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Thermosstat
- Thread starter JerryB
- Start date
Big Arm
New member
Chupaca
New member
Not sure..!!
but don't think you have a choice on thermostats. They are set to open when engine is warmed up. Controling the fan should not be a problem. You can also adjust or change your coolant. I run 75% water and 25% cooland with water wetter. Mind you we don't have freezing temps. My RS runs at 5 bars in warm to hot temps and 3 or 4 bars in cooler weather. When was the last time you changed your coolant...?? :thumbup:
but don't think you have a choice on thermostats. They are set to open when engine is warmed up. Controling the fan should not be a problem. You can also adjust or change your coolant. I run 75% water and 25% cooland with water wetter. Mind you we don't have freezing temps. My RS runs at 5 bars in warm to hot temps and 3 or 4 bars in cooler weather. When was the last time you changed your coolant...?? :thumbup:
JerryB
New member
Hi Gene,
Re: When was the last time you changed your coolant...??
I haven't; the Spyder only has 7200 miles on it.
About 10-12 days ago, in very hot weather ( for here, ~ 95* ) and in stop-n-go traffic, it got to 8 bars, went into Limp-Home with Check Engine Light on.
I finally found a place to stop & pull over to let it cool. Took about 5 minutes and I was down to 5 bars; I was only 1 - 2 miles from home and made it OK. Check Engine Light did not come back on after about 30 minutes sitting in my garage; and never since.
I am a little gun-shy on high temps; I cooked a car engine many years ago when the idiot light did not come; no guage back in those days.
Another question: At about how many bars should the fan come on?
And re: I run 75% water and 25% cooland with water wetter
Are these machines fairly easy to change out the coolant and/or flush the cooling system?
I know, lots of questions; but that is why I joined this forum.
Thanks,
Jerry Baumchen
Re: When was the last time you changed your coolant...??
I haven't; the Spyder only has 7200 miles on it.
About 10-12 days ago, in very hot weather ( for here, ~ 95* ) and in stop-n-go traffic, it got to 8 bars, went into Limp-Home with Check Engine Light on.
I finally found a place to stop & pull over to let it cool. Took about 5 minutes and I was down to 5 bars; I was only 1 - 2 miles from home and made it OK. Check Engine Light did not come back on after about 30 minutes sitting in my garage; and never since.
I am a little gun-shy on high temps; I cooked a car engine many years ago when the idiot light did not come; no guage back in those days.
Another question: At about how many bars should the fan come on?
And re: I run 75% water and 25% cooland with water wetter
Are these machines fairly easy to change out the coolant and/or flush the cooling system?
I know, lots of questions; but that is why I joined this forum.
Thanks,
Jerry Baumchen
AF1 does make a lower temp thermostat for the Aprilia RSV that would also work on the spyder. However, I think I'd start with some normal maintenance and verifying that your oem Stat is opening. My Stat stuck open last year. Noticed it over the winter when I was seeing 0-1 bars while cruising. It's only a $40 piece and pretty easy to swap.
Sent from my SCH-I545 using Tapatalk
Sent from my SCH-I545 using Tapatalk
Bob Denman
New member
Do you have some contact information, and a part number for that thermostat? :thumbup:
And you're right; make sure that the system is right, before throwing strange parts at it!
( Damn... another :agree:... :banghead
And you're right; make sure that the system is right, before throwing strange parts at it!
( Damn... another :agree:... :banghead
JerryB
New member
Hi DrewNJ,
Re: verifying that your oem Stat is opening.
My thinking is that since I am 'normally' at 5 bars ( 6 yesterday ) that it is opening/closing OK.
If they stick open you will run cold ( as you mentioned ), if they stick closed you will run very, very hot until something goes BOOM.
I just want it to open at a lower temp to keep things cooler.
I'll look into that Aprilla stat; thanks,
Jerry Baumchen
Re: verifying that your oem Stat is opening.
My thinking is that since I am 'normally' at 5 bars ( 6 yesterday ) that it is opening/closing OK.
If they stick open you will run cold ( as you mentioned ), if they stick closed you will run very, very hot until something goes BOOM.
I just want it to open at a lower temp to keep things cooler.
I'll look into that Aprilla stat; thanks,
Jerry Baumchen
jcthorne
Well-known member
Is your fan working correctly and is it clear of debris? Is the air blowing off of it HOT?
Is you coolant full?
The thermostat actually opens at about 3 bars on the scale. 5 bars is approx the temp the fan cycles on and off. It maintains that temp on hot days with the thermostat fully open. On cold days when the fan is not needed, it will maintain about 3 bars on the gauge. A lower temp thermostat will not lower the warm weather operating temp of the Spyder.
Is you coolant full?
The thermostat actually opens at about 3 bars on the scale. 5 bars is approx the temp the fan cycles on and off. It maintains that temp on hot days with the thermostat fully open. On cold days when the fan is not needed, it will maintain about 3 bars on the gauge. A lower temp thermostat will not lower the warm weather operating temp of the Spyder.
JerryB
New member
Hi jcthorne,
Re: Is your fan working correctly and is it clear of debris?
I do not know if it is working correctly; I need to check this.
It is clear of debris.
Re: Is the air blowing off of it HOT?
This is also something I need to check.
Re: Is you coolant full?
Yes, it is.
Re: 5 bars is approx the temp the fan cycles on and off.
Thank you for that info.
Re: On cold days when the fan is not needed, it will maintain about 3 bars on the gauge.
What would you call a 'cold day?' Just wondering so that we are talking the same things.
Re: A lower temp thermostat will not lower the warm weather operating temp of the Spyder.
I will never say that I know everything about anything; but why do you say a lower temp stat will not lower the operating temp?
To me, this is two of the features that a stat is designed to do; one being to stay closed until a pre-determined operating temp is reached & then to open ( as needed ) and then to maintain that operating temp.
And thanks for your thoughts; they are all welcome - from all of you on here,
Jerry Baumchen
Re: Is your fan working correctly and is it clear of debris?
I do not know if it is working correctly; I need to check this.
It is clear of debris.
Re: Is the air blowing off of it HOT?
This is also something I need to check.
Re: Is you coolant full?
Yes, it is.
Re: 5 bars is approx the temp the fan cycles on and off.
Thank you for that info.
Re: On cold days when the fan is not needed, it will maintain about 3 bars on the gauge.
What would you call a 'cold day?' Just wondering so that we are talking the same things.
Re: A lower temp thermostat will not lower the warm weather operating temp of the Spyder.
I will never say that I know everything about anything; but why do you say a lower temp stat will not lower the operating temp?
To me, this is two of the features that a stat is designed to do; one being to stay closed until a pre-determined operating temp is reached & then to open ( as needed ) and then to maintain that operating temp.
And thanks for your thoughts; they are all welcome - from all of you on here,
Jerry Baumchen
JerryB
New member
Hi folks,
I just ran into downtown and it stayed at 5 bars. It is now 92* here.
The fan is definitely working.
Does anyone know what temp the sensor trips the fan to come on at?
And what temp does it go off at?
Hey, as long as I am asking why not go for broke? :yes:
Does anyone know what the standard ( or only ) thermostat for Spyders are set at, i.e., at what temp do they open up at?
Stats usually are defined by a temp number.
Once I know some of this, I can begin to have a decent conversation with the Aprilia dealer on what they carry/can supply.
Thanks,
Jerry Baumchen
I just ran into downtown and it stayed at 5 bars. It is now 92* here.
The fan is definitely working.
Does anyone know what temp the sensor trips the fan to come on at?
And what temp does it go off at?
Hey, as long as I am asking why not go for broke? :yes:
Does anyone know what the standard ( or only ) thermostat for Spyders are set at, i.e., at what temp do they open up at?
Stats usually are defined by a temp number.
Once I know some of this, I can begin to have a decent conversation with the Aprilia dealer on what they carry/can supply.
Thanks,
Jerry Baumchen
The thermostat does not always open fully and stay open once hot. It cycles towards open and closed to maintain temp, constantly adjusting.
With that being said, the Aprilia guys pretty much say don't waste your time to swap to a lower stat.
Sent from my SCH-I545 using Tapatalk
With that being said, the Aprilia guys pretty much say don't waste your time to swap to a lower stat.
Sent from my SCH-I545 using Tapatalk
Last edited:
JerryB
New member
Hi DrewNJ,
My experience with stats is with car stats and many years ago. I have not changed one in at least 30 yrs.
From what I knew then ( and I think most car stats are about the same today ), is that you can buy them for some XX* temperature. It was not uncomman back then to buy a hotter or cooler stat depending on what your car was doing or what you wanted it do.
Re: The thermostat does not always open fully and stay open once hot. It cycles towards open and closed to maintain temp, constantly adjusting.
With car stats, they only adjust ( move the butterfly ) if the water temp changes.
Do you know if the stats in Spyders are of similar construction? Just wondering so as to learn more about all of this.
Re: the Aprilia guys pretty much say don't waste your time to swap to a lower stat.
It would be nice to know what their reasoning is. I readily admit I know nothing about the stats in Spyders/Aprilia as I have never seen one.
Thanks for your inut,
Jerry Baumchen
My experience with stats is with car stats and many years ago. I have not changed one in at least 30 yrs.
From what I knew then ( and I think most car stats are about the same today ), is that you can buy them for some XX* temperature. It was not uncomman back then to buy a hotter or cooler stat depending on what your car was doing or what you wanted it do.
Re: The thermostat does not always open fully and stay open once hot. It cycles towards open and closed to maintain temp, constantly adjusting.
With car stats, they only adjust ( move the butterfly ) if the water temp changes.
Do you know if the stats in Spyders are of similar construction? Just wondering so as to learn more about all of this.
Re: the Aprilia guys pretty much say don't waste your time to swap to a lower stat.
It would be nice to know what their reasoning is. I readily admit I know nothing about the stats in Spyders/Aprilia as I have never seen one.
Thanks for your inut,
Jerry Baumchen
bmccaffrey
New member
I think on a modern day fuel injected vehicle running cooler is not always better. Concerns of over cooling causing the ecu to go into open loop, carbon buildup, sludge, etc etc.
It's something that if you only ride in hot weather then you'll likely be fine, but if you ride on a cooler day or in the cold you may have issues.
I think on the Aprilia bikes they struggle to cool to begin with, so having the thermostat open earlier doesn't really accomplish anything as they heat up anyway. Dunno if the spyder is capable of over cooling in the heat. It will over cool in weather below 50 for sure though. I do wonder if the AF1 lower temp stat would push the spyder into open loop when riding in the cold.....
The thermostats are the same physically, but the thermostat itself is within a plastic housing. You'd swap the entire housing.
Sent from my SCH-I545 using Tapatalk
It's something that if you only ride in hot weather then you'll likely be fine, but if you ride on a cooler day or in the cold you may have issues.
I think on the Aprilia bikes they struggle to cool to begin with, so having the thermostat open earlier doesn't really accomplish anything as they heat up anyway. Dunno if the spyder is capable of over cooling in the heat. It will over cool in weather below 50 for sure though. I do wonder if the AF1 lower temp stat would push the spyder into open loop when riding in the cold.....
The thermostats are the same physically, but the thermostat itself is within a plastic housing. You'd swap the entire housing.
Sent from my SCH-I545 using Tapatalk
JerryB
New member
Hi DrewNJ,
Thank You for your thoughts. I do appreciate everyone's thoughts.
I am only trying to get to run at about 4 bars on average. It might be a futile/you cannot go there thingy. :banghead:
I will be talking to the closest Aprilia dealer in a few days.
I sent a message to BRP asking about what the standard/stock thermostat is set at; time will tell.
If I change it out, I'll let you folks know.
Jerry Baumchen
Thank You for your thoughts. I do appreciate everyone's thoughts.
I am only trying to get to run at about 4 bars on average. It might be a futile/you cannot go there thingy. :banghead:
I will be talking to the closest Aprilia dealer in a few days.
I sent a message to BRP asking about what the standard/stock thermostat is set at; time will tell.
If I change it out, I'll let you folks know.
Jerry Baumchen
opcorn:
Texmac1011
New member
Temp vs Bars
Here is a post from 2009 by Lamonster showing temp related to the number of bars. As you will see, 5 bars (when the fan kicks in) is about 197 degrees.
http://www.spyderlovers.com/forums/...e-with-bar-readings&highlight=lamonster+gauge
Here is a post from 2009 by Lamonster showing temp related to the number of bars. As you will see, 5 bars (when the fan kicks in) is about 197 degrees.
http://www.spyderlovers.com/forums/...e-with-bar-readings&highlight=lamonster+gauge
JerryB
New member
Hi coz,
Re: I think you're trying to fix a problem that doesn't exist.
At the end of the day, you might be correct. As mentioned up thread, it went into Limp Home at about 8 bars or so and that sort of freaked me out. And I just prefer things to run cooler as a safety buffer.
Given enough time, I will probably just get used to seeing the 5 bars. :dontknow:
Re: It is interesting though. Let us know what you come up with.
I'll keep all of you posted if I make any changes; and what the results are.
Jerry Baumchen
Re: I think you're trying to fix a problem that doesn't exist.
At the end of the day, you might be correct. As mentioned up thread, it went into Limp Home at about 8 bars or so and that sort of freaked me out. And I just prefer things to run cooler as a safety buffer.
Given enough time, I will probably just get used to seeing the 5 bars. :dontknow:
Re: It is interesting though. Let us know what you come up with.
I'll keep all of you posted if I make any changes; and what the results are.
Jerry Baumchen
JerryB
New member
Hi Texmac1011,
Re: As you will see, 5 bars (when the fan kicks in) is about 197 degrees.
http://www.spyderlovers.com/forums/...e-with-bar-readings&highlight=lamonster+gauge
That was a most informative read. I'll see what the Aprilia dealer has to say/offer in the way of stats.
Jerry Baumchen
Re: As you will see, 5 bars (when the fan kicks in) is about 197 degrees.
http://www.spyderlovers.com/forums/...e-with-bar-readings&highlight=lamonster+gauge
That was a most informative read. I'll see what the Aprilia dealer has to say/offer in the way of stats.
Jerry Baumchen
jcthorne
Well-known member
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What you do not get here is there are 2 thermostats. A mechanical valve in the coolant (the one you are thinking of) and an electrical one that controls the fan. They operate at different temperatures. Once the mechanical valve opens, if there is not sufficient air flow across the radiator the temp will continue to rise until the fan cuts on. The coolant temp will then stay around the fan on/off temp with the coolant stat wide open. This is exactly what is happening on warm days when your gauges is at 5 bars.
The coolant stat really only helps warm the engine and maintain a minimum temp on cold days when the fan is not needed. Cold day is relative and depends on how fast you are going to create air flow.
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