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Message started by verslagen1 on 02/17/13 at 14:57:04

Title: Temperature gage
Post by verslagen1 on 02/17/13 at 14:57:04

I'm trying one of these as a oil temp gage...

http://www.trailtech.net/media/catalog/product/cache/1/small_image/135x/9df78eab33525d08d6e5fb8d27136e95/b/l/blackTTO_degf_15.jpg

The cable is a little short as I've attached it to the forward facing oil port.
The 14mm size fits tightly on the plug.

Even on a cold morning it's reading 197°F and 209°F on the way home.

This mornings run got it up to 220°F mainly cause there was no traffic and I ran 75/85 all the way.
I was wondering if it got that high cause the oil was on the lower mark so I ran 70 back home and it was more or less normal 200°F

Once I lengthen the cable, I'll paint it black and stick it on the backside of the flyshield for an indiscreet gage. Got a 12mm ordered for the head too, but might have to grind a little relief to one side of the spot face for the sparkplug to give the ear for the cable a little room.

Title: Re: Temperature gage
Post by Digger on 02/17/13 at 19:23:49

Ver,

Interesting.....lookin' forward to your data!

Title: Re: Temperature gage
Post by Dave on 02/18/13 at 05:06:32

Verslagen1:

I am about to order a Vipertech and it has a temperature sensor for the spark plug.....but that seems like an inconvenient place for the sensor to be from now on. I was thinking about putting it under one of the cylinder stud bolts on the right side. They hvae a big copper washer under the nut - and I could just put the senser under one of those washers.

My other option is to just replace the cylinder head sensor with one of their oil sensors.

Title: Re: Temperature gage
Post by Gyrobob on 02/18/13 at 06:14:24

You might try sticking the sensor end in some lightly boiling water to sort of calibrate it. I have not had very good luck with the accuracy of these kinds of things, even with stuff that was supposed to be aircraft quality.

Title: Re: Temperature gage
Post by verslagen1 on 02/18/13 at 07:26:31

yep, I could do that, but how would I adjust?

I am fairly pleased that it shows ambient temp correctly.

Title: Re: Temperature gage
Post by Dave on 02/18/13 at 08:22:57

5B485F5E414C4A48431C2D0 wrote:

yep, I could do that, but how would I adjust?

I am fairly pleased that it shows ambient temp correctly.

I don't think you can make any adjustment - But it would show that the gauge is accurate at 212 degrees, which is near the range at which it will be operating.

I suppose like most gauges it will give you a sense of security to see that things are....."normal" once you get used to the range it operates in. And when things get outside of "normal".....then you can react accordinaly.
(In the movies....the first thing they do is take their index finger and "tap" repeatedly on the gauge). :o

Title: Re: Temperature gage
Post by Gyrobob on 02/18/13 at 10:44:00

"I don't think you can make any adjustment - But it would show that the gauge is accurate at 212 degrees, which is near the range at which it will be operating."

that's what I was going to say,...

Title: Re: Temperature gage
Post by paulmarshall on 02/18/13 at 11:04:31

I had trouble fitting my sensor to the spark plug. The copper rod that connects to the copper washer that goes arround the spart plug is too fat. I first connected it to one of the head bolts. It does give a lower and slower heat reading, but once you know what a normal head temp is you can use that as a base.
I did mod mine with some copper so now it is measuring heat from the spark plug.

Title: Re: Temperature gage
Post by rfw2003 on 02/18/13 at 12:04:08

The TrailTech Vapor speedo/tach has the option to use an actual temp sensor, which is what I did. I put it in the front port that is blocked off with the socket head plug. The highest I ever got in the summer which was on a 105°F day was 253°F oil temp and yes I did test the accuracy of the sensor with boiling water, and it was spot on.

R.F.