Here is the info on my board... (Note, l do know l put this under the surfing category, but there is no damn list for skateboards and longboarding is said to be surfing on land)

Natural Longboard Complete (9'' x 47.75'')
Havoc Longboard Trucks 6.0
Reds Speed Bearings
76mm 75a Sector 9 Nineball Wheels
Shorty is 2'' Phillips Hardware
Black 5/8 Riser Pads
Black Diamond Grip Tape

l love using it for cruising, but my main reason was for bombing hills... I've bombed over many hills, but one hill got to me after l put on those new wheels and ate shit and at first l did not mind the speed wobble, but now l can not deal with itanymore cause l tried it again and l crashed that same hill after l got the speed wobbles... It just get is to my head now and l wanna just kill that hill for once and dominate it...

What can l do to fix the speed wobble?

Preferably maybe a list of things l could do...

10 pts for best answer...

Hmm. It could be that the kingpin in your trucks are too loose. Thats the only thing l can think of because the tighter your trucks are the more stability you will have but you will have less ability to turn whereas if you had loose trucks you could turn better but have less speed.

Maybe your new wheels grip better causing your board to turn side to side more often due to the the loose trucks?

Two things to try. Tighten up your kingpin. If that does not work trade out your truck bushings for stiffer ones.

tighten your trucks. l had the same problem when bombing hills and when l tightened my trucks, l didnt have speed wobbles any more. the only bad thing is that when you arent going as fast, you cant really carve as well. so loosen them when you want to carve and tighten them when you want to bomb that huge hill

carve