121-144 extension...help please

[4strokrmannow]

I just did a 144 track extension on my 2003 rx1.went with 8 tooth drives.but now i am getting alot of trenching and ratching some in the deep snow..I was told to install drop brackets on the rear. Will this help and if so how far do i drop it?

 

[Cilius66]

What does the "drop-brackets" do?

 

[4strokrmannow]

drops the suspension and changer the angle...i see these alot on long track mountain sleds

 

[Cilius66]

okay, is it a big deal to make them or do you buy them??

I have also the 144" extension.

 

[maxdlx]

I have a set of stock rx warrior drop brakets. Problem is shipping to Norway would be killer. $30 for the brakets, plus shipping. Maxdlx

 

[sobfrogg]

Did you move the rear suspension back when you streched to 144"??

This mod really needs to be done. The approach angle on the RX is to steep.

I streched my 03 RX to a 144 this fall. IT FLOATS in the pow like never before. The trenching is nowhere as bad as it was before the strech.

Oh I also added the drop brackets

 

[Cilius66]

When moving the suspension back, Do you mean to drill new holes?

 

[NewfieRage]

Moving Suspension Back

How do you determine the correct distance to move the skid back? Did you reinforce the tunnel at that point?

 

[4strokrmannow]

I droped the rear mounting holes 2 inches...helped alot but still trenches some.. i am new to the yammaha suspension adjustments, alot more to it than skidoo's...thanks for the help

 

[sobfrogg]

When moving the rear skid back yes there are new holes to drill.
The front and middle mount holes where moved back 3" and down about an 1/2". The rear mount got a new drop bracket and was also moved back.
Middle mount: New bracket here

Front mount: The new location is the rear one with the 3 rivits around it. I had to move the stock mounting/locating plates

Rear mount:

Template mounted in tunnel:

This will really reduce the trenching lots.

 

[Cilius66]

Is it necessary to move it with just the warrior drop down??

 

[pro116]

as stated above for powder riding relocating gets rid of the trenching.You should have went to a 136" rail extension and relocated the skid to accept the 144" track

 

[Cilius66]

I do have the 136" laying in my garage, and I was thinking about to switch and move the suspension back. I think I use a perspex( dont know if this is the right word) to get the holes right. Is 3" back and 1/2" down good measurements? and a drop down bracket.

 

[sobfrogg]

3" is about what I moved mine back. Drop down brackets came from MPI.

Had it out over the weekend and I was VERY pleased