 front chainrings (one taking input from a mid-drive and the other to carry the chain to the rear wheel). The mid-drive would need a freewheel at its motor drive reduction shaft, otherwise pedal power will ba...
by MattyCiii
Dec 18 2016 12:19pm
Forum: E-Bike Non-hub Motor Drives
Topic: The first and BEST Qulbix Raptor mid-drive build!
Replies: 298
Views: 41935

Re: The first and BEST Qulbix Raptor mid-drive build!

Matt do you make those belt idler pulleys yourself?
by MattyCiii
Nov 16 2016 9:43pm
Forum: E-Bike Non-hub Motor Drives
Topic: The first and BEST Qulbix Raptor mid-drive build!
Replies: 298
Views: 41935

Re: The first and BEST Qulbix Raptor mid-drive build!

Matt-

Those toothed idlers on the electric drive side... did you make or are they off-the-shelf?
by MattyCiii
Nov 05 2016 3:39pm
Forum: E-Bike Build Threads / Photos & Video
Topic: A-Lines Abound: First ride after some major changes
Replies: 353
Views: 76086

Re: A-Lines Abound: Wheel advice please!!

Time for some work on this bike. See all that junk up front? https://lh4.googleusercontent.com/-FJRAN845F2E/Ud9NHrCa_-I/AAAAAAAADAI/Pi2qA3qQ37Y/s720/DSCF4208.JPG Way up front is a pelican case that contains the batteries. It's mounted to an aluminum box that holds a hidden GPS for theft recovery (Sh...