my latest delta project

hugh

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This is my latest delta trike. Front wheel is 24", rear wheels are 26". The frame is based on an Atomic Zombie trike with a coroplast body fastened to a tube frame. Power is routed from the pedals through a jackshaft to the left rear wheel and the right rear wheel has a Golden Motor Magic Pie direct drive hub motor. It uses a Grin Tech Cycle Analyst computer which allows the power level and speed to be set. Also it has a PAS and a throttle. I keep the power set to a max of 220 watts which allows me to cruise between 17 and 22 kph depending on the incline of the roadway. It has mesh front and rear to allow for airflow to cool both the rider and the 2 48V batteries which are located behind the seat.


 

PaulT

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This is my latest delta trike. Front wheel is 24", rear wheels are 26". The frame is based on an Atomic Zombie trike with a coroplast body fastened to a tube frame. Power is routed from the pedals through a jackshaft to the left rear wheel and the right rear wheel has a Golden Motor Magic Pie direct drive hub motor. It uses a Grin Tech Cycle Analyst computer which allows the power level and speed to be set. Also it has a PAS and a throttle. I keep the power set to a max of 220 watts which allows me to cruise between 17 and 22 kph depending on the incline of the roadway. It has mesh front and rear to allow for airflow to cool both the rider and the 2 48V batteries which are located behind the seat.


Sweet ride
 

hugh

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No rag top, instead I gave it this hardtop which is still being tweaked. I tested it in a heavy downpour and it will be upgraded over the summer.
 
D

Deleted member 4845

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How is the power levels between the two rear wheels balanced?

Nice ride.
 

Heavyload

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Have you been invited to any parades? Might make a nice float.... Just kidding... I applaud your engineering and creativity. I prefer the road less traveled myself.
 

hugh

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Nelson the power between the 2 rear wheels is not balanced. I thought about a differential then dismissed the idea. A solid axle causes issues when turning, I used to build off road jeeps with detroit rear lockers so I'm somewhat familiar with the handling quirks. Bikes of course are not in the same category of course but it gave me an idea of what to expect.
On the bent rider forum a couple members thought having 2 separate drive lines especially with the power of the hub motor would cause the ride to be not smooth and have a tendency to pull to one side from the torque. That has been proven not to be the case, there have been no weird handling quirks noticed yet and the trike now has prob over 400 km's on it. I do like the redundency factor. The manual driveline is fairly robust, it's overall gearing is easy to alter and I'm sure I will never break anything by applying to much leg power. The completely separate hub motor can be controlled by the PAS or with the throttle if the pedal driveline were to fail.
In town power is usually kept to 111 watts, occasionally bumping it up to level 2 at 222 watts. With people, pets, bike riders on the MUP's my preferred speed around 17 kph is ideal. Our roads when I do use them are in bad shape due to the extreme weather my city experiences. In summer it will sometimes hit 100F plus and in winter it can go lower than minus 35. Now I,ve been wanting to test the trike at higher speeds and on the 23rd met some friends at a nearby provincial park with a nice wide shoulder for bikes. It was 3 riders on higher end road bikes and 1 on a homemade tadpole trike. On our usual loop around the park I bumped up the power to level 3 that happened to 444 watts. On a slight downhill it hit 38 kph. I think wind resistance was the main factor it wouldn't go any faster. On level ground it could hold 32 kph or 20 mph. One of the road riders decided to draft behind me similar to a pelaton. We got to the end, sat at a picnic table and had time for a beverage before the others caught up. And I got to try a faster speed then usual and again no weird handling.
Heavyload, no parade invites, this trike is almost a parade of it's own. I've had cars slow down and then see the camera taking pictures, also a few people have stopped me to inquire where I got it, then sometimes would you build me one? Lot's of thumbs up, sweet ride, kids especially like it. Some adults smile, a few laugh. At 69 I don't mind any reaction, I like it and it puts a smile on my face when riding.
 
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