Recent content by silverheels

Here is a diagram of a similar drive, this one is drawn by Mark Drela: Here is one of Rich Willoughby's implementation of a Flexdrive: And a short video showing another version of the Flexdrive. This version is strut-less and self aligns to the water flow...

Background This is for use on a Hybrid Human/Solar powered boat. The Torqeedo will replace a modified Minnkota motor that is driven by a generic PWM with power supplied by a 200ah 24v LifePo4 (8s) battery system. I hope to keep the current 24v system. Desired outcome: Be able to efficiently...

Yet more good advice. 1 Battery ordered. I'll post the test results. Thanks!

Good points. Planning to purchase 12 batteries (approx $210 US) for 144 cells. Of which I'm hoping >120 cells in ok shape. After testing each cell (to check capacity/health) I'll build a(an?) 8s15p pack that uses the Torqeedo BMS. 8s15p Pack info: Nominal: 29.6 v (max 33.6v)...

I've been using a BOB for 5 years now. Camping, shopping, touring w/long-range battery packs ((54kg batteries + 25kg of travel stuff) - no handling issues). Most impressed/ recommend it. Adjusting the tire air pressure was the key to smooth towing. My bike is LW recumbent (Ryan Vanguard)...

Or less: 12 cells (2600 mah) for <$18.00 Ebay listing: New 12-Cell 14.8V 7800mAh Laptop Battery for HP Pavilion DV8 DV7 HDX18 Series Link: http://www.ebay.com/itm/New-12-Cell-14-8V-7800mAh-Laptop-Battery-for-HP-Pavilion-DV8-DV7-HDX18-Series-/131604084606?hash=item1ea436f77e:g:-TgAAOSwQTVV98iZ

On Ebay it would seem there are a number of 'New' Laptop batteries with 12 Cells for approx $21 delivered (within the US): Example: Title: Genuine Toshiba Satellite P10 P15 Laptop 12 Cell 6450mAh Battery PA3307U-1BRS: "Genuine Toshiba Satellite P10 P15 Laptop 12 Cell 6450mAh Battery...

I'll take one! PM sent. -Mark

Compare this scavenge system: HT/HS motor with bearing mod similar to Keynes bearing mod. Holes for 4 x 6mm OD (1/4") pipes (in addition to the phase and temp sensor wires - no halls on this motor). Two pipes for oil input spray near the top of the motor on each side of the stator. Two pipes...

As far as 'getting off the line' is concerned, I would say dogman hit the nail on the head. These controllers always end up driving the motors 'forwards' unless there is some resistance (perhaps slight incline) in which case they 'cog' backwords, try to drive forwards and stall out. On the...

Andje, That's a chunk of power! How're going to cool the motor in the summer? Oh that's right, that thing on the right hand side of the handlebars ... is not an 'on/off' switch it's a throttle :shock: ...! Talking about Frying.. I blew a FET on my commuter bike yesterday. It's an eZee...

Cool! I'm looking forward to seeing how 4kw feels... How do you charge your LiPo pack(s)? Not knowing much, and having read too much, but understood little... I'm playing the conservative card with the LiPo charging deal. Got any hints?

Thanks Dogman, I appreciate the feedback. I'm thinking I'll run without vent holes initially. I've got a test regime in mind, and I'll be monitoring the temps with an internal sensor (yup, gunna run two more Cat5 wires through the axle... :} ), then when I've got a better understanding of the...

Stumptown = Portland OR. Not quite sea boarding (approx 60-65 miles inland), but pretty close. Plenty of rain here-abouts, but some really great scenery to make up for it! So, if I need to vent it, then 3/4" holes near the center on one side, and 1/4" holes (lots of them) as close to the...

Good to hear that! I guess that as soon as I start playing with it, I'll know whether or not I'll need vent holes in the 9C. How does one protect the hub if it's vented (it rains a little bit, you know, on and off, here in Stumptown !!!)?