Endless Sphere

So? & You seem refer to a ducted FAN Ducted props avoid vortex losses at the tips. propfan2_1.jpg The propulsive efficiency of a propfan engine is increased by the high bypass ratio achieved using external fan blades. The efficiency boost is maintained even at high speeds because the fan blades are ...

You seem to equate 'fan' and 'propeller', fans are far less efficient than propellers under most conditions. At equal power: A large diameter propeller will produce more thrust, a fan, less because of the protective duct that surrounds the fan. Propellers are ancient, like Archimedes Screw, yet effi...

My Thoughts?
( 'Re-inventing the wheel' @ ~ $1K vs. a couple hundred clams every year. )

Select Comfort,
10 years and still AOK, mine inflated to ~ max P & 2" memory foam topper : I'll have a good night.

No, mine does not have the 'Sleep Number' feature , I don't need it

Last three other mattresses Sealy etc : 3 years before steel spring sag !

Try one , $ back guarantee

Wow again, I mean it looks legal, but really !
I thought the lights were for 'show'

How do you feed them, with your 'powerplant' battery?
Or Maybe a compact convenient 12V
Mike

FWIW: Aluminum extrusion AKA "Raspberry Pi" fins WITH thermal contact adhesive ( and extra adhesive fillets ) are working on my BBS02 Each fin unit is relatively small and can be applied like tiles. Not pretty or 'bolt on' like the bespoke Grin unit, but readily available and inexpensive. Good luck ...

One of the best "street" (?) electric motorcycles I've seen.
Nice job
Does it have a license plate?

Yes,
Small crimps work ~20 or 22GA ? for the low voltage and higher
Check continuity on all wires to find any damage hidden by insulation.
Good luck

Nice looking FS eBike, & fine paint
Nice work and good luck you can mount the battery on the top tube.

Nice eBike.
Suspended riding & impressive low weight !
Battery mount fits in there and looks strong.
What size is your chain ring?

I agree Pop Tart!
Heatsink fins are cooling my BBS02

Schwinn Twinn Crazy FAST & terrifying either pushing or steering A thrill ride by design. For paired racers, there is less wind resistance per set of legs. For the average couple, you can maintain a conversation while you pedal, plus if one member of the couple is a strong cyclist, the weaker cyclis...

You poor professional clarified thing; diagnosing sobriety over the phone because you're a psychic mind reader.
.

Funny
&
Wow

Interesting images.
Video of a Ti frame moving like that seems to call for some stiffening?

Yes !
POP a Wheelie-able
I want that.
It will will be an important feature on my next eBike build.
Mike

The Specialized "Epic" FSR had a rear suspension design that caught my attention for a possible hub motor build, because it does not interfere with 'the triangle'. Specialized Stumpjumper FSR shock mount design seems opposite of some (all?)

Bike has potential, I think, do you have a G T that fits? A Vintage Hydraulic brake maybe an option, Your pictured triangle looks bigger than the specialized = knock off? Imagine rocks like this GT winner vid, with power instead of pedaling. https://youtu.be/IZ0fsxv-KNw?t=112 Since the v-brake would...

Hi, Yes, I considered that model, LTS and your hub motor plan reads well to me. The bike looks good and linking the spring in that manner maybe superior to other designs. Articles I read about the GT indicated a good ride, maybe one of the best, a winner Complaints included squeaking which is effect...

:flame: Strips FWIW, solder is usually the worst (short of adhesives) way to bond stuff together, because it usually isn't as strong as a crimped (or bolted) connection, and has higher resistance, too. Where solder wins is in having a much larger wetted area than the area making firm contact in a ty...

. .

I have no question,
you must telephone Ali Express

Thanks Docware, Temperature effects, one of my favorites, especially at 30K feet , Mn 0.8, -20F Another new graph with fresh data and yummy. Just great! Doc,and all: We know that Energy is conserved: however on jet engines we use some fan compressed air to cool the cases, ( @ cruise / altitude ) for...

Thank You for documenting your work in these informative charts and graphs here for us to review. After 32 years analyzing graphical turbofan engine test data, I find myself happily reviewing each of your updates because perhaps I'm not seeing a 'downside'. No failures, and seemingly superior perfo...

Likely ? "The business license would likely give the official company name and a physical address." Try to look for such documentation in the US, and check the owner credentials for something to do next. Business 'entities ' maybe in each State where that business Exists. "Likely" this: a business ...