@Criggie nah, it's just the semi-random "pay attention" prompt for questions with no answers, or low-voted answers. In the case the OP is, IMO, unlikely to return. I'm actually inclined to close as off topic coz they want to turn it into a motor vehicle.
or possibly the user changed their name or some similar hiccup.
i think your answer is optimistic, I reckon the manufacturer said "not safely, unless you're willing to completely redesign and rebuild the vehicle to be much stronger". I think iIt's designed to be ridden slowly on flat roads in a controlled environment, and that's their "pushing the limits of this design" model. They don't have much room left to play games
I expect that once you started chopping into it to do something, you'd end up in an "every change means we need three more changes" until you ended up with a completely new space-frame chassis, suspension, gearbox, seats, etc etc.
Legality isn't really an issue, outside of the approximately one US state where the motor he wants would be allowed, no-one is going to permit it. Plus the cops will pull it over on sight just because it's so clearly a joke.
@Criggie I assume they already said no. It's clearly a silly project, it's way outside what that design is capable of and they will have told him that. He's not good at listening, though, as you can tell from his "someone suggested you rcompany, please email me a quote" line.
I could comem up with a design, people like Ben@Trisled could probably bang out a perfectly legal vehcile that does 90% of what that guy wants, but it would cost a lot more than he's willing to pay.
The easy way would be starting with a small truck chassis and working backwards to add pedals while making it legal to carry that many passengers. Much easier to meet the rules that way, and you could whack a 10kWh battery and 2kW motor in while you were at t.
@Criggie normally they're much harder to clip out of, and most you can't clip in at all if they're dirty. The potential to spend a lot of time polishing the cleats on the side of a track is high, I reckon.
shoes... I have my old pair of SPD shoes, and my new pair. My toes poke out of the old ones, but some days that's still better than putting on cold, wet "good" shoes.
yep. Imagine rolling down a gentle hill towards a stop sign. Now think about shitty drum brakes on only the rear wheels.
I've ridden the tandem trike with someone sitting on the rear rack and four people on the trailer. I noticed the extra braking distance, even with the stoker braking the rear wheel. Front brakes were almost useless because with half my weight on each wheel being pushed along by the other 6 people locking up the wheels was easy. Getting the vehicle to actually stop... not so much.
I reckon that whole think is knocked up out of mild steel and it's all easily bent thin wall tubing. It's a promenade bike, designed for pedalling round a retirement community or fairground. At walking speed. I reckon hitting a pothole at 30kph would rip the front wheel off, it's just not designed for that sort of crazy speed. Still, the OP wants 25 miles in 7 hours, which is more or less walking speed. So that part is fine.
yep - my story was about a load of concrete rubble in the rear of said-landy.... it drove okay and accelerated fine (yay for 3.3 Litre 202 engine ) until we got to the end of the road. Braking was crap (drums) but worse, turning the wheel produced no turn. All the weight on and behind the rear axle had unweighted the front, to the point the front wheels slid sideways.
yeah - it'd be a nice idea if the budget were available. But I doubt he's got the funds to do it right.
It's just 1000W for 7 hours... using 7AH SLA batteries you get about 70Wh per 2.5kg battery. 100 of those is 250kg, assuming you're willing to run them utterly into the ground. So you could triple the budget and use 200kg of lithium batteries instead... it's still not going to be registerable as a motor vehicle without 200kg of safety equipment, and 500kg of completely reworking the whole chassis to take the extra weight.