PezCycling News - What's Cool In Road Cycling : FINALLY! Ratcheting Torque by Effetto Mariposa

tech n spec
FINALLY! Ratcheting Torque by Effetto Mariposa
One thing most of our readers have in common is that one of their current bikes costs double + what their first car did. My number is 14X... With that in mind, Torque wrenches should be owned by virtually all of us and a ratcheting head version is very welcome...


Effetto Mariposa have more than a few very cool products. A couple very good tire products and arguably the best carbon friction and antifriction stuff available come from the Butterfly Effect ("Effetto Mariposa" translation...). But the product that gets the most use from me is the latest version of one of the nicer torque wrenches available.

The Giustaforza II 2-16 Pro Deluxe.


Click the thumbnail at the page top for the larger picture

Simply because I'm lazy, from here out we're going to call this product the GF Pro, and we'll start with popping the top off the box...



This is a more complete kit than a few of the past editions, but wrench itself retains its slick good looks, easy to hold shape and easy to use function.



The primary change to a very high quality product makes life WAY easier for anyone turning a torque wrench on what are now probably multiple different fasteners on virtually all high end road bikes.

The head now features a uni directional ratchet that allows you to keep the bit in place while tightening to spec.



Using the tool is easy...

1. Pop on the compact universal receiver bit...



2. Add one of the multiple bits that come with the wrench...


The button on the back of the wrench head is the quick release

3. Dial up the torque for your fastener (the 2-16 in this product’s name stands for the adjustment range of the wrench between 2 and 16 Nm), by turning the dial on the bottom of the wrench until the line in the window reaches your number...



and tighten your fastener till the head of the wrench tilts to the side with an audible (and tactile) "click".

That's pretty much it.

Something else Effetto Mariposa did better this time around is add a set of extensions in the most common Torx star head and two most frequently used hex head sizes...



They also added a receiver so you can use all of the other bits included, but the ones you reach for the most are covered...

The extensions are very nice as thet reach through water bottle cages easily, while the ratchet head allows you to keep twisting without constantly pulling out and resetting for the next turn of most shorter wrenches...

Another nice feature here is that the compact head shape of this wrench means you don't have most of the clearance issues you have with standard hex wrenches...



With the ratchet feature, you won't be fumbling as much to start with, but after looking at this wrench and noting my standard Park Tool wrenches (and several other off branch hex heads I have), I really had to ask myself why bike tool companies need that extra hand space.

I use Park for almost everything and have no doubt about the quality, but they and others should hack the back off of their hex wrench handles. Virtually nobody is tightening so hard on bicycle equipment that all of that hand space is needed for leverage, yet we've all fumbled with these things in tight spaces where you only get a partial turn on a fastener before the handling is hitting something.


So what would I change?
This thing looks killer, works with very good tolerances and does exactly what it should in making sure that I'm not doing what more than a few would-be experts do and damage equipment because their ego tells them they can "feel" correct torque.

The limit click is nice and positive and the ratchet action is smooth.

But I would change one thing strictly knowing that Effetto Mariposa have more than enough brain power and machining skill on tap to pull it off...

Why not eliminate the possibility of this little guy getting lost by eliminating him all together?



I'm thinking the next Giustaforza II 2-16 Pro Deluxe should machine the receiver piece right into the ratchet head.



That way all the bits and extensions get inserted directly into the wrench head...


Using it virtually every day...
The fact that the bits use a receiver socket means little... I'm pretty jacked about this landing here and it started regular use straight away as there are a few bikes going together, and I'm constantly swapping parts even on the bikes that are not new.

The new GF Pro is very easy in your hands, everything fits well together and the wrench gives a very positive torque limit response. The case material on the Giustaforza wrench that's been here for a couple of years is holding up extremely well and has also held its calibration almost perfectly over what's been a few thousand clicks (it's important to reset any torque wrench back to zero (lightest) setting between use).

For all but commercial shops, this is a tool that should last you a life time and still be ready for whoever gets your stuff when you're dead. I've seen these at a couple of commercial shops too though and they're good for years even in that environment. There are also replacement parts available for the GF Pro.

Another example of the quality of the part is that it is fairly simply recalibrated. That probably won't matter to most non shop folks because these things should go to at least 5000 clicks and still be inside 4% accuracy...

The cost on these is pretty much what I've come to expect from anything machined and assembled in Italy from quality stock. $249.95 lands you the box set and all of the bits.



The GF Pro's are available through retailers and your shop can get them in North America through Cantitoe Road, along with the rest of the Effetto Mariposa line up.


Have Fun,
Charles Manantan



Thanks for looking. If you have other experiences with gear, or something to add, drop us a line. We don’t claim to know everything (we just imply it at times). Give us a pat on the back if you like the reviews, or a slap in the head if you feel the need!

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