Quantcast

Chainguides

Bikael Molton

goofy for life
Jun 9, 2003
4,010
1,146
El Lay
I smash my chainduide lower pulley all the time so i end up breaking off the lower pulley wheel in a couple ride so i stopped with e13. the straitline is the best guides i have used except when i do hit the lower slider i have to adjust the chain guide back plate so the lower slider doesn't contact the chain stay
That's why you use the black/steel lower pulley bolt that the e13s come with if you ride in a rocky region. The Gold one is all 1999 breakaway aluminum derailleur bolt stylee.
 

davec113

Monkey
May 24, 2009
419
0
all of your problems sound more than "normal" use if youre breaking the G2 so much. hell my Revolt broke before my G2 Mini did. the G2 and G2Mini are also identical besides for chainring capacity btw.
and over torquing something is not the mfg's fault, its your fault.
if you could design something in a day, we'd all love to see it :rolleyes:

Um, no... The full size G2 is significantly different from the G2Mini. I have both, remember?

The overtorquing issue I'm talking about could be fixed by reinforcing the lower guide plate. It might cost $0.10 more to manufacture, but then it would be less of a POS.

This is the second time you assume how and what I ride, please just f-off unless you have something worthwhile to say.
 

IH8Rice

I'm Mr. Negative! I Fail!
Aug 2, 2008
24,524
494
Im over here now
i love how mechanical engineers always try to one up each other. is that your great re-design? $.10 more of plastic? has MRP contacted you yet for a job?
im sorry i forgot i called you a hack another time and that you get butt-hurt easily.
 

p-spec

Turbo Monkey
May 2, 2004
1,278
1
quebec
I spoke to two guys running Straitlines recently (curiosity mostly) and one was hating on his pretty hard. Riding a 2011 Norco Team DH, couldn't get a balance between the lower guide high enough to add tension and the upper guide back enough at the same time...

I do like the simple adjust-ability of the E13s, just wish they weighed 50 grams more and were tougher as a result.
seems to me he doesn't know how to ajust it,I even raise my lower guide even more for rock clearence.

flawlesss

IMG_5296.jpg
 

p-spec

Turbo Monkey
May 2, 2004
1,278
1
quebec
absolutly ****ing hate how pictures aren't sized properly.


more complaints,I ****ing hate change
 

jonKranked

Detective Dookie
Nov 10, 2005
85,573
24,191
media blackout
i love how mechanical engineers always try to one up each other. is that your great re-design? $.10 more of plastic? has MRP contacted you yet for a job?
im sorry i forgot i called you a hack another time and that you get butt-hurt easily.

hey everyone, thread's over. the expert engineer has spoken.
 

davec113

Monkey
May 24, 2009
419
0
i love how mechanical engineers always try to one up each other. is that your great re-design? $.10 more of plastic? has MRP contacted you yet for a job?
im sorry i forgot i called you a hack another time and that you get butt-hurt easily.

You're acting like a d-bag for no reason.

Another thing. Stop putting words in my mouth. I never said $.10 "more plastic". IMO, the solution would be to have an aluminum sleeve that presses over the backside of the lower guide surrounding the bolt. Either that or mold it into place during the mfg. process. The f'ing lower guide that I just bought cracked when I turned the bolt 1/8 of a turn or so past snug. The force required was only slightly more than the force required to turn the bolt freely, as the bolt has some threadlocker on it, making torque specs useless. So, the guide is not very robust and I consider that a huge design flaw.

Basically, MRP has a sh!t-load of small improvements that could be made to their G2 guides.
 

Sandwich

Pig my fish!
Staff member
May 23, 2002
21,031
5,921
borcester rhymes
yeah it's not like your chainguide is going to melt off your bike if you use triflow by accident.

i have been running e.13 for about 8 years or something and never once thought about lubricant and mine doesnt look like a pile of molten wax.
Yes really. You can honestly tell me that derailleur manufacturers have some super secret plastic that chain guide companies don't have? For the last 50 plus years? How come shimano can make a derailleur jockey wheel in plastic and have it last forever, but neither e13 nor mrp can build their stuff out of the same thing, or at least warranty it should something happen? I won't argue with you, buy the disposable ****, love it, whatever, but it's not for me.
 
Last edited:
Dec 7, 2009
197
0
Cloud Kiwi
Originally Posted by davec113

I can.

The design of the G2 backplate is ****. G2mini is a little better, but with the G2 there is too much material removed between the points where the taco bolts to the backplate, which is why mine bent with only normal use. They could also use 7075 aluminum, like straitline, which is 2x as strong.

The lower guide plates are too exposed and I've broke mine 2x.

The lower guide plate is held on by a bolt that can be too easily overtorqued. This design is complete crap. I'm a ME, and I could design a better... and maybe slightly more expensive... lower guide in a day.

The lower guide plate of my g2 mini is also held on by a small machine screw from the backside... well, the screw's head is too small to catch the channel in the backplate and hence doesn't offer the structural support needed. I broke them...

The lower roller's bearing was completely clogged with mud at one point. Not sealed well enough.


Sorry, but IMO, the MRP G2's design needs some further refinement.
Dave Ive had similar issues as you, not so many but the origonal G2 36t-40t I replaced the bolts you over torqued, I didn't break anything but I did think quality of the bolts especialy the heads were crap and cheap for the price you pay for the guide which Im not moaning about, I just expect the price to relfect the quality, cost me a couple of bucks at a home depo, Ive had no issues since.

Ive replaced 2 lower roller guards, minor but dam expenvie each time for such a little hunk of plastic, but the guide has performed well, other wise I'm happy something fails if thats the design and its not my frame its a cheap failure if you look at it that way.

Still, now Im after a 32-36t to replace it and the Straitline is going on, Ive been so impressed with the ones Ive tried or seen and the comments on here only re-inforce it to me.

Sorry mr e13 and MRP but this time Im going Strait hook line and sinker.
 
Last edited:

davec113

Monkey
May 24, 2009
419
0
Chainlove is blowing out the Sunline V1 guide for $30 now.

I picked another one up for the trailbike, my '09 Trek Remedy does not have ISCG tabs (the Sunline comes mounted on an iscg adapter plate), and the lower guide rotating up and hitting/bending on the chainstay is a huge issue. The Sunline has a spring loaded lower roller, which I'm hoping will make the guide rotating on the BB a non-issue. It weighs more than the Straitline but if the spring loaded lower guide works like I think it will then it'll be worth the extra weigh and I also don't mind saving $100.
 

bdamschen

Turbo Monkey
Nov 28, 2005
3,377
156
Spreckels, CA
Yes really. You can honestly tell me that derailleur manufacturers have some super secret plastic that chain guide companies don't have? For the last 50 plus years? How come shimano can make a derailleur jockey wheel in plastic and have it last forever, but neither e13 nor mrp can build their stuff out of the same thing, or at least warranty it should something happen? I won't argue with you, buy the disposable ****, love it, whatever, but it's not for me.
How come e13 and mrp can make a taco or bash ring that I can hit on rocks yet when I go to hit my derailleur on a rock everything goes to hell? :shakefist:
 

dreads

Chimp
Oct 10, 2010
28
0
That's why you use the black/steel lower pulley bolt that the e13s come with if you ride in a rocky region. The Gold one is all 1999 breakaway aluminum derailleur bolt stylee.
useful information on ridemonkey!? thanks for the info I will look in to getting one of these.
 

Sandwich

Pig my fish!
Staff member
May 23, 2002
21,031
5,921
borcester rhymes
How come e13 and mrp can make a taco or bash ring that I can hit on rocks yet when I go to hit my derailleur on a rock everything goes to hell? :shakefist:
Because it's not designed to bounce off rocks, whereas a bash guard is? But the pulley wheels in both items ARE designed to do the same thing, but are not both compatible with all chain lubes.
 

Da Peach

Outwitted by a rodent
Jul 2, 2002
13,681
4,904
North Van
^ yup. i did that to mine too. mine projected way past the chainrings too. tore it off after less than a season.
 

Transcend

My Nuts Are Flat
Apr 18, 2002
18,040
3
Towing the party line.
Just to add to the fun, here's how you kill a LG1+:



The LG1+ was designed to do exactly that actually. Compress and crush, but not explode. You can both finish a race run that way, as well as not tear your leg apart on sharp plastic pieces.

On another note, I put an XO guide on recently (an MRP g2 I think?) and it's been pretty flawless.
 

Uncle Cliffy

Turbo Monkey
Jan 28, 2008
4,490
42
Southern Oregon
The LG1+ was designed to do exactly that actually. Compress and crush, but not explode. You can both finish a race run that way, as well as not tear your leg apart on sharp plastic pieces.

On another note, I put an XO guide on recently (an MRP g2 I think?) and it's been pretty flawless.
Yep. I just retightened the mounting bolts after it slipped, and it got me through the rest of the day. (Two of the ISCG bolts were bent!)

I didn't like this guide on my Intense. Big clearance issues that required Dremel action. The replacement is a MRP G2 SL that didn't need any modifications to fit...



It's worth noting that the SL design seems tougher than the original G2's taco. If I kill this, back to Gamut for me...
 

Transcend

My Nuts Are Flat
Apr 18, 2002
18,040
3
Towing the party line.
G2 SL is what has been rebranded the XO guide. Seems pretty solid. Did have the chain slip at one point and get loose on the chainring, but still tight in the idler pulley. That was weird.
 

davec113

Monkey
May 24, 2009
419
0
G2 SL is what has been rebranded the XO guide. Seems pretty solid. Did have the chain slip at one point and get loose on the chainring, but still tight in the idler pulley. That was weird.
I've had my chain slip off the front ring to the outside a couple times. I can't move either upper or lower guides in all the way to the correct position or they hit on the mounting tabs of my Shimino SLX crankset, so there is just enough room for the chain to bounce off.

The G2 mini functions ok, but needs some work on the details. Also, $14 + shipping to replace the lower guide plate is a huge rip off.
 

Ithnu

Monkey
Jul 16, 2007
961
0
Denver
I had my e13 taco snap right off at the MSC Keystone race. Took the pully with it.

I was thinking about switching to MRP but after reading here it looks like it wouldn't matter.
 
Dec 7, 2009
197
0
Cloud Kiwi
Just loving the Straitline Silent guide one of the best components Ive ever bought.

Totally awesome, totally silent and smooth riding in dry or wet ruddy awesome doesn't hang up on ****,

Cheers Straitline pure quality..:thumb: