Warrior trike build: weight -vs- strength testing
- Thread starter Simon
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They are just idlers on the ICE VTX? And does that machine have a rear swingarm arrangement with a shock like the Streetfox? Can't see one in the pic unfortunately. Wow that machine looks like it is moving fast while sitting still! But I don't know how comfortable it would be to "ride" / lay on?
Not sure how a mid drive motor would fit into the Warrior/Streetfox scenario, and since the rear wheel (direct drive) motor is whisper quiet, I don't think the weight down low back there is an issue. Also there is no chain jerking during shifting with a direct drive motor since the force is applied directly to the ground and not thru the chain. (I had one of these and they have no gear noise which I love) (no gears inside the motor)
maddox
0
The ICE VTX is a unsprung extremely light racing machine, and the double idler setup is ment to get the chain under the very low seat.
And yes, it's like a SR71 Blackbird. Supersonic, even standing still.
But the same idler setup will clean up the chainline in the Warrior. Maybe using a second chain tensioner and not a solid mounted idler?
And yes, it's like a SR71 Blackbird. Supersonic, even standing still.
But the same idler setup will clean up the chainline in the Warrior. Maybe using a second chain tensioner and not a solid mounted idler?
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How so? It must be a special arrangement?
What is an IGH?
DannyC
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Internal Gear Hub.
Popshot
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Just as atandard. Why should it jerk?
Never owned anything but hub motors, but let's say the mid drive motor is pulling you along. Now there's some chain tension, and let's say that the trike is equipped with a deraileur on the rear wheel. Then we go up a hill. Now we want to change gears to something lower so as to maintain speed. So how can we shift gears without a jerk on the chain system? Do we have to throttle back on the power to take the load off the deraileur to avoid yanking into the new gear or how does that work? I think the mid drive motors are built around the cranks and they can sense the cadence, but unless you temporarily reduce the pedal cadence or force somehow, the chain would feel the crunch.
But a hub motor will over run (reduce) the chain tension if there is more throttle added. This puts slack in the system and assuming the pedals are spinning a bit, the deraileur is happy and goes to whatever gear is selected- just like it does on the bike stand when you are testing the shifting. Of course you may or may not be adding to the bike's progress unless you once again have selected the correct gear, but you are still going up the hill and the chain never sees any abuse.
One last thing - motor noise from a mid drive motor = ICE Adventure 5,000 Mile Review | ICE Adventure - YouTube
Mid drive motor noise - see this You Tube video - ICE Adventure 5,000 Mile Review | ICE Adventure - YouTube
Great stuff, but any gears are noisier than no gears anywhere in the drive train. If I was going to run a motor drive at all, it would have to be a gearless hub motor- induction motor. The only moving part is the main rotor and the shaft bearings. There is no planetary gearbox or carbon brushes. The electronic power unit provides a very smooth 3 phase type of input. They don't have quite the starting torque in the smaller sizes, but that is the only thing you hear other than the magnetic pulses during acceleration. I could still hear the deraileur shifting too, but that to me is sort of a minimum distraction. I actually liked the sound of the motor hum knowing that it was running with very little friction and zero drag when no power was applied.
I think most any rear dropouts can be adapted to a hub motor, but the axle has a large diameter and two large flats machined onto it in order to keep it secure in the dropouts. Most hub motors are made in China of course, but so is almost everything else these days and they are about 300-500 dollars US. I don't know what the Bafang costs, but probably not less than that. Here is a non- waterproof brushless gearless model that is just an example- I have no affiliation or peronal experience with this brand, but Amazon will back it up.
I think most any rear dropouts can be adapted to a hub motor, but the axle has a large diameter and two large flats machined onto it in order to keep it secure in the dropouts. Most hub motors are made in China of course, but so is almost everything else these days and they are about 300-500 dollars US. I don't know what the Bafang costs, but probably not less than that. Here is a non- waterproof brushless gearless model that is just an example- I have no affiliation or peronal experience with this brand, but Amazon will back it up.
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