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Search: Posts Made By: gregf83
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09-06-21, 09:48 PM
Replies: 8
Views: 851
Posted By gregf83

They don't really have to be 'smart' to do that....

They don't really have to be 'smart' to do that. All lithium chargers will start with a constant current until the battery voltage reaches about 4.2V/cell. After that the voltage will be held...
09-05-21, 11:15 AM
Replies: 255
Views: 8,244
Posted By gregf83

I wouldn't assume the extra year of warranty...

I wouldn't assume the extra year of warranty implies higher durability. They're both pretty reliable and the additional cost to Shimano of an extra year of warranty is likely under 1% of the sales...
09-01-21, 08:07 PM
Replies: 109
Views: 4,998
Posted By gregf83

I had this 964 for 17 years and traded it for a...

I had this 964 for 17 years and traded it for a Tesla this week. It's spent most of the last few years in my garage so it was time to let someone else enjoy it.
...
08-20-21, 11:20 PM
Replies: 61
Views: 2,973
Posted By gregf83

I find riding fast enjoyable. Whether it’s riding...

I find riding fast enjoyable. Whether it’s riding hard with a tailwind or riding in a tight pace line with other riders. Best of all is a small group of 4 to 6 riders all on the rivet.
08-15-21, 09:08 AM
Replies: 24
Views: 5,512
Posted By gregf83

If you're in SF you've got no shortage of hills...

If you're in SF you've got no shortage of hills to go all out on!
08-11-21, 01:09 PM
Replies: 389
Views: 13,868
Posted By gregf83

The source is in my earlier post, just click on...

The source is in my earlier post, just click on the name of the paper. The figures in the paper are for Gross Efficiency (GE) and are useful for comparing trained and untrained athletes. Using gross...
08-11-21, 10:39 AM
Replies: 389
Views: 13,868
Posted By gregf83

Turns out my memory wasn't correct, Differences...

Turns out my memory wasn't correct, Differences in efficiency between trained and recreational cyclists (https://pubmed.ncbi.nlm.nih.gov/18059575/) found experienced cyclists were more efficient....
08-10-21, 11:36 PM
Replies: 24
Views: 2,023
Posted By gregf83

There’s little value in training to ride at a...

There’s little value in training to ride at a particular cadence so I don’t see how a metronome would be helpful. If you want to increase your cadence you could either get an inexpensive cadence...
08-08-21, 10:48 AM
Replies: 5
Views: 1,421
Posted By gregf83

Depends entirely on how fast you're riding those...

Depends entirely on how fast you're riding those 24 miles. Once the battery voltage gets close to 3V/cell the internal resistance goes up and the voltage will drop quickly if you continue to draw the...
Forum: Road Cycling
08-08-21, 10:41 AM
Replies: 39
Views: 3,442
Posted By gregf83

I would definitely put the 34 on. Made a trip to...

I would definitely put the 34 on. Made a trip to Girona a couple years ago and didn't think we'd have steep hills so only had a 25 on the back. Ended up climbing some reasonably long 12% hills. For...
08-08-21, 08:47 AM
Replies: 26
Views: 1,797
Posted By gregf83

I don’t recall ever having sore calves from...

I don’t recall ever having sore calves from riding. If I start running I often have a problem where I’ll pop something in my calf and have to take a couple weeks off to heal. During this time I can...
08-03-21, 08:46 AM
Replies: 150
Views: 17,255
Posted By gregf83

The powermeter doesn't measure power wasted by...

The powermeter doesn't measure power wasted by your upper body. It only measures power to the pedals. If you put more power to the pedals and don't change your position you'll go faster. If you lean...
Forum: Road Cycling
07-22-21, 07:51 AM
Replies: 166
Views: 10,359
Posted By gregf83

I’d recommend Josh’s method too if I was selling...

I’d recommend Josh’s method too if I was selling wax :)
Forum: Road Cycling
07-21-21, 05:03 PM
Replies: 166
Views: 10,359
Posted By gregf83

It doesn't stay cold for long when it goes in the...

It doesn't stay cold for long when it goes in the crock pot. After 10 seconds the chain is up to a high enough temperature that the wax remains liquid on the chain when it's removed. I think that's...
Forum: Road Cycling
06-14-21, 07:39 PM
Replies: 73
Views: 5,341
Posted By gregf83

Drop or no-drop the riders in front have a degree...

Drop or no-drop the riders in front have a degree of responsibility for the group behind. That includes avoiding potholes or road hazards and stopping when it's clear the group wouldn't be safe...
06-03-21, 03:21 PM
Replies: 24
Views: 2,591
Posted By gregf83

It's a unique beep different than beeps for other...

It's a unique beep different than beeps for other notifications. I have minimal hearing in my right ear but don't have any trouble hearing normally including going down hills at up to 60kph. On the...
05-27-21, 12:14 PM
Replies: 30
Views: 4,394
Posted By gregf83

It's not perfect but the W' component of the...

It's not perfect but the W' component of the critical power model of Monod Scherrer provides a reasonably close estimation of Anaerobic Work Capacity (AWC) measured in kJ. To measure requires a...
05-24-21, 08:33 AM
Replies: 298
Views: 15,498
Posted By gregf83

If you're cornering close to the limits of...

If you're cornering close to the limits of traction the lean angle defined by your center of gravity will be the same in both cases you've mentioned. The only difference is the speed is different....
05-21-21, 08:45 AM
Replies: 298
Views: 15,498
Posted By gregf83

I got there when I was 4 yrs old without a course.

I got there when I was 4 yrs old without a course.
05-16-21, 12:44 PM
Replies: 292
Views: 13,444
Posted By gregf83

You'd get about the same response if you told...

You'd get about the same response if you told someone they didn't need the nice car they just bought and could travel just as well with a 5 yr old Corolla. Most people are smart enough to buy what...
Forum: Commuting
05-12-21, 09:06 PM
Replies: 18
Views: 4,194
Posted By gregf83

I did this commute for 7 yrs before Covid. You've...

I did this commute for 7 yrs before Covid. You've got less rain so should be doable. I would usually average about 4 times a week during the year as I would need to drive for one reason or another. I...
Forum: Road Cycling
05-05-21, 11:48 AM
Replies: 148
Views: 8,565
Posted By gregf83

You could be right if you're sprinting from a...

You could be right if you're sprinting from a standing start in a parking lot. In a more realistic sprint under race conditions you would be starting your sprint at 55+kph and the actual...
05-01-21, 04:52 AM
Replies: 30
Views: 4,959
Posted By gregf83

Focus on improving your power and forget about...

Focus on improving your power and forget about your HR. There’s no value in having a high HR. I hit my highest HR a couple times a year, usually when it’s hot and I’m dehydrated during a hard effort....
04-26-21, 03:17 PM
Replies: 88
Views: 5,003
Posted By gregf83

My comment was in the context of a video posted...

My comment was in the context of a video posted earlier that had a cyclist riding on a crowded Mup ringing his bell every 5 seconds expecting everyone to clear a path for him. I found it annoying. I...
04-19-21, 05:59 PM
Replies: 42
Views: 3,529
Posted By gregf83

Age has a Minimal Effect on the Impact...

Age has a Minimal Effect on the Impact Performance of Field-Used Bicycle Helmets (https://pubmed.ncbi.nlm.nih.gov/28462479/)
Forum: Road Cycling
04-06-21, 05:47 AM
Replies: 7
Views: 617
Posted By gregf83

If I was visiting your area with a bike I would...

If I was visiting your area with a bike I would use the 50/34 as I see there are some steep climbs (Torr Head) that look interesting. No real advantage to the 52/42.
04-05-21, 02:17 PM
Replies: 106
Views: 7,831
Posted By gregf83

Fixed the link. Below is MvDP's ride data...

Fixed the link.

Below is MvDP's ride data from the last 100km of yesterdays' race. Can't imagine how average speed would be of any use at any time. Most of the time the front groups were in view...
04-05-21, 07:50 AM
Replies: 121
Views: 8,414
Posted By gregf83

Back right pocket. Most phones are waterproof now...

Back right pocket. Most phones are waterproof now so I don’t use any additional protection.
04-03-21, 11:50 PM
Replies: 106
Views: 7,831
Posted By gregf83

Announcers might mention average speed...

Announcers might mention average speed occasionally as they struggle to fill 4 hours of airtime with witty banter but it has zero relevance to the riders. The contenders have one goal and that’s to...
04-02-21, 11:57 PM
Replies: 122
Views: 10,932
Posted By gregf83

It worked for Ross Rebagliati in 1998.

It worked for Ross Rebagliati in 1998.
03-27-21, 11:18 PM
Replies: 50
Views: 5,490
Posted By gregf83

No one builds roads or trails around here with...

No one builds roads or trails around here with natural gravel. It's usually some type of crushed stone in between the two pictures above. Crushed stone packs better.
03-08-21, 03:43 PM
Replies: 123
Views: 9,222
Posted By gregf83

https://www.strava.com/activities/4901472414...

https://www.strava.com/activities/4901472414 Ridiculous numbers.
Forum: Road Cycling
03-06-21, 08:58 PM
Replies: 26
Views: 6,466
Posted By gregf83

I like the ability to easily use street view with...

I like the ability to easily use street view with RWGPS. I like to look at where I'm planning to ride. Strava gave up on using Google maps a few years ago so not street view.
Forum: Road Cycling
03-05-21, 09:23 AM
Replies: 21
Views: 2,966
Posted By gregf83

I always try to ride lomg climbs at FTP. Doesn’t...

I always try to ride lomg climbs at FTP. Doesn’t always happen depending on what precedes the climb but that’s my goal on anything over 30min.
03-04-21, 08:53 AM
Replies: 30
Views: 6,451
Posted By gregf83

There’s no way you can know that. Maybe you...

There’s no way you can know that. Maybe you finish the workout a little fresher and can do more the next day. It’s just not that precise that you need to hit a target within 1%. Even it it was...
Forum: Commuting
03-02-21, 08:37 PM
Replies: 62
Views: 6,050
Posted By gregf83

Certainly doable. I was doing 40 mi round trip...

Certainly doable. I was doing 40 mi round trip for about 7 yrs until Covid and WFH. I mostly sit at work though. I would usually just ride how I felt so Mon-Wed were a little faster than Thur & Fri....
02-28-21, 09:21 PM
Replies: 224
Views: 14,529
Posted By gregf83

Fond memories of our last trip to Girona. Had to...

Fond memories of our last trip to Girona. Had to cancel last year's planned visit to Sicily.

It wouldn't be the same riding these roads solo...
...
02-28-21, 06:04 PM
Replies: 224
Views: 14,529
Posted By gregf83

I don't mind training on my own but group rides...

I don't mind training on my own but group rides and races are more fun. Best are cycling vacations with 5-10 good friends. Riding 4-5 hrs every day, stops for coffee or lunch along the way in some...
02-19-21, 07:01 PM
Replies: 32
Views: 3,930
Posted By gregf83

I think if I weighed 65kg and had an FTP of 375+W...

I think if I weighed 65kg and had an FTP of 375+W I'd need a stronger core but, sadly, my core has always been strong enough without supplemental exercise. I've had my legs get tired/sore or start...
02-17-21, 02:59 PM
Replies: 66
Views: 3,382
Posted By gregf83

Stans instructions for 'Valve Injection' include...

Stans instructions for 'Valve Injection' include removing the core so I think Stans considers valve and stem (with core removed) interchangeable.
Is it possible the larger crystals they include in...
02-15-21, 10:52 AM
Replies: 197
Views: 28,802
Posted By gregf83

Yes, a better conclusion would be that strength...

Yes, a better conclusion would be that strength doesn't appear to be significant a significant factor in Anaerobic Work Capacity. In other words these riders were 'strong enough' for their sport....
02-13-21, 04:37 PM
Replies: 197
Views: 28,802
Posted By gregf83

I just came across an interesting paper,...

I just came across an interesting paper, Comparison of Short-Sprint and Heavy Strength Training on Cycling Performance (https://www.frontiersin.org/articles/10.3389/fphys.2019.01132/full), which...
02-11-21, 07:51 PM
Replies: 15
Views: 1,523
Posted By gregf83

Precision is not that critical. You just need to...

Precision is not that critical. You just need to be in the ballpark. If the target power you come up with is too easy raise the target next time. Similarly, if you're unable to complete the planned...
02-10-21, 08:09 AM
Replies: 197
Views: 28,802
Posted By gregf83

That’s the heart of the question for which there...

That’s the heart of the question for which there isn’t a clear answer. If that hour in the gym is for core work to prevent or eliminate back or neck issues then it’s probably a good idea. If the...
01-28-21, 08:45 PM
Replies: 32
Views: 2,372
Posted By gregf83

5.5mph up an 11% climb is about 970VAM which is...

5.5mph up an 11% climb is about 970VAM which is manageable by most of my riding friends and we're all over 55. The steeper the hill the higher the VAM possible, provided you have the right gearing. I...
01-23-21, 07:48 PM
Replies: 45
Views: 3,454
Posted By gregf83

We have a week of Pro races in the summer which...

We have a week of Pro races in the summer which are well attended by cyclists and non-cyclists. All my cycling friends watch on TV/Internet when available. Most are older and have raced at one time...
Forum: Road Cycling
01-23-21, 01:29 PM
Replies: 147
Views: 9,340
Posted By gregf83

If you're running 23mm tires it's a tradeoff...

If you're running 23mm tires it's a tradeoff between ride quality and possibility of a pinch flat. For me, pinches are more likely to happen when riding in a group when visibility, and ability to...
Forum: Road Cycling
01-23-21, 09:45 AM
Replies: 108
Views: 7,823
Posted By gregf83

’Untrained’ in cycling doesn’t mean he wasn’t...

’Untrained’ in cycling doesn’t mean he wasn’t fit. 19 yr olds have plenty of time for sports. It wouldn’t take long for a fit soccer or rugby player to have decent power on a bike.
01-21-21, 04:24 PM
Replies: 90
Views: 10,434
Posted By gregf83

Absolutely you can bonk riding zone 2. Even in...

Absolutely you can bonk riding zone 2. Even in zone 2 a substantial amount of energy comes from carbs. The higher your FTP the faster you'll bonk.
01-14-21, 05:51 PM
Replies: 81
Views: 16,469
Posted By gregf83

I don't bother tweaking the settings on the...

I don't bother tweaking the settings on the trainer. It's enough that when I see the road tilting up I know to downshift as the resistance is about to go up. I'm not interested in perfect realism...
Showing results 1 to 50 of 146
 


 
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