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Wednesday, 28 September 2016

Tech Talk: Pole Evolink 140 29"



Pole's design style is functional. Straight, triangle shaped tubes creates a stiff and light bike. The rest of the geometry on the Pole is just as extreme as that wheelbase measurement. With a raked out 64.5 degree head angle, steep 75.5 degree seat angle and huge 456mm chain stays Pole is amongst the slackest of bikes out there and at the same time its compact front triangle allows for heaps of standover clearance. 

Pole Evolink 140 29" Frame

Four sizes are available from the XS through to the Large. It gets 140mm of rear wheel travel coupled with a 150mm travel fork up front. Some will be pleased to learn that this bike arrives with a 142x12mm rear end (although a Boost 148mm is an option) but plenty will be delighted with the lack of a press-fit bottom bracket. Also, if you’re into bottle cages then the Pole will certainly not disappoint, with multiple mounting points provided at either end of the down tube. Pole uses high quality ball bearings and titanium axles in all links for better value.



Two Bottle Cage Mount



Folding up!

A Folding bike?
If you’re worried about trying to fit some a behemoth into your house or car fear not. The Pole has a clever trick up its sleeve. By removing the front wheel and a shock bolt, the swing arm folds under the down tube and it’ll conveniently tuck into the cupboard under the stairs.


Evolink suspension system Pole’s 

Evolink suspension

Suspension is an obvious talking point, and the Pole is pretty interesting here too. Evolink suspension system uses a twin link design. The IC (instant centre) is close to the BB and it gives the flex to the area where it's needed the most. Degressive anti squat ratio gives the bike a firm pedalling platform without pedal kickback and bobbing feel. Pole's insight is that if the bike has a stiff rear axle and front triangle but can flex from the middle the bike rides better. Evolink's are built with oversize dropouts to make the hub/axle interface stiffer. To fine tune this system the suspension is specially designed for air shocks where the air volume can be fine tuned to support the riders needs. The overall chain growth is only 31mm which means that you can use a clutched derailleur with no worries that it would make a big difference in suspension dynamics.



Glossary:

Wheelbase: The wheelbase is the distance between the centers of the front and rear wheels.

Head Angle: Angle of headtube in bicycle frame

Seat Angle: Angle of seattube in bicycle frame

Chainstay: The tube connect BB house with rear drop out

Bottom Bracket: The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely. It contains a spindle that the crankset attaches to, and the bearings that allow the spindle and cranks to rotate. The chainrings and pedals attach to the cranks. The bottom bracket fits inside the bottom bracket shell, which connects the seat tube, down tube and chain stays as part of the bicycle frame.

Chain Growth: The term 'chain growth' refers to the distance between the bottom bracket and rear axle lengthening as the bike goes through its travel.


Source:
http://www.mbr.co.uk/reviews/29er-full-suspension-bikes/pole-evolink-140-29-tr-review
http://www.bikeradar.com/mtb/news/article/pole-evolink-140-first-look-weight-spec-pricing-46031/
http://singletrackworld.com/2015/12/pole-posit-the-slackest-29in-trail-bike-yet/
http://www.pinkbike.com/news/pole-presents-the-new-school-of-mtb.html
https://en.wikipedia.org/wiki/Wheelbase
http://www.pinkbike.com/news/Tech-Tuesday-Chain-Length-Basics-2012.html


Ride On!




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