coggan track srm

cassette player said:

coggan, are you planning on lending out your track srm for 2007? it been great that you've been doing it in the past, and i wanted to see if you were going to continue doing it

Believe it or not, to date I've been completely unsuccessful in getting anybody to use the dang thing...people say they want to borrow it, but once it's in their hands never seem to actually getting around to putting it on their bikes and collecting data.

Anyway, I'm up in the air as to whether I want to continue letting others use my >$3k "toy", but if you'll email me your proposal at acoggan at earthlink dot net I'll consider it.

acoggan said:

Believe it or not, to date I've been completely unsuccessful in getting anybody to use the dang thing...people say they want to borrow it, but once it's in their hands never seem to actually getting around to putting it on their bikes and collecting data.

Anyway, I'm up in the air as to whether I want to continue letting others use my >$3k "toy", but if you'll email me your proposal at acoggan at earthlink dot net I'll consider it.

That is unbelieveable! What about Warren?[img]cyclingforums.comtongue.gifOpen ↗[/img]

Alex Simmons said:

That is unbelieveable! What about Warren?[img]cyclingforums.comtongue.gifOpen ↗[/img]

Master fatties aren't elgible, as they can afford to buy their own powermeters.

acoggan said:

Master fatties aren't elgible, as they can afford to buy their own powermeters.

What about fatties who are coaches, and thus poor?

jbvcoaching said:

What about fatties who are coaches, and thus poor?

You're not poor, you've made a lifestyle choice. 😄

Still keen to get my hands on an SRM for our Track Season for a very talented young girl I coach for pursuiting. Trust me, I would get you heaps of excellent data!!!

Hamish Ferguson
Cycling Coach

fergie said:

Still keen to get my hands on an SRM for our Track Season for a very talented young girl I coach for pursuiting. Trust me, I would get you heaps of excellent data!!!

Hamish Ferguson
Cycling Coach

Actually, I'm not that interested in gathering additional data (no need, since people like you kindly share it w/ me w/o being "bribed" with the use of an SRM 😄). Instead, my goal was to try to help promote track cycling in the US, by hopefully getting some young up-and-comer addicted to going round-and-round. You Kiwis don't seem to need such help.

acoggan said:

Actually, I'm not that interested in gathering additional data (no need, since people like you kindly share it w/ me w/o being "bribed" with the use of an SRM 😄). Instead, my goal was to try to help promote track cycling in the US, by hopefully getting some young up-and-comer addicted to going round-and-round. You Kiwis don't seem to need such help.

Define "young" 🙂 I'm 28 and in my second year of cycling. In two weeks I'll be living within 10 minutes of the Encino Velodrome and I can't wait to give it a whirl.

acoggan said:

Instead, my goal was to try to help promote track cycling in the US, by hopefully getting some young up-and-comer addicted to going round-and-round.

I guess when you consider Worlds and Jnr Worlds results we do punch well above our weight. All with bugger all funds.

Hamish

acoggan said:

Master fatties aren't elgible, as they can afford to buy their own powermeters.

Doc, I have a friend that I let use one of my bikes last season. He is a former 2 time Paralympian trackie(driver) Cat 2 road , has world cup mtn bike experience and Nats points racer as well as a first class mechcnic. He has been left with an old 8 speed(my mavics) and an erg. He sold all his stuff after his wife died (also very well known)and is raising 2 kids. He would use it on the erg indoors only and return it in the spring When I drag him out racing. He is well known around TTown etc.. Sales pitch over. Pm if interested

acoggan said:

Actually, I'm not that interested in gathering additional data (no need, since people like you kindly share it w/ me w/o being "bribed" with the use of an SRM 😄). Instead, my goal was to try to help promote track cycling in the US, by hopefully getting some young up-and-comer addicted to going round-and-round. You Kiwis don't seem to need such help.

Well, at 27, I'm younger than Pureshot 🙂 . No job right now as I'm giving the cycling and sleeping full commitment in hopes of getting a job somewhere in the industry. Have the ability/time to get to ADT at least once a week. Based on your powerprofiling I'm a potential contender in the kilo and the pursuit if I can get my cda dialed in. I will solemnly swear to break your 11.5w/kg 1 minute power ceiling on your cranks.

joemw said:

Well, at 27, I'm younger than Pureshot 🙂 . No job right now as I'm giving the cycling and sleeping full commitment in hopes of getting a job somewhere in the industry. Have the ability/time to get to ADT at least once a week. Based on your powerprofiling I'm a potential contender in the kilo and the pursuit if I can get my cda dialed in. I will solemnly swear to break your 11.5w/kg 1 minute power ceiling on your cranks.

The kilo is a subject that interests me. How close are you to the 11.5.wkg now? How are you mesuring current power .? If your close you should already have an SRM on you SPIKE bike.🙂

Billsworld said:

The kilo is a subject that interests me. How close are you to the 11.5.wkg now? How are you mesuring current power .? If your close you should already have an SRM on you SPIKE bike.🙂

i don't see how w/kg are that useful when relating to the track, its flat, and it seems like someone who weighs 65kg and someone who weighs 80kg would be doing about the same power.

cassette player said:

i don't see how w/kg are that useful when relating to the track, its flat, and it seems like someone who weighs 65kg and someone who weighs 80kg would be doing about the same power.

Forgive me for not engaging in a debate on this subject. Its been done to death by people smarter than I..............Ok I will play a little. At that watts per kg , regardless of your feelings on the importance of watts per kg; it would make said rider really.....really fast regardless of the Kg........................... A world class kilo rider needs to move the bike from 0mph to 40+mph and then hang on untill blood starts to come out of you ears. That said, better kilo riders are around 200 lbs and would have to average around 1000 watts + - for the event..............AC, have you ever seen any results on ave watts for a 3:30 masters 3000?

cassette player said:

i don't see how w/kg are that useful when relating to the track, its flat, and it seems like someone who weighs 65kg and someone who weighs 80kg would be doing about the same power.

As Bill points out, this ground has been covered before, but one more time for the sake of prosperity: W/kg is a better predictor of performance in events such as the kilo or match sprint than W alone because 1) mass [censored] acceleration (esp. important in the kilo and even more so, the 500 m), and 2) aerodynamic drag depends in large part on body size, of which mass is an indicator. For example, in this study of French world class match sprinters:

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=16237619&query_hl=1&itool=pubmed_DocSum

the correlation between projected frontal area and body mass was 0.76.

Billsworld said:

AC, have you ever seen any results on ave watts for a 3:30 masters 3000?

Yes, but the power required to clock a 3:30 3 km pursuit will vary significantly depending upon factors such as the rider's CdA, the track surface (and hence rolling resistance), the tightness of the turns, etc. So, the best I can tell you is that it would usually be in the 450-550 W range (but if you can provide the necessary data, I can predict the exact requirement down to a watt or two).

acoggan said:

Yes, but the power required to clock a 3:30 3 km pursuit will vary significantly depending upon factors such as the rider's CdA, the track surface (and hence rolling resistance), the tightness of the turns, etc. So, the best I can tell you is that it would usually be in the 450-550 W range (but if you can provide the necessary data, I can predict the exact requirement down to a watt or two).

It took me 482 watts to do a 3:36 in practice at sea level on a low banked 333 track. It took me 422 to do a 3:53 on a high (well, high to me!) banked 250 track. Of course the 3:53 was my first ever race, 4th ever track ride, and in the first 12 seconds of the race I averaged 10 watts and covered 3 meters (at least as measured on the black line)... I wouldn't call my start ideal though...

Scott

acoggan said:

Yes, but the power required to clock a 3:30 3 km pursuit will vary significantly depending upon factors such as the rider's CdA, the track surface (and hence rolling resistance), the tightness of the turns, etc. So, the best I can tell you is that it would usually be in the 450-550 W range (but if you can provide the necessary data, I can predict the exact requirement down to a watt or two).

I guess weight and frontal area, but I can only guess on the second. Thats more or less what I thought. My legs hurt just thinking about it. Thanks. Thanks scott, I didnt see that response. Fast!!

scotmart said:

It took me 482 watts to do a 3:36 in practice at sea level on a low banked 333 track. It took me 422 to do a 3:53 on a high (well, high to me!) banked 250 track. Of course the 3:53 was my first ever race, 4th ever track ride, and in the first 12 seconds of the race I averaged 10 watts and covered 3 meters (at least as measured on the black line)... I wouldn't call my start ideal though...

Scott

Hey, at least you can laugh about it now! 😄

Let's see, 3:53 x 422 = 98326 J, and 0:12 x 10 = 120 J, so your average power once you got going was (98326-120)/(3:53-0.12) = 444 W. That's 38 W lower than during your 3:36 effort, which should have resulted in your covering the distance about 11 s slower. Yet, you were only 5 s slower...which is consistent with the fact that the indoor wood track at the ADT Event Center should be a faster track than the outdoor concrete track upon which you did your practice effort.