[dilzy]

I'm just about to grab an e-13 lg1 and want to know if the 36t guide is actually any different, or whether it just comes with the smaller taco.

I plan on running a 34x11-34 most of the time and switch out to a 36x12-27 for dh races.

Also, I'm assuming I need the wide backplate as it's going on an sx trail?

 

[b-b00gie]

If the chainstay is below center of your BB, you need wide. I believe the backplate for the 40t is bigger.


If you're only running 36T max than there's no worries.

 

[davep]

The backplates are different, and you will need a wide.

In my case, I had to do a little mod to get a 36t ring to fit on a 36t guide. I could not get the upper guide 'up' enough to prevent it from rubbing on the ring/chain.

 

[PhilipW]

Hey guys,
Dilzy - the only difference between the 36T version and 40T version of the LG1 is the taco size (and like 10 grams). You would need the ISCG-OLD version, Wide angle backplate for the SXT.

Davep - Where was the upper slider rubbing? For a 36T ring, there should be ample room to move the top slider. It was designed to have a 3mm gap between the top of the chain and the inside top part of the slider. You can use a 3mm allen to measure how high it needs to be.

If you're more visual, you can watch Ricky work some LG1 magic on Pipers bike over the summer:
http://www.freecaster.com/1000006_1005453

Cheers,
philip @ e*thirteen

 

[davep]

Davep - Where was the upper slider rubbing? For a 36T ring, there should be ample room to move the top slider. It was designed to have a 3mm gap between the top of the chain and the inside top part of the slider. You can use a 3mm allen to measure how high it needs to be.

Cheers,
philip @ e*thirteen

It was sitting against the top surface of the chain. I could not get the slider to have any clearance at all with the plate in stock form. I had to file the nylock nut channels up a bit to be able to slide the slider up to prevent contact. As it is, there is about 2.5mm of clearance with this mod... works great.

after a little looking/thinking, I figured out what happened....the back plate is a 36 from an SRS/STS with the LG-1 parts......so all LG-1's must come with the '40 tooth' back plate and that is where the issue is.

Odd that the back plate would fit a 36 with the SRS top slider, but not the LG-1 slider. I guess I assumed they would have the same clearance (since they are claimed to be interchangeable) and just ordered the parts tree......

 

[guitarhero]

Odd that the back plate would fit a 36 with the SRS top slider, but not the LG-1 slider. I guess I assumed they would have the same clearance (since they are claimed to be interchangeable) and just ordered the parts tree......

Interesting, i changed from an SRS to an STS backplate and had to run the top slider with only 1 bolt to gain required clearance with a 36T ring

 

[davep]

So the 36tooth STS plate did not have enough room to run a 36 tooth ring with the STS/SRS upper slider either.....??

 

[guitarhero]

So the 36tooth STS plate did not have enough room to run a 36 tooth ring with the STS/SRS upper slider either.....??

Not for me

 

[PhilipW]

Hey guys,
Also in its stock form, the STS backplate is heavier than the SRS backplate...
I weighed the ISCG-OLD ones.
STS - 135g
SRS -114g

So, unless you cut off the strength ridge and mod out the STS backplate a bit...it is heavier. It is also a slightly smaller angle between the boomerang arms than the SRS backplate, so the STS isn't nearly as versatile on suspension frames.

Thanks guys!
-philip