Subject:    Re: Digital Rotary Compression Tester
From:   r.j.smith@dl.ac.uk (Rob. Smith)

Thanks for the response

In actual fact, I've built myself a handheld battery operated device.
I did it to test the compressions on my Ro80. This device includes the
transducer part. I'm interested in how the Mazda unit works since I
don't want to copy how they've done it. My unit also measures the RPM.
The big thing is that my unit is a lot cheaper. It could sell easily
for less than $400 US. What I need to consider is whether to licence
the design to a local company, IF there is a demand for a cheaper
unit. I am not able to produce the unit myself commercially, although
production in 1's and 2's is possible. I'm in full time employment,
and don't really need the cash (gee did I say that, don't tell wifey),
and as always, there's a difference between proving you can do
something and going into mass production. I'm making one now to give
to my local Mazda Rx7 specialist (and general all round nice guy) to
'field test'. Maybe that'll provide the information I need.

Thanks again...  Rob.

"Wim Vanhoeck" <wim.vanhoeck@nospam.advalvas.be> wrote:

Hello,

The mazdatrix tester is the genuine Mazda tester. It is made by Kowa Seiko
(sp?).
I have both an analog and a digital tester myself and I have played with the
idea to build a PC based rotary compression tester.
The most important part of the digital tester is the device that hooks up to
the spark plug hole. It converts the engines air pulses into electrical
current.
It is this part that would be required to be able to build such a tester.
While the analog tester uses the air pulses to draw a line on a piece of
paper, the air pulse is immediately converted to current on the digital
tester.
The digital one also measures the rpms.

Wim, Belgium.

Rob. Smith wrote in message <397d576a.6797136@news.freeserve.co.uk>...

Hello
I'm interested in the digital rotary compression tester that Mazdatrix
are listing on their site. From inspection (and use of a little image
enhancement that computers are so good at these days), I believe the
unit they are offering is a pucker Mazda device. Am I correct here??.
Does anyone know of any other such electroinc devices for measuring
the rotary compression, that separates out the readings into three. I
have access to an original 'MotorMeter' device, and a genuine Mazda
'Tickatape' unit. What I'd like is more info on the electronic
devices.
In addition, I note the device seems to cost a lot of money ($1500).
What would you guys reckon would be a more reasonable cost for a
similar device to the Mazda one on offer.
Any info welcome.

Rob.

Marc Wiese 20B in something this way comes.....

 
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