Looks like it could be a reel PITA come a rebelay or deviation though!

Looks like it could be a reel PITA come a rebelay or deviation though!

Looking at it should behave pretty similarly to the croll which means rebelays etc shouldn't be an issue.

The advantage as I see it, apart from the fact that it's a shiney thing, is that the rollers should significantly reduce friction which means, as Roy suggests, rope should run more freely.

Possible downsides: It does not have such a low profile as the croll which could be a real pain in crawls etc. Secondly, how will the rollers perform in mud? Thirdly, cost

2ndly I wouldn't worry about space in crawls it isn't as important in a mine, the only place we have done any serious crawling was the mine we visited last week andd that wasnt particuarly tight...?

This is nearly awesome. Sadly, it is crap and here's why.

It's a chest jammer/roller in the croll position. The whole limitation to ropewalking is because of the croll position. You need it higher up. This appears to have been designed by someone who has not actually tried ropewalking with a croll-position roller/jammer. You have to use your hands and this defies the whole point of it.

As a roller/jammer combination, it looks excellent. It is in the wrong position though.

I would be much more keen on crossing that with this:-

http://farm4.static.flickr.com/3173/5727019840_27fac9288d_b.jpg 

by welding it to a bar and then having a bra-ascender.

This would solve the problem of having your knee jammer as your top jammer. (it doesn't sound like a problem until you try it)...... I nearly had an upside-down moment in a shaft developing my ideas!

I would strongly consider buying one and bodging it to a bar. I think it could be a magic bullet.

I may be interpreting this wrongly, but it looks like the rollers are to reduce edge friction between the rope and the part of the ascender that retains the rope to the cam.

Ie NOT a roller/buggery box.

I think you are right - that said I think it could function as the top attachment point in a ropewalker i.e. function as a roller box even if that was not the manufacturers primary intention.

I think you are right - that said I think it could function as the top attachment point in a ropewalker i.e. function as a roller box even if that was not the manufacturers primary intention.

Well, I am about to hit the button on this, so we'll see if it does indeed work as a roller box. Got to love Xmas bonus! Merry Xmas to me ;)