Oil / Fuel In Manifold Pressure Guage

Re: Oil / Fuel In Manifold Pressure Guage

by MARK JACKSON » 13 years ago

MARK JACKSON

12 332 11

Without sounding toooo thick, what is a bourdon tube, I have never heard of one.

Cheers Mark

Re: Oil / Fuel In Manifold Pressure Guage

by Roger Lee » 13 years ago

Roger Lee

131 5.38k 5.44k

The bourdon tube is a metal "C" shaped tube and kind of flat and hollow tube inside the gauge. Depending on the gauge application it may be made out of different metals. A brass allow is common. It will flex when pressure or vacuum is applied inside the gauge. The gauge needle is attached and when the tube expands or contracts it moves the needle on the face of the gauge.

---

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

Re: Oil / Fuel In Manifold Pressure Guage

by MARK JACKSON » 13 years ago

MARK JACKSON

12 332 11

Ahh I understand, I have never looked inside one, you learn something new every day.

Thanks for that

Mark

Re: Oil / Fuel In Manifold Pressure Guage

by Mike Goodrich » 13 years ago

Mike Goodrich

8 123 0

P Reino and Tony
Are these UMA gauges? If so they do not have a bourdon tube but a diaphragm and there's no oil in them (quote from UMA).
Mike

Re: Oil / Fuel In Manifold Pressure Guage

by Tony Garrett » 13 years ago

Tony Garrett

20 37 11

Mike
My MP gauges are made by UMA.
Tony