• Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

Another one Bites the Dust

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mag00 said:
I'll resurrect this for you Mark. The out and about topic has officially been hijacked by you after I commented on my ride. My comment about needing an extra fan did not require discussion, it was only an observation, like the sun is shining, we don't need to discuss the earth orbit and such.

In your picture you have alot of grunge. Where is that coming from? If it is on the plastic in the radiator, it must be on the inside of your engine too. I see why you may be having thermostat issues in this photo. You still need the thermostat to keep your engine as healthy as possible. And yes, over cooling is less damaging than over heating. Shouldn't have to say it.



Same as I shouldn't have to talk about pressure and the effect of containing the steam. WATER BOILS AT 100º C (212º F).

Adding glycol or any other solution to water does not change the boiling point, ever hear of distillation? Yes, that is how we extract water out of a solution of water and something else.

Pressure will contain the steam and/or vapor from expanding out into the atmosphere. But make no mistake, it is still at boiling temperature,which is a bit warm for the engine. The fan needs to come on BEFORE boiling temperature (100º C) so when the t-stat is open, it is taking cooler liquid into the engine. If the coolant flows too fast through the material being cooled, there may not be an efficient transfer of heat, depending on the coefficient of the coolant. Water is just about the best, but water does not have any anti corrosive or anti freezing properties. Yes, water freezes at 0º C (32º F)

Now I surely did not think I had to explain this to the guys here, I figured you were smart enough to know that creating a closed system and pressurizing it will allow you to take water past boiling temperature and not loose it (water) to atmosphere. Do you really think anybody here is that un educated about engines and cooling? Maybe so, because you don't seem to think a thermostat is needed in a liquid cooled motor.

Just depends on how nice you want to treat you motor. Let the grunge and sludge build up within all you want. Run it at any temperature you want, it's your bike.

For others who wish to take care of their bikes in a professional manner, use a good coolant, use a thermostat, and add the auxiliary fan for slow technical driving in hot conditions. The stock system works if you keep it clean. The design is fine, it is the implementation of some of the parts that lack durability, and the setting the fan is supposed to come on at is too high.
Click to expand...
These things you are warning everyone about happening if they don't run a thermostat don't have anything to do with running a thermostat. Corrosion in the cooling system has to do with the PH of the coolant not the temperature, although a higher temp might accelerate corrosion. If it's oil sludge you're warning about then it is likely due to neglect of not changing oil which would be a cause compounded by higher temperature. The thermostat does help the engine warm up faster and meet emission standards easier because it can be ran leaner and hotter, neither of which helps performance or longevity. A thermostat would be a benefit if you were ice racing or operating your bike in extreme cold conditions at high speeds other than that it's another problem waiting to happen and a restriction in extreme heat conditions when you need the coolant flow the most.
 
mag00 said:
Your Assignment read:

http://ae-plus.com/milestones/sergi...-to-improve-engine-efficiency-and-reliability


Reliability and performance, Care to discuss why that would not be relevant to our engines of today?
Click to expand...
You understand that EFI systems are capable of adjusting to different conditions hundreds of times a second and if programmed correctly do not need a thermostat. However I suggest that based on your above 1930s thermostat data and your previous posts you probably need to and should run a thermostat in everything you own for your own piece of mind. I've been a master tech mechanic and machinist (which means I'm ASE certified in every category of mechanics and automotive machining) for over 30 years and professionally built and raced cars or motorcycles during the entire 30+ years of my career and so far no high performance machine car or motorcycle I've ever built or raced has had the need for a thermostat. Others who have raced and pushed their bikes to the limits have also weighed in on this thread and have given some good reasons to delete the thermostat. I prefer not to argue for the sake of arguing, information and experience has been shared in this thread for anyone to make a decision that works for their needs without me weighing in.
 
mag00 said:
I'll resurrect this for you Mark. The out and about topic has officially been hijacked by you after I commented on my ride. My comment about needing an extra fan did not require discussion, it was only an observation, like the sun is shining, we don't need to discuss the earth orbit and such.

In your picture you have alot of grunge. Where is that coming from? If it is on the plastic in the radiator, it must be on the inside of your engine too. I see why you may be having thermostat issues in this photo. You still need the thermostat to keep your engine as healthy as possible. And yes, over cooling is less damaging than over heating. Shouldn't have to say it.



Same as I shouldn't have to talk about pressure and the effect of containing the steam. WATER BOILS AT 100º C (212º F).

Adding glycol or any other solution to water does not change the boiling point, ever hear of distillation? Yes, that is how we extract water out of a solution of water and something else.

Pressure will contain the steam and/or vapor from expanding out into the atmosphere. But make no mistake, it is still at boiling temperature,which is a bit warm for the engine. The fan needs to come on BEFORE boiling temperature (100º C) so when the t-stat is open, it is taking cooler liquid into the engine. If the coolant flows too fast through the material being cooled, there may not be an efficient transfer of heat, depending on the coefficient of the coolant. Water is just about the best, but water does not have any anti corrosive or anti freezing properties. Yes, water freezes at 0º C (32º F)

Now I surely did not think I had to explain this to the guys here, I figured you were smart enough to know that creating a closed system and pressurizing it will allow you to take water past boiling temperature and not loose it (water) to atmosphere. Do you really think anybody here is that un educated about engines and cooling? Maybe so, because you don't seem to think a thermostat is needed in a liquid cooled motor.

Just depends on how nice you want to treat you motor. Let the grunge and sludge build up within all you want. Run it at any temperature you want, it's your bike.

For others who wish to take care of their bikes in a professional manner, use a good coolant, use a thermostat, and add the auxiliary fan for slow technical driving in hot conditions. The stock system works if you keep it clean. The design is fine, it is the implementation of some of the parts that lack durability, and the setting the fan is supposed to come on at is too high.
Click to expand...


Thermostat or not the 'grunge' would still be there in the system.

The picture is of the Thermostat cage and the 'grunge' you refer to is just dried coolant - nothing more, nothing less.
Put some in a bowl and let it evaporate.

You are talking crap when you say 'WATER BOILS AT 100C' because you forgot to add the - AT STANDARD ATMOSPHERIC PRESSURE

That is why engine cooling systems are pressurised - to RAISE THE BOILING POINT !

I repeat - The way the Thermostat works in the TR650 is NOT the same as other bikes or engines and it creates Radiator Inefficiency due to the continuous by pass of coolant.

There are over 50 Husqvarnas here in Philippines all running no thermostat and all with NO COOLING PROBLEMS - end of story.
 
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