Petzl ascension vs Black Dimond Index


Original Post
Callum Parkinson · · Unknown Hometown · Joined Jun 2017 · Points: 95

As the title says. Which do you think are better. Have you used both? What are the pro and cons?

that guy named seb · · Britland · Joined Oct 2015 · Points: 205

I think the index looks kinda cool but you can get the same sort of effect by just using your left hand on a right handed ascension. Petzl's is the enduring classic with even Tommy Caldwell still using last gen petzl ascendors, Personal experience tells me i like the nice big hole at the bottom and it feeds very smooth though i cant say i have tried the BD one.

Ryan Mac · · Seattle · Joined Dec 2015 · Points: 5

I use the Petzl for rope access and yard on it in all kinds of directions and ways it maybe shouldn't be used for and it's always been super confidence-inspiring. No experience with the BD though. 

mpech · · Unknown Hometown · Joined Sep 2013 · Points: 6

Ive used both--Petzl is better than bd.

Best jumars I've used are the yellow Jumars from back in the day. Heavy but super silky action and easy to unlock.

PatMas · · Tulsa, OK · Joined Jan 2017 · Points: 0

I wish black diamond still made the nForce ascenders. They were so smooth. Rattle like crazy on your harness though.

mpech · · Unknown Hometown · Joined Sep 2013 · Points: 6
Patrick Mason wrote:

I wish black diamond still made the nForce ascenders. They were so smooth. Rattle like crazy on your harness though.

funny, when I said I liked the petzls better than the BDs, I was referring to the nforce model. I found that they would lock up all the time on me... maybe i was doing something wrong? 

PatMas · · Tulsa, OK · Joined Jan 2017 · Points: 0
mpech wrote:

funny, when I said I liked the petzls better than the BDs, I was referring to the nforce model. I found that they would lock up all the time on me... maybe i was doing something wrong? 

They can be gimmicky to get off of the rope, but it seems to take way less 'rope weight' for it to slide up smoothly compared to the petzl. At least for mine. I use the petzl for the top hand, and the BD for the lower hand for this reason. The petzl tends to just lift the rope without progressing up.

Billcoe · · Unknown Hometown · Joined Mar 2006 · Points: 655



The Black Diamond Nforce may have been the worst ascender ever made. The worst. Even experts would have it slip on them. I hated them as soon as I used them and quickly sold mine that I'd bought when one of my Petzls got old. Wound up just replacing the Petzl. Do a search. 


As far as the new BD, I have no experince, but will note that the Petzl has widespread usage and many happy users. It's the defacto standard. 

Ryan Hamilton · · Orem · Joined Aug 2011 · Points: 20

I've used both of the new versions quite a bit. I have found that they work almost exactly like each other. The Petzl gets the buy in my book simply because it has a big hole in the bottom, which I use to clip my ladder and daisy to. You don't NEED to clip both there, but it's nice. 

Guideline #1: Don't be a jerk.

Post a Reply

Log In to Reply