Rammer and Gulper analysis

	Rammer	Gulper
1.      Removing sludge from depth of the pit	Rammer Foot stool can be adjusted along the fixed strut without being restricted by the outlet pipe hence it can go deeper into the pit.	Gulper outlet pipe restricts the adjustment of foot stool to certain depth as its outlet pipe does not enter into the pit.
2.      External rods	It has two external rods which make pumping easier as the force is divided between the rods.	In this case, the plunger is used which is inside the rising pipe. The pumping force is concentrated in the plunger and pumping tends to be difficult.
3.      Output	Rammer pumps more sludge than gulper  at a given time hence greater output	Lower output than rammer
4.      Cleaning	The rammer component parts can easily be disassembled and cleaned thoroughly well	The gulper parts are internal which makes cleaning cumbersome and parts are normally not cleaned well
5.      Cost	The materials for rammer construction are somehow more expensive like steel pipes cost higher than PVC. (200 dollars)	The material for gulper construction is mainly PVC pipe which costs less than steel (160 dollars)
6.      Durability	The Rammer is mainly constructed using metallic hence more durable than gulper. PVC outer pipe can easily be replaced when damaged.	Gulper is less durable as it’s made up of mainly PVC pipe.

Rammer with peddle mechanism

The aim of the peddle mechanism is to make pumping easy as the rammer enters deeper into the pit. The thigh muscles are strong enough to provide the power requirement needed to pump out sludge. Issues to be considered; ·         To make fixed strut adjustable to permit pumping at different heights. ·         To put provision of a holder to enable peddler stay firm while peddling ·         Seat to be adjustable to cater for people of different heights.

 Figure 1: Rammer with peddle mechanism