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SideRiser Height Adjuster



Chapman know that a bus driver seat operates within one of the most harsh environments of any industry with most vehicles having multiple drivers per day running 24/7 all year round. A mechanism operating in this environment will inevitably wear over time and components can fail. So when we set about designing the next generation of seat height adjuster we wanted a unit that would be fail-safe.

Fail-safe design

The unit is designed so that if a component fails it will not cause undue damage. Component failure modes were reviewed and safety design features were added to ensure that if the unit were to fail, it would do so safely.

Ergonomics and Comfort

The positioning of the height adjusting handles was important. They are positioned each side of the seat within easy reach of the driver regardless of the seat position.

Maintainability

Maintaining the mechanism is now easier than ever. Lubrication of all moving parts can be conducted without removing any other part.

Testing

To ensure that the mechanism was up to the job, accelerated life testing has been completed at Millbrook Proving facility in Bedfordshire. Accelerated life testing was specified as 190Kg driver, four seat adjustments per day, 20 hours use per day, 7 days per week, 52 weeks per year, for five years. Post testing the seat was subjected to multiple 7.3G vertical pulses with a 30st driver - the seat did not fail.

The SideRiser shares the same fixing-hole centres as current Chapman seats and Height Adjusters for ease of fitment.

SideRiser Height Adjuster
NovaUrban trimmed in E-Leather part number for Left Hand 72511

SideRiser Height Adjuster
72500 SideRiser




L/H PART No. STANDARD PART No. TYPE / DESCRIPTION MIN MAX A B C D SLIDER SET PART-No.
71510 71500 SIDERISER HEIGHT ADJUSTER
(160mm SLIDES)
130 240 305 290 304 255 28974/5-R
72510 72500 SIDERISER HEIGHT ADJUSTER
(200mm SLIDES)
130 240 305 290 304 255 28974/5-RL2
71511 71501 SIDERISER HEIGHT ADJUSTER WITH
GAITER (160mm SLIDES)
130 240 305 290 304 255 28974/5-R
72511 72501 SIDERISER HEIGHT ADJUSTER WITH
GAITER (200mm SLIDES)
130 240 305 290 304 255 28974/5-RL2
71510 71100 SIDERISER HEIGHT ADJUSTER
(160mm SLIDES)
130 240 305 290 304 215 28974/5-R
72510 72100 SIDERISER HEIGHT ADJUSTER
(200mm SLIDES)
130 240 305 290 304 215 28974/5-RL2
71511 71101 SIDERISER HEIGHT ADJUSTER WITH
GAITER (160mm SLIDES)
130 240 305 290 304 215 28974/5-R
72511 72101 SIDERISER HEIGHT ADJUSTER WITH
GAITER (200mm SLIDES)
130 240 305 290 304 215 28974/5-RL2


SideRiser Height Adjusted Exploded
Download the PDF

Exploded View


SideRiser Replacement Spindle/Trunnion Kit part number 91701K
To fit L/H and R/H adjustment type (part number 72501, 70001, etc)
SideRiser Replacement Spindle/Trunnion Kit part number 91711K
To fit L/H ONLY adjustment type (part number 72511, 70011, etc)


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