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Search: Posts Made By: 63rickert
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01-23-23, 01:36 PM
Replies: 155
Views: 6,709
Posted By 63rickert

Simplest explanation I can find quickly:...

Simplest explanation I can find quickly: https://www2.chem.wisc.edu/deptfiles/genchem/netorial/modules/thermodynamics/energy/energy2.htm

First hit on a google search and better than most. It is...
01-23-23, 12:50 PM
Replies: 155
Views: 6,709
Posted By 63rickert

So instead imagine we are on a flat. I am riding...

So instead imagine we are on a flat. I am riding next to a guy who is doing 70rpm and I am doing 120rpm. I am not doing 150W of internal work my partner is avoiding. If that were the case I would...
01-23-23, 12:06 PM
Replies: 155
Views: 6,709
Posted By 63rickert

Do you understand how n+1 works? Mechanic secures...

Do you understand how n+1 works? Mechanic secures a quick release normally, customer can't force that thing open at all. The mechanic has big strong hands and did nothing unusual. Customer can't even...
01-23-23, 11:21 AM
Replies: 155
Views: 6,709
Posted By 63rickert

Six watts per kilo would mean putting out close...

Six watts per kilo would mean putting out close to 600 watts. I can still do that, I think, but I would be winded. Instead it is just relaxing downhill. Once smoothness is achieved it is no more...
01-22-23, 02:01 PM
Replies: 155
Views: 6,709
Posted By 63rickert

That is the most common form of the physics...

That is the most common form of the physics equation.

I expected there would be someone picking nits to no purpose. The word force has a variety of English language meanings, the physics meaning...
01-22-23, 12:58 PM
Replies: 155
Views: 6,709
Posted By 63rickert

Force equals one half mass times velocity...

Force equals one half mass times velocity squared. Apply that basic physics formula to pedal speed.

Pedal with exponents on your side.

90 or 100rpm is barely beginning to be spinning.

Does...
01-19-23, 11:24 AM
Replies: 227
Views: 10,861
Posted By 63rickert

One of my cycling mentors completed this event ...

One of my cycling mentors completed this event

https://www.youtube.com/watch?v=8KotsGmYl8A

while drinking his normal fifth of bourbon daily, plus plenty of Canadian beer. RIP Rudy.

Then...
12-22-22, 06:24 AM
Replies: 57
Views: 2,946
Posted By 63rickert

Module E was introduced in 1975. And was a...

Module E was introduced in 1975. And was a terrible rim. A terrible rim based on a terrible idea. Colnago used Nisi rims when sold as a complete bike.

Early Phil hubs were terrible. Bearing shake...
12-21-22, 10:26 AM
Replies: 57
Views: 2,946
Posted By 63rickert

Look like early Phil hubs. Test them. If early...

Look like early Phil hubs. Test them. If early they all had freeplay/bearing shake. Came with index card in the box saying .003"-- 004" play at rim was normal. There were ways to adjust out that play...
12-21-22, 09:03 AM
Replies: 17
Views: 1,075
Posted By 63rickert

OEM was Union .080-.060. Galvanized.

OEM was Union .080-.060. Galvanized.
12-18-22, 06:35 AM
Replies: 15
Views: 697
Posted By 63rickert

Sixteen drive side spokes and eight left side...

Sixteen drive side spokes and eight left side spokes is straightforward on 32 spoke rims and hubs. I'm sure there are wheels like that out on the roads. My experience with radial left side rear on...
12-17-22, 02:03 AM
Replies: 140
Views: 6,937
Posted By 63rickert

You have no way of knowing if the person who sold...

You have no way of knowing if the person who sold the bike is a fence or a person who bought the bike in about the same way you did. Do not make assumptions.

It should not remotely be possible to...
12-15-22, 03:20 PM
Replies: 15
Views: 697
Posted By 63rickert

If you have a suitable hub, meaning one strong...

If you have a suitable hub, meaning one strong enough for radial, it is no big deal to build a 36 as an 18. With tall modern rims -- they are almost all tall now -- it will work. A 32 built as 16...
12-14-22, 07:21 PM
Replies: 15
Views: 697
Posted By 63rickert

Ron Boi used to build stuff like that 50 years...

Ron Boi used to build stuff like that 50 years ago. It was very slow and Ron was very good. Even with best wheel builder ever not all combinations were a success. If you were as good as Ron you would...
12-06-22, 04:34 PM
Replies: 30
Views: 2,374
Posted By 63rickert

Inspiration for the CN Hellenics was the Carol...

Inspiration for the CN Hellenics was the Carol Fields Hetchins. Carol was pretty inspiring herself. Once there was a sample out on the street customers asked for them. Eddy did not push the style,...
12-04-22, 04:27 PM
Replies: 30
Views: 2,374
Posted By 63rickert

That was not a derail. You raised interesting...

That was not a derail. You raised interesting points. Your input welcome.
12-04-22, 02:07 PM
Replies: 30
Views: 2,374
Posted By 63rickert

Ike Safter has been mentioned in this thread. He...

Ike Safter has been mentioned in this thread. He had a theory I always liked. I don't know if it is right and would be interested also what Doug has to say.
Ike said vibration from rear wheel goes...
12-04-22, 01:51 PM
Replies: 30
Views: 2,374
Posted By 63rickert

Steep head angles has happened lots of times....

Steep head angles has happened lots of times. Fashion is a major determinant in frame design. I had an '83 Bianchi that was measured a few times and the answer came up 75 or 76 degree head angle....
12-04-22, 11:22 AM
Replies: 30
Views: 2,374
Posted By 63rickert

Yes, I knew Eddy. I remember your frame. Most CNs...

Yes, I knew Eddy. I remember your frame. Most CNs were for racers. The guy who had this bike was not, I saw him riding and at the shop, did not know him.

Campy brakes are a bit more complex than...
12-03-22, 03:43 PM
Replies: 30
Views: 2,374
Posted By 63rickert

The frame is beautiful. A wonder. The...

The frame is beautiful. A wonder.

The Avocet cranks are pretty, they broke. The Galli brakes are one of the cheaper Campy copies. If you like how they work you will love how Campy works. Modolo...
11-19-22, 05:08 PM
Replies: 12
Views: 669
Posted By 63rickert

Othon had a career as a chef, his son was a...

Othon had a career as a chef, his son was a gourmand. They knew restaurants.

I still do small sprints and don't pull out. Cannot guarantee you won't. Depth of groove in leather will look like not...
11-19-22, 11:58 AM
Replies: 12
Views: 669
Posted By 63rickert

There's an item called screw nails. Old old ones...

There's an item called screw nails. Old old ones are square nails that were twisted a few turns. Your local cobbler may have them, a quick google search says they are still widely available. My...
11-15-22, 09:41 AM
Replies: 53
Views: 3,122
Posted By 63rickert

That story is perfect. Spinergy Rev X were always...

That story is perfect. Spinergy Rev X were always trash. They have been recalled. They are flat dangerous. Super well promoted and eye-catching. Not attractive or good looking or fit for purpose, but...
11-12-22, 01:15 PM
Replies: 53
Views: 3,122
Posted By 63rickert

Most things that become collector items with more...

Most things that become collector items with more than a small following were made by persons. Persons with names and stories. If the item was used by someone well known, and especially if the...
11-07-22, 02:57 PM
Replies: 8
Views: 1,349
Posted By 63rickert

The picture is less than clear. It does look like...

The picture is less than clear. It does look like a Campagnolo seatpost. They were not long MTB posts. They didn't do minimum insertion marks because who rode Campagnolo was expected to know without...
11-03-22, 12:07 PM
Replies: 25
Views: 937
Posted By 63rickert

[QUOTE=canklecat;22696005]Might be an alignment...

[QUOTE=canklecat;22696005]Might be an alignment issue.

Yes. And it could be the alignment of the bike. If the bike is out of line, crabbing sideways, you will use body English to keep it going...
11-02-22, 12:53 PM
Replies: 13
Views: 595
Posted By 63rickert

It's real nice to see you guys having better luck...

It's real nice to see you guys having better luck than me. I will keep trying. Which I am anyway, but success is not every time for me.

Sealant is compounded for tubeless tires. The sealant is...
11-01-22, 07:00 AM
Replies: 29
Views: 1,883
Posted By 63rickert

Just amazing. That fall must also have put a lot...

Just amazing. That fall must also have put a lot of stress on your neck. And your neck did OK.

Still you want to do everything possible so that falls do not repeat. First step is to think t...
10-31-22, 07:14 PM
Replies: 13
Views: 595
Posted By 63rickert

If you have a butyl tube with sealant that tire...

If you have a butyl tube with sealant that tire will hold air for weeks, maybe months. Really sealed.

Your example is a perfect case for when this works.
10-31-22, 09:30 AM
Replies: 13
Views: 595
Posted By 63rickert

It will vary with the sealant, with the tubular...

It will vary with the sealant, with the tubular and with the environment. Once the sealant is inside keep that tire inflated forever. A flat tire with sealant inside leads to a tube that is stuck to...
10-29-22, 07:59 AM
Replies: 15
Views: 913
Posted By 63rickert

I would agree that a 71 seat angle is sensible...

I would agree that a 71 seat angle is sensible for general purpose riding. But these were explicitly time trial bikes.

Also agree with the line about lawyers dictating seat angles for US market...
10-28-22, 10:38 AM
Replies: 15
Views: 913
Posted By 63rickert

71/73 is going to have toe overlap issues unless...

71/73 is going to have toe overlap issues unless the top tube is very long. A time trialist who believes in 71 degree seat angles is not going to care about that. The belief in shallow angles...
10-28-22, 10:04 AM
Replies: 42
Views: 2,561
Posted By 63rickert

Yes. All of that. In lighter than...

Yes. All of that.

In lighter than electroforged there were a fair number of much older Superiors and New Worlds and SuperSports in step through frames over the years. I'm in Chicago and used to...
10-27-22, 03:47 PM
Replies: 201
Views: 7,456
Posted By 63rickert

It is true that some spend serious money on bikes...

It is true that some spend serious money on bikes they just gotta have. Then there are vintage bikes that we get for free. And some that we get for very little. New bikes for free doesn't happen...
10-27-22, 03:30 PM
Replies: 201
Views: 7,456
Posted By 63rickert

Yes, he was. And he is twice as old as some of...

Yes, he was. And he is twice as old as some of those he beat.

For most of us, and probably all on this forum, we just don't have enough power that "efficient power transfer" would make one bit of...
10-27-22, 03:20 PM
Replies: 201
Views: 7,456
Posted By 63rickert

Arkansas High Country Race was just won on a...

Arkansas High Country Race was just won on a steel bike with rim brakes. And inner tubes. The steel was old timey 1" and !-1/8" tubes. With lugs.
10-27-22, 01:10 PM
Replies: 42
Views: 2,561
Posted By 63rickert

I have a 23" ladies frame 1949 Hercules...

I have a 23" ladies frame 1949 Hercules available. Needs lots of TLC but is complete and could be presentable. This is not a commercial advert. Donations accepted but mostly looking for a good home.
10-25-22, 09:51 AM
Replies: 13
Views: 1,406
Posted By 63rickert

Yes, it is for Brits. I would never put something...

Yes, it is for Brits. I would never put something as recent as a Record Crono on my '50 Bates. In fact have a 40 hole 50s Fiamme to match the front ready to go should I ever need a rim. But Brits are...
10-24-22, 06:35 AM
Replies: 28
Views: 1,558
Posted By 63rickert

As long as you are not hitting the chain stay...

As long as you are not hitting the chain stay with the left crank you're fine. Not like it will settle in and get closer. Looks like chainguard clearance on right.

Also looks like old brilliant...
10-24-22, 04:57 AM
Replies: 50
Views: 2,628
Posted By 63rickert

Posted this on the other thread and it works here...

Posted this on the other thread and it works here as well.

https://www.youtube.com/watch?v=H-Pl-H3UJJg

Theo Bos at 140kph or 86mph. Normal bike. Not a normal rider.

Questions about gearing?...
10-23-22, 02:30 PM
Replies: 28
Views: 1,558
Posted By 63rickert

Your Raleigh spindle is 5/8" or 0.625". If the...

Your Raleigh spindle is 5/8" or 0.625". If the Stronglight is French it is a 16mm spindle hole, which is 0.630". It is a loose fit and you can't miss it. It will be OK. If you have a French crank the...
10-23-22, 02:01 PM
Replies: 28
Views: 1,558
Posted By 63rickert

Cotters are an easy slide fit until the wedge...

Cotters are an easy slide fit until the wedge connects to the flat on the spindle. Keep grease away from the filed flat and the spindle flat. Everything else should be greased but err on side of dry...
10-23-22, 01:48 PM
Replies: 28
Views: 1,558
Posted By 63rickert

I type slow and missed your #3. Everyone is...

I type slow and missed your #3. Everyone is familiar with French cranks that have been tapped to 9/16". Retapping the cotter bore hole is an odd one but could have happened. Will a 3/8 drill bit go...
10-23-22, 01:27 PM
Replies: 28
Views: 1,558
Posted By 63rickert

Skip Measure your eBay cotters. They will be...

Skip

Measure your eBay cotters. They will be undersized. If you want full sized cotters go to Mark Stonich who sold you the press. Or go back to eBay and try to be certain you are buying vintage....
10-21-22, 05:29 PM
Replies: 50
Views: 2,628
Posted By 63rickert

Back to original query and putting aside the...

Back to original query and putting aside the truck drafting ---

Every day I see cyclists riding no handed while texting. So far have seen only one resulting accident, the rider ran straight into...
10-21-22, 05:25 PM
Replies: 24
Views: 1,071
Posted By 63rickert

https://www.youtube.com/watch?v=H-Pl-H3UJJg ...

https://www.youtube.com/watch?v=H-Pl-H3UJJg

Normal bike, normal tires, special rider. He did this a number of times for journalists and does not seem the least bit stressed. If you don't care to...
10-20-22, 10:27 AM
Replies: 5
Views: 945
Posted By 63rickert

Fratelli Brivio aka FB. Mutiple versions. All top...

Fratelli Brivio aka FB. Mutiple versions. All top quality. Relatively available. My daily is using a steel 1930s FB that was NIB with a badly bent axle when it showed up in the mail. 1970s Tipo axle...
10-16-22, 12:16 PM
Replies: 18
Views: 1,520
Posted By 63rickert

Talk to FMB and they will make you any size...

Talk to FMB and they will make you any size tubular you want.

Get rim blanks, roll and plug them yourself, drill as many spoke holes as you need. I can't do that myself, a fair number of mechanics...
10-15-22, 12:44 PM
Replies: 130
Views: 7,435
Posted By 63rickert

Especially when used with an original GS lever....

Especially when used with an original GS lever. Nothing like it.
10-14-22, 05:25 AM
Replies: 33
Views: 2,267
Posted By 63rickert

It all matters. Sure tires are biggest and...

It all matters. Sure tires are biggest and easiest. Yes, four cross feels softer. Yes, thin butted spokes. Yes, flat rims. Lower spoke tension works, although the wheel may be less durable. Light...
Showing results 1 to 50 of 1000
 


 
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