Portal gear for model vehicles

1. A portal gear for a model vehicle comprising:

a drive shaft rotatively coupled to an input gear via a universal joint;

a first and second input bearing rotatively supporting the input gear;

an axle coupled to an output gear;

a housing configured to vertically contain the input gear and the output gear;

wherein the drive shaft transfers a rotational torque from an upper location to a lower location via the input gear rotating the output gear; and

wherein the universal joint is within one of the first or the second input bearings.

2. The portal gear according to claim 1 , further comprising:

a portal hex coupled to the output gear;

wherein the portal hex is configured to transfer the rotational torque to a model vehicle wheel.

3. The portal gear according to claim 1 , wherein the housing comprises an inner portal housing and an outer portal housing.

4. The portal gear according to claim 1 , wherein the portal gear comprises a steering arm connection.

5. The portal gear according to claim 1 , wherein the portal gear ratio is 2.56:1.

6. The portal gear according to claim 1 , wherein the portal gear ratio is in a range of 2.25:1 to 2.75:1.

7. The portal gear according to claim 1 , wherein the portal gear ratio is in a range of 2:1 to 3:1.

8. A portal gear for a model vehicle comprising:

a drive shaft rotatively coupled to an input gear via a universal joint;

a first and second input bearing rotatively supporting the input gear;

an axle coupled to an output gear via a pin connection;

a first and second output bearing rotatively supporting the axle;

a housing configured to vertically contain the input gear and the output gear;

wherein the drive shaft transfers a rotational torque from an upper location to a lower location via the input gear driving the output gear; and

wherein the universal joint is within one of the first or the second input bearings.

9. The portal gear according to claim 8 , further comprising:

a portal hex coupled to the output gear;

wherein the portal hex is configured to transfer the rotational torque to a model vehicle wheel.

10. The portal gear according to claim 8 , wherein the portal gear ratio is 2.56:1.

11. The portal gear according to claim 8 , wherein the portal gear ratio is in a range of 2.25:1 to 2.75:1.

12. The portal gear according to claim 8 , wherein the portal gear ratio is in a range of 2:1 to 3:1.

13. The portal gear according to claim 8 , wherein the portal axle is configured to be rotatively fixed to a model vehicle wheel.

14. A method for transferring torque via a model vehicle portal gear, comprising:

coupling a driveshaft to an input gear via a universal joint;

supporting the input gear with a first and a second input bearing;

coupling the model vehicle portal axle to an output gear;

engaging the input gear and the output gear;

driving the input gear with the drive shaft to provide torque to the model vehicle portal axle;

wherein the input gear is located substantially vertical relative to the output gear; and

wherein the universal joint is within one of the first or the second input bearings.

15. The method according to claim 14 , wherein a gear range between the input gear and the output gear is from 2.25:1 to 2.75:1.

16. The method according to claim 14 , wherein a gear range between the input gear and the output gear is from 2:1 to 3:1.

17. The method according to claim 14 , wherein the model vehicle portal axle is rotatively fixed to a portal hex.

18. The portal gear according to claim 1 , further comprising:

a first and a second output gear bearing rotatively supporting the axle.

19. The portal gear according to claim 1 , wherein the input gear has a smaller radius than the output gear.

20. The portal gear according to claim 8 , wherein the input gear has a smaller radius than the output gear.