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Old 02-08-2011, 12:17 PM
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natemoen natemoen is offline
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volt and temp gauge?

Of you all that have one or both of these how did you wire them into the system?

Come on Cy, give me some useful info
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1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters

Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner

In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

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  #2  
Old 02-08-2011, 12:20 PM
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cywelchjr cywelchjr is offline
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Quote:
Originally Posted by natemoen View Post
Of you all that have one or both of these how did you wire them into the system?

Come on Cy, give me some useful info
Don't have one "YET" but I have my eye on a nice little LED unit. But the proper place to hook the gauge to is right at the battery, as that is the important place to be measuring voltage, just like when troubleshooting the charging system.
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1980 XS1100G (Brutus) w/81H Engine
Duplicolor Mirage Paint Job (Purple/Green)
Vetter Windjammer IV
Vetter hard bags & Trunk
OEM Luggage Rack
Jardine Spaghetti 4-2 exhaust system
Spade Fuse Box
Turn Signal Auto Cancel Mod
750 FD Mod
TC Spin on Oil Filter Adapter (temp removed)
XJ1100 Front Footpegs
XJ1100 Shocks

I was always taught to respect my elders, but it keeps getting harder to find one.
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  #3  
Old 02-08-2011, 12:21 PM
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cywelchjr cywelchjr is offline
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For a temp gauge, generally head temp is considered to be the key temp for air cooled engines. It's often the hottest area and where pre-ignition is going to come from (excessive temps). The problem is, that many temp gauges are intended for water cooled engines.
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1980 XS1100G (Brutus) w/81H Engine
Duplicolor Mirage Paint Job (Purple/Green)
Vetter Windjammer IV
Vetter hard bags & Trunk
OEM Luggage Rack
Jardine Spaghetti 4-2 exhaust system
Spade Fuse Box
Turn Signal Auto Cancel Mod
750 FD Mod
TC Spin on Oil Filter Adapter (temp removed)
XJ1100 Front Footpegs
XJ1100 Shocks

I was always taught to respect my elders, but it keeps getting harder to find one.
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  #4  
Old 02-08-2011, 12:22 PM
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DiverRay DiverRay is offline
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Volt meter goes onto a switched hot, one of the "spare" wires in the headlamp. Check with a VOM for 12V. ONLY when the ignition is on.
Temp on my old '78 was via special oil drain plug that had the sending unit built in.
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  #5  
Old 02-08-2011, 12:24 PM
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cywelchjr cywelchjr is offline
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Quote:
Originally Posted by DiverRay View Post
Volt meter goes onto a switched hot, one of the "spare" wires in the headlamp. Check with a VOM for 12V. ONLY when the ignition is on.
Temp on my old '78 was via special oil drain plug that had the sending unit built in.
Good point. I myself when I hook one in, am going to use a relay so I can read right off the battery but have it disconnected when the ignition is off.

I hadn't though of an oil temp gauge, but IMHO that's only half the story on an air cooled engine. Still need that head temp I think.
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Cy

1980 XS1100G (Brutus) w/81H Engine
Duplicolor Mirage Paint Job (Purple/Green)
Vetter Windjammer IV
Vetter hard bags & Trunk
OEM Luggage Rack
Jardine Spaghetti 4-2 exhaust system
Spade Fuse Box
Turn Signal Auto Cancel Mod
750 FD Mod
TC Spin on Oil Filter Adapter (temp removed)
XJ1100 Front Footpegs
XJ1100 Shocks

I was always taught to respect my elders, but it keeps getting harder to find one.
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  #6  
Old 02-08-2011, 12:24 PM
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natemoen natemoen is offline
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Ray, that's the kind of temp sensors i have seen, by I agree with Cy of the head temp is most important. Anyone have some ideas?
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KD9ARL

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1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters

Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner

In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

Theodore Roosevelt
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  #7  
Old 02-08-2011, 12:27 PM
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I really want to get a temp sensor in and then get a sense of normal temp. Then I want to put a cooler on with a bypass valve that I can turn on or off depending on weather and how I am riding that day and whatnot
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Nathan
KD9ARL

μολὼν λαβέ

1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters

Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner

In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

Theodore Roosevelt
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  #8  
Old 02-08-2011, 12:30 PM
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DiverRay DiverRay is offline
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Most Cyl head temps are taken with a washer that fits under a spark plug. There was a thread a few years ago about putting one under a head bolt.
HTH
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  #9  
Old 02-08-2011, 12:31 PM
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cywelchjr cywelchjr is offline
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Quote:
Originally Posted by natemoen View Post
I really want to get a temp sensor in and then get a sense of normal temp. Then I want to put a cooler on with a bypass valve that I can turn on or off depending on weather and how I am riding that day and whatnot
I can't say that I've really seen a need for a cooler. I've ridding in 115 temps here in the central valley, and I can't say mine has ever even acted even slightly over heated. It might be an issue in the LA area or such with those temps and parking lot traffic, but that's why Ca allows lane splitting.
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1980 XS1100G (Brutus) w/81H Engine
Duplicolor Mirage Paint Job (Purple/Green)
Vetter Windjammer IV
Vetter hard bags & Trunk
OEM Luggage Rack
Jardine Spaghetti 4-2 exhaust system
Spade Fuse Box
Turn Signal Auto Cancel Mod
750 FD Mod
TC Spin on Oil Filter Adapter (temp removed)
XJ1100 Front Footpegs
XJ1100 Shocks

I was always taught to respect my elders, but it keeps getting harder to find one.
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  #10  
Old 02-08-2011, 12:31 PM
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natemoen natemoen is offline
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Quote:
Originally Posted by DiverRay View Post
Most Cyl head temps are taken with a washer that fits under a spark plug. There was a thread a few years ago about putting one under a head bolt.
HTH
Interesting, I have not seen one like that. I will have to look for.that thread and do some searching.
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KD9ARL

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1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters

Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner

In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

Theodore Roosevelt
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  #11  
Old 02-08-2011, 12:33 PM
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cywelchjr cywelchjr is offline
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I believe those units use a thermister for their measurement. I think that 81xsproject has something like that on his FI machine, as the computer needs to know the temp for closed loop operation.

I think that at least at one time he just had it wedged into the fins on the head, but I could be misremembering.
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Cy

1980 XS1100G (Brutus) w/81H Engine
Duplicolor Mirage Paint Job (Purple/Green)
Vetter Windjammer IV
Vetter hard bags & Trunk
OEM Luggage Rack
Jardine Spaghetti 4-2 exhaust system
Spade Fuse Box
Turn Signal Auto Cancel Mod
750 FD Mod
TC Spin on Oil Filter Adapter (temp removed)
XJ1100 Front Footpegs
XJ1100 Shocks

I was always taught to respect my elders, but it keeps getting harder to find one.
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  #12  
Old 02-08-2011, 12:36 PM
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natemoen natemoen is offline
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I do remember him talking about that for his FI project but didn't know they had gauges of tje same sort. His was just values set in computer code as fat as I remember and not a gauge.
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KD9ARL

μολὼν λαβέ

1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters

Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner

In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

Theodore Roosevelt
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  #13  
Old 02-08-2011, 12:36 PM
crazy steve crazy steve is offline
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Quote:
Originally Posted by natemoen View Post
Ray, that's the kind of temp sensors i have seen, by I agree with Cy of the head temp is most important. Anyone have some ideas?
Head temp senders can be found on some late-model air-cooled EFI bikes, but these send a signal to the FI controller for mixture/timing purposes.

You might look and see what's offered in the VW Beetle market; I'm pretty sure I've seen 'temp' gauges. The trick is where to put it. These usually require a tapped 'well' to install the sensor into, so you have to find a place to do that, and is it the 'right' place to really tell you what you want to know?

Oil temp is nearly as useful (some say as useful), as the oil circulating helps carry heat away too. Keep your oil temps below 250 and you should be ok.
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  #14  
Old 02-08-2011, 12:57 PM
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natemoen natemoen is offline
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Interesting, I really don't want to put any holes in the head.
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KD9ARL

μολὼν λαβέ

1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters

Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner

In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

Theodore Roosevelt
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  #15  
Old 02-08-2011, 02:08 PM
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cywelchjr cywelchjr is offline
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Quote:
Originally Posted by natemoen View Post
Interesting, I really don't want to put any holes in the head.
I'll agree Nate, you don't need any more holes in your head.
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Cy

1980 XS1100G (Brutus) w/81H Engine
Duplicolor Mirage Paint Job (Purple/Green)
Vetter Windjammer IV
Vetter hard bags & Trunk
OEM Luggage Rack
Jardine Spaghetti 4-2 exhaust system
Spade Fuse Box
Turn Signal Auto Cancel Mod
750 FD Mod
TC Spin on Oil Filter Adapter (temp removed)
XJ1100 Front Footpegs
XJ1100 Shocks

I was always taught to respect my elders, but it keeps getting harder to find one.
Reply With Quote
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