Chainguard Reco for Jet 9?

quelocotony · Jul 15, 2011

Looking for a reco for a chainguard for my Jet 9.

Currently running 1x9 with a 32T SS ring and MRP chainguide. However, the chain rubs on the chainguide when on the higher/lower gears so I feel I'm loosing pedal efficiency.

I've been thinking about switching to different system like the N-Gear Jump Stop or the Deda Dog Fang to eliminate the friction/rub but still protect the frame from dropped chains.

I was wondering if anyone here has used either of these or have other suggestions that I should consider.

Thanks!

Niner Bikes · Jul 15, 2011

Quelocotony,

I am currently using the MRP 1.x with a 32tooth chain ring and a 9spd 11-34 cassette on my Jet9. Its the bottom bracket mounted version and I have it setup so that there is no rubbing in any gear after sag. I have also used the e.Thirteen xcxst and had similarly great results. Initially I had a little rubbing with the MRP but after adjusting the angle a bit it all worked out.

You can call me if you have any questions about chain guides.
1877NINERXC

Eric

boomn · Jul 15, 2011

I agree that it could just be the positioning of your MRP. I fiddled with mine on my Inbred hardtail for a little while but eventually got it to work with only very occasional very light rubbing. The key for me was the get the guide as low as possible. The bottom of the guide is curved to match the path of spinning crank arms for this very reason. Angle of the back plate also matters a lot like Eric said. Also, at some point I think it is just a mental thing, as a little bit of occasional rubbing really isn't really costing you much imho

Part of the reason I'm encouraging you to try it is because both the N-Gear and the Dog Fang were let downs when I tried them. The N-Gear worked well most of the time but it relies on a thin steel plate attached only at the far end and under certain circumstances the force on the chain is able to bend the steel plate and let the chain through. It's not quite as easy to bend by hand so pulling the chain back out usually involved loosening the N-gear and then having to readjust it afterwards. I honestly can't remember what I didn't like about the Dog Fang, but as a 1x guide it was failing as well and I threw it out.

quelocotony · Jul 15, 2011

Eric & Boomm, thank you both for your responses. I will try to further dial in the MRP chainguide to see if I can eliminate the rub which is considerable at this time.

Eric, I may give you a call if I have additional questions/challenges. As always, your customer service is bar none the best.

tony

Fogerson · Jul 18, 2011

I use a bash guard and a k-edge cross single chaincatcher (made for cross bikes) with a fabricated extension. A file, hack saw, bolts, drill, a little paint, grinder, and 3/8" square steel stock...and a little time...

Working great so far. Does what a n-gear jump stop does, but not as flimsy. 'Wish I could move it farther down the frame a little bit, but it seems to be doing the trick...'haven't dropped a chain since I did this in March.

A little spendy, but I caught it for sale somewhere for $35, so I had to try

quelocotony · Jul 19, 2011

Fogerson said:
I use a bash guard and a k-edge cross single chaincatcher (made for cross bikes) with a fabricated extension. A file, hack saw, bolts, drill, a little paint, grinder, and 3/8" square steel stock...and a little time...

Working great so far. Does what a n-gear jump stop does, but not as flimsy. 'Wish I could move it farther down the frame a little bit, but it seems to be doing the trick...'haven't dropped a chain since I did this in March.

A little spendy, but I caught it for sale somewhere for $35, so I had to try

Nice set up! I was able to resolve the rub issue I was experiencing. Bike no longer pedals like it weighs 40 lbs.

I may some day give the bash/ k-edge a shot. Thanks for posting.

Chainguard Reco for Jet 9?

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