Rear Truck Speed Wobbles

Hey guys. Have an issue with the rear truck creating some nasty odd speed wobbles. They even come on at lower speeds of 12-15mph.

The rear truck sits underneath an angled riser. Single pin TB218 truck. It is mounted below the deck.

The front is a standard evolve dkp gtr truck flush mounted with the top.

Pics may help.






how angled is the riser? tucked in or pushed out? also, have you tried cranking down on the king pin?

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Yes, how angled is the riser. Also do you have a photo?

Without an angled riser, this is generally a pretty stable setup.

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I wish I knew the angle, maybe trig could do it, but I’d say its about 7deg, its 1mmx10mmx75mm

Yes and the setup is as per this diagram

I have not tried cranking the kingpin down as tight as poss, I can do that, will test and come back. Thank you.

Bushes are standard evolve ones from the gen2 carbon made in 2013/2014.

Learn to fall better. You got this. Don’t fight gravity.

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Are you sure the thick part of the riser is on the same end as the pivot cup, which is the back end side? Not on the kingpin side

I didn’t do the trigonometry but just eyeballing, that looks like about ten degrees, ish.

Yes indeed it is. The thick side is at the pivot cup end. I have the pivot cup at the rear (I hope I have these around the right way…)

(Hard to get a camera angle on it)

Are the front wheels on the left or right side in that image?

In the OP. The board is upside down and it is the left side.

Just tightened the bejesus out of it. Can hardly turn, but yes it seems to have fixed the speed wobbles. Is there a better way? Heh

You shouldn’t need to do that.

Are you steering with your front foot and only using your back foot to keep the back of the board on the ground?

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Sometimes both. Back foot for turn in, front foot for turn out. But sometimes plant back foot heel in the middle and use front foot for turning both ways. Never had this problem on the standars evolve gtr riding either stance.

I have a board with Evolve DKP (stock orange bushings) on the front and PNL 40° rear baseplate with TB218 hanger…

…and it’s one of the most stable setups I have for high speeds.

So, I’m confused. Following thread…

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It’s really hard to tell, but what bushings are you using in the back? Either the TB truck seats are really deep, or the camera angle is playing tricks on me. Are they standard RKP longboard bushings, or DKP/traditional bushings?

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I have the tb218 hangar. But it just bolts straight underneath the board. I got a mate to fabricate a mounting plate for the top. Its a piece of steel cut to fit the hole on the gen2 board where the evolve truck would usually sit flush. Not sure what a PNL 40deg baseplate is. I like the sound of it. Will google. Or do you have a pic?

They are just the standard orange evolve bush set you get from evolve for the gen2 cabon series boards in 2014. So yes DKP original orange ones. The same from the existing setup, which had DKP rear, but I just used part of it for the single king pin setup that came with the tb218 truck baseplate and hangar.