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Search: Posts Made By: Lightning Pilot
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10-15-19, 08:51 PM
Replies: 37
Views: 2,370
Posted By Lightning Pilot

Of course. I should know by now that a...

Of course. I should know by now that a professional career in materials science, chemistry, and geology is utterly trumped by garage "experience" and word of mouth "experience." What was I thinking...
10-14-19, 06:39 AM
Replies: 51
Views: 5,762
Posted By Lightning Pilot

Most, if not all, of that looks pretty...

Most, if not all, of that looks pretty superficial. I don't see any serious corrosion at the welds. If it were me, I'd use dilute (10%) phosphoric acid on the inside, wet sand the exterior (use elbow...
Forum: Recumbent
10-13-19, 10:27 PM
Replies: 96
Views: 18,657
Posted By Lightning Pilot

How are things at Muppet Labs? :lol::thumb: (Love...

How are things at Muppet Labs? :lol::thumb: (Love the avatar!)
10-13-19, 10:24 PM
Replies: 37
Views: 2,370
Posted By Lightning Pilot

Aaargghh! A little knowledge is a dangerous...

Aaargghh! A little knowledge is a dangerous thing. Some good advice here, some bad.

First, you don't know what you are dealing with, and neither do we. That makes all advice very hypothetical, and...
10-13-19, 09:59 PM
Replies: 25
Views: 6,419
Posted By Lightning Pilot

Urine contains ammonia, which is death on...

Urine contains ammonia, which is death on aluminum, steel, brass—most common metals—if left and not rinsed off promptly (~24-48 hours).

Feces is another matter. Slower but still corrosive.

I do...
Forum: Recumbent
10-13-19, 10:30 AM
Replies: 96
Views: 18,657
Posted By Lightning Pilot

I recommend finding the nearest dealer. Shipping...

I recommend finding the nearest dealer. Shipping gets pricey, as previously mentioned. You can do a lot of research online, but definitely try before you buy. I also recommend starting with a lower...
Forum: Recumbent
10-13-19, 10:20 AM
Replies: 96
Views: 18,657
Posted By Lightning Pilot

Confused drivers are safer drivers? :lol: The...

Confused drivers are safer drivers? :lol: The same thing applies, to a lesser extent, to two wheeled recumbents. Of course, they have to see you first, which is why ours have lots of lights pointing...
10-12-19, 01:12 PM
Replies: 27
Views: 3,159
Posted By Lightning Pilot

Something I forgot to mention that is very...

Something I forgot to mention that is very important if diluting an acid, in this case phosphoric acid:

"Do what you orter*, add acid to water!" Always add acid to water to dilute it, NEVER ADD...
10-06-19, 09:44 AM
Replies: 51
Views: 5,762
Posted By Lightning Pilot

"Cold galvanizers" are not worth using. Any...

"Cold galvanizers" are not worth using. Any quality brand of zinc phosphate primer should work.

As for plugging frame openings, I suggest rubber stoppers, the kind used in chemical labs. They come...
10-06-19, 09:35 AM
Replies: 10
Views: 668
Posted By Lightning Pilot

Got them, thanks!

Got them, thanks!
10-05-19, 01:45 PM
Replies: 27
Views: 3,159
Posted By Lightning Pilot

The process is essentially the same: The...

The process is essentially the same: The phosphoric acid is reacting with the iron corrosion products to form a dense, insoluble iron phosphate.

In a zinc phosphate containing coating, the zinc...
10-05-19, 11:48 AM
Replies: 10
Views: 668
Posted By Lightning Pilot

Thanks everyone for the replies. Referenced sites...

Thanks everyone for the replies. Referenced sites bookmarked.:thumb:

I maintain a Lightning P-38 and a Catrike Pocket (wife's), so these references should do. I want to eventually upgrade the...
10-05-19, 11:29 AM
Replies: 27
Views: 3,159
Posted By Lightning Pilot

Not a badly designed experiment, especially for...

Not a badly designed experiment, especially for "home grown."

However, one thing should be clear: Very few surface treatments, of any kind, will permanently prevent corrosion. Once it starts,...
10-04-19, 09:37 PM
Replies: 51
Views: 5,762
Posted By Lightning Pilot

I agree. You are overthinking the project, in...

I agree. You are overthinking the project, in fact, this is the gist of what I was going to post. The KISS wisdom applies. Keep It Simple, Son.
10-03-19, 01:49 PM
Replies: 10
Views: 668
Posted By Lightning Pilot

Parts and components references?

I'd like to find something fairly comprehensive, so it would probably have to be an online reference. Is there such a thing, or things?
10-03-19, 01:45 PM
Replies: 27
Views: 3,159
Posted By Lightning Pilot

If you go that route, make sure you use boiled...

If you go that route, make sure you use boiled linseed oil. The unboiled version takes forever to polymerize.
10-03-19, 01:38 PM
Replies: 12
Views: 1,773
Posted By Lightning Pilot

Phil, I'm glad you are on the mend. Eternal...

Phil, I'm glad you are on the mend. Eternal vigilance is not merely the price of liberty. It is the price of life, itself. And that gets more true with advancing age.

I also like your take on...
10-03-19, 10:27 AM
Replies: 51
Views: 5,762
Posted By Lightning Pilot

Electrolysis isn't necessary, and why would you...

Electrolysis isn't necessary, and why would you want to go to all that work?

The interior should not need any further work, just let the phosphoric solution dry. You can rinse it out with water...
10-02-19, 03:02 PM
Replies: 51
Views: 5,762
Posted By Lightning Pilot

Thanks! I should have said that! :o

Thanks! I should have said that! :o
Forum: Recumbent
10-02-19, 02:59 PM
Replies: 96
Views: 18,657
Posted By Lightning Pilot

I have to agree that trikes, on a whole, are...

I have to agree that trikes, on a whole, are wider than uprights. I don't think that's a particular safety issue. However, every recumbent trike I've seen is lower than the average two wheeled bent,...
10-02-19, 02:26 PM
Replies: 51
Views: 5,762
Posted By Lightning Pilot

For the interior rust, don't worry about it....

For the interior rust, don't worry about it. Phosphoric acid will convert the iron corrosion into an insoluble, and essentially impermeable, barrier to future rust. I will guess that a quart of...
10-01-19, 10:20 AM
Replies: 51
Views: 5,762
Posted By Lightning Pilot

Citric acid is unlikely to produce the results...

Citric acid is unlikely to produce the results you want. It can even promote corrosion, especially in concentrated forms. You don't just want to remove the rust, you want to rust-proof the metal....
10-01-19, 10:00 AM
Replies: 30
Views: 3,141
Posted By Lightning Pilot

The reason most tools are made is to make a task...

The reason most tools are made is to make a task easier (or even possible). I'm old, and my ears have suffered a lot of abuse. I wouldn't dare trust them for spoke tension. Even if you are young and...
10-01-19, 09:27 AM
Replies: 51
Views: 5,762
Posted By Lightning Pilot

Thank you for that link! The local hardware store...

Thank you for that link! The local hardware store no longer carries it, and my supply was getting low.
Forum: Recumbent
10-01-19, 09:22 AM
Replies: 96
Views: 18,657
Posted By Lightning Pilot

You are braver men/women than I, Gunga Din!...

You are braver men/women than I, Gunga Din! :thumb: My wife's tadpole trike and my bent have LOTS of running lights, some on staffs so they are at car drivers' eye level. When we are on the street, I...
09-30-19, 08:48 PM
Replies: 51
Views: 5,762
Posted By Lightning Pilot

Oxalic acid is highly toxic. I would not...

Oxalic acid is highly toxic. I would not recommend it. A better solution would be phosphoric acid, which actually does a better job making rust inert. Boeshield makes a product called "Rust Free"...
09-30-19, 08:28 PM
Replies: 30
Views: 3,141
Posted By Lightning Pilot

I don't build wheels, but for checking spoke...

I don't build wheels, but for checking spoke tensions I've had good luck with an app called "Tensioner" or "Spoke Tensioner." Basically, it uses the tone of a plucked spoke on a smartphone (Apple...
09-27-19, 08:30 AM
Replies: 62
Views: 8,937
Posted By Lightning Pilot

(Emphasis mine—LP) Yes, hopefully—but that...

(Emphasis mine—LP)

Yes, hopefully—but that can be a forlorn hope. As we age, that difference changes. Injuries, though long healed, leave a permanent change in the affected area—if nothing else,...
09-26-19, 12:06 PM
Replies: 134
Views: 7,924
Posted By Lightning Pilot

You understand the implications of the point I...

You understand the implications of the point I made, but I think taking the human responsibility out of it is either a society-wide characteristic (e.g., your example, "gun" violence, etc.) or...
09-24-19, 10:17 AM
Replies: 134
Views: 7,924
Posted By Lightning Pilot

Not silly word games, and how you get to your...

Not silly word games, and how you get to your conclusion isn't logical, it's emotional. After all, people don't kill people, weapons kill people, right? No one should be held accountable for their...
09-24-19, 10:11 AM
Replies: 62
Views: 8,937
Posted By Lightning Pilot

While I mostly agree, when giving advice to "push...

While I mostly agree, when giving advice to "push through pain" one needs to define, as precisely as possible, "pain." The reason is that anyone who needs that advice probably has no clue what you...
09-23-19, 09:42 PM
Replies: 176
Views: 15,717
Posted By Lightning Pilot

Thee are indeed young. :thumb: If it was...

Thee are indeed young. :thumb:

If it was possible that I could be 51 again, but it would cost me ten years off my life, I'd be tempted. :lol:
09-23-19, 09:36 PM
Replies: 134
Views: 7,924
Posted By Lightning Pilot

Those machines are just so much potential scrap...

Those machines are just so much potential scrap metal without the people operating them. The people are the dangerous element. No weapon ever kills without human interaction, no tool causes death or...
Forum: Recumbent
09-23-19, 04:56 PM
Replies: 96
Views: 18,657
Posted By Lightning Pilot

Yeah, that Sphinx is quite a bike … ...

Yeah, that Sphinx is quite a bike …




(I'm sure that someone, somewhere, at some time, named a bike "Sphinx.")

And if your bike is making that sound (Sphinx, sphinx, sphinx …) get thee to a...
09-23-19, 04:51 PM
Replies: 134
Views: 7,924
Posted By Lightning Pilot

I think you have summed it up quite succinctly....

I think you have summed it up quite succinctly. Unfortunately, while absolutely true, all too many people are "uncomfortable" with the idea.
09-23-19, 04:36 PM
Replies: 176
Views: 15,717
Posted By Lightning Pilot

Listen here, you young whippersnapper! Some of us...

Listen here, you young whippersnapper! Some of us ARE "old people." We are experienced, devious, cunning, sneaky, underhanded, and sometimes quick to anger. :50: :lol:
09-23-19, 04:27 PM
Replies: 69
Views: 5,127
Posted By Lightning Pilot

More than I can remember (old age is good for...

More than I can remember (old age is good for something!) Three most recent:

Had the cable to the front derailleur break about ten miles from home, rode home on the small chain ring—very aerobic...
09-23-19, 03:39 PM
Replies: 134
Views: 7,924
Posted By Lightning Pilot

It seems to me that the answer is simple. Whether...

It seems to me that the answer is simple. Whether they are driving, walking, riding, whatever, people are obliviots (oblivious idiots) some of the time, some more often than others. This problem...
Forum: Recumbent
09-23-19, 08:35 AM
Replies: 96
Views: 18,657
Posted By Lightning Pilot

I must disagree. Most of the recumbent trikes...

I must disagree. Most of the recumbent trikes I've seen take up no more lane width than a motorcycle. The greater width does, however, mean you have to be more careful in traffic, and it's harder to...
Forum: Recumbent
09-23-19, 08:26 AM
Replies: 96
Views: 18,657
Posted By Lightning Pilot

Recumbent trikes have one more advantage for...

Recumbent trikes have one more advantage for older riders, those over about 60: It's harder to fall. Most people think the danger of falling in older people is the danger of breaking bones. While...
09-23-19, 07:56 AM
Replies: 293
Views: 24,975
Posted By Lightning Pilot

Technically, a "Sagan" is defined as "billions...

Technically, a "Sagan" is defined as "billions and billions." :D

I've been told, though I remember differently, that Dr. Sagan never actually said, "…billions and billions …" However, any...
09-17-19, 07:58 AM
Replies: 3,443
Sticky 65-85+ Thread
Views: 521,918
Posted By Lightning Pilot

Doesn't surprise me at all. When you get old, a...

Doesn't surprise me at all. When you get old, a positive attitude is your best weapon.

Talk to several very good orthopedic surgeons, get three opinions, and make sure the surgeon uses the...
09-16-19, 07:58 PM
Replies: 293
Views: 24,975
Posted By Lightning Pilot

And many Sagans of pascals.

And many Sagans of pascals.
09-16-19, 07:55 PM
Replies: 293
Views: 24,975
Posted By Lightning Pilot

:troll:

:troll:
09-16-19, 12:39 PM
Replies: 62
Views: 8,937
Posted By Lightning Pilot

First, see a good doctor and get checked out. At...

First, see a good doctor and get checked out. At your age and with your history, this is an absolute necessity.

Then, assuming you are healthy, start walking every day, every season, in all...
09-16-19, 12:18 PM
Replies: 293
Views: 24,975
Posted By Lightning Pilot

:lol: Not a problem. 150 psi grip strength.

:lol: Not a problem. 150 psi grip strength.
09-16-19, 09:43 AM
Replies: 293
Views: 24,975
Posted By Lightning Pilot

And why, pray tell, would I want to do that?:foo:

And why, pray tell, would I want to do that?:foo:
09-13-19, 12:54 PM
Replies: 293
Views: 24,975
Posted By Lightning Pilot

Because those forums are the easiest target for...

Because those forums are the easiest target for bots, trolls, etc. to spot and exploit. Every forum tends to have something like that.

I think the ten posts related to cycling rule is a good one....
09-13-19, 12:46 PM
Replies: 26
Views: 2,683
Posted By Lightning Pilot

I agree. ;) In most machining, "wear" has...

I agree. ;)

In most machining, "wear" has tolerances. When one part of a pair exceeds tolerances, the other part will begin to wear faster. However, if the worn part is replaced, and the other...
09-12-19, 11:05 AM
Replies: 26
Views: 2,683
Posted By Lightning Pilot

That thought occurred to me, too, about 3-4 times...

That thought occurred to me, too, about 3-4 times as much chain as an upright. I haven't kept good records of time and distance (yeah, I know I should) but a SWAG (scientific wild-assed guess) would...
Showing results 1 to 50 of 113
 


 
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