Recent content by Electro Dave

However if I do add a safety overload coupling that slips when preset torque is reached, a bit like a fishing reel drag, people won't put the hurt on the gearbox too much, granted I set the preload torque to be equal to the nominal torque rating of the gearbox output for a given rpm. The gearbox...

I'll need the gearbox to endure such abuse quite often actually.

I do understand that concept. I should have said the torque that would be expected to make the whole thing move and then at which rate should I expect the bike to accelerate and the top speed I can expect to reach with a given max rpm and then how much continuous torque the gearbox will have to...

Hmmh, how could I phrase it in a more obvious way... I want to know if this gearbox will be strong enough to last many years of party bike duty. It will be positioned on one side of the vehicle, collecting up to 6 riders on the cross shaft and transmitting to another central gearbox, as shown...

We're not going to go anywhere at this pace.

You're right, as these calculations do include a worst case scenario margin, as I already know what size of gearbox and shafting I need to be able to successfully move the bike. However, real world use show that it won't make it for even one mile before complete destruction of drivetrain. It's a...

Please, try to avoid the obvious and focus on the matter. As a cyclist, I know very well how much air resistance play into the equation and also that you can't move an object on Earth without a force strong enough to overcome rolling resistance. I can push the vehicle by hand fast easier than I...

English isn't my first language, so I might not use the proper terms at time. I understand there would be a slight movement as soon as a force is applied, granted this movement could be considered non-existant when talking about the wheels starting to move the vehicle from it's initial position...

Hi, I'm trying to figure out the minimum power in watts or HP to move a front wheel drive vehicle that is man-powered with pedals, of a given base weight and then to know how much people would be needed to pedal in order to break inertia and a constant of how much more power is needed for each...

In serie configuration, you know that current is same and tension is spread out accordingly to resistance of each components and vice-versa for parallel connections. Which gives us It = I1 = I2 I will share with you my method to easily solve all equation problems. I simply write down all the...

Good point about the overload or shear gear, I was actually looking up these products today. I was a few company that makes overload safety couplings such as the Dalton Gear "ROSDC" Rigid Overload Safety Device Coupling, and I was thinking of installing this kind of coupling on the input of the...

Hi, I'm trying to figure out the minimum specs of each components of the new party bike I'll be building to make sure nothing fails prematurely, but I also don't want to over do it because of cost and weight. This is our current bike, for reference. We will use a similar design as a starting...

Hi, I'm looking for some helpful knowledge and help with a new project. Found this forum while googling along for energy and power formulas, read a bit and saw some great contributions, so I signed up. Be ready, I'm going to give your brains some workout over the next months :)A bit about me ...