Torque Calc: 300 FTLBS@400rpm, 36/18 Gear Ratio

AI Thread Summary
To calculate the torque after gear reduction, a motor with 300 FTLBS of torque at 400 rpm and a gear ratio of 36/18 results in a driven gear rpm of 800, which halves the torque to 150 FTLBS. The discussion also highlights a project involving a 16 hp gas engine powering a pump and hydraulic motor for an urban car, aiming for a top speed of 50 mph without accumulators. Key figures include an engine RPM of 2000, rolling resistance of 0.127 per tire, and an acceleration time of about 20 seconds to reach 50 mph. The user seeks assistance with complex calculations related to drawbar and incline grades due to a lack of math background. The project reflects a desire to innovate in urban vehicle design while addressing efficiency challenges.
H012
Messages
153
Reaction score
7
If I have a motor with 300 FTLBS. of torque at 400 rpm with a 36 tooth gear and the driven gear is 18 teeth what is my torque. Thanks' Ray M.
 
Engineering news on Phys.org
I guess your driven gear would have a rpm of 800 rpm since the no. of teeth are half. So now your rpm is doubled and to keep the transferred power constant the torque would become half of 300 i.e. 150 ftlbs.
 
What is your attempted solution to the problem?
You're welcome.
 
I have been trying to design a hydostatic set up using a 16 hp gas engine to power a pump and hydraulic motor for a 1200 pound
urban car top speed of 50 mph effiecently. using a variable displacement pump and fixed motor. no accumalators. I've Got a few figures like engine RPM 2000 Rolling resistance per tire is .127 and speed 0-50mph in about 20 secs [I think] Max grade of incline 15%. But I don't have the Math background to do the more complex calculations such as drawbar, or grade of incline ect...I just don't want to come acroos as a cracked for wanting to do this project.
 

Thread 'HP Required to move a robot 10meters at 1.5m/sec'

I need some assistance with calculating hp requirements for moving a load. - The 4000lb load is resting on ball bearing rails so friction is effectively zero and will be covered by my added power contingencies. Load: 4000lbs Distance to travel: 10 meters. Time to Travel: 7.5 seconds Need to accelerate the load from a stop to a nominal speed then decelerate coming to a stop. My power delivery method will be a gearmotor driving a gear rack. - I suspect the pinion gear to be about 3-4in in...
View full post »

Thread 'Bubble formation in 4 mm gap vessel'

How did you find PF?: Via Google search Hi, I have a vessel I 3D printed to investigate single bubble rise. The vessel has a 4 mm gap separated by acrylic panels. This is essentially my viewing chamber where I can record the bubble motion. The vessel is open to atmosphere. The bubble generation mechanism is composed of a syringe pump and glass capillary tube (Internal Diameter of 0.45 mm). I connect a 1/4” air line hose from the syringe to the capillary The bubble is formed at the tip...
View full post »
Thread 'Calculate minimum RPM to self-balance a CMG on two legs'

Thread 'Calculate minimum RPM to self-balance a CMG on two legs'

Here is a photo of a rough drawing of my apparatus that I have built many times and works. I would like to have a formula to give me the RPM necessary for the gyroscope to balance itself on the two legs (screws). I asked Claude to give me a formula and it gave me the following: Let me calculate the required RPM foreffective stabilization. I'll use the principles of gyroscopicprecession and the moment of inertia. First, let's calculate the keyparameters: 1. Moment of inertia of...
View full post »

Similar threads

How can I design a gear train to meet specific torque and RPM requirements?
Replies
2
Views
2K
How do I calculate wheel radius using below data?
Replies
1
Views
1K
Generator start-up torque
Replies
2
Views
2K
How to select a stepper motor and gear ratio?
Replies
2
Views
4K
Understanding torque -- impact guns and high torque drills
Replies
9
Views
3K
Why is the gear ratio reversed in a planetary gear system?
Replies
9
Views
3K
A novel compound epicyclic gear system I can't seem to understand
Replies
1
Views
1K
Automotive Poor Man's Hydrostatic drive: power steering pump as motor?
Replies
19
Views
3K
I calculating maximum gradient climbing ability of my car
Replies
23
Views
9K
Gears create more torque? Prove it
Replies
14
Views
5K

Hot Threads

Recent Insights

Back
Top