Mark Anderson
@markofthemtns.bsky.social
Was an electrical engineer for pay, now I do engineering for fun. Presently into mountain biking the high jeep roads in Colorado.
After dropping the chain on a hard climb I replaced the cassette on my mountain bike. It certainly shifts better.
I put maybe 5000 miles on it which seems low to me. Whatever...
You can see that I really like that large cog. That's 26F 51R and I'm considering 24 front.
I'm officially old.
I put maybe 5000 miles on it which seems low to me. Whatever...
You can see that I really like that large cog. That's 26F 51R and I'm considering 24 front.
I'm officially old.
August 30, 2025 at 3:50 PM
After dropping the chain on a hard climb I replaced the cassette on my mountain bike. It certainly shifts better.
I put maybe 5000 miles on it which seems low to me. Whatever...
You can see that I really like that large cog. That's 26F 51R and I'm considering 24 front.
I'm officially old.
I put maybe 5000 miles on it which seems low to me. Whatever...
You can see that I really like that large cog. That's 26F 51R and I'm considering 24 front.
I'm officially old.
I found this bit of clothing a block from my house and suspect it is a swimsuit.
But honestly, I don't know if the top is on the left or right.
It's a topological disaster area.
But honestly, I don't know if the top is on the left or right.
It's a topological disaster area.
August 20, 2025 at 4:02 AM
I found this bit of clothing a block from my house and suspect it is a swimsuit.
But honestly, I don't know if the top is on the left or right.
It's a topological disaster area.
But honestly, I don't know if the top is on the left or right.
It's a topological disaster area.
I've been using these calipers for over 30 years and dropped them for the first time. It took a lot of carb cleaner to get it moving again.
We're still working on finding zero.
I'll check calibration before returning to service.
Sigh...
We're still working on finding zero.
I'll check calibration before returning to service.
Sigh...
June 17, 2025 at 3:50 PM
I've been using these calipers for over 30 years and dropped them for the first time. It took a lot of carb cleaner to get it moving again.
We're still working on finding zero.
I'll check calibration before returning to service.
Sigh...
We're still working on finding zero.
I'll check calibration before returning to service.
Sigh...
Biked up Pennock Pass today with my neighbor Jeremy who said, "It's hard to believe that you can go uphill for 12 miles."
The volunteers at Historicorps were renovating the Buckhorn Ranger Station.
The volunteers at Historicorps were renovating the Buckhorn Ranger Station.
June 12, 2025 at 3:20 AM
Biked up Pennock Pass today with my neighbor Jeremy who said, "It's hard to believe that you can go uphill for 12 miles."
The volunteers at Historicorps were renovating the Buckhorn Ranger Station.
The volunteers at Historicorps were renovating the Buckhorn Ranger Station.
Biked up Old Fall River Rd to 10,700’ elevation where the snow crosses the road.
A 3 mile section of the return trip seems to indicate that the elk prefer to poop on the downhill side of the road 29 to 6.
A 3 mile section of the return trip seems to indicate that the elk prefer to poop on the downhill side of the road 29 to 6.
June 3, 2025 at 3:00 AM
Biked up Old Fall River Rd to 10,700’ elevation where the snow crosses the road.
A 3 mile section of the return trip seems to indicate that the elk prefer to poop on the downhill side of the road 29 to 6.
A 3 mile section of the return trip seems to indicate that the elk prefer to poop on the downhill side of the road 29 to 6.
It's not often that I get to machine a true conic section.
May 30, 2025 at 4:05 AM
It's not often that I get to machine a true conic section.
My bike was making creaky sounds when I'd pedal but not coasting over bumps.
My reptilian brain said, "I know this sound, replace the suspension bearing."
My nerd brain said, "We only get noise on the pedal stroke, it's the crank bearing (bottom bracket)."
It was the suspension. The reptile won.
My reptilian brain said, "I know this sound, replace the suspension bearing."
My nerd brain said, "We only get noise on the pedal stroke, it's the crank bearing (bottom bracket)."
It was the suspension. The reptile won.
May 26, 2025 at 10:19 PM
My bike was making creaky sounds when I'd pedal but not coasting over bumps.
My reptilian brain said, "I know this sound, replace the suspension bearing."
My nerd brain said, "We only get noise on the pedal stroke, it's the crank bearing (bottom bracket)."
It was the suspension. The reptile won.
My reptilian brain said, "I know this sound, replace the suspension bearing."
My nerd brain said, "We only get noise on the pedal stroke, it's the crank bearing (bottom bracket)."
It was the suspension. The reptile won.
The aquastat on my boiler was acting oddly, but not failing. I decided to wait until the summer before potentially destroying my source of heat.
It's supposed to have 15°F hysteresis, not 50.
Easy testing: hot water, thermometer and ohm meter.
It's supposed to have 15°F hysteresis, not 50.
Easy testing: hot water, thermometer and ohm meter.
May 23, 2025 at 2:35 AM
The aquastat on my boiler was acting oddly, but not failing. I decided to wait until the summer before potentially destroying my source of heat.
It's supposed to have 15°F hysteresis, not 50.
Easy testing: hot water, thermometer and ohm meter.
It's supposed to have 15°F hysteresis, not 50.
Easy testing: hot water, thermometer and ohm meter.
Index shifting is nice and all that but I can clean and lube this 70's derailleur in 10 minutes.
May 21, 2025 at 1:04 PM
Index shifting is nice and all that but I can clean and lube this 70's derailleur in 10 minutes.
I was cutting a pipe on the lathe and it would appear that something got magnetized.
May 21, 2025 at 12:21 AM
I was cutting a pipe on the lathe and it would appear that something got magnetized.
No underwear in the yard today and it was graduation weekend.
Just some gymnast slippers and a T-shirt.
Booooring.
Just some gymnast slippers and a T-shirt.
Booooring.
May 19, 2025 at 7:45 PM
No underwear in the yard today and it was graduation weekend.
Just some gymnast slippers and a T-shirt.
Booooring.
Just some gymnast slippers and a T-shirt.
Booooring.
Climbing harnesses are tight and tend to make men look like they're hung like a warhorse. I don't know that this artifact needs to be faithfully reproduced in the mannequins.
May 14, 2025 at 1:40 PM
Climbing harnesses are tight and tend to make men look like they're hung like a warhorse. I don't know that this artifact needs to be faithfully reproduced in the mannequins.
Kinda burned the brakes today. I don't think those 203 mm rotors and resin pads are intended for a 250 pound gross weight and a long steep descent.
The brakes worked okay once they cooled off.
The brakes worked okay once they cooled off.
May 13, 2025 at 4:52 AM
Kinda burned the brakes today. I don't think those 203 mm rotors and resin pads are intended for a 250 pound gross weight and a long steep descent.
The brakes worked okay once they cooled off.
The brakes worked okay once they cooled off.
This is the real reason America has not adopted the metric system. If they said 4 inches women would never have sex again.
May 6, 2025 at 9:48 PM
This is the real reason America has not adopted the metric system. If they said 4 inches women would never have sex again.
For bike nerds.
The brakes were a bit soft and inspection showed the pistons weren't moving well. I machined a step block which allowed me to individually clean and lube each piston.
Seems to have worked.
I've also learned that 3 molecules of oil will permanently contaminate brake pads.
The brakes were a bit soft and inspection showed the pistons weren't moving well. I machined a step block which allowed me to individually clean and lube each piston.
Seems to have worked.
I've also learned that 3 molecules of oil will permanently contaminate brake pads.
May 5, 2025 at 10:45 PM
For bike nerds.
The brakes were a bit soft and inspection showed the pistons weren't moving well. I machined a step block which allowed me to individually clean and lube each piston.
Seems to have worked.
I've also learned that 3 molecules of oil will permanently contaminate brake pads.
The brakes were a bit soft and inspection showed the pistons weren't moving well. I machined a step block which allowed me to individually clean and lube each piston.
Seems to have worked.
I've also learned that 3 molecules of oil will permanently contaminate brake pads.
There's a lot of critter poop in the yard. It looks a bit large for a rabbit and there's way too much volume, that's 10% of a rabbit's body weight.
Unless, it was the Easter Bunny.
Unless, it was the Easter Bunny.
April 21, 2025 at 2:28 AM
There's a lot of critter poop in the yard. It looks a bit large for a rabbit and there's way too much volume, that's 10% of a rabbit's body weight.
Unless, it was the Easter Bunny.
Unless, it was the Easter Bunny.
I was biking at Soapstone, it's quite desolate 1 mile from Wyoming.
April 18, 2025 at 4:19 PM
I was biking at Soapstone, it's quite desolate 1 mile from Wyoming.
I found this heron rookery when biking along the Poudre River near Timnath. They used to live across the interstate but that grove of trees was removed for some reason. Then the herons moved to cell towers. It's good to see them back in trees.
April 15, 2025 at 2:35 AM
I found this heron rookery when biking along the Poudre River near Timnath. They used to live across the interstate but that grove of trees was removed for some reason. Then the herons moved to cell towers. It's good to see them back in trees.
I watched the movie Quadrophenia last night. It's okay but Blues Brothers is a better movie for music.
Because of the dialect, I had the subtitles turned on. I learned there are two very different ways the musical theme is presented.
Love, reign ov'r me
Love, rain on me
Because of the dialect, I had the subtitles turned on. I learned there are two very different ways the musical theme is presented.
Love, reign ov'r me
Love, rain on me
April 14, 2025 at 5:34 PM
I watched the movie Quadrophenia last night. It's okay but Blues Brothers is a better movie for music.
Because of the dialect, I had the subtitles turned on. I learned there are two very different ways the musical theme is presented.
Love, reign ov'r me
Love, rain on me
Because of the dialect, I had the subtitles turned on. I learned there are two very different ways the musical theme is presented.
Love, reign ov'r me
Love, rain on me
My neighbors told a story.
Him: I need to move something heavy, can you help?
Her: I'm doing colonoscopy prep. What do you think would happen?
Him: Yah. Never mind.
Him: I need to move something heavy, can you help?
Her: I'm doing colonoscopy prep. What do you think would happen?
Him: Yah. Never mind.
April 12, 2025 at 11:37 PM
My neighbors told a story.
Him: I need to move something heavy, can you help?
Her: I'm doing colonoscopy prep. What do you think would happen?
Him: Yah. Never mind.
Him: I need to move something heavy, can you help?
Her: I'm doing colonoscopy prep. What do you think would happen?
Him: Yah. Never mind.
I seem to be having one of those days when I'm pissing off everyone.
If you're one of the irritated, don't take it personally, everyone feels this way.
If I haven't pissed you off yet. Take a number, I'll get to you eventually.
If you're one of the irritated, don't take it personally, everyone feels this way.
If I haven't pissed you off yet. Take a number, I'll get to you eventually.
April 11, 2025 at 7:39 PM
I seem to be having one of those days when I'm pissing off everyone.
If you're one of the irritated, don't take it personally, everyone feels this way.
If I haven't pissed you off yet. Take a number, I'll get to you eventually.
If you're one of the irritated, don't take it personally, everyone feels this way.
If I haven't pissed you off yet. Take a number, I'll get to you eventually.
Another dog bone table frame for my friends who have a leftover slab of granite. And dogs.
April 11, 2025 at 4:07 AM
Another dog bone table frame for my friends who have a leftover slab of granite. And dogs.
Another proposed bumper sticker.
March 31, 2025 at 10:21 PM
Another proposed bumper sticker.
This is from 6 years ago, back when the internet was used to post photos of cats.
>>>>
Did a 15 minute cabinet modification at a friend's house. Zena decided it wasn't okay for me to leave.
>>>>
Did a 15 minute cabinet modification at a friend's house. Zena decided it wasn't okay for me to leave.
March 29, 2025 at 4:06 PM
This is from 6 years ago, back when the internet was used to post photos of cats.
>>>>
Did a 15 minute cabinet modification at a friend's house. Zena decided it wasn't okay for me to leave.
>>>>
Did a 15 minute cabinet modification at a friend's house. Zena decided it wasn't okay for me to leave.