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| https://www.electricbike.com/lightning-rods-big-block/ |
The
heaviest thing I have hauled with my bike is bricks. But I was unable
to carry many of them. I need a motor and more importantly, a very
low center of gravity.
Most
people do not know how hard it can be to live without a car. Only a
few people have made any attempt to design a bike that can haul
really heavy cargo. I assume that I will have to build it my self.
How to build a Super Cycle Truck
Most states have a limit to how much power can be
used on a bicycle. 3500 watts is by far way too much for any kind of bicycle or
moped. A motorcycle however can handle it.
What does it take to build a motor cycle? Brakes
are the most important part. Double pad hydraulic disc brakes for bicycles
would probably not be able to stop a 600lbs vehicle (total combined weight) at
60mph. Motorcycle brakes would be needed, but that would require
motorcycle wheels also. Those brakes can almost definitely work at 30mph; not
sure about the rest of the wheel when braking, but BMX wheels can be built to
handle the weight of 300lbs each very easily.
Laws need to be explicit about how a 3500 watt
motor could be used on a moped. Low Gears need to be a prerequisite for all
powerful motored bicycles; As well as the brakes.
Most people are such dummies that they think of gears as something that are used to go faster. But the best thing to use them for is hill climbing with massive amounts of weight. 3500 watts can propel a 600lb vehicle on flat land at over 60mph, but if you set a single fixed gear to about 30 mph the vehicle can climb an 8% grade with the 600lbs, and not be driven over the 30 mph speed limit for a moped on flat land. And if you wanted to haul more weight up a steeper hill you could use a gear box with a lower gear, not a faster gear. Direct drive hub motors use two or three times as much power to move the same amount of weight up the same hill, they don't even use them on motor cycles.
I think the problem is that there are a lot of cyclists that don’t use gears at all. Gearless direct drive hub motors are made for racing. They claim more efficiency, but the best a hub motor can do is 75%. While a high speed high voltage motor like the Lightning Rods kit is up to 90% efficient, even with a very large gear reduction.
Hub motors will not work on steep hills with that
much weight. Even with the proper gears it takes about 1500 watts (moped's
limit) to move about 800lbs up an 8% grade at 10mph (13mph for 600lbs). With a
hub motor it would take roughly three times as much power, and moving that
slowly the hub motor would over heat severely.
Ladders can be hung on the side.
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| Base Frame Work Concept |
I designed this bike to be easy to build without a shop and all the nice tools usually found in such shops; because there will be a time soon that factory bikes will be too expensive for most people that need them. And don’t bother telling me that square tubes and flat bar are not stronger than round tubes! Most people don’t have a clue about engineering.
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| Suspension frame |
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| good example of a suspension frame |
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| https://endless-sphere.com/forums/viewtopic.php?f=6&t=41358&start=25 |
heavy duty bicycle wheels
a motor cycle braking guide  |
| How to add a disc brake tab to an old BMX fork |
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| 12mm axles should be used for this truck |
Power full hydraulic disc brakes are needed:
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| http://www.magura.com/en/bike/products/79-2014/gravity-series.html |
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| http://commutercycling.blogspot.com/2010/10/secrets-of-motor-pedal-hybrid-design.html |
Trailers verses front loading cargo
bikes:
A two wheel trailer will not corner
well with top heavy cargo. And if you are hauling a load heavier than your
trailer is designed for. The trailer can make your bike vibrate side to side.
It becomes more challenging for people
to fully control the bicycle as the cargo gets heavier. In the case of the
cargo holder dragged or installed in the back, riders won't be able to pay
attention to the cargo at all times.
When I was hauling a really heavy load down a not steep hill. My trailer started pushing the bike and the front end started vibrating side to side, out of control. I applied power to the pedals and it stopped. Good thing it was not a steep hill.
A really heavy load on a trailer may
need a brake or two riding down a steep hill or just too much speed, so that
the trailer would not push the bicycle. But how would you attach one?
Cable brakes are certainly out as
connecting them would be a nightmare and I seriously doubt that a cable that
long would work effectively. That means it's either gonna be electric or
hydraulic and then you would have to come up with a fool proof way to connect
them without injecting air into the hydraulic lines.
Pneumatic I would guess would be out since you would have no way to create
air-pressure to replenish a tank. If you do succeed in adding them how do you
apply them? A separate lever? That seems dicey.
a “surge brake system” would be the
thing to use.
When I was hauling a really heavy load down a not steep hill. My trailer started pushing the bike and the front end started vibrating side to side, out of control. I applied power to the pedals and it stopped. Good thing it was not a steep hill.
Pneumatic I would guess would be out since you would have no way to create air-pressure to replenish a tank. If you do succeed in adding them how do you apply them? A separate lever? That seems dicey.
The kind of cargo bikes
I want to build will be able to haul a load of bricks, and other building
materials. The total combined weight of a such a vehicle could easily be 550lbs
or more. I believe that I will have to use motorcycle tires just to make them
last longer.
And if you really need a
longer roving range on the level areas, you could use a second motor geared to
a higher ratio. Possibly even as low a power as 745 watts. Europe has severe
restrictions on the power used on non-licensed vehicle (one third HP). But in
America one HP motors are usable for most states, and something like a 1000
watts in the state of Washington.
I believe that a larger
than legal motor can be used if you use a good programmable controller. And it
would last longer than using a barley large enough motor.
The kind of cargo bikes
I want to build will be able to haul a load of bricks, and other building
materials. The total combined weight of a such a vehicle could easily be 550lbs
or more. I believe that I will have to use motorcycle tires just to make them
last longer.
And if you really need a
longer roving range on the level areas, you could use a second motor geared to
a higher ratio. Possibly even as low a power as 745 watts. Europe has severe
restrictions on the power used on non-licensed vehicle (one third HP). But in
America one HP motors are usable for most states, and something like a 1000
watts in the state of Washington.
I believe that a larger
than legal motor can be used if you use a good programmable controller. And it
would last longer than using a barley large enough motor.
I had a question. Have you drawn these sketches? Because they are looking like a real blueprint of a cycle.
ReplyDeleteYes I did it my self. It has taken me many years to be able to invent a bicycle. See others I had done on my blog.
ReplyDelete