MRP Long Range Patrol chain retention system is a strong and durable systemThat is designedTo be used with a double chainring system. Designed for use withTwo chainrings Max-tooth designations referencesThe maximum size ofThe larger chainring CNC machined alloy boomerang Upper boomerang "fin" keep chain from fallingToThe inside ofThe frame E-Type guide allowsShimano derailleurTo be mounted directlyToThe boomerang Polycarbonate Lite bashguard features weight reducing relief se
Bike Setup: Jamis Dakota 29er
this bashring
crankbrothers mallet 1 pedals
custom wheels
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Submitted by
wheelmantom
a Weekend Warrior
from SoCal
Date Reviewed: August 7, 2006
Strengths: Wish I knew!
Weaknesses: Poor compatability
Bottom Line:
MRP website shows the LRP to be compatible with the Moment and it's 73mm BB. Perhaps they didn't take into account the external type BB when making this claim. Because the LRP guide arm replaces the single 1mm BB spacer used during installation, the bolts for the small chainring rub. The addition of a second spacer ring to provide clearance binds the external BB bearings when trying to fully seat the drive side crank arm onto the spindle. LBS has looked at the problem and suggests milling a groove in the guide arm. More $'s into an already overpriced product.
Weaknesses: Obviously the "bash ring" taht comes with the unit is not, in fact a "bash ring", but more of a race for the guide roll on. Wish they had a different color roller, other than just ORANGE!
Bottom Line:
This is a good product if you pair it with the Race Face "Bash Ring". Have not dropped a chain since installing, but have "sucked in the chain" while swithing to my small chain ring. This also happens to my buddies E13, so I guess it's normal for chain guides.
Bike Setup: Flat black '04 Yeti ASX, Cane Creek 1.5 XX head set (awesome!!), Hayes Comps, Marzocchi Jr T (very plush!), Intense Mag 30 rims (STRONG!!), WTB Moto Raptors (not sure what all the fuss is about, these have been good to me), WTB Race seat (comfortable), MRP LRP (so far, so good!), Race Face North Shore XS cranks (stiff and fairly light)!
Simple and effective.. I used to the chain on every ride, most on jumps and drops.
Got tired of it and went to the shop and asked for the cheapsest priced chain guide for a double ring and they told me it was the LRP for $90.Chain has not fallen off since installing this pupster. You don't need the frame mounts to install this. The roller guide arm installs by using the BB driveside to keep it in place. Simple.
The bashring that it comes with is thin and not a really a bash ring. It's more like a retainer plate because it just keeps the chain on the large ring more than protect it from logs and stuff. It's thin and tad thicker than a disc rotor. That's the only complaint really.
The LRP is quiet and has no friction so pedalling is normal and you hardly even know it's there.
Weaknesses: Takes a little bit of tinkering to dial, not much. Guide arrival is also accompanied by endless monkeying with your front derallieur to return it to its previous shifting ability. It is a farce to call that skinny little thing a bashplate. Also it is horrendously expensive...i.e. overpriced. It does do what it says, but...
Bottom Line:
I am a sea donkey for buying either one of these guide systems, I've decided it is alomst foolish to buy a guide system for a double ring setup until these companies have really got a functional product developed. Then again, maye I am a hamfist who set 'em both up in botched fashion. At any rate, if anyone out there is aspring to sea donkeyhood, they should purchase the Blackspire product. I am going back runningj ust a regular two ring set up, and will correct my abhorrent riding style to keep from dropping the durn chain. Sorry MRP. Not the hot sauce. And too expensive..
Similar Products Used: Blackspire Dualie. Its beefier and more effective and and cheaper and (maybe sheer luck, maybe not) Canadian. Get that one if you are in the market.
Bike Setup: 02 RM Switch-Super T- Hayes F&R-Race Face cockpit-SRAM x.o(ahhhhhhhhhhh) RF NS Cranks etc. - nice rough little bike
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Submitted by
John Y
a Weekend Warrior
from Oak Harbor, WA
Date Reviewed: October 4, 2002
Strengths: Never drop the chain, looks pretty sweet.
Weaknesses: The bashring is friggin' skinny, I haven't totally destroyed it yet, but I'm sure I will pretty soon. Price seems steep for a simple device.
Bottom Line:
Pretty decent piece of hardware, except for the weak ass bashring. Very few parts (3). Switch out the skinny bashring for a beefier one, and you'd have a nice setup.
Bike Setup: 2001 Kona Stuff, MRP LRP, WTB Weirwolf 2.5
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Submitted by
CaveMan
a Downhiller
from Rhode Island
Date Reviewed: October 1, 2002
Strengths: Easy Installation Works as Intended
Weaknesses: Thin "Bashring"
Bottom Line:
I've had this thing on my bike since I bought it and haven't dropped the chain once during those months of trails, urban, drops, and downhilling. Shifting is perfect and I haven't hit the roller arm on anything, even without raised chainstays it seems you can tuck it up high enough to avoid contact with logs or rocks. The only drawback is the thin "bashring", it's not really a bashring but rather a chainguide. I'm sure the roller would work fine with another real bashring but it sucks to have to buy something to replace half of this great but overpriced product.
I'm real happy with the thing. I paid my local bike shop $15 to install it and I've had no problems. The only down side is that my shifting got kind of crunchy. I loosened the tension a both ends of the cable and that helped a lot. Since I've had the LRP I have not dropped my chain once. Before the chain guide I would drop my chain at least 3 or 4 times on my local downhill. I would recommend it to anyone who has trouble with chain suck or chain drop.
Weaknesses: The stupid plate holding the roller makes contact with what ever I'm rolling over and moves up into my chain stay
Bottom Line:
Some people have no problems with the LRP(loose range patrol) I wish i was one of those people... My roller bolt snapped trying to hop onto a rock and the roller plate keeps moving into the chainstay while riding over obstacles. The set screws are tearing up my bottom bracket whenever the plate moves which is about every 15-20 minutes. I've tried to crank down on the BB cup to prevent it from moving but no luck..I guess i'll try teflon plumbers tape on the cup to prevent it from loosing up...When it's working, then everything is great but when it's not ...it really ruins your ride.
Strengths: simple installation, does what it is intended to do, it keeps the chain on.it is also quiet and does not interfere with shifting.
Weaknesses: the MRP bash ring, that is provided with the lrp, is skinny as a six year old. chain will sometimes derrail when pedaling backwards how ever it takes several revolutions.i needed a bb with a longer spindle in order for successful installation.retail it is expensive.
Bottom Line:
i heard this thing sucks, but contributed the heresey to poor installation. so far it works good and has yet to drop a chain since installation.i did not bother to install the bash gaurd that mrp provides because my blackspire ring god is twice as thick and has been used and abused all season.works good.
Strengths: Absolutly no fear of chain droping on to the BB. I can jump my bike now, you can't be dropping chains when your trying to jump... Getting it inspired me to go with a 36 tooth middle ring and 24 tooth granny, which seems to be perfect with an 11-34 cassette. I have an xtr rear derailuer and an xt top pull/swing front, which helps keep things smooth. This setup rides better then any gearing I have ever ridden. I have 9 gears on the middle ring that cover the range of my ridding. 25mph fire road runs are ok on the 36/11 ratio, and 36/34 eats up all but the very steepist of rocky climbs. I seem to ride around the middle 5 cogs on the rear cassette when going through the technical sections. If you try this gear setup with an LRP, you will never go back. I'm so freakin happy...
Weaknesses: NONE, I seem to have the new type of roller which has two diferent heights to the guide area, and I can backpedel perfectly. Its probably an easy fix to switch rollers, for those without the improved one.
As to the cost, I guess they are coming down as mine was 100.00 not the 120 or so people have been complaning about. And while I agree that I too wish the price was lower, you have to take into acount that your not paying for a peice of metal and rubber, your paying for people to dedicate there lives to bringing us better performing drivetrains and such. Research, development, administration, marketing, and overhead (saleries, rent, etc...) all are part of the final equation. And it works better then I imagined! Woot! you could build your own, I'll get my chainguides from people who have the time to dedicate themselves to it. =D Sorry for ranting but I'm so happy with the damn thing I'm kinda outa control...
Bottom Line:
A very worthy addition to my dream bike in the making. Anything that sets your bike more to your liking is a plus! My first upgrade that exceeded my expectations!
Another company is making these as well. Evil Bikes, who I hear make excalent frames, have 2 ring chainguides now. http://www.evilbikes.com/
Dont forget to consider the new 3 ring chain guide by HEIM. I've no idea were these guys are from, but i've seen them for sale at http://www.cambriabike.com/chain&guide/chains.htm
Good luck to all those looking for the perfect drivetrain setup...
Similar Products Used: Only single ring guides or 3 ring xtr setups...nothing compares for technical trail rides with uphill sections as well as jumps and drops.
Bike Setup: 01 Diamondback XSL race, 4.25 rear travel (I need a better frame, under 600 bucks with 5" of travel and at least sealed cartridge at main pivot, E-mail me if u gots!) with an sid xc (drop....clank, but hey=). 02 Psylo race at 125mm(makes the ride!), Avid mechanical disc brakes (soon to be upgraded), Thompson elite seatpost (just like everyone else it seems), shimano 646 pedels, Koski stem and dh riser bar, and a sweet drive train: DT/hugi disc hubs Mavic f519 rims xt rear cassette xtr rear D lx hollowtech cranks LRP with 24 and 36 rings xt front D A little bit at a time, like a moth in its coocon, this bike will transform itself into the sickest Uzzi slx you have ever seen (it might spend a year as a SC bullet if the funds arent there for slx).
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Submitted by
Heath
a Weekend Warrior
from Raleigh,NC
Date Reviewed: May 15, 2002
Strengths: Keeps chain tight and on hte rings where it belongs. It also removes some of that annoying chain clanking from the chain bouncing around, without having to wrap a tube around your chainstay (I hate that). Very light, and should prove to be durable for all but trials riding.
Weaknesses: Reputation, by a handful of unhappy users, some of the outer guards may be too soft. May be hard to install for inexperienced wrenches. NOne of these are truly warranted, it works if installed and setup properly.
Bottom Line:
If you can find one on sale, or used it will do the job it was intended to do, but it's not worth $120. Too many people with CNC machines are robbing consumers. There is absolutely no way these things cost over $5 to make. They have hardly anything to them. You can make this yourself if your handy. NOthing groundbreaking or original was used. They use spacers from in-line skates to hold the roller on. Great money making idea, but shop around for a better price.
Similar Products Used: none, I wanted to keep two rings
Bike Setup: like I want it
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Submitted by
MartyLane
a Weekend Warrior
from Chico, California, USA
Date Reviewed: April 9, 2002
Strengths: Chain doesn't fall off in rough conditions. Much more smooth and tight feeling drivetrain, especially when hammering out of the saddle on climbs.
Weaknesses: Installation issues on the Stinky. Roller arm hangs down a bit, and may not clear obstacles like logs.
Bottom Line:
I apparently have one of the new LRPs. Mine came priced lower, with the thicker bash ring, and a roller that is a bit different from earlier ones I've seen. This supposedly new roller has a smaller diameter "track" on which the chain rides when using the middle ring, and a larger diameter track when using the granny ring. My guess is the smaller diameter track keeps the chain from dropping to the granny ring when back pedaling on the middle ring -- a complaint with earlier models.
The installation problem I had was in alligning the smaller diameter track of the roller with the middle ring. Using the Mountain Speed supplied hardware, the smaller diameter track of the roller alligned more with the granny ring than with the middle ring -- this caused rough drivetrain operation when using the middle ring. I corrected the problem by installing the roller with a slightly longer bolt, and a couple of extra washers. This shifted the position of the smaller diameter track of the roller, alligning it with the middle ring. Drivetrain operation was much smoother. The chain doesn't drop when back pedaling. I reported my setup to tech@mountainspeed.com, and they basically said that if it works well, then don't change it.
And, it does work well, no doubt about it. The drivetrain is much more solid than stock on the Stinky. I'm very satisfied with the LRP - it's fantastic! The lower price is welcome, but, of course, what consumer wouldn't like it lower, still? The perfect chain retention device would allow better obstacle clearance, something the LRP lacks. Even so, the LRP is a huge improvement to my Stinky.
