removing paint from guide bar or tip

[CR888]

Redbull661, post: 189310, member: 353"]lower cylinder temps.

I am not sure this is true. Bar temperature is caused by friction of the chain, bar & wood. Cylinder temps and bar temps are not directly related. Although a dull chain and ham fist can increase both but they are not otherwise related. I must be missing something??

 

[Redbull661]

I am not sure this is true. Bar temperature is caused by friction of the chain, bar & wood. Cylinder temps and bar temps are not directly related. Although a dull chain and ham fist can increase both but they are not otherwise related. I must be missing something??

Redbull doesn't really care about knowing "why" or even if it makes sense or not. Redbull just likes what is the fastest.


My #s aren't perfect. But there is correlation in every spread sheet below. Correlation enough for ME to say yes there is something going on. I'm not out to prove anything beyond a shadow of all doubt. I'm not an engineer and I sure as hell don't want to be. I just want the fastest.

So...

- .050 vs .063 - amount of oil in the bar groove
- paint on the bar and what type
- paint on the tip
and so on, it all plays into each other...

Here is how I think about it -

less oil in the groove = heats up the chain = heats up the rim sprocket = heats up the clutch = heats up the crank = heats up the jug....and hotter chain dulls faster = which causes even more heat and the cycle continues and cut to cut you get slower and slower.


in the bar - less dissipation of heat due to the wrong kind of paint or clear coat = hotter chain = heats up the rim sprocket ....etc etc.

dual chain = heats up rim sprocket

properties of the bar oil = could run hotter or cooler or be too thin or thick etc etc etc = heats up the chain

bar tip some running at ~200 F vs some running at ~90F = heats up the chain heats up the rest of the bar = heats up the saw.

bar groove not perfectly true = chain friction......etc etc etc. to heats up the saw.


IMO you can't just say one thing is the cause...it all plays into each other.

 

[KenJax Tree]

OH LOOK!!!!! SHINEY!!!!!!!

 

[junkman]

Redbull ,on the .063 the .404 carries more oil than 3/8 and in my opinion .404 runs cooler than 3/8 . at least milling it does .

 

[Magnumitis]

.050 weighs less than .063 [emoji3]

 

[Redbull661]

.050 weighs less than .063 [emoji3]

everyone says that. am I the only one that actually weighed the stuff? cuz the difference is literally like .3 oz's not a full ounce. But POINT three of 1 ounce. On a 36" chain.

furthermore!!! for all you guys concerned about weight. The savings isn't in the chain. It's in the bar!

28 es lite .050 = 2lbs 13.5oz
28 es lite .063 = 2lbs 11.5oz

so you save like .2-.3 oz on the chain but lose a full 2.0 oz on the bar. and you carry less oil which = more friction.

36" es lite .050 = 3lbs 10.5 oz
36" es lite .063 = 3lbs 8.0 oz

 

[junkman]

.050 weighs less than .063 [emoji3]

But the bar groove has more metal on the .050 than .063 so it cancels out ,you lose this time .

 

[Magnumitis]

But the bar groove has more metal on the .050 than .063 so it cancels out ,you lose this time .

= stronger rails [emoji3]

 

[junkman]

= stronger rails [emoji3]

Yeah but .050 will burn the paint off the bar over .063 from too much heat ,but i guess the money you save on bar oil will buy you a new bar some day .

 

[Magnumitis]

everyone says that. am I the only one that actually weighed the stuff? cuz the difference is literally like .3 oz's not a full ounce. But POINT three of 1 ounce. On a 36" chain.

furthermore!!! for all you guys concerned about weight. The savings isn't in the chain. It's in the bar!

28 es lite .050 = 2lbs 13.5oz
28 es lite .063 = 2lbs 11.5oz

so you save like .2-.3 oz on the chain but lose a full 2.0 oz on the bar. and you carry less oil which = more friction.

36" es lite .050 = 3lbs 10.5 oz
36" es lite .063 = 3lbs 8.0 oz

I run a 28" es light in .050

And a couple of 24" Sugi lights .050

I run a much thinner bar oil which flows more better in the .050

 

[Chainsaw Jim]

Why doesn't outside air temperature matter in any of this? Hell it could have been 30 degrees warmer at the end of the test.

 

[Definitive Dave]

I think the point is everything matters.
The trick is finding which combination of factors line up to give you the best results for your situation.
You cant bet your shiniest recoil grommet that guys looking for that 1/10 or 1/100 of a second advantage take actual experiments seriously.
head to head comparisons are useful and fun
nothing wrong with healthy skepticism, of course you should back it up with your own experiments that support your position
aaaaannnnd having a position before the experiment reveals bias, which is the enemy of science

 

[Deets066]

When you gunna test roller noses?

 

[Magnumitis]

Yeah but .050 will burn the paint off the bar over .063 from too much heat ,but i guess the money you save on bar oil will buy you a new bar some day .

I get my bar oil free

 

[Chainsaw Jim]

Maybe someone can use a thermometer with a wire lead and solder it to a surface and then paint over the solder with thick paint to match powder coating. Then both thermometers can be held side by side to compare.
I'd do it but i don't have both types of thermometers.

 

[Redbull661]

re-testing my paint on and off theory on bar tip

32" oregon lite with factory black paint finish on tip. Tip readings 153-163F cut time 40.3

removed the black paint off tip - Tip readings drop to 90-118F. cut time 40.9 Cut time didn't improve as I was now out of the checking/ends of the boards.

 

[Deets066]

pretty good temp drop

 

[thomas1]

Where does the heat go? If your theory is that the paint is keeping the heat in the bar because of its' insulation properties that insulation exists on the air side of the paint, too. You're claiming that the absence of paint is making the bar run cooler, if more heat was able to escape after the paint removal the bar surface should measure hotter, not colder.

The heat being produced by friction doesn't magically disappear because the paint got removed. The bar is never going to get hotter than amount of heat being generated by the friction of the chain moving along its' surface, unless you have a bearing failure or some other issue that increases the heat produced.

Please explain to me how the paint is keeping all the heat in the bar but still allowing your temp gun to read hotter on the outside surface. If the heat is being blocked from escaping by the paint how does it escape to your temp gun?

 

[MyUsername]

I just stripped all the paint off my woodstove after being inspired by these ideas. My house should keep warmer now because the heat was being trapped inside the metal walls(just under the paint film) ...and going up the chimney. I don't want that heat trapped in my stove, I want it to dissipate into the air in my house. Thanks for the idea!

I may also apply an extra thin layer of paint to my house exterior to add insulation....and further take advantage of the extra heat I'll gain from my stove.
I'm gonna be warm this winter!

 

[KenJax Tree]

[emoji1]