kcjchang wrote: »

bsexton3 wrote: »

rvoodoo wrote: »

Usually I've done a 1.5-2 hour ride that day that tracks at burning around 2200 calories, so you'd think that would be a wash eh? But the scale never agrees!

I know this forum is to be pictures of bikes, and when I figure out how to post pictures, I will. But wanted to comment on this. I am 6'1" and 230 lbs. When I ride without my HRM, my Garmin gives me about 900 calories an hour. When I wear the HRM, it is usually around 550 on the trainer and 650 on the road. You might be figuring the calories high. If your not using a HRM, get one.

Hornsby wrote: »

I do believe you are figuring your calorie burns too high. I have been riding for a long time and am lucky to burn 700 per hour on the road. I maintain a 21mph average.

I use the empirical speed to power relationship published by Kurt Kinetics (virtual power or VP) to calculate calories based on work, using IpBike to record second-by-second stats. With a setting of 22% efficiency, an one hour ride on trainer at ~18.4 mph I'm burning around 850 Cal. I'm 174ish 5'8". On the road it's less due to constant stop and go, and the VP spikes to much. Be careful of HRM, it needs to be calibrated to the user. Tracking by power is as close as you can get (assuming the right efficiency; I haven't test mine so it's a shot in the dark but the deviations are not that drastic).

Here is the challenge with those numbers. MPH is meaningless without a power figure accurately aassociated with the effort. So HR become the default go to value.

Think in these terms, set everything up and twist the tensioner one more full turn. You have just increased the effort by X. Now go ride at 18.4 MPH average...next time change that tension and put more air in your tire....effort changes again. If you ride at the mentioned 18.4 MPH the workout has changed and associated data would / should change.

This is getting off topic for the original thread. Maybe there should be a thread on trainers and workouts / calorie burn / HR / cadence / time / watts etc...

My new commuter. Trek 7.5 FX. Rack, fenders, Wolftooth single ring, Time ATAC 8 Carbon pedals, Barfly mount. Sweetness.

Okay. You can't see much of my bike. More importantly, you get how I feel about her.

I just got her. She's a 2015 Specialized Roubaix Di2 Disc. It has ruined me! I highly suggest that you DO NOT test ride one unless you intend to buy one!

Here is my US Postal Trek. I'll have to get a picture of my Focus when I get it out of the shop. Tune up before riding season.

My Stable


Custom steel 29er from WaltWorks - typically run SS, geared for the occasional race




trailbike - Yeti ASR-5



older pic of my roadie, but you get the idea - Specialized Roubaix




tri bike - Cervelo P2

I don't have this particular bike anymore, but I found this photo of it today in all its accessorized glory and thought ya'll might get a kick out it this...

Or 'Heavy Vehicle'... I'm sure I wouldn't be wanting to peddle that up an kind of hill, even with a little 'stoker' on the buddy bike behind!

Time for a vasectomy mate before things get out of hand

CX - commute bike(Giant)
105 Stock with disk brakes



Pride and joy - Fair weather bike
Full 6800 Ultegra (mechanical)


Apologies for the wrong way round only noticed after the fact

Bike fit and pickup this evening