UTV Portal Geometry (Shock Therapy LIVE 4/13/21)
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- Опубликовано: 21 окт 2024
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Great video! Awesome info!! Thank you
Drive line will actually see less force with portals . Suspension will see massive increase in force
the gear ratio reduction from portal will reduce the torque being carried by axle shaft and diff.
therefore, with portals, axle shaft and diff are actually LESS likely to break.
Your correct. But consider the load the obstacle puts on the driveline durring deceleration or when a tire is spinning but stops suddenly. It’s force is higher on the axle and diff. Consider one more thing, most portal utvs run low gear which is more load on the driveline accelerating and more load decelerating due to engine braking. Last, consider that in real world use, portal utvs break more axles and diffs than any other utv.
@@ShockTherapyllc Thank you very much for the comments. I don't own an UTV, and I 100% respect the experience you guys have in this field.
I have my Jeep on portal axles for over 2 years now. I agree that portal puts more stress on suspension components. But I just can't think of why would wheel end reduction ratio break more diffs, or drivetrain components in general. Cause what portal does is basically reduce the torque on drivetrains by letting them spin little faster. And usualy, its the torque that break things.
maybe due to over reving the UTV drivetrain ??
Anyways, thank you for your reply :)
Make no mistake it reduces stress on the drivetrain components period. That’s everything that rotates or spins before the portal. Axles, differentials, transmission, driveshaft, u-joints.
How ever it increases stress on everything else. Suspension components ball joints, a arms, frame tabs, tie rods, steering gear, etc. ( upper ball joint and control arm are debatable depending on portal size it may reduce longitudinal stress )
A gear is a rotating lever. Think pry bar and fulcrum. Take LESS force to move an object. Gear ratio is distance between you and the fulcrum vs the fulcrum and the object. Basic laws of physics.
.LOL. Oh boy. No, they dont break more shafts after getting portals. They break more shafts when they get giant tractor tires with 8" cleats. Without the portals they would break the shafts loading on the trailer.
They have 15,30,45, and 60 percent reduction in portals. That’s a lot of reduction
Your whole video is WRONG. LOL. Portals take the stress off of the rotating assembly. It is all of the other modifications that cause more force. You arent putting the blame on the proper thing.
I just ordered a set of 30% 4" portals for my Mule Pro. I upgraded my tire size from 26" to 30" , installed a API clutch kit, 1.5 forward/back high clearance A arms, and upgraded the ball joints. The Mule handles the new tire size okay, but from time to time I have belt squeal when under some moderate loads and ground clearance issues where I ride. The Mule out the box is no speed demon so I will loose a little more top end, but will gain back the grunt on the bottom and save my belt along with taking the extra load off the axles and diffs . I thought I basically have everything covered, but never thought about the ball joint to center of tire scrub / extra load on the steering. A know a lot of guys install spacers or negative offset wheels which I assume will have somewhat the same effect just not as severe. Hopefully my steering rack will handle it.
Great stuff! I really appreciate you guys doing these videos.
30” tires are small for portals..
Hey Justin should I get a 64” or a 72” x3 for a portal build?
72
Gotta love the Mud Gnats at the Mud Nats
Ill say if you're running smaller 33-35 with portal stock shafts are fine. Also i run a wheel thats offset sucks my wheel in closer. So my scrub is about 2.8 inches.
Chases' voice makes me warm and fuzzy inside
Yanmar tractors have had that since the late 60’s!
A tip : you can watch series at Flixzone. Me and my gf have been using them for watching loads of movies recently.
@Emerson Fox yup, been using Flixzone for since december myself :)
🏆🏆🏆👍🇺🇲🙏
Thank you for sharing.
Anyone make a bolt on orbital gear reduction if you wanna crawl with big tires?(No lift)
Blown Budget Off Road on RUclips tried portals on a Yxz, didn't work, feedback in the wheel was terrible. Went back to stock.
Is it possible to adjust anti-squat in a trailing arm design like X3?
Not without frame mount fabrication. Otherwise your only options are to move a lot of weight forward or rearward, change spring rates or add or remove free bleed in side the shock.
@@ShockTherapyllc Thanks for the info! Wish the oem would give us optional mounting points and adjustment like an RC car. Damn you liability lawyers!
If you're reading the comments debating on buying portals please watch a different video..!!! Especially if you're a mud Rider.... this video is ridiculous