Bad Knees Hybrid?
10-04-18, 09:45 PM
#1
Bicyclerider4life
Thread Starter
Bad Knees Hybrid?
My knees and hips are bad.
I'm thinking of putting a 48 volt mid-mount 1800 Watt motor on my trike, under the seat stays.
I always have a four wheel garden/nursery cart hooked up behind the trike.
A battery pack is going to give me a 18 - 20 mile range. Nothing is that close (round trip) from where I live.
I'm thinking of putting a small 1000 ~ 1200 Watt generator on the trailer, and run it to keep the battery pack charged. (I'll have to disable the no go when charging "safety" feature, of course.)
Any reason this would not work?
I'm thinking of putting a 48 volt mid-mount 1800 Watt motor on my trike, under the seat stays.
I always have a four wheel garden/nursery cart hooked up behind the trike.
A battery pack is going to give me a 18 - 20 mile range. Nothing is that close (round trip) from where I live.
I'm thinking of putting a small 1000 ~ 1200 Watt generator on the trailer, and run it to keep the battery pack charged. (I'll have to disable the no go when charging "safety" feature, of course.)
Any reason this would not work?
10-04-18, 10:18 PM
#2
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I know someone who had one of these and liked it: https://ridekick.com
10-05-18, 11:12 AM
#4
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Not aware of any mid drives that powerful (1800W). Does the Sun Trike use coaster brakes? Most of the commercial kits require disks or rims on the rear because you cannot back pedal. You may be able to find a TSDZ2 (Tong SHeng) model that supports coaster brakes.
On the other hand, if this is a one-off conversion, I think 500W will easily go speeds appropriate for an upright trike, like 12 mph.
If you get a charger that can put out 5A, it will take 2 hours to recharge a 10AH battery. You can probably go 15-20 miles on 10AH at trike speeds, moving 500 pounds unless you do a lo of stop/go. Getting 500 pounds to speed wlll suck up the amperes. I haven't done any calculations. Just an estimate.
On the other hand, if this is a one-off conversion, I think 500W will easily go speeds appropriate for an upright trike, like 12 mph.
If you get a charger that can put out 5A, it will take 2 hours to recharge a 10AH battery. You can probably go 15-20 miles on 10AH at trike speeds, moving 500 pounds unless you do a lo of stop/go. Getting 500 pounds to speed wlll suck up the amperes. I haven't done any calculations. Just an estimate.
10-05-18, 03:16 PM
#6
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I've read about individuals who used solar or other sources to power extra batteries while they rode, but not recharge the battery that's powering the bike. The most powerful "mid" motor that I've seen is from Paradox Kinetics, and not legal as a bicycle kit AFAIK. The Bafang BBSHD has a stock 30 amp controller IIRC, so with a 52V battery is 1560w.
10-08-18, 05:24 PM
#7
Nigel
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My knees and hips are bad.
I'm thinking of putting a 48 volt mid-mount 1800 Watt motor on my trike, under the seat stays.
I always have a four wheel garden/nursery cart hooked up behind the trike.
A battery pack is going to give me a 18 - 20 mile range. Nothing is that close (round trip) from where I live.
I'm thinking of putting a small 1000 ~ 1200 Watt generator on the trailer, and run it to keep the battery pack charged. (I'll have to disable the no go when charging "safety" feature, of course.)
Any reason this would not work?
I'm thinking of putting a 48 volt mid-mount 1800 Watt motor on my trike, under the seat stays.
I always have a four wheel garden/nursery cart hooked up behind the trike.
A battery pack is going to give me a 18 - 20 mile range. Nothing is that close (round trip) from where I live.
I'm thinking of putting a small 1000 ~ 1200 Watt generator on the trailer, and run it to keep the battery pack charged. (I'll have to disable the no go when charging "safety" feature, of course.)
Any reason this would not work?
1800W will provide too much speed for safety.
A battery like this: https://www.amazon.com/Battery-LiFeP.../dp/B07647LCRK NOTE: BTR will build you an even bigger battery if you so desire.
60V 35Ah = 2.1KWh which should be enough for more than 100 miles at 12-15 mph without pedaling as long as your trike and trailer roll freely.
Last edited by nfmisso; 10-08-18 at 05:27 PM.
11-05-18, 08:27 AM
#8
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Would it be not against the physical laws if you recharge a battery when it is used to power the motor at the same time?
11-05-18, 12:34 PM
#9
Senior Member
My knees and hips are bad.
I'm thinking of putting a 48 volt mid-mount 1800 Watt motor on my trike, under the seat stays.
I always have a four wheel garden/nursery cart hooked up behind the trike.
A battery pack is going to give me a 18 - 20 mile range. Nothing is that close (round trip) from where I live.
I'm thinking of putting a small 1000 ~ 1200 Watt generator on the trailer, and run it to keep the battery pack charged. (I'll have to disable the no go when charging "safety" feature, of course.)
Any reason this would not work?
I'm thinking of putting a 48 volt mid-mount 1800 Watt motor on my trike, under the seat stays.
I always have a four wheel garden/nursery cart hooked up behind the trike.
A battery pack is going to give me a 18 - 20 mile range. Nothing is that close (round trip) from where I live.
I'm thinking of putting a small 1000 ~ 1200 Watt generator on the trailer, and run it to keep the battery pack charged. (I'll have to disable the no go when charging "safety" feature, of course.)
Any reason this would not work?
12-06-18, 08:22 PM
#11
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I see no point in carrying a generator. Just an extra battery, or two ...
I wouldn't put that much power through a bicycle drive train on a consistent basis. you'll be tearing stuff down to replace parts fairly regularly. I'd go with a big rear hub kit. Use a 52v battery (or higher) to let the voltage do the work, vs amps.
I'd use a Phaserunner controller which can handle up to 90v IIRC ...
With that much chassis to play with, why not a much larger battery than is convenient on the two wheel rig? Something that would make a "floor" in the tow-behind ...
How fast do you want to "cruise" and do you have dedicated bike lanes, or paths?
I wouldn't put that much power through a bicycle drive train on a consistent basis. you'll be tearing stuff down to replace parts fairly regularly. I'd go with a big rear hub kit. Use a 52v battery (or higher) to let the voltage do the work, vs amps.
I'd use a Phaserunner controller which can handle up to 90v IIRC ...
With that much chassis to play with, why not a much larger battery than is convenient on the two wheel rig? Something that would make a "floor" in the tow-behind ...
How fast do you want to "cruise" and do you have dedicated bike lanes, or paths?
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