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Search: Posts Made By: ofajen
Showing results 1 to 50 of 164
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02-21-21, 04:29 PM
Replies: 64
Views: 1,586
Posted By ofajen

Well, it would certainly be a waste for me to...

Well, it would certainly be a waste for me to ride a pretty bike. At the end of each ride it would be a pretty hike covered with either dust or mud. OTOH, that looks like it should be out somewhere...
02-21-21, 09:23 AM
Replies: 10
Views: 312
Posted By ofajen

It will depend on the pedals you are going to...

It will depend on the pedals you are going to use, as well. I benched my nice 70s road frame when I started using big platform pedals, because of pedal strike. I moved the parts over to a cheap 80s...
02-18-21, 07:43 PM
Replies: 27
Views: 716
Posted By ofajen

Just glad to see that ďnoĒ is winning. Otto

Just glad to see that ďnoĒ is winning.

Otto
02-15-21, 12:34 PM
Replies: 153
Views: 4,998
Posted By ofajen

Actually itís not a difference in taste or...

Actually itís not a difference in taste or preference or even a lack of intelligence. Iím willfully avoiding newer bike technologies just to be naughty. :)

Otto
02-15-21, 11:42 AM
Replies: 153
Views: 4,998
Posted By ofajen

Call it a ďslickyĒ.

Call it a ďslickyĒ.
02-15-21, 10:16 AM
Replies: 153
Views: 4,998
Posted By ofajen

Eliminating the derailleur is easy. Otto

Eliminating the derailleur is easy.

Otto
02-13-21, 05:16 PM
Replies: 161
Views: 8,409
Posted By ofajen

I used to love to hate those. Otto

I used to love to hate those.

Otto
02-13-21, 05:14 PM
Replies: 161
Views: 8,409
Posted By ofajen

Yeah, the JC Penney bike was a welded steel...

Yeah, the JC Penney bike was a welded steel frame, single piece steel cranks, steel rims, etc. So definitely heavy but also built to be ridden. Canít recall, I assume I gave it away, because I...
02-13-21, 05:05 PM
Replies: 1
Views: 180
Posted By ofajen

Looks like the SKS Mudrocker will be an option. ...

Looks like the SKS Mudrocker will be an option. SKS lists availability as 2nd quarter of 2021, so fairly soon...

You can find both rear and front fenders here:
...
02-13-21, 12:14 PM
Replies: 52
Views: 1,820
Posted By ofajen

Iíd agree. Itís hard to deal with any situation...

Iíd agree. Itís hard to deal with any situation where real work is needed if you are bolt upright. Even 10 or 15 degrees forward really lets you engage your core and arms and work hard if you need to...
02-13-21, 11:32 AM
Replies: 81
Views: 2,500
Posted By ofajen

That hasnít been my experience with frames from...

That hasnít been my experience with frames from the 70s and 80s. Iíve been able to build up the bikes the way I wanted cheaply and easily. Indeed, people just about give away decent 26Ē wheels...
02-09-21, 10:06 PM
Replies: 67
Views: 3,363
Posted By ofajen

Coincidentally, that was the average daily ride...

Coincidentally, that was the average daily ride when Mark Beaumont did the first cycling circumnavigation in under 80 days. Yikes!

And Iím equally impressed by Jenny Grahamís unsupported record of...
02-07-21, 11:14 AM
Replies: 81
Views: 2,500
Posted By ofajen

Iím always the last to know. I was going to...

Iím always the last to know. I was going to suggest that as an option. I have a Schwinn Sprint from the mid 80s running SS with touring bars. Great for just enjoying the ride. Lots of miles on it...
02-05-21, 11:20 PM
Replies: 2,278
Views: 155,411
Posted By ofajen

23 cold, slow, muddy, windy miles. Delightful! ...

23 cold, slow, muddy, windy miles. Delightful!

Otto
01-24-21, 09:32 AM
Replies: 81
Views: 2,250
Posted By ofajen

You know I used to be more grumpy about winter...

You know I used to be more grumpy about winter riding. I just did as much as I could stand because Iím not a big fan of indoor trainers.

This winter Iíve started to notice lots of little things...
01-21-21, 08:12 PM
Replies: 468
Views: 81,108
Posted By ofajen

It was a balmy 52F today so I went on the...

It was a balmy 52F today so I went on the city/county trail toward the river. Nearly half the trail was muddy, some with standing water. Iím developing a taste for riding on that slippery stuff. ...
01-21-21, 04:25 PM
Replies: 2,278
Views: 155,411
Posted By ofajen

15 miles. It was up in the low 50s today so the...

15 miles. It was up in the low 50s today so the trails are soggy. My bike and I both turned the glorious color of mud splatter. :)

...
01-02-21, 12:30 PM
Replies: 19
Views: 945
Posted By ofajen

First things first. Why do you want to do this?...

First things first. Why do you want to do this? That is, for what riding purpose? It will inevitably be a lot of time, trouble and expense to do all this, so you probably want some clarity on what...
01-01-21, 10:19 AM
Replies: 19
Views: 1,056
Posted By ofajen

Not that crazy, I think. Trail is the horizontal...

Not that crazy, I think. Trail is the horizontal distance from where the front wheel touches the ground to where the steering axis intersects the ground. Itís positive if the ground contact point is...
12-20-20, 09:34 AM
Replies: 468
Views: 81,108
Posted By ofajen

Itís not a rumor, the new SS will be called the...

Itís not a rumor, the new SS will be called the Roaduno. Itís been mentioned in the last two Rivbike emails. Not even on the production schedule yet, though. It will take up to 42mm wide tires.
...
12-12-20, 02:43 PM
Replies: 37
Views: 1,590
Posted By ofajen

I have the same experience with straight bars....

I have the same experience with straight bars. Useless as a handlebar, but I use a steel one as a tool: it provides a bit of extra leverage on hex wrenches, when needed.

I have swept bars on both...
11-25-20, 10:54 PM
Replies: 66
Views: 3,630
Posted By ofajen

Oops! Thanks! I meant to link this one... ...

Oops! Thanks! I meant to link this one...

https://www.bikeforums.net/classic-vintage/1127647-vintage-mtb-upright-bar-urban-bike-conversions.html

I was thinking of a vintage MTB like my...
11-25-20, 09:41 PM
Replies: 66
Views: 3,630
Posted By ofajen

You might check out some of the bikes in this...

You might check out some of the bikes in this thread. A vintage MTB with comfy bars is a lot of fun on smooth trails and gravel roads. Might not be expensive enough for you though.
...
11-25-20, 10:59 AM
Replies: 151
Views: 5,642
Posted By ofajen

Perhaps. But there may be a lot more to cadence...

Perhaps. But there may be a lot more to cadence in cycling. For example, you might want to read this article by Tom Danielson.
...
11-16-20, 08:30 AM
Replies: 33
Views: 1,164
Posted By ofajen

No. No point in insurance on our old bikes. ...

No. No point in insurance on our old bikes.

Otto
11-08-20, 05:24 PM
Replies: 37
Views: 1,802
Posted By ofajen

Actually I can pick two that are all three: SS...

Actually I can pick two that are all three: SS and fixed gear. 😊

Otto
11-01-20, 09:41 AM
Replies: 278
Views: 8,771
Posted By ofajen

I took rather a lot of physics back in college in...

I took rather a lot of physics back in college in the 80s, but Iíve made almost a full recovery from the trauma! I did publish a couple of minor articles in condensed matter physics while in grad...
10-31-20, 08:31 PM
Replies: 278
Views: 8,771
Posted By ofajen

Iíve made a change of that type recently by...

Iíve made a change of that type recently by changing from drop bars to touring bars. Now on the MTB, it was firstly because the greater wheel flop meant that handling was a bit sketchy with drop...
10-31-20, 07:58 PM
Replies: 278
Views: 8,771
Posted By ofajen

Yup, cubewheels, tomatocoupe, Jobst Brandt...

Yup, cubewheels, tomatocoupe, Jobst Brandt (posthumously), omniwattcalculator, coupeís published textbook and I are conspiring to mislead the good readers here that the power requirement in a...
10-31-20, 10:30 AM
Replies: 278
Views: 8,771
Posted By ofajen

One last try: yes, the force is the same. The...

One last try: yes, the force is the same. The power requirement is the dot product of force and rider speed. So the power requirements are not the same.

If I straddle the bike and stand in a 60...
10-30-20, 12:22 PM
Replies: 278
Views: 8,771
Posted By ofajen

As noted in the equation I gave, drag (the...

As noted in the equation I gave, drag (the product of k, A and v**2) is proportional to the square of relative wind-speed, v, while power is the product of the inline portion of that drag and rider...
10-30-20, 08:32 AM
Replies: 278
Views: 8,771
Posted By ofajen

That link doesnít work for me, but the result is...

That link doesnít work for me, but the result is correct.

The air drag component of cycling work is k(a)*A*v**2*s, where s is the bicycle speed on the road, k(a) is the air resistance coefficient,...
10-29-20, 10:41 AM
Replies: 278
Views: 8,771
Posted By ofajen

I think we decided that cycling is a poor form of...

I think we decided that cycling is a poor form of exercise anyway, so why bother with a heavy bike? 😊

Otto
10-28-20, 07:09 PM
Replies: 22
Views: 899
Posted By ofajen

I have that setup on my Schwinn and it works...

I have that setup on my Schwinn and it works fine. Iím running a cheap 1/8Ē freewheel and 3/32Ē road chainring, so I have to have the 1/8Ē chain.

Interestingly, the high end freewheels from...
10-27-20, 06:52 PM
Replies: 33
Views: 1,807
Posted By ofajen

Iíd be careful about changing the fore-aft saddle...

Iíd be careful about changing the fore-aft saddle position much. That really comes first and then you choose a stem to get the reach right. OTOH, do expect to get a much longer stem if you switch to...
10-26-20, 09:13 PM
Replies: 20
Views: 2,682
Posted By ofajen

Sorry that I canít comment on 650B but I do have...

Sorry that I canít comment on 650B but I do have 700C and 26er, both running SS.

I have 700x32 on the Schwinn. The other bike is a 26er (88 RockHopper). With smooth tires (26x2.0) it is maybe 1/2...
10-24-20, 08:36 AM
Replies: 33
Views: 1,807
Posted By ofajen

Hereís the view down the steering axis on my...

Hereís the view down the steering axis on my vintage MTB with swept back touring bars (Sunlite Elson Roadster):

...
10-23-20, 07:02 PM
Replies: 5
Views: 1,024
Posted By ofajen

Iíd agree that the Jones bar has a lot going for...

Iíd agree that the Jones bar has a lot going for it. Iím using the knockoff version of the Nitto Albatross from Sunlite as a narrower, even more swept alternative to the Jones bar.

With a really...
10-23-20, 08:57 AM
Replies: 18
Views: 687
Posted By ofajen

Back in the day, I had the version with the metal...

Back in the day, I had the version with the metal Campy head. I ran it along the seat tube with the head down at the down tube-BB joint. Very handy to pull out and use to defend against dogs that...
10-22-20, 06:02 PM
Replies: 71
Views: 2,648
Posted By ofajen

It was warm, breezy and sunny. About 30 degrees...

It was warm, breezy and sunny. About 30 degrees warmer than yesterday. Lots of happy people out enjoying one last warm day! :)

Otto
10-22-20, 08:33 AM
Replies: 105
Views: 4,852
Posted By ofajen

Always good to bear in mind! For example, among...

Always good to bear in mind! For example, among others, I try to maximize the portion of a ride that I am standing. It makes the ride more of a weight bearing activity, improves saddle comfort on my...
10-22-20, 07:40 AM
Replies: 105
Views: 4,852
Posted By ofajen

I donít give it much thought. The only hills I...

I donít give it much thought. The only hills I have to get off and run up are so steep Iíd be going that same speed grinding up on a lower gear on the bike (which I donít like anyway) and I bike in...
10-21-20, 09:18 PM
Replies: 105
Views: 4,852
Posted By ofajen

Itís a ďfeatureĒ, not a limitation. :) Otto

Itís a ďfeatureĒ, not a limitation. :)

Otto
10-20-20, 07:38 PM
Replies: 468
Views: 81,108
Posted By ofajen

Have fun. Here is what it looks like on mine from...

Have fun. Here is what it looks like on mine from over the steering axis. Sometimes I grip with some fingers on either side of the brake lever clamp. Sometimes just ahead of the clamp. Sometimes in...
10-20-20, 11:58 AM
Replies: 37
Views: 1,227
Posted By ofajen

Surely the record is in hand already? Otto

Surely the record is in hand already?

Otto
10-20-20, 10:35 AM
Replies: 278
Views: 8,771
Posted By ofajen

I disagree. For me, it is counterproductive to...

I disagree. For me, it is counterproductive to deliberately change a bike to make it harder to ride while getting no benefit out of the change.

I already ride cheap, heavy steel frames from the...
10-20-20, 09:49 AM
Replies: 105
Views: 4,852
Posted By ofajen

Commitment to a single gear. Lighter. Less stuff...

Commitment to a single gear. Lighter. Less stuff in the way (no shifters on h-bars). SS chain spins easier. Less troubled by dust on trails than derailleur. Can stand and coast to comfortably...
10-19-20, 08:26 PM
Replies: 91
Views: 4,487
Posted By ofajen

Sure. But then what, exactly, is the question? :)...

Sure. But then what, exactly, is the question? :)

Otto
10-19-20, 06:54 PM
Replies: 15
Views: 740
Posted By ofajen

Also called Accu-Gage, Iíve had two in the last...

Also called Accu-Gage, Iíve had two in the last 45 years. They are the only gauges Iíve used.

The old one would still work perfectly if i could replace the rubber seal in the stem. OTOH, I really...
10-19-20, 06:45 PM
Replies: 84
Views: 2,763
Posted By ofajen

Actually I have a basically similar bike with...

Actually I have a basically similar bike with touring bars and 42/16 SS built from a vintage MTB and running 26x2.0 or 2.2. The only benefit to switching would be more selection of tires.

Itís...
Showing results 1 to 50 of 164
 


 
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