The Sunflower Pump
The Sunflower Pump
Product Development Timeline
Nov. 2014
Shipment to Nepal
Dec. 2014
This is an overview of design changes due to user feedback.
Design Changes
Main issues reported
Shipment to Nepal
1.0 Feedback & Development
1.1
1.1
1.1
Field Feedback
Manufactured
• Limited 1.5” suction hose • Bottoming out of the piston • Air leakage • Request axillary power • Flywheel loosening • Solar panels broke in shipment • Cracked cylinder head shipment • No tools included • Too short of a power cord • Loose pressure relief plug • Poor fitting pressure relief valve • Play in Yoke fitting • Worn power switch
Shipment to Honduras
Feb. 2015
Shipment to Honduras
April 2015
Version 1.2 - (Oct 2014-Dec 2014) • Plastic parts produced via injected mold • Photovoltaic panel was redesigned to give variable voltage to the motor allow for easier speed change • Keyway added to flywheel • Powdered coating of the frame and flywheel • Improved stuffing box • Added charging port on solar panel
1.3
Manufactured
Version 1.3 - (Dec 2014-Mar 2015) • Improved air vessels • Improved motor • More robust power connectors & longer power cord • Pipe kit included in system • Improved packaging
1.3
Field Feedback
• Durability of elastics • Worn cylinder • Cam Plate breaking • Stuffing box leakage • Untrue flywheel • Oversized flywheel band
Shipment to Zambia
May 2015
Shipment to Zambia
July 2015
1.3
1.4 1.4
Manufactured
Version 1.4 - (Mar 2015-Sep 2015) • Tapered main shaft on flywheel • Improved motor bracket • UV resistant rubber components • Improved knobs
Field Feedback
• Bad inlet and outlet threads • Misalignment on motor and flywheel • Cracked flywheel • Bent Shaft • Breaking Check valve spring • Rapid wear on flywheel • Misalignment on motor and flywheel
Shipment to Zambia
Sept. 2015
Shipment to Nepal
Dec. 2015
Shipment to Honduras
April 2016
Shipment to Nepal
May 2016
Shipment to Zambia
May 2016
Shipment to Nepal
June 2016
Shipment key testing stage sales stage
1.4
Manufactured
1.4 1.4
1.5
Version 1.5 - (Sep 2015 - Present) • New frame developed designed to protect pump during shipment • Forged crank plate and shaft • Simplified crank plate settings • Simpler switch on Panel • Improved check valve
1.5
1.5 1.5
1.5
Version 2.0 - Future 2016 • New yoke design • Increase system voltage • Reduced pump weight by 30%
All product feedback and changes as of 07/19/2016
Product Development Timeline
Nov. 2014
Shipment to Nepal
Dec. 2014
This is an overview of design changes due to user feedback.
Design Changes
Main issues reported
Shipment to Nepal
1.0 Feedback & Development
1.1
1.1
1.1
Field Feedback
Manufactured
• Limited 1.5” suction hose • Bottoming out of the piston • Air leakage • Request axillary power • Flywheel loosening • Solar panels broke in shipment • Cracked cylinder head shipment • No tools included • Too short of a power cord • Loose pressure relief plug • Poor fitting pressure relief valve • Play in Yoke fitting • Worn power switch
Shipment to Honduras
Feb. 2015
Shipment to Honduras
April 2015
Version 1.2 - (Oct 2014-Dec 2014) • Plastic parts produced via injected mold • Photovoltaic panel was redesigned to give variable voltage to the motor allow for easier speed change • Keyway added to flywheel • Powdered coating of the frame and flywheel • Improved stuffing box • Added charging port on solar panel
1.3
Manufactured
Version 1.3 - (Dec 2014-Mar 2015) • Improved air vessels • Improved motor • More robust power connectors & longer power cord • Pipe kit included in system • Improved packaging
1.3
Field Feedback
• Durability of elastics • Worn cylinder • Cam Plate breaking • Stuffing box leakage • Untrue flywheel • Oversized flywheel band
Shipment to Zambia
May 2015
Shipment to Zambia
July 2015
1.3
1.4 1.4
Manufactured
Version 1.4 - (Mar 2015-Sep 2015) • Tapered main shaft on flywheel • Improved motor bracket • UV resistant rubber components • Improved knobs
Field Feedback
• Bad inlet and outlet threads • Misalignment on motor and flywheel • Cracked flywheel • Bent Shaft • Breaking Check valve spring • Rapid wear on flywheel • Misalignment on motor and flywheel
Shipment to Zambia
Sept. 2015
Shipment to Nepal
Dec. 2015
Shipment to Honduras
April 2016
Shipment to Nepal
May 2016
Shipment to Zambia
May 2016
Shipment to Nepal
June 2016
Shipment key testing stage sales stage
1.4
Manufactured
1.4 1.4
1.5
Version 1.5 - (Sep 2015 - Present) • New frame developed designed to protect pump during shipment • Forged crank plate and shaft • Simplified crank plate settings • Simpler switch on Panel • Improved check valve
1.5
1.5 1.5
1.5
Version 2.0 - Future 2016 • New yoke design • Increase system voltage • Reduced pump weight by 30%
All product feedback and changes as of 07/19/2016
