jamesp
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Member since October 2012
Posts: 36,179
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Post by jamesp on Mar 13, 2021 4:28:51 GMT -5
I opted for an electric bicycle that is built similar to a motocross motorcycle to go most anywhere. Rather radical in it's drive train design. Electric vehicles are here to stay, might as well delve into some cutting edge technology. Instead of a loud 0 to 8000 rpm 2 stroke engine it is is equipped with a silent high torque 0 to 800 rpm electric motor. slower rotation speed = quieter operation Less horsepower/pound but higher torque per pound than high performance moto-cross motorcycle. Weighs less than gas powered at 130 pounds. This factor should be very interesting. Payed a lot but it is cutting edge electric bike technology. I also intend on reproducing similar designs with off-shelf lower power motors and components. Perhaps a hobby business. I could find only 2 other operations manufacturing these. One in Cali and one in Germany. Both BUSY. 41 pound battery @10,000 watts compared to 5 pound battery @500 watts in my present mountain ebike that overheats when climbing steep terrain. Medium steep = 1000 foot constant elevation gain in 1.3 miles or ~15% grade. Completed mid-motor bike out of Munich Germany. Rated at 60 miles and 15,000 elevation climb with one charge at light throttle: First of three shipments containing rear swing arm and larger rear wheel high torque climbing sprocket and street/trail sprocket: Powder coat, welds, hardware on par with a Porsche. Motor weighs 28 pounds and spins in place 2.3 time faster than rear wheel. Regenerative braking can be turned on or off. Unlike a gasoline engine the rotating mass of the motor assists in forward movement even when throttle is lowered. With regen turned on the motor recharges battery at 30% efficiency whatever that means. Perfect when doing the downhill runs for braking and recharge.
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Post by HankRocks on Mar 13, 2021 7:08:03 GMT -5
Leave it to the Germans!!
One question? Where do you put the rock buckets?
Henry
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Post by hummingbirdstones on Mar 13, 2021 9:55:27 GMT -5
The seat design on that German bike looks really uncomfortable. I'm wondering how painful it would be if you hit a bump.
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Post by greig on Mar 13, 2021 11:02:51 GMT -5
Sweet setup and build, as long as you have places to recharge on your trips.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,179
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Post by jamesp on Mar 13, 2021 12:37:35 GMT -5
Leave it to the Germans!! One question? Where do you put the rock buckets? Henry A saddle bag or some sort of container will be in the making Henry. Rated at 320 pounds carry capacity leaves 140 pounds for rocks. Fast travel time should make shuttle trips to unload feasible. I'm not going to ride kamikaze like the kids do with their high altitude jumps etc. The high amperage is needed simply for climbing. Ebikes do require high amp motors to climb steep terrain. Low power units do fine on more level ground. The white mountain bike plays a game, if you can peddle it up the side of a steep mountain in 'motor peddle assist mode' without it switching the (harmless) overheat breaker you have eaten your Wheaties that day. No cheating possible...
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,179
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Post by jamesp on Mar 13, 2021 12:42:20 GMT -5
The seat design on that German bike looks really uncomfortable. I'm wondering how painful it would be if you hit a bump. There should be times when it is advisable to stand on the foot pegs Robin. Guessing my bony butt will let me know in a hurry how hard it is. May be in touch with the upholstery shop !
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,179
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Post by jamesp on Mar 13, 2021 12:44:49 GMT -5
Sweet setup and build, as long as you have places to recharge on your trips. Thanks greig. Should be good for 80 miles on average terrain on one charge. Charge time is only one hour. Seems fast. Charges with 110vac outlet.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,179
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Post by jamesp on Mar 13, 2021 12:54:59 GMT -5
Apparently some California boys stuck this one together. Steel frame is fairly simple although this one has an aluminum swing arm. It is minimal in design. Most of the components are off the shelf from China. Must say they are the innovators of ebike electronic technology at present. Cali and Germany/Europe pushing the mechanical technology.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,179
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Post by jamesp on Mar 13, 2021 13:03:34 GMT -5
Take a ride
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pizzano
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Member since February 2018
Posts: 1,390
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Post by pizzano on Mar 13, 2021 13:19:51 GMT -5
Leave it to the Germans!! One question? Where do you put the rock buckets? Henry A saddle bag or some sort of container will be in the making Henry. Rated at 320 pounds carry capacity leaves 140 pounds for rocks. Fast travel time should make shuttle trips to unload feasible. I'm not going to ride kamikaze like the kids do with their high altitude jumps etc. The high amperage is needed simply for climbing. Ebikes do require high amp motors to climb steep terrain. Low power units do fine on more level ground. The white mountain bike plays a game, if you can peddle it up the side of a steep mountain in 'motor peddle assist mode' without it switching the (harmless) overheat breaker you have eaten your Wheaties that day. No cheating possible... When I'm out riding with intent to collect, I wear/carry my backpack..........mostly softball and smaller size material, never more that 30lbs. No need to clutter up the frame, forks, bars with drag and obstructions that always seem to cause pedal and balance issues and banging/flopping against the frame and rims.........eventually having to drop and adjust........although, in my case 50% of the ride is uphill or traversing switch-back........the other 50% roll, coast and brake......lol
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Post by HankRocks on Mar 13, 2021 13:19:59 GMT -5
All this talk of Bikes and Jumps, I couldn't resist!!
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pizzano
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Member since February 2018
Posts: 1,390
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Post by pizzano on Mar 13, 2021 13:25:48 GMT -5
Apparently some California boys stuck this one together. Steel frame is fairly simple although this one has an aluminum swing arm. It is minimal in design. Most of the components are off the shelf from China. Must say they are the innovators of ebike electronic technology at present. Cali and Germany/Europe pushing the mechanical technology. I've watched a few YouTube vids on this and a few other types............pretty well designed and durable, so they seem.........a little pricey but I'm sure that will change as popularity increases.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,179
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Post by jamesp on Mar 13, 2021 16:54:29 GMT -5
Apparently some California boys stuck this one together. Steel frame is fairly simple although this one has an aluminum swing arm. It is minimal in design. Most of the components are off the shelf from China. Must say they are the innovators of ebike electronic technology at present. Cali and Germany/Europe pushing the mechanical technology. I've watched a few YouTube vids on this and a few other types............pretty well designed and durable, so they seem.........a little pricey but I'm sure that will change as popularity increases. Always had a love of bicycles of every type. I was the elementary school kid that had 40 old bicycles piled in Dad's unfinished basement. My own shop. I was building low geared mountain bikes long before the word existed. Like stingrays with big knobbies front and rear and driving them down fast flowing rocky bottom creeks and giant mud holes. I learned the frame could be set up upside down. Reverse the forks in the bearing can.. Remove the crank arm in the bearing can and reverse it so it peddled clockwise when upside down. Long pipe in handle bar support tube for a 4 to 5 foot handle bar extension. These were driven standing up on the peddles. So the peddles were about 30 inches off the ground and you head was at standing height plus 30 inches. This mid-motor bike is so different than anything else ever encountered it had to be had. Plus I got lots of plans for using it.
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Post by Rockoonz on Mar 14, 2021 0:14:05 GMT -5
jamesp sounds like you're doing a lot of research that parallels a direction I want to go. I have had a desire to build a tadpole style recumbent trike for some time, and within the year I should have the resources and the time. I was toying with the idea of a combined shaft and chain drive for the long stretch between crank and rear wheels, and my original thought was hub motors on the front wheels for an assist. The mid motor would simplify things a lot, wonder if there are options for the guy who only wants the basic power train parts.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,179
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Post by jamesp on Mar 14, 2021 11:16:29 GMT -5
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,179
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Post by jamesp on Mar 18, 2021 5:51:42 GMT -5
Package 3 of 4. The main frame. Last thing left is wheels/front forks. Main frame(and swing arm frame)are easy ones to fabricate on a welding jig... Inquired about becoming a distributor too. In time I believe the government will relax restrictions on electric vehicles.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,179
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Post by jamesp on Mar 18, 2021 5:55:56 GMT -5
All this talk of Bikes and Jumps, I couldn't resist!! Lol Henry. Hope to not end up on a stretcher. You guys sent some hell weather our way. Front just now slamming Atlanta Thurs. morning, wow.
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