Recent content by romartin

Thank you Eric and John for your compliments. John, what is the tool for combining PDFs?

MY TRIPLE WOBBLER INTRODUCTION This post briefly describes some aspects of the design and building of a three cylinder, double acting oscillating engine which I have just finished. The idea to make a triple wobbler came from a post I well recall enjoying on HMEM about a year ago but which now...

Beautiful engine beautifully made! Bravo!

What an interesting design Mirek! Well done!

Well done Mirek! You have made a very attractive engine!

What an unusual model! Well done Tony!

Thank you Mirek!

Thank you Chiptosser and John for your compliments which I appreciate very much!

INTRODUCTION This post briefly describes a model Kimble Engine which I have just finished building. The inspiration to try a Kimble build came from Arnold's masterly build of Elmer's Kimble documented in a thread started in November 2011, and which I discovered in Nov 2015. Here are a few photos...

Thank you Arnold for this masterly build and its build log, which I discovered in November and which inspired me to try a Kimble build myself.

Hello Dave, As a matter of fact I did consider pumping some fluid against gravity as a way of providing a measurable load for small engines. In the end I plumped for the Seller Dynamometer technique for three reasons. The fact that Seller’s idea gets enthusiastic recommendation in...

AN INSTRUMENT FOR MEASURING THE POWER DELIVERED BY SMALL ENGINES FIRST USE EXPERIENCE Set up and Approach For the first serious attempt to measure the performance of an engine I chose the two cylinder engine I completed a year ago, the build log of which is on this forum. The diagram...

AN INSTRUMENT FOR MEASURING THE POWER DELIVERED BY SMALL ENGINES THE PRESSURE SENSOR Following advice received from several HMEM members I ordered a Honeywell TruStability series sensor from Mouser. These are piezo-resistive silicon pressure sensors with integrated electronics to provide...

AN INSTRUMENT FOR MEASURING THE POWER DELIVERED BY SMALL ENGINES THE INSTRUMENT HARDWARE The instrument is composed of a wooden base and four main assemblies: Rocker Assembly and Springs Trolley Assembly Wheel Assembly and Base Calibration Accessory Rocker Assembly and Springs This...

AN INSTRUMENT FOR MEASURING THE POWER DELIVERED BY SMALL ENGINES INTRODUCTION This thread briefly presents an instrument I have developed during the last year to try to measure the delivered power of the small steam engines I have built over the years. I took the basic idea for the instrument...