'08 front end geometery versus '09

[2008FxNytro]

no problem. ill do it toniggt for ya. eating dinner then headin to the garage

 

[arteeex]

Connecting the legs of the a-arms with a cross member isn't going to make the structure any stronger. In fact, I would be concerned that doing so would limit the desirable effect of redistributing stress by flexing to a degree and become more prone to failure for this reason. In any case, the weak links will still be the where the a-arms attach to the frame.

 

[sheetwright]

Correct me if I'm wrong but isn't chrome moly stronger the the stock arms? It is lighter. Plus this kit is slightly wider. Which is three pluses.

 

[stopdropanroll]

Yes chrome-moly is stronger but with stronger a-arms comes a weaker subframe, somethings going to give.

 

[yukon yamaha]

sorry guys to ask again but will the narrow stance for the zbro front end work on a 2008 nytro rtx and still be able to use the stock yamaha shocks? i dont really wanna use the 43" stance on my rtx, it would be nice to narrow it up a bit and from what i am getting the zbro kit should be stronger and a better front end,

 

[AKrider]

Connecting the legs of the a-arms with a cross member isn't going to make the structure any stronger. In fact, I would be concerned that doing so would limit the desirable effect of redistributing stress by flexing to a degree and become more prone to failure for this reason. In any case, the weak links will still be the where the a-arms attach to the frame.

Yeah, I don't know? I was concerned that by welding in crosstubes the additional heat might weaken the a-arms and eventually cause failure. I never did get to see what the long term effects were on my buddy's sled because he got rid of it.

Zbroz made it sound like you could get whatever width you wanted. i'm sure there are limits but I took the statement to mean you could order a-arms that were the same length as stock. I also was not interested in wider a-arms.

 

[sheetwright]

sorry guys to ask again but will the narrow stance for the zbro front end work on a 2008 nytro rtx and still be able to use the stock yamaha shocks? i dont really wanna use the 43" stance on my rtx, it would be nice to narrow it up a bit and from what i am getting the zbro kit should be stronger and a better front end,

From what Zbroz told me you need to use their shocks with the other front end. It might also be a little tippy on the trails, cause of the narrower stance. Guys were saying they had that problem with the West coast, and Timbersled narrow stance. They had to be dialed in just right to feel decent. From what I seee there are only three companies making fornt ends close to the stock width or wider, Timber, Zbroz, and Fabcraft? Then you have West coast which is a quality product, but only makes a narrow 39" stance to date. You have to verify with these companies that they are going on a RTX/shortie with a sway bar, and what style of shocks you have. Some sites recommend the Fox floats for the narrow stance, but say they will work with the GYT clickers. Some also say you can move the spacer out to gain an inch, but I wonder what that does to the handeling. Being that the 39" where originally made for mountain guys, and not flatlanders???

 

[2008FxNytro]

Yes chrome-moly is stronger but with stronger a-arms comes a weaker subframe, somethings going to give.

To a degree....The 08 subframe is definately weak, but they 09 frame which i had to upgrade to is much stronger. I ride a lot, and very aggressive. With the chromoly arms and the stronger subframe i cant see have an issue as far as riding. Now i cant say anything as far as if you hit something but hey when that happens you have to expect something to give

 

[2008FxNytro]

sorry guys to ask again but will the narrow stance for the zbro front end work on a 2008 nytro rtx and still be able to use the stock yamaha shocks? i dont really wanna use the 43" stance on my rtx, it would be nice to narrow it up a bit and from what i am getting the zbro kit should be stronger and a better front end,

Heres the deal. If you have a short track sled then the 40in kit will NOT work. I was sent the 40 in kit, but it is designed for mountain sleds. shocks will bolt up fine and so will everything else, EXCEPT when you try to connect the tie rods to each spindle your skis will be facing each other. You have to use the 43in kit, which i am under the impression is the stock width for a shortie. I just installed the 43 kit and it fits great!! IDK why you would want to go narrower on a trail sled, just gonna make it more tipsy IMO...

 

[2008FxNytro]

AK...

Hey AK here are the pics you wanted. The arms are basically the same diameter as far as the tubing goes. All chromoly (stronger than stock). Biggest difference i can see is where the shock mounts. It is much closer to the center of the sled.

 

[arteeex]

Yes chrome-moly is stronger but with stronger a-arms comes a weaker subframe, some things going to give.

Chromoly (4130) can have higher tensile and yield strengths than other grades of steel. But, you have to compare apples-to-apples to determine if the structure will be "stronger". You can get equally robust structures with lower grades by altering the dimensions (OD, ID, and wall thickness) of the tubing. Generally the advantage of using high strength materials is you can build parts that are equal in strength but use less material (i.e. are lighter) than may be possible with other grades of steel. Even if characteristic properties such as tensile strength, yield strength, and toughness favor a material in an application, a proper design can still compensate for differences. Chromoly is a good material for the application, but the design must capitalize on its properties too.

 

[AKrider]

Right on! Thanks for posting some pictures. Are the pics of the LH (as sitting on the sled) upper and lower a-arms? There definitely looks to be some geometry changes with the angle of the upper heim joint. Geometry changes to the lower a-arm are more difficult to see because of the shape and bends in the tubing.

I like how the spindles are boxed on the outside. The kit looks to have used different lower ball joints and upper heims. Did the 43" kit come with longer tie rods?

As far as the discussion about widths go. I'm thinking the 40 and 43 inch widths are Zbroz marketing strategy to set them apart from the other kits. The stock width of a short track Nytro is 41.3".

You'll have to post some pics of your completed project! I think the black front end is going to look good.

 

[2008FxNytro]

Right on! Thanks for posting some pictures. Are the pics of the LH (as sitting on the sled) upper and lower a-arms? There definitely looks to be some geometry changes with the angle of the upper heim joint. Geometry changes to the lower a-arm are more difficult to see because of the shape and bends in the tubing.

I like how the spindles are boxed on the outside. The kit looks to have used different lower ball joints and upper heims. Did the 43" kit come with longer tie rods?

As far as the discussion about widths go. I'm thinking the 40 and 43 inch widths are Zbroz marketing strategy to set them apart from the other kits. The stock width of a short track Nytro is 41.3".

You'll have to post some pics of your completed project! I think the black front end is going to look good.

Nope the stock tie rods work just fine with the 43 in kit. I didnt know the exact dimension of the stock front end but i compared the two arms and seemed to be an in or so difference between the 40 in kit than my stock, so thats why i went with 43. You can use all the stock stuff with 43 as far as tie rods and shocks and sway bar.


I will def get some pics up here with the completed project. should be cool, got the black front end. white windshield, blue cowl getting some white graphics put on it today, steering relocator, and mountai assault black and white seat!!

 

[2008FxNytro]

Well guys, i ahve some bad news. I was attempting to mount the sway bar links to my new 43in arms from z broz and the mounting points are about 2.25 in. Narrower on each side then stock and the 40 in. kit. i just talked with the guys from z broz and they are going to check with teh fabricator in the morning to see what the problem is. I know couple guys were interested int he kits for the short track sleds so hold off until i can get some more info.

I should be getting a free kit for finding out all the info for them....

 

[AKrider]

Thanks for the info and keep us updated.