Endless Sphere

Jesus the Father.jpg I pray to the Father... Jesus Christ.... Jesus the Son.jpg ...that this crazy hack to stiffen up the Motor Mount will never surrender !!! So yeah, it kind of looks like a cross but it seems strong enough for the job. I'm calling it a win and moving on. It still ended up very li...

Chosen1Technology wrote: ↑

Mar 04 2022 6:22am

Any new updates??

Funny how if it's a fast bike and we don't hear anything we wonder....

POUCH In one word you solve all the problems relating to parallel. Use pouch cells as big in amp hour as your design requires and just do a simple series string of them. But then you devote your time to pouch compression and making sure those tabs are tightly connected... so it's always a tradeoiff...

Ultimately all packs are defined by the weakest cell. So if you have two series strings which you then combine as parallel "afterwards" then the weakest cell will exist "somewhere" in one of those two series strings. Let's take an example: Series One: 10.1 ah 10.2 ah 10.3 ah Seri...

Added Mount to Clamp Base.jpg So this took all day... Added Mount to Clamp Installed.jpg Enough for today. After installing it and using heavy force with my hands I was able to bend this mounting... so this is either a "fail" or a "redesign". I'm going to have to return to this ...

The rating for battery is 48v. 14.5 amp hr. Am I asking too much to try and achieve a range of 110 Kms?? So 50v * 15ah = 750wh roughly. Assuming 100km then that's 7.5 watts per km. My "guess" is no... you will more than likely output double that if not more. Instead let's assume 25 wh per...

I build my ebikes out of mild steel and have my own welder.

From a DIY perspective steel is easiest.

But if you only plan to use an existing frame I think Aluminum is fine.

My most recent project uses an Aluminum frame because I broke the old Aluminum swingarm.

I'm reminded of this long-tail thread The typical distance from bottom bracket to rear wheel axle is about 15". My swing arm is 30". So what the "double rear end" does is the same wheelbase, but mine pivots forward more. The wheelbase on this bike is 55". https://endless-sp...

Today's invention is for people who enjoy polluting air with massive amounts of horrific perfume smells. Some cultures use smell as a form of chemical warfare. Yeah, I agree... heavy overpowering perfume can give me a headache. And I find that 95% of women will select the most unpleasant perfume be...

Motor Disassembled.jpg There are potentially seven bearings but you can do just two rather than four inside the motor if you use a spacer. Motor Assembled.jpg Outside view. That thick steel bar sticking out will get welded to the swingarm clamp probably tomorrow. I'm going for a minimalistic look i...

Bottom Bracket Mounting Ideas.jpg So I was thinking of using some of my square tubing to attach the Bottom Bracket but instead of that I'm thinking of switching to some scrap metal that comes already shaped as a circle. This will allow me to do the big welding first and worry about perfect alignmen...

Are there any videos on how to grind #35 ? https://cart.electricscooterparts.com/80-tooth-sprocket-for-40-41-and-420-chain-with-g1-mounting-pattern 80 Tooth Sprocket for #40, #41, and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #40, #41, and #420 Chain 80 Teeth G1 Mou...

Put a 70T in place of the 53T and you get a 24mph. 14T-98T in #219 would give the same 24mph. Actually if the 70T would fit on his bike yeah... great idea. Do they sell them that big? What outside diameter would that be? My guess is it will be bigger than 10" because that's what a 100t #219 tu...

https://cart.electricscooterparts.com/10-tooth-sprocket-with-10mm-x-8-5mm-double-d-bore-for-35-chain https://cart.electricscooterparts.com/resize/photos/SPR-3510.jpg?bw=575&w=575 Basically you cannot go lower than about 10 teeth on ANY chain without having serious troubles. Having a shorter pitc...

I’ve got a double D output shaft, so I’m much more limited on front options https://thebigbearingstore.com/12-tooth-sprocket-for-35-roller-chain/ https://cdn10.bigcommerce.com/s-emvqxmmb/products/2560/images/9461/bsprocket__87368.1421684086.1280.1280__10429.1421684393.1280.1280__67030.1421948852.26...

Sounds like Albania. In "Wag the Dog" it's always Albania. But you never know... it also could be Space Aliens from Uranus. Or something localized. Actually my router seemed a bit "off" today so I restarted it so maybe there is some type of low level attack on routers and other t...

https://cdn.shopify.com/s/files/1/2398/3077/products/imageedit_171_6303187192_91fa2496-b8d6-4d19-807a-e20e8f20ea39_740x.png?v=1644861402 https://batteryhookup.com/products/samsung-ev-lithium-ion-12s-44-4v-47ah-2-07kwh-module-used Samsung EV Lithium Ion 12s 44.4v 47ah 2.07kWh USED $96/kWh $200 Compl...

I get away with an 11t to 100t... the 100 tooth sprockets are rare. 14t to 98t gets you 7 to 1 reduction. One thing... anything below 12t and you need a roller AFTER the power runs past the front sprocket to keep the chain wrapped tightly. Smaller sprockets will skip if you don't add a roller. More ...

simonov wrote: ↑

Feb 28 2022 1:21pm

I'm thinking about starting with a KMX.

viewtopic.php?t=51873&start=100



Fat Tires.

Just add side pods and you are a cargo bike.

#219 Go Kart Chains :bigthumb: Very small pitch to allow high gear reduction ratios and very strong because they use them on 15 horsepower go karts. You can buy the rear sprockets on eBay for $20. It's the front sprocket that is more difficult... usually involving some adapting. You can buy #35 size...

72 volts to get to 4900 rpm means a kV of 68. So at 10 volts you spin at 680 rpm. 10 tooth to 53 tooth means 5.3 reduction. Then 10 volts translates to 128 rpm at the rear wheel. By the time you reach about 40 volts your speed would be something like 30 mph I would guess. The bottom line... and what...

Bike Stand Mostly Done.jpg Another tedious day because on this Bike Stand I needed to get a very specific narrowing set of tubes then go through all the difficulties of getting it aligned. I think it's good. A little sticky on getting the bike off the stand but with some sandpaper or the grinder or...

Okay... so recumbent, trike, cargo, solar and can swim in the water too.

Combine everything into one vehicle.

Frame lightweight and incredibly stiff in all important dimensions. Real thing of beauty. Someone earlier in this build thread asked "Why did you choose square tubes and not round ones since round is by weight stronger?" And the answer is square is easy to cut and easy to weld. I took mos...

Has anyone done something like this? Basically a recumbent trike with side pods for cargo. I'd love to hear more about this idea, perhaps in another thread. I'm mulling a plan to build one or two off-road fat tadpoles for overnight camping in places accessible via jeep trail or fire road. Not stric...