Skag having angled attachment studs
View Patent ↗A skag having a rod/elongated rod and rearwardly-angled threaded studs upwardly-extending immovably from the rod. The skag adapted to be connected to the bottom of a snowmobile ski to enhance the steering capabilities the snowmobile ski. The studs being angled with respect to a longitudinal axis of the skag in a direction opposite to that of the forward travel direction of the skag to decrease the shear stress on the weld fixing the stud to the rod and providing a security against installing the skags in the wrong orientation on the bottom of the ski.
1. A skag for use on an underside of a ski for a snowmobile, the skag comprising:
a rod of material having a front and rear defined consistently with a forward direction of travel of the skag when the skag is secured to the ski and the ski is connected to the snowmobile, the rod of material having a front end, a rear end and a flat middle therebetween, the front end and the rear end being bent upward with respect to the middle;
a first stud immovably attached to the middle of the rod of material at a first distance from the front end and extending away from the rod of material at a first angle opening away from the front of the rod of material, the first angle being between 45° and 75° inclusive, the first stud having threads for securing the skag to the ski; and
a second stud immovably attached to the middle of the rod of material at a second distance from the rear end and extending away from the rod of material, spaced-apart from the first stud, at a second angle opening away from the front of the rod of material, the second angle being between 45° and 75° inclusive, the second stud having threads for securing the skag to the ski,
the second distance being greater than the first distance.
2. The skag of claim 1 , wherein the first stud, the second stud and the rod of material are integrally formed.
3. The skag of claim 1 , wherein the first stud and the second stud are affixed to the rod of material by welding and each of the studs is chamfered where welded to the rod of material such that a contact between each stud and the rod of material forms an ellipse when viewed from above.
4. The skag of claim 1 , wherein:
the material is metal;
the first stud and the second stud are both welded to the rod; and
it is an exterior surface of each of the studs that is threaded and adapted to receive a complementary nut.
5. The skag of claim 4 in combination with a snowmobile ski, the snowmobile ski having:
an elongated base having a topside and an underside; and
a keel extending away from the underside of the base,
the skag being secured to the ski on the underside of the base at the keel, with the studs of the skag extending through holes in the ski to the topside thereof,
wherein the skag is secured to the ski via a first nut in threaded engagement with the first stud and a second nut in threaded engagement with the second stud.
6. A skag for use on an underside of a ski for a snowmobile, the skag comprising:
a rod of material having a front and rear defined consistently with a forward direction of travel of the skag when the skag is secured to the ski and the ski is connected to the snowmobile;
a first stud having a first stud axis, the first stud immovably extending away from the rod of material such that when the skag is secured to the ski and the ski is connected to the snowmobile and the snowmobile is steered straight on horizontal level ground a first angle opening towards the rear of the rod of material formed between a projection of the first stud axis and the ground is between 45° and 75° inclusive;
a second stud having a second stud axis, second stud immovably extending away from the rod of material such that when the skag is secured to the ski and the ski is connected to the snowmobile and the snowmobile is steered straight on horizontal level ground a second angle opening towards the rear of the rod of material formed between a projection of the second stud axis and the ground is between 45° and 75° inclusive, the second stud being spaced-apart from the first stud; and
a line being defined on the ground by a point of intersection of the projection of first stud axis and the ground and a point of intersection of the second stud axis and the ground, and the first angle is formed between the projection of the first stud axis and the line and the second angle is formed between the projection of the second stud axis and the line.
7. The skag of claim 6 , wherein the first stud, the second stud and the rod of material are integrally formed.
8. The skag of claim 6 , wherein the first stud and the second stud are affixed to the rod of material by welding and each of the studs is chamfered where welded to the rod of material such that a contact between each stud and the rod of material forms an ellipse when viewed from above.
9. The skag of claim 6 , wherein the rod of material has a front end and a rear end and the studs extend away from the rod of material at the ends thereof.
10. The skag of claim 6 , wherein the rod of material has a front end, a rear end and a middle therebetween, and the studs extend away from the rod of material from the middle.
11. The skag of claim 6 in combination with a snowmobile ski, the snowmobile ski having:
an elongated base having a topside and an underside; and
a keel extending away from the underside of the base,
the skag being secured to the ski on the underside of the base at the keel, wherein
the material is metal;
the first stud and the second stud are both welded to the rod; and
it is an exterior surface of each of the studs that is threaded and adapted to receive a complementary nut,
wherein the studs of the skag extend through holes in the ski to the topside thereof, and
wherein the skag is secured to the ski via a first nut in threaded engagement with the first stud and a second nut in threaded engagement with the second stud.
12. A skag for use on an underside of a complementary ski for a snowmobile, the skag comprising:
a rod of material having a front and rear defined consistently with a forward direction of travel of the skag when the skag is secured to the ski and the ski is connected to the snowmobile, the rod of material having a longitudinal axis;
a first stud having a first stud axis, the first stud immovably extending away from the rod of material such that a first angle measured between the first stud axis and the longitudinal axis of the rod of material, opening towards the rear of the rod of material, is between 45° and 75° inclusive; and
a second stud having a second stud axis, the second stud immovably extending away from the rod of material such that a second angle measured between the second stud axis and the longitudinal axis of the rod of material, opening towards the rear of the rod of material, is between 45° and 75° inclusive.
13. The skag of claim 12 , wherein the first stud, the second stud and the rod of material are integrally formed.
14. The skag of claim 12 , wherein the first stud and the second stud are affixed to the rod of material by welding and each of the studs is chamfered where welded to the rod of material such that a contact between each stud and the rod of material forms an ellipse when viewed from above.
15. The skag of claim 12 , wherein the rod of material has a front end and a rear end and the studs extend away from the rod of material at the ends thereof.
16. The skag of claim 12 , wherein the rod of material has a front end, a rear end and a middle therebetween, and the studs extend away from the rod of material from the middle.
17. The skag of claim 12 in combination with a snowmobile ski, the snowmobile ski having:
an elongated base having a topside and an underside; and
a keel extending away from the underside of the base,
the skag being secured to the ski on the underside of the base at the keel, wherein
the material is metal;
the first stud and the second stud are both welded to the rod; and
it is an exterior surface of each of the studs that is threaded and adapted to receive a complementary nut; and
wherein the studs of the skag extend through holes in the ski to the topside thereof, and
wherein the skag is secured to the ski via a first nut in threaded engagement with the first stud and a second nut in threaded engagement with the second stud.