thebeachtoday
1 mW
- Joined
- Sep 29, 2020
- Messages
- 14
Love the upper control arms! Like seeing things that are made out of shit laying around but will function perfectly for what you need
My first scratch build: 30kw full suspension tandem velomobile.
- Thread starter tymotors
- Start date
Chalo
100 TW
It's almost like generation after generation after generation of clever cycle designers ran into the same downsides of trying to turn a bike into a glider. Who'da thunk it?
The only person I ever knew who commuted in a fully faired HPV was not rooted in the same world as the rest of us.
And to date, I think I've seen more folks doing regular transportation on unicycles than on recumbents. The numbers are similar, though.
The only person I ever knew who commuted in a fully faired HPV was not rooted in the same world as the rest of us.
And to date, I think I've seen more folks doing regular transportation on unicycles than on recumbents. The numbers are similar, though.
He reminds me a bit of someone I know very well. 
If it weren't so hot here, I would have done the fully faired thing with CrazyBike2 for better efficiency, but I would have baked everytime I stopped moving (which is often, in traffic here). I had a plan to use the flat plastic cylinder sections of 2-liter soda bottles (which I had collected more than enough of at one time, to try it out), but realized after some experiments with just the bottles sitting in the sun that I would never be able to ride inside that, without an active cooling solution that would require a misting system in the "cabin" at intake vents, and exhaust fans sucking air out in whatever place would force this cooled air past me from head to toe. Would also require a "closed bottom" to prevent the 150F+ air from the road surface from wafting up into the "cabin" while sitting there among all the cars at traffic controls.
If it weren't so hot here, I would have done the fully faired thing with CrazyBike2 for better efficiency, but I would have baked everytime I stopped moving (which is often, in traffic here). I had a plan to use the flat plastic cylinder sections of 2-liter soda bottles (which I had collected more than enough of at one time, to try it out), but realized after some experiments with just the bottles sitting in the sun that I would never be able to ride inside that, without an active cooling solution that would require a misting system in the "cabin" at intake vents, and exhaust fans sucking air out in whatever place would force this cooled air past me from head to toe. Would also require a "closed bottom" to prevent the 150F+ air from the road surface from wafting up into the "cabin" while sitting there among all the cars at traffic controls.
tymotors
10 mW
Hi all,
Many things have happened with the trike. First and foremost, it has hydraulic disc brakes now. It stops much better than I expected it would without a brake booster. Adding 2 calipers running off a master cylinder designed for one caliper really gave them some leverage. Combined with regen in the rear, the brakes are in a great spot.
Secondly, the rear motor and controller have been upgraded. I have a CL1000 driving a 2 turn QS 273 mounted in a 16 inch rim (very fun to lace). Power is not an issue seeing as it happily will go 60mph+ up a hill until I run out of road. I still haven't felt the need to turn up the controller past 450 phase amps, but I have 1000 on tap, and probably about 700 that I could reasonably push through the motor, so when I'm feeling lucky I might push it a bit more. It also gets around 65 Wh/mi when driving between 30-45mph which isn't too bad for very hilly terrain. I'd be happy if it got 50 with a shell on the highway, and this is seeming feasible considering what it is getting now.
The frame has also received some stiffening after the first few drives made the need apparent. With those added members, the driving dynamics are acceptable for now, save for the rear tire not being quite stiff enough for the side loads. Looks like I need to redo the rear wheel yet again with a wider rim and stiffer tire. It still corners acceptably well, and won't tip over when leaning sideways on a fairly steep incline due to the batteries keeping the CG nice and low.
I'm happy that this thing finally is no longer vaporware, it's a working vehicle in the real world. The only things it needs to legally take to the streets are some lights, fenders, mirrors, and a dedicated speedometer. I still have to trailer it to a dmv at some point to convince a state trooper that it's roadworthy, but we'll cross that bridge when we get to it. Hopefully this has not been all in vain
.
View attachment IMG_0031.jpeg
Many things have happened with the trike. First and foremost, it has hydraulic disc brakes now. It stops much better than I expected it would without a brake booster. Adding 2 calipers running off a master cylinder designed for one caliper really gave them some leverage. Combined with regen in the rear, the brakes are in a great spot.
Secondly, the rear motor and controller have been upgraded. I have a CL1000 driving a 2 turn QS 273 mounted in a 16 inch rim (very fun to lace). Power is not an issue seeing as it happily will go 60mph+ up a hill until I run out of road. I still haven't felt the need to turn up the controller past 450 phase amps, but I have 1000 on tap, and probably about 700 that I could reasonably push through the motor, so when I'm feeling lucky I might push it a bit more. It also gets around 65 Wh/mi when driving between 30-45mph which isn't too bad for very hilly terrain. I'd be happy if it got 50 with a shell on the highway, and this is seeming feasible considering what it is getting now.
The frame has also received some stiffening after the first few drives made the need apparent. With those added members, the driving dynamics are acceptable for now, save for the rear tire not being quite stiff enough for the side loads. Looks like I need to redo the rear wheel yet again with a wider rim and stiffer tire. It still corners acceptably well, and won't tip over when leaning sideways on a fairly steep incline due to the batteries keeping the CG nice and low.
I'm happy that this thing finally is no longer vaporware, it's a working vehicle in the real world. The only things it needs to legally take to the streets are some lights, fenders, mirrors, and a dedicated speedometer. I still have to trailer it to a dmv at some point to convince a state trooper that it's roadworthy, but we'll cross that bridge when we get to it. Hopefully this has not been all in vain
.View attachment IMG_0031.jpeg
The Toecutter
100 kW
- Joined
- Feb 8, 2015
- Messages
- 1,478
If you design that shell right, you'll do 70 mph on under 3 kW, at least on flat ground over long distances. My KMX takes 10 kW to do the same with no shell, and it weighs significantly less.
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