Gears
- cheese
- Member
- Posts: 211
- Joined: April 8th, 2017, 7:59 pm
- Division: C
- Has thanked: 1 time
- Been thanked: 0
- Contact:
Gears
Just been looking around and have had a hard time finding gears. After doing some calculations, I need around a 4:1 - 7:1 gear reduction. Is it ideal to use metal gears or will plastic be fine? I've had a hard time finding any good metal ones.
2018 Nationals: 2nd Place Mystery Architecture || 6th Place Battery Buggy
Cheese's Userpage
Cheese's Userpage
- cheese
- Member
- Posts: 211
- Joined: April 8th, 2017, 7:59 pm
- Division: C
- Has thanked: 1 time
- Been thanked: 0
- Contact:
Re: Gears
There is another subtopic by retired called "build ideas" that explains it a little.holmonsterX wrote:Me and my school are new to this category, we were wondering how you get your calculations to get the correct gear size for the car and what material or brand is the most effective.
2018 Nationals: 2nd Place Mystery Architecture || 6th Place Battery Buggy
Cheese's Userpage
Cheese's Userpage
- cheese
- Member
- Posts: 211
- Joined: April 8th, 2017, 7:59 pm
- Division: C
- Has thanked: 1 time
- Been thanked: 0
- Contact:
Re: Gears
Ok, so metal will probably be the best. Does anyone know where to get metal gears then?
2018 Nationals: 2nd Place Mystery Architecture || 6th Place Battery Buggy
Cheese's Userpage
Cheese's Userpage
-
- Member
- Posts: 438
- Joined: October 9th, 2017, 6:25 pm
- Division: C
- State: NJ
- Has thanked: 1 time
- Been thanked: 0
Re: Gears
You can derive an optimal gear ratio with a torque curve for the motor you are planning to use(along with desired rpm to travel a certain distance)
In terms of where one can obtain metal gears: you can't really go wrong buying gears from any source. Just make sure that the gears u buy have the same pressure angle(I think that's what it is called) so they mesh, and they have the required bore diameter.
In terms of where one can obtain metal gears: you can't really go wrong buying gears from any source. Just make sure that the gears u buy have the same pressure angle(I think that's what it is called) so they mesh, and they have the required bore diameter.
- cheese
- Member
- Posts: 211
- Joined: April 8th, 2017, 7:59 pm
- Division: C
- Has thanked: 1 time
- Been thanked: 0
- Contact:
Re: Gears
Ok, thats what i thought. (its pitch angle btw)shrewdPanther46 wrote:You can derive an optimal gear ratio with a torque curve for the motor you are planning to use(along with desired rpm to travel a certain distance)
In terms of where one can obtain metal gears: you can't really go wrong buying gears from any source. Just make sure that the gears u buy have the same pressure angle(I think that's what it is called) so they mesh, and they have the required bore diameter.
2018 Nationals: 2nd Place Mystery Architecture || 6th Place Battery Buggy
Cheese's Userpage
Cheese's Userpage
-
- Member
- Posts: 438
- Joined: October 9th, 2017, 6:25 pm
- Division: C
- State: NJ
- Has thanked: 1 time
- Been thanked: 0
Re: Gears
I did some research, and found that the factor that must match for two gears to mesh is modulus, which is the same thing as the pitch diameter (I think factors that influence DP, or P is the two things mentioned above). Can someone please clarify for me?
- Unome
- Moderator
- Posts: 4338
- Joined: January 26th, 2014, 12:48 pm
- Division: Grad
- State: GA
- Has thanked: 235 times
- Been thanked: 85 times
Re: Gears
A gear's modulus is a measure of tooth size - typically a ratio between the diameter and the number of teeth. Two gears with the same modulus will mesh properly. It's not the same thing as pitch diameter, but it is usually computed using the pitch diameter (as opposed to major or minor diameter).shrewdPanther46 wrote:I did some research, and found that the factor that must match for two gears to mesh is modulus, which is the same thing as the pitch diameter (I think factors that influence DP, or P is the two things mentioned above). Can someone please clarify for me?
Who is online
Users browsing this forum: No registered users and 2 guests