OBRA: OBRA Chat: Tandem climbing

Tandem climbing - now flats

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llsm-@veloski.com

2003-06-10

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...........

I did not find an answer about the 'top end' of a tandem on a flat

surface. I notice that a tandem can move up to 25mph rather easily but

I have not seen many that can maintain speeds into the thirties. Is

this an issue with severe wind resistance that the combined wattages of

both parties cannot overcome?

I was wondering if two champion TT riders have ever doubled up and

beaten the single bike TT records?

........

I'm not sure what the current record on the Old Peoria TT course is, but

back in the early '90s Russell Morton and I (Larry Smith) teamed up and

rode a 50:29 for 40k. I can't quite remember if Karl Maxon did a solo

time faster than that or not. I do know that all three of us were at

various times in our careers National or District TT champions. At the

time Russell and I rode we were both over 40yrs old and Karl was under

30.

And climbing in sync is a lot more than just pedaling together....and

it's a lot more than just riding a lot to learn how to stand

efficiently....anyone truly interested in learning the nuances of tandem

synchro riding...write to me directly, rather than bore the rest of the

OBRA group...

A bientot...riding and smiling near Alp d'Huez France....

Larry

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<DIV>...........</DIV>

<DIV> I did not find an

answer about the 'top end' of a tandem on a flat surface. I notice that a

tandem can move up to 25mph rather easily but I have not seen many that can

maintain speeds into the thirties. Is this an issue with severe wind

resistance that the combined wattages of both parties cannot overcome?

</DIV>

I was wondering if two champion TT riders have ever doubled up

and beaten the single bike TT records? 

........

I'm not sure what the current

record on the Old Peoria TT course is, but back in the early '90s Russell Morton

and I (Larry Smith) teamed up and rode a 50:29 for 40k. I can't quite

remember if Karl Maxon did a solo time faster than that or not. I do know

that all three of us were at various times in our careers National or District

TT champions. At the time Russell and I rode we were both over 40yrs old

and Karl was under 30. 

And climbing in sync is a lot

more than just pedaling together....and it's a lot more than just riding a lot

to learn how to stand efficiently....anyone truly interested in learning the

nuances of tandem synchro riding...write to me directly, rather than bore the

rest of the OBRA group...

A bientot...riding and smiling

near Alp d'Huez France....

Larry 

 

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Pat Sagers

2003-06-10

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I went on a quest yesterday using the analytic cycling web site and started

punching in numbers like crazy. It seems that my theory was wrong. If your

on a hill, say 1.5% grade and up and you double both body weight and wattage

you will arrive at the top as someone half your weight with half your

wattage. I was very surprised that it held true even up to a grade of 15%.

If, however, at 1% or less you actually go faster by doubling wattage and

weight. This probably has to do with power to air surface ratio coming into

play.

So my conclusions are what a lot of my replies generated; that it's mostly

climbing inefficiency of 2 riders trying to work as one plus a ton of other

little things that add up to slower climbing.

I guess a person can add 20lbs more easily than gaining the wattage to go

with it.

I did not find an answer about the 'top end' of a tandem on a flat surface.

I notice that a tandem can move up to 25mph rather easily but I have not

seen many that can maintain speeds into the thirties. Is this an issue with

severe wind resistance that the combined wattages of both parties cannot

overcome?

I was wondering if two champion TT riders have ever doubled up and beaten

the single bike TT records?

Thanks

NOTICE: This communication may contain proprietary or other confidential

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I went on a quest yesterday using the analytic cycling web site and started punching in numbers like crazy. It seems that my theory was wrong. If your on a hill, say 1.5% grade and up and you double both body weight and wattage you will arrive at the top as someone half your weight with half your wattage. I was very surprised that it held true even up to a grade of 15%. If, however, at 1% or less you actually go faster by doubling wattage and weight. This probably has to do with power to air surface ratio coming into play. 

So my conclusions are what a lot of my replies generated; that it's mostly climbing inefficiency of 2 riders trying to work as one plus a ton of other little things that add up to slower climbing.

I guess a person can add 20lbs more easily than gaining the wattage to go with it.



I did not find an answer about the 'top end' of a tandem on a flat surface. I notice that a tandem can move up to 25mph rather easily but I have not seen many that can maintain speeds into the thirties. Is this an issue with severe wind resistance that the combined wattages of both parties cannot overcome? 

I was wondering if two champion TT riders have ever doubled up and beaten the single bike TT records?



Thanks 



 

 

NOTICE: This communication may contain proprietary or other confidential business information of Orcom Solutions, Inc. If you are not the intended recipient or believe that you may have received this communication in error, please reply to the sender indicating that fact and delete the copy you received. In addition, you should not print, copy, retransmit, disseminate, or otherwise use the information. Thank you. 

 

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