Difference between revisions of "Ergonomics"
Latest revision as of 21:16, 23 June 2020
This covers ergonomic characteristics of Zero models and what adjustments various people have made.
- A good reference which has some Zero modeling is Cycle Ergo.
- How and Why We Measure Motorcycle Ergonomics
Standover height is the height of the seat when the bike is unloaded (but balanced upright).
There is a trend of models becoming shorter year by year from 2012-2014, after which the models' height stabilized through 2017.
Reducing Seat Height
- Has Anyone Lowered Their Zero Yet?
- Has Anyone Lowered Their Zero Yet? redux
- 2016 FXS Lowered Ride Height Ikon Shock, Dual Use Tires, Drop Bars, Hand Guards,
- 30mm rear lowering, the hard way (no loss of travel)
- Not enough third-party fitments are known for shocks or lowering links.
- Seat Solutions
- 2013 Zero FX and XU models offered an unlisted "low seat accessory" which reduced seat height by 2" (41mm).
- The Corbin Gunfighter seat for Zero is customizable and does provide easier leg reach to the ground in front, less than an inch by default.
- Carving out seat foam can be done with the stock seat to some extent (1 inch again?).
- If you do this, check the underside of the seat for flexing.
- High powered cables underneath should not be under load for any reason and this area needs to be reinforced by the "Y-bracket" or an equivalent that bolts across the frame sections there.
- Suspension Solutions
- See the aftermarket section on suspension.
- Front Fork
- (From a 2013 FX report) The front fork can be slid up in the clamp by one inch.
- Rear Shock
- For the rear, have a local shock repair / re-build for racing shop put a 3/4" spacer inside the shock, to stop its extension length by 3/4".
- Since it is about 2:1 lever ratio from the shock mount to the rear axle this would lower the rear of the bike by about 1 1/2".
Raising Seat Height
This is less commonly discussed.
- 2013+ Zero S Platform models all have the same (or nearly so) seat to footpeg distances.
- DS footpegs, because of their construction, actually offer less legroom than the S footpegs.
- A swap can be accomplished easily.
Shortening or changing the distance to the bars can be done by rotating the bars, adding risers, or installing a differently-shaped set of bars.
- Bars are 7/8" at the grips, but that tapers from 1 1/8" or 28mm at the stem, e.g. Protapers brand tapered handlebars at CycleGear, which come in various angles.
- S model bars typically have higher rise but are shorter and angled back.
- DS bars are wider, somewhat lower rise, and straighter.
- 2013-2014 shape differs from 2015+ shape.
- Are Zero seats comfortable?
The Zero stock seat is relatively flat/neutral, perhaps a few degrees angled forward.
The Zero cockpit is relatively short among motorcycle forms.
The instrument cluster is not typically visible when looking at the horizon from an upright position.
- Riding in a crouched position makes viewing the instrument cluster easier for some, but strains the neck and shoulders.
- The handlebars are at the same height, which means that a phone mount typically will not rise much higher than that into the rider's field of view.
- On 2012-2013 models, the Koso instrument cluster makes ignition access more difficult.
- These mirrors have adjustable pivots at the mirror ball with a set screw.
- The stalks are adjustable but have a relatively low possibility of raising their heights.
- Their angular shape does limit visibility somewhat; some flip the mirrors over to get a little more angular visibility.
- These mirrors have a fixed stalk that rises higher but is less adjustable.
- The mirror shape is more curved and generous, but with limited positioning can be a problem for some.
- The mirror mounting for 2011+ models is in the Yamaha family (left and right threaded opposite) so third-party options are not hard to find.
- Bar-end mirrors can be fitted easily, as one alternative.
- For early Gen2 models, this requires cutting holes in the grips at the bar ends.
- A sharp knife or single-edged razorblade works well for this.
- Blind spot add-on mirrors
- Dan Ponce > Zero Motorcycles Owners Group
- GreyJoy 2" x 2" Corner Wedge Blind Spot Mirror 15 Degree Angle Adjustable
I'm very happy with this 2nd set of blind spot mirrors. (The first set were chrome and I didn't like where I put them.) When I'm traveling straight and upright, the main mirrors are set so I can see just behind to the sides, slightly beyond my peripheral vision. The spot mirrors are tilted to see directly behind, without my elbows being in the way.