Search found 65 matches

by NorCalTuna
Jan 01, 2011 4:02 am
Forum: E-Bike General Discussion
Topic: Turbojet assist electric bike
Replies: 11
Views: 757

Re: Turbojet assist electric bike

The most exotic government program Bob Lazar ever got involved with is mk ultra! That thing looks awfully slow. My girlfriend laughed at it the whole time.

wow. 2400 bucks of sucks.


(happy new year!)
by NorCalTuna
Dec 15, 2010 7:42 am
Forum: E-Bike General Discussion
Topic: Speedict Ebike - Anybody seen/tried this?
Replies: 1331
Views: 117100

Re: Speedict Ebike - Anybody seen/tried this?

I saw that and think it's a super cool product, and I felt a tinge of envy as I am an iPhone user. Of course, that brought up another couple of bucks I wish I had never spent: I bought an iPhone holder for my handlebars at the LBS. I used it once, and here's why: I wear gloves. I'm a musician, and i...
by NorCalTuna
Dec 07, 2010 2:47 am
Forum: Items for Sale - New
Topic: 2 X stopping power
Replies: 17
Views: 2056

Re: 2 X stopping power

what size spokes can it accommodate? That hub is sweeeeet....
by NorCalTuna
Dec 06, 2010 7:44 am
Forum: Items for Sale - New
Topic: 110 chainring adapter plates, 6 bolt disc brake mount
Replies: 13
Views: 1663

Re: 110 chainring adapter plates, 6 bolt disc brake mount

could the chainring be made hard enough to be used as a brake disc? I know it'd gum up the chain in time but, whatever! You could fit the caliper in the area between the chain entry and exit...
by NorCalTuna
Nov 12, 2010 9:07 pm
Forum: E-Bike General Discussion
Topic: Spoke Washers? (redux)
Replies: 23
Views: 3070

Re: Spoke Washers? (redux)

I appreciate that JRH! I'm thinking I'm going to pull the project out of the LBC as they're unwilling to even entertain drilling the hub... I'll post some pics and talk to my fab guy and see what the weather brings. The other thought I had was having larger nipples made up.
by NorCalTuna
Nov 11, 2010 10:10 pm
Forum: E-Bike General Discussion
Topic: Spoke Washers? (redux)
Replies: 23
Views: 3070

Re: Spoke Washers? (redux)

To fill a little more info in, my front hub is fork specific and has 14 ga holes. My wheel is 6 mm, as it's uhh, a moped wheel. Thats why I'm stuck with the little nipples. I like the bushing Idea, I like it a lot.

I wonder if there's some little part from mc master carr...
by NorCalTuna
Nov 11, 2010 6:32 am
Forum: E-Bike Technical
Topic: Dyno testing for Ebikes
Replies: 14
Views: 698

Re: Dyno testing for Ebikes

I have access to- and factory training on- a DJ 250i load control dyno, although experience tells me that the brake app window will ratchet under the tiny power of a bike (the 250i uses an eddy current bus brake). It'll be useful for finding saturation point, the place where diminishing returns are ...
by NorCalTuna
Nov 10, 2010 6:32 am
Forum: E-Bike General Discussion
Topic: Spoke Washers? (redux)
Replies: 23
Views: 3070

Spoke Washers? (redux)

Is it dangerous to run enough (aluminum) washer to mate a 6mm hole in a rim with a 4mm nipple? The wheel has dished spoke holes, and I'm imagining the aluminum washer deforming into the gap.

am I nuts?

thanks
by NorCalTuna
Nov 10, 2010 6:23 am
Forum: Battery Technology
Topic: Even Newer 4 to 24-cell Battery Management System (BMS)
Replies: 2168
Views: 199083

Re: Even Newer 4 to 24-cell Battery Management System (BMS)

I just wanted to chime in here with a voucher for gary's excellent kit quality. Part count exact (hey, a spare 1/8w resistor and a zener might be nice if there's a fault when testing...) and the boards are awesome, they came together perfectly. I had all 24 channels of my LVC setup stuffed and solde...
by NorCalTuna
Nov 04, 2010 7:10 am
Forum: E-Vehicles General Discussion
Topic: Auto site declares lock washers as useless?
Replies: 19
Views: 4080

Re: Auto site declares lock washers as useless?

re split washers, from the man himself (those guys shoulda just read their carrol smith) http://books.google.com/books?id=A81HmmRCN7YC&pg=PA116&lpg=PA116&dq=lock+washers+carrol+smith&source=bl&ots=ZvqLEGzAQs&sig=YcuHA0c3pNFI9ZyubJLcKWtyvFQ&hl=en&ei=lqHSTN6TKIX2tgORlYzqCg&sa=X&oi=book_result&ct=resul...
by NorCalTuna
Nov 04, 2010 6:46 am
Forum: General Discussion
Topic: What soldering iron...
Replies: 43
Views: 3468

Re: What soldering iron...

If you're going to EE school? check this bad johnny out: http://www.amazon.com/WD1001-Digital-Channel-Soldering-Station/dp/B000UMBAU2 yah, it's beaucoup bucks but relative to books and failure it's cheap, with 6 buck replaceable tips and 85w. The presets are rad- I idle mine at 350, then stab 660 fo...
by NorCalTuna
Nov 04, 2010 5:17 am
Forum: E-Bike Technical
Topic: What size nut fits on a Crystalyte x5304 front hub axle?
Replies: 24
Views: 3771

Re: What size nut fits on a Crystalyte x5304 front hub axle?

A great nut for this app is the 14x1.5 lug nut from a chevy truck or suburban, cone side out obviously. Skip the nylock as it uses up thread that can be better used applying clamping force (the axle flats also require a very stiff nut to not deform and still hook up) and not chewing up threads and a...
by NorCalTuna
Nov 04, 2010 5:01 am
Forum: Battery Technology
Topic: HK LiPo issue: Are returns even possible?
Replies: 3
Views: 279

HK LiPo issue: Are returns even possible?

my bike project is totally stalled (thanks economy) but i've been maintaining my 9 (one spare) HK 5ah 6s lipos. Unfortunately, one has now shown a delta v or 2.5 and the other over 3. I'm not impressed! Is there any information on how to work this out with HK? They were purchased in early summer and...
by NorCalTuna
Oct 27, 2010 8:04 pm
Forum: E-Bike General Discussion
Topic: Plea for Help
Replies: 1
Views: 204

Re: Plea for Help

i'm gonna bump this cuz I've had eye problems and surgeries and they're stressful enough without not having the loot, and my best friend, a remarkable classical guitarist, has the ear equivalent of this and is getting his surgery tomorrow courtesy of the US Army. I hope it doesn't seem trolly. good ...
by NorCalTuna
Sep 29, 2010 3:42 am
Forum: Battery Technology
Topic: Even Newer 4 to 24-cell Battery Management System (BMS)
Replies: 2168
Views: 199083

Re: Even Newer 4 to 24-cell Battery Management System (BMS)

I think it's a very prudent attitude. Richard et al could market a product- albeit with a buyer beware style warning, like "Caveat Emptor: LiPo Batteries are flammable and dangerous; this equipment is experimental, all risks are incurred by the user in any circumstance of use" but that won't really ...
by NorCalTuna
Sep 17, 2010 5:07 am
Forum: E-Bike General Discussion
Topic: NOPE
Replies: 2
Views: 227

Re: NOPE

uhh nope.
by NorCalTuna
Sep 15, 2010 8:34 am
Forum: Items for Sale - New
Topic: DC to DC Multi-Purpose Voltage Converter $14.98
Replies: 103
Views: 25841

Re: DC to DC Multi-Purpose Voltage Converter $19

ed, awesome box!

will we see a 100v version any time soon? how about adjustable current?
by NorCalTuna
Sep 08, 2010 4:58 am
Forum: E-Bike General Discussion
Topic: Idea for lights, no dc dc convertor needed.
Replies: 9
Views: 503

Re: Idea for lights, no dc dc convertor needed.

that will work, however, it will drain that group of cells at an uneven rate relative to the rest of the pack. you could call that an "unbalancer" if you like, as that's exactly what it will do, unbalance a chunk of your pack at 2 amps. DC-DCs aren't expensive, especially 27w 48v ones. Come on, do i...
by NorCalTuna
Aug 21, 2010 11:56 pm
Forum: E-Bike General Discussion
Topic: New Ride (thread redux!)
Replies: 22
Views: 1063

Re: New Ride (thread redux!)

The bike is a Specialized big hit FSR that has manitou dual crown sliders and a really nice shock. I'm trying to get a lot of bases covered- I'm not comfortable on superbikes (i'll start a thread in the everything else forum for my post-neck injury gas streetbike) so I like small, speedy useful bike...
by NorCalTuna
Aug 20, 2010 12:39 pm
Forum: E-Vehicles General Discussion
Topic: Lightweight electric car..... Nice!
Replies: 7
Views: 1180

Re: Lightweight electric car..... Nice!

that looks like a Lola F3 chassis! Google Russell FJR-50 to see what I suspect that chassis started as.
by NorCalTuna
Aug 19, 2010 10:09 pm
Forum: E-Bike General Discussion
Topic: New Ride (thread redux!)
Replies: 22
Views: 1063

Re: New Ride (thread redux!)

Naww, this weekends f'ed cuz the guy who does my fab works out of Infinion which is hosting IRL this weekend, but thats ok because I actually have real work to do! So, no swingarm rebuild yet The rear wheel is now apparently now trued and ready for the tire, etc. which I'll drop off tomorrow. The fr...
by NorCalTuna
Aug 19, 2010 4:47 pm
Forum: E-Bike General Discussion
Topic: New Ride (thread redux!)
Replies: 22
Views: 1063

Re: New Ride (thread redux!)

Yes, all the copper and cast aluminum sure add up. So yah, I'll revise that to 40 lbs rotating... : ^) The rack does appear to be overkill until you learn 2 things: the size of the 24 fet case and how close I live to a grocery store. I go at least once a day, returning with one to two bags and frequ...
by NorCalTuna
Aug 19, 2010 2:21 am
Forum: E-Bike Non-hub Motor Drives
Topic: Idea for folks blowing RC ESCs.
Replies: 13
Views: 890

Re: Idea for folks blowing RC ESCs.

The most insane part is this is real: http://www.youtube.com/watch?v=2NmU7VKd3VA Perfluorohexane is medically distributed under many names and even sold in cosmetics- a 58 buck per ounce "aging serum" which brings us to the real problem.... the ridiculous, eye popping cost of the stuff. 250gm (about...
by NorCalTuna
Aug 18, 2010 10:18 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Idea for folks blowing RC ESCs.
Replies: 13
Views: 890

Re: Idea for folks blowing RC ESCs.

Thats awesome. I'm gonna use the Perfluorohexane formulation (boiling at 56c) for a two phase cooling system on my x5. just inject a tiny stream into it and let it boil off! Side benefit? Perfluorohexane is a solvent, for pearly clean stators!