100m@20mph - 100m@25mph
100m@20mph - 100m@25mph
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Discussion

AndStilliRise

Original Poster:

2,295 posts

145 months

Wednesday 17th August 2016
quotequote all
Having done 20.5mph@Ride100 i want to try and have a push on and see if i can do the same distance at 25mph. Would anyone have any idea how this can be achieved?

I averaged 130bpm for the duration and usually for a marathon i can average between 150bpm and 160bpm, so i know there is more performance from me to come on the bike.



With kind regards, SK.







sidicks

25,218 posts

250 months

Wednesday 17th August 2016
quotequote all
AndStilliRise said:
Having done 20.5mph@Ride100 i want to try and have a push on and see if i can do the same distance at 25mph. Would anyone have any idea how this can be achieved?

I averaged 130bpm for the duration and usually for a marathon i can average between 150bpm and 160bpm, so i know there is more performance from me to come on the bike.

With kind regards, SK.
I'm no expert having completed Ride100 for the first time this year, but my advice would be to pedal faster.

Magic919

14,459 posts

230 months

Wednesday 17th August 2016
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I'm not convinced by the BPM theory. Have you been tested for VO2 max etc on a bike? I'm sure my wife's figure for cycling was lower than when running.

Other than my aero suggestion the other day, you could do some speed work on the bike, just as for running.

Sandersports

181 posts

218 months

Wednesday 17th August 2016
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Dont overthink it , it can be very simply done.

1: Do more training .
2: Lose weight
3: Get as aero as possible

Concentrate on them 3 factors for 1 year and the chances of a performance hike is almost guaranteed .


pembo

1,244 posts

222 months

Wednesday 17th August 2016
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New bike.... the answer is always to get a new bike wink

Porsche911R

21,146 posts

294 months

Wednesday 17th August 2016
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work out your max heart rate, I can keep going for miles at 175bpm so you quoting 135 means nothing to anyone.

Wheels are key imo above 20mph, and so is aero,

So buy a nice set of wheels go aero on the bike and race at 80% max heart rate allowing 3x 95% runs for hills and the final sprint.

buy a new helmet and an aero suit also. Specialized S-Works Evade imo is the best road helmet without looking like a cock.

aero is key, not sure why it's taken so long for bikes / manafactures to catch on !!

fuel up, and also don't over eat, there are a few sites to work out what you need to eat.

carb up before and try and go for 1gramm carbs a minute there after, many people OVER eat !!

Edited by Porsche911R on Wednesday 17th August 17:56

mcelliott

10,471 posts

210 months

Wednesday 17th August 2016
quotequote all
So is this effort to be solo or in a group? I assume your 20mph effort in your Ride 100 was in a group. Nothing could be easier than riding at 20mph in a group for 100 miles. A little turn at the front, sit in at the back, that sort of thing. 100 miles solo, averaging 25mph, is a massive difference. Go out and find your local chain gang, get used to covering 26 or 27 miles in one hour, and then report back.

Edited by mcelliott on Wednesday 17th August 18:13

AndStilliRise

Original Poster:

2,295 posts

145 months

Wednesday 17th August 2016
quotequote all
mcelliott said:
So is this effort to be solo or in a group? I assume your 20mph effort in your Ride 100 was in a group. Nothing could be easier than riding at 20mph in a group for 100 miles. A little turn at the front, sit in at the back, that sort of thing. 100 miles solo, averaging 25mph, is a massive difference. Go out and find your local chain gang, get used to covering 26 or 27 miles in one hour, and then report back.

Edited by mcelliott on Wednesday 17th August 18:13
Solo effort. 100@20mph

AndStilliRise

Original Poster:

2,295 posts

145 months

Wednesday 17th August 2016
quotequote all
Porsche911R said:
work out your max heart rate, I can keep going for miles at 175bpm so you quoting 135 means nothing to anyone.

Wheels are key imo above 20mph, and so is aero,

So buy a nice set of wheels go aero on the bike and race at 80% max heart rate allowing 3x 95% runs for hills and the final sprint.

buy a new helmet and an aero suit also. Specialized S-Works Evade imo is the best road helmet without looking like a cock.

aero is key, not sure why it's taken so long for bikes / manafactures to catch on !!

fuel up, and also don't over eat, there are a few sites to work out what you need to eat.

carb up before and try and go for 1gramm carbs a minute there after, many people OVER eat !!

Edited by Porsche911R on Wednesday 17th August 17:56
Thanks that helps.


AndStilliRise

Original Poster:

2,295 posts

145 months

Wednesday 17th August 2016
quotequote all
Thanks for all your replies.

okgo

42,085 posts

227 months

Wednesday 17th August 2016
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Not sure if I am reading right, but averaging 20mph on a 100mph ride solo is a tough thing to do, if you got round the Ride100 in a group at 20mph then you'll likely currently be able to do it 17.5-18 perhaps, closed roads obviously help hugely too, so a good aim would be 100 solo around normal roads perhaps.

Ride more, ride harder, mix it up - mcelliot is right about the chaingang, if you've got any talent it will be brought on quick by some high intensity work.

Contrary to the above, nothing negative is going to come from overeating. And towards the end of a long ride, actually you'll probably find the 1g of carbs per minute isn't enough after you have exhausted all your glycogen.

ALawson

8,054 posts

280 months

Thursday 18th August 2016
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100 miles at 25mph I would have thought (on your own) on a normal road bike would have you in the top 10-15 in the National 100m TT I would have thought.




esuuv

1,420 posts

234 months

Thursday 18th August 2016
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Like for like you are going to need to produce and awful lot more power for a 25% increase in speed - not all that far off double as power is proportional to the cube of your velocity.

As that's fairly unlikely to happen you have to look at everything you can do to reduce your power requirements - so the mass you have to propel (your weight and the bike), frontal area (get down low), you and the bikes drag (aero kit) - etc etc etc (all the things British Cycling call marginal gains)

Ride 100 has a couple of climbs, so a course without those would help a lot - the other thing is that even though you might not have been working with a group on ride 100 to do that kind of pace you must have been riding with other people at similar pace and this will have made a difference - pro triathletes have to be 10m between front wheels (so about an 8.5 meter gap) - tests have shown them saving 10-15 watts even at that distance, and they all discuss being left behind by packs.




Magic919

14,459 posts

230 months

Thursday 18th August 2016
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I work with a woman that does the 100 TT in just over four hours on a suitable bike.

For the OP, there's no need for a solo effort in the Ride 100. He just needs to keep up with a suitably fast group.

snotrag

15,624 posts

240 months

Thursday 18th August 2016
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From 20mph to 25mph is a massive jump.

As above, its not a linear increase in effort/power required. Its huge.

Magic919

14,459 posts

230 months

Thursday 18th August 2016
quotequote all
But what is it? About 50% increase in output if no other changes? Just back of an envelope stuff, as there are probably too many variables for a proper calculation.

lukefreeman

1,502 posts

204 months

Thursday 18th August 2016
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lol.

You're not riding 25mph for 100 miles unless:

. You're in a pack.
. You're on a TT bike.
. You've got serious tailwind.
. You're a break away expert who can sit at a decent power, all day.

Out of curiosity, do you ride with power? How much you weigh?

I've got a pretty good idea of what you need to output to hold 25mph for 4 hrs, assuming absolutely no hills.

okgo

42,085 posts

227 months

Thursday 18th August 2016
quotequote all
I'll say that nearly nobody outside of probably a pro is capable of riding 100 mile around normal roads (citing time trials is not really the same given they're mainly on main roads with traffic sucking you along) at 25mph average, to average 20mph for 100 miles over normal roads takes me probably around 260w for 5 hours which is not all that easy.

Playing with the bikecalculator app it seems to suggest that it requires 170w to ride on pan flat on the drops at 74kg on a lightish roadbike at 20mph. If you keep all things the same then to ride at 25mph requires just over 300w.

So while those figures are based on riding in a perfectly flat, windless place, its still quite clear too see how much of an increase in power you need to add 5mph avg speed. And of course the normal roads are not perfectly flat, windless, traffic free places.




Kawasicki

14,355 posts

264 months

Thursday 18th August 2016
quotequote all
okgo said:
I'll say that nearly nobody outside of probably a pro is capable of riding 100 mile around normal roads (citing time trials is not really the same given they're mainly on main roads with traffic sucking you along) at 25mph average, to average 20mph for 100 miles over normal roads takes me probably around 260w for 5 hours which is not all that easy.

Playing with the bikecalculator app it seems to suggest that it requires 170w to ride on pan flat on the drops at 74kg on a lightish roadbike at 20mph. If you keep all things the same then to ride at 25mph requires just over 300w.

So while those figures are based on riding in a perfectly flat, windless place, its still quite clear too see how much of an increase in power you need to add 5mph avg speed. And of course the normal roads are not perfectly flat, windless, traffic free places.
25mph average for 4 hours is seriously quick.


paulrockliffe

16,557 posts

256 months

Thursday 18th August 2016
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The heart rate thing isn't relevant. You'll never manage the higher running rate while you're on your bike because the physiology is so different. The higher heart rate isn't because you're a better runner and you just have to get better on the bike to get your heart rate up. If anything your heart rate will drop for the same amount of effort if you get better at biking.

In both cases it's not your heart that is the limiting factor. It's lower on the bike for the same effort because you're sat down, running makes it harder to pump the blood than cycling because the impact causes extra contractions in the legs that reduce the opportunity for blood to circulate. In both cases your oxygen delivery will be broadly similar, it's just that running there's higher resistance to overcome to achieve that rate of delivery.

Assuming this wasn't on a aero'd TT bike etc, 20mph solo over 100 miles is pretty good going, 25mph is quite a big jump in class without the TT bike and would put you right up there. To get there you probably need to at least double your weekly mileage and get on a chain gang twice a week that goes at 27+ mph, a couple of years down the line and you might be somewhere near maybe.