Recent content by neil h

That's the logic I called up with. I don't really understand why he wanted the Nm force. He asked for the speed in radions and the max Nm applied. Anyhow I have to call him back now so I'll see how I did I guess.

When the guy was trying to help me out on the phone, which was good of him, I've learned over the last year or so that industrial suppliers do not have much time for folk calling in without the correct specifications and drawings. Anyhow he started asking questions and he did ask me the radius...

But I'm not so confident on how to get from the meters per second acceleration and the weight of the cart to the Nm torque on the axle where it would be fitted.

The dashpots are rated by the viscosity of the filling and I need a rough idea of the range of Nm force applied to the pot and radians per second to continue the discussion with the supplier about which dashpot to order, according to my maths it's the lightest viscosity one they make, if my...

This is a continual rotary damper dashpot attached to the axle by a timing belt or gears, the effect of the damping will be continual drag during motion. It dose not limit speed, though it would depending on the setting and it is not used as a break, it's just to apply a very small amount of...

There is no push bar, I've described it as a cart being pushed to give a simplified idea of the maths I'm trying to do, trying to get the torque value off the two axles if it's loaded with 50 Kg and pushed by a person to the values I specified. It's not actually a cart, it's a part mounted...

I see, sorry I should of been clearer. It's just a normal cart on a horizontal plane with 4 wheel, two axles and someone pushing it. There are no springs or anything like that just two fixed axles rolling in sets of bearings.

The value for acceleration comes form the expected accelerations of the cart.

Just a comment on if any part of it looks sound or not would really help.

Yep, that's in the first post. Dose it sound like I'm doing the Nm calculations right? I've used Mass x Acceleration to get a maximum and average Newton value. Then I divided the total in half to calculate for each axle and multiplied N by the radius of the wheels to get the Nm. Lastly I divided...

I appreciate your interest in the design of the whole assembly and how it would work but it's a bit much to go into in detail here, don't take me as rude i know your looking to help but I have to call back and sort out ordering one of these things first thing tomorrow and the design is a whole...

Ok, deep breath, this is what I did, tell me if I'm mad. Using 50 Kg's on the cart as the load I have 16.5 N as a max and 3.65 N at a more normal speed. So to calculate the torque in Nm on the axle I first split the force in half for my max and min as there is two axles supporting the weight...

All the examples of calculating Nm I can find use the distance from the fulcrum x force. Newtons x meters = Nm, but how do I get from someone pushing this cart to the torque on the axle?

No not a speed limiter it's just to be used to smooth out the motion as it's hand pushed, it's a variable continual rotary damper with a x10 adjustment on the damping force so the question is which viscosity of fluid to have in the pot, I need to get it in the right ball park then it'll be a...

Well I'm presuming they are asking as the rotary damper would be attached to the axle by gears or a belt