double front truck

[Mikel echegaray]

Hello!

what is the diference bettween 1 truck or 2 trucks in the front? and how do you put it?

how many milimetres higher must be the 2º truck?


and other thing... where do you put the second truck? between you and the main truck? or you put the main truck between you and the 2º truck?


thanks!!

[krylon_ninja]

Part of this issue is an obvious one. Two trucks adds two wheels and so doubles your traction; especially important in a hard turn. You are less likely to slip the turn.

Double trucks also halves the load on the bearings as now 8 bearings take the load that the previous 4 were.

Depending upon your wheel durometer(although applies in any case) you will also be faster as the wheel(being at 50% of previous load)will roll faster due to less weight warping. The faster you go the less wheel 'flattening' occurs but how much affect this actually has is??? The rounder a wheel stays, the faster it rolls. 'Rolling' is a response(to gravity on an incline)and the less factors that come as interference(wheel warpage...bearing friction etc)the better it can respond to the primary input to just 'roll'. I'm sure there is a math equation for it.

placement: depends on what wheelbase you are trying to stick with...and how you are already sitting on the board(or laying if it is on a luge). My luge (self built)did not come with a rail filled with pre-drills I could choose from so I figured it out ahead of time. If you are dealing with a board that already had the one truck hole set you will have to choose to go in front or in back of the truck you already have. OR you can back the current truck back(or forward) ONE set of holes and drill out new ones, if you want a more minor shift adjustment, than having the new truck exactly in back(or front) of the current truck which is what you would be getiing if you left the current truck using the same four holes it now uses. in other words: you can shift your current truck ahead FOUR holes distance...or TWO holes distance. You can shift the trucK HALF a truck space fwd(or back)or a FULL truck space fwd or back. Either way you will still be drilling 4 new holes...just in different places.

If you have the current truck riding a little further back than it needs to be according to where you sit/lay(?)put the second in front of that. If the current truck is a bit farther forward than you like...put the new truck in back of it. it is all about weight distribution and what you want. You will have to play with it a bit probably no matter which you choose.

I built two luges(pegged and a pegless)and I mounted the trucks with the base plate pivot cup housing of the one truck nearly butting to the rear of the other truck's baseplate. This leaves plenty of space for up to an 83mm wheel. I used the same truck spacing on the pegless and there is a bit more room between wheels as i run 77mm on that one. Remember to adjust the trucks bushings the SAME.

Also: Because the trucks are NOT turning on exactly the same plane it would be theoretically possible for the inside wheels to rub eachother(in a tight turn) but ONLY if you were running a really tall wheel so that there was no more than 1/8" of space between them when board is resting. The same way that your inner front wheels are closer to your inner(on a turn)back wheels(regarding any skateboard), the same is true between two front trucks although much less as they are taking very much the same arc in a turn BUT NOT EXACTLY. You are not likely to use wheels that big...but it is just an example to show that it is important to have the those trucks as close together as possible.

Others know more than me...just what occurs to me

[will]

Basically:

-grips more.

-looks cool!

AND get to look like Lady Penelope!

[ChrisMcB]

Hello!

what is the diference bettween 1 truck or 2 trucks in the front? and how do you put it?

how many milimetres higher must be the 2º truck?
and other thing... where do you put the second truck? between you and the main truck? or you put the main truck between you and the 2º truck?
thanks!!

The basic rule of thumb is you want roughly 2/3 (closer to 60/40) of your weight on the front trucks. This is true whether you have one truck up front, or two.
Some people raise one of the trucks so it only contacts the ground in a turn. This is too much trouble in my opinion. Some people raise one of the trucks because their board has flex in it. If your board flexes, you'll have to figure this out yourself.

The theory is two trucks give you more traction (although it isn't necessarily twice as much traction) I personally think it helps counteract wobbles a bit as you have more urethane in in your bushings. That is one thing to keep in mind, you may want to run your front trucks looser than you normally would.

I've never looked at it as "main" and "2nd" truck. Its just two trucks up front, one is the front truck, and one is the middle truck. Make sure they are aligned.

[Mikel echegaray]

chris,you are saying that if you have a luge with 0 of flex you put the front truck and the middle truck in the same height and with the same kimping angle?

thanks!

[Big Steve]

Just got home from a Family Reunion which followed MFOS.

Hey Krylon what happened to you?

Double trucks = double fun (espeically when one is mounted backward, or one isn't contacting the ground).

I've seen two primary ways to set up double trucks: Both sharing the load evenly or with truck 2 (closest to butt) very slightly unloaded.
Christian's personal preference is shared loading.

[Street-Luge.com]

Double trucks = double fun (espeically when one is mounted backward, or one isn't contacting the ground).

Haha oh man. There has to be a story behind that one!

[Dave P.]

Buy what I've been led to believe.
Is that two trucks give you more traction in the corners.The perpos of puting a 1/8th riser under the front truck is to hold the midle truck off the ground in the streightaway to reduce bearing resistance or drag from having six wheel's making contact with the ground and when making a turn the G force will flex the sled,bringing the midle wheels down to the ground to give more traction in a corner and also shortening the wheel base to turn sharper. the trick is figuring out the amount of flex to be able to keep all four front wheel's making contact with the pavement in a corner and you need to have ten to fifteen degreas les angle on your rear truck's as your front truck's. the front truck's steer the rear truck's follow. you want less steering on the rear's than the front's. I know this because the first time I tried sixty degreas front and back, every corner I was getting thrown around backward.whab's are almost alway's caused by bushing's being too loose or too soft for the weight of the pilot. rarely but sometimes missaleighned truck's or a twist in the sled or a defective bushing or even a bent axle.The tuning of a sled is an artistick fine art that only even the prose aquired by experience threw practice, practice, practice, and they dont give up there secret's easily.I'm far from a pro, but I've had the great opertunity to ride with a few of the best and the honor to have met and spoken with a few more.They are a realy great group of guy's that will help you if they see you realy need it.So the best way to learn is to try to get as many opertunities as possible to ride with experienced rider's and listen.

[Big Steve]

Set it up with equal loading on the trucks then practice and practice then set it up with truck 2 unloaded and practice practice. It doesn't matter what others like, you're the only one that has a say in the way your luge handles. If you like it run with it.

Don't forget to factor in preload/flex into both setups. Enjoy.

[Big Steve]

Double trucks = double fun (espeically when one is mounted backward, or one isn't contacting the ground).

Haha oh man. There has to be a story behind that one!

One luger found out on day 2 or 3 that he set his luge up with truck 2 (closest to butt) mounted backwards. He'd lean and the wheels would rub.
Oddly his time wasn't bad with it set up this way, nor did he "feel" it when riding. It was found when he was tuning/tweaking his luge. Even he laughed about it.

[Mikel echegaray]

so,teorically if you have 2 trucks in front you go faster than with 1 truck no? the wheels are less loaded...no?

[Big Steve]

In theory, no double trucks are not faster. If set up properly they provide more grip and traction in corners which allows you to corner at a higher rate of speed without sliding.

Look for photos from Maryhill Festival of Speed and pay attention to the luge setups. I don't think you'll find a 2 axle street luge at the event. Everyone was running 2 axles up front.

[Mikel echegaray]

and i supose that double front truck will give you more stability,no?