recumpence
1 GW
Hey Guys,
I started this build a while back. But, with the Astro group buy and a few large orders, I was bogged down. I finally found some time to take some pics of the build so far. I will be working on this over the next couple weeks in the evenings and weekends.
Anyway, I am using a 7 turn wye 3220 (Mitch's original motor I swapped him for :wink: ). I will be running 12S 10ah 25C Flightmax lipos through a HV160 controlled by Fechter's current limiter. I am innitially building this with a belt drive reduction unit. So, I will limit it to 4kw. If the belt does not like the torque, I will go with a chain (it is in the case anyway). But, for efficiency sake, I want to try the belt with the 3220. I will probably move to a chain. But we shall see. This build is more about efficiency and light weight than power. But, hey, a little power isn't a bad thing!
So, the drive unit is a direct bolt-on affair using my 2 inch frame mounts. The only special thing I had to do to mount this on the 700 is make a longer bearing tube and jackshaft to move the drive to the right an extra 2 inches. This moves everything out of the way of the chain. It looks like the chain rubs the motor, but it doesn't.
Now, the battery boxes are an interesting item. I poured over this mount system for quite some time and finally came up with what you see here. This is basically my drive unit mount foot and 2 inch frame clamps along with a long piece of bearing tube. This allows nearly infinate adjustability and mounting variations while being SUPER strong! There are the two boxes shown on the left side of the trike and one on the right side just ahead of the drive (not shown in the pictures). Two boxes will hold the four 6S lipo packs and the other will hold the ESC and interface board.
I am targetting 30 to 35mph top speed with this trike. I have ridden it 30mph down hill and it is very stable. But, this thing is not as beefy as my KMX trikes. So, I do not want to go any faster than 35mph. Besides, I think the brake would object.
The weight should come in under 60 pounds. I really would like to see 55 pounds. But, that depends on how many little extras I mount. I will be adding a GPS and some little goodies that may up the weight a touch.
Oh, lastly, I am researching a couple 15X24 inch solar panels. I would mount one to each side of the trike at the rear flanking the rear wheel at about axle height. This would give me 60 watts of charging capacity. It would only extend my range a small amount. But, ultimately they would be used as a way to park in the sun and recharge without being near an outlet. That is still up in the air, though. I need to do more research.
Anyway, I am expecting this setup should be good for 20miles of modest riding without pedalling. Odds are I will mainly use the motor for accelleration and hill climbing. So, in that regard, a solar setup may be good because it will be always adding 50 to 65 watts wether I am pedalling, using the motor or stopped (assuming there is good sunlight). So, a couple solar panels could, indeed, increase my range maybe 50% or more if used in that manor.
So, that is pretty much it. I will post more pics as I have them.
Matt
I started this build a while back. But, with the Astro group buy and a few large orders, I was bogged down. I finally found some time to take some pics of the build so far. I will be working on this over the next couple weeks in the evenings and weekends.
Anyway, I am using a 7 turn wye 3220 (Mitch's original motor I swapped him for :wink: ). I will be running 12S 10ah 25C Flightmax lipos through a HV160 controlled by Fechter's current limiter. I am innitially building this with a belt drive reduction unit. So, I will limit it to 4kw. If the belt does not like the torque, I will go with a chain (it is in the case anyway). But, for efficiency sake, I want to try the belt with the 3220. I will probably move to a chain. But we shall see. This build is more about efficiency and light weight than power. But, hey, a little power isn't a bad thing!
So, the drive unit is a direct bolt-on affair using my 2 inch frame mounts. The only special thing I had to do to mount this on the 700 is make a longer bearing tube and jackshaft to move the drive to the right an extra 2 inches. This moves everything out of the way of the chain. It looks like the chain rubs the motor, but it doesn't.
Now, the battery boxes are an interesting item. I poured over this mount system for quite some time and finally came up with what you see here. This is basically my drive unit mount foot and 2 inch frame clamps along with a long piece of bearing tube. This allows nearly infinate adjustability and mounting variations while being SUPER strong! There are the two boxes shown on the left side of the trike and one on the right side just ahead of the drive (not shown in the pictures). Two boxes will hold the four 6S lipo packs and the other will hold the ESC and interface board.
I am targetting 30 to 35mph top speed with this trike. I have ridden it 30mph down hill and it is very stable. But, this thing is not as beefy as my KMX trikes. So, I do not want to go any faster than 35mph. Besides, I think the brake would object.
The weight should come in under 60 pounds. I really would like to see 55 pounds. But, that depends on how many little extras I mount. I will be adding a GPS and some little goodies that may up the weight a touch.
Oh, lastly, I am researching a couple 15X24 inch solar panels. I would mount one to each side of the trike at the rear flanking the rear wheel at about axle height. This would give me 60 watts of charging capacity. It would only extend my range a small amount. But, ultimately they would be used as a way to park in the sun and recharge without being near an outlet. That is still up in the air, though. I need to do more research.
Anyway, I am expecting this setup should be good for 20miles of modest riding without pedalling. Odds are I will mainly use the motor for accelleration and hill climbing. So, in that regard, a solar setup may be good because it will be always adding 50 to 65 watts wether I am pedalling, using the motor or stopped (assuming there is good sunlight). So, a couple solar panels could, indeed, increase my range maybe 50% or more if used in that manor.
So, that is pretty much it. I will post more pics as I have them.
Matt