2011 Nytro MTX rear suspsension question

[mtnxr]

I have been playing with shock pressure on my 2011 153 MTX trying to get it to work a little better. The front skid shock is at 80lbs now and the rear at 170lbs. I have the limiter strap tightened by one hole but for some reason they are not tight even when sitting on the trailer without me on the sled. I am also feeling the front shock bottom out on a regular basis, the rear bottoms as well but not nearly as often. I can keep putting more air but wondering if this is just normal or if I should be seeing something different. I am a big guy @ 290 geared up so I am used to putting up with some bottoming but not this much. Thanks for your input.

 

[Vmax4]

Interested to hear some responses, I have a 162 with the added weight of the turbo, and I have been bottoming a bit more than usual as well.......

 

[Jagos]

I've increased my center shock to 85 psi to virtually eliminate its bottoming and lighten the steering which works well for me at 205 lbs geared up. Rear is at 170 psi on my '11 MTX. For your riding weight increase it. You might also want to have your Fox float 2's rebuilt because I found that one of my front floats had leaked a little nitrogen into the oil chamber which definitely reduced its performance relative to the other. You will really notice improved handling when the suspension is dialed in and working well.

 

[mtnxr]

I did have the shock rebuilt because I have had floats leak nitrogen before but the shock and oil were in great shape when we opened it up. I will try increasing the air pressure to see if I can get it to work. In the 200 miles I have put on it this year the front bump stops are pretty deformed from the pounding. We have been riding a trail that has been very rough for about 7 miles each way to get to the good stuff. lol It does seem strange to me that even without a rider the limiter straps are loose like the shock is not supporting the weight of the sled.

 

[nitris223]

My limiters look the same sitting in the garage. I think it is normal. We have 2 nytro MTX's. A 153 and a 162. Both do the same. Left my limiters in the last hole. Sucking them up will give you more ski pressure and your shock won't open all the way. I have 80 psi in my front skid shock and weight 240 dressed. Maybe try 90 psi. 5 psi is supposed to make a difference. Are you checking the air pressure with the weight off the sled. Don't do it with the sled on the floor, won't get the correct reading.

 

[Jagos]

New nytros on the dealer floor have a little slack in the limiter straps. As nitris said, raise your pressure in 5 psi increments to check performance. You do want the front skid shock to bottom out on a few occasions when it is properly adjusted. If pumped up so high as to never bottom out you are losing some valuable suspension movement.

Has anyone noticed their Floats appearing to lose substantial pressure as temperature drops significantly? At 0 F (50 degree drop from the garage) the shocks extended far less and then when I tried to pump one shock up the air pump would not work outside at O deg F. It actually drained the pressure out and I had to limp back. Is overfilling for cold conditions warranted?

 

[mtnxr]

Good point. I had the shock at 95lbs at one point, it still bottomed but seemed to trench more in the powder. I will keep playing with it. I have been doing this for a long time just not with the Nytro which is new to me this season so I was afraid their was something wrong but from the sounds of it, this is normal. Thanks for the input.

 

[akvector]

I have tested the cold weather drop from the garage to outside. I add 5 more psi in the garage to compensate for the drop. Don't forget about the ziptie trick. Put a ziptie around the shock you can then look at it and see how much shock travel you are using