Robo Pacer Draft Question

Saw some odd behavior with Bernie today - in a couple of places it almost looked like he just teleported through other riders - but reading through the thread, a lag issue could look exactly like that. Bernie’s pace didn’t change, I just went through a short period where I didn’t get updated as often, and when my client (iPad) caught up, it looked like Bernie zipped through a couple of folks because of the difference between where my client thought he was and where he actually was.

The rest of the ride went as expected, it was a smallish pack so drafting wasn’t as great as I wanted, I ended up going off the front and leaving him behind since he was slow going up a slight incline and with a draft, an 85-kg cyclist can stop pedaling on a slight descent and still drop him. (It usually works out that a pack of folks maintain a speed a little faster than Bernie and then it pulls away by accident as much as anything else.)

James, so it looks like there is a minimum power requirement to stay with the pace partners is this correct? Why I say this is, I did a recovery ride with Maria and her power is 165 watts and it seemed that once I went under this power I was off the back of the pace partner group even with the draft. Even if it was only 5-10 watts. When I would maintain the 165 watts or main maintain her w/kg which is 2.2 w/kg I would easily stay with the group or if I did the 2.2 w/kg I would just surge to the front being that I’m 10kg heavier then her…

Today with Genie group (about 10 people) on Tempus Fugit I had 207w average over 1:10:39, average speed 44.4km/h. 52.30km, 77m elevation gain.

Definitely very fast for Genie - nobody was really getting ahead of the robo-pacer today. This average power was what you could do with Constance on tick-tock.

1 Like

When talking about Watts you have to tell us your weight in kg and height in cm and bike setup…otherwise that info isn’t any value to me/us.

I have to do 200W avg with Coco at 80kg and 186cm on a Tron Bike.

Why, a Watt is a Watt (definition here) and is independent of the weight or height of a rider

Because a rider speed in Zwift isn’t that simple to calculate…Chris said that he could do with 207W to hold Constance on Tick-Tock Route. I would need around 280W for that…he must be around 60kg.

Dejan, do you have a ride you can share with either Constant or a higher B pace partner? I would like to see what watts your holding with them.

Could you also share your ride on this form that shows watts and distance.

Genie today on Tempus. 3.2wkg avg at 70kg / 170cm (226 watts). ~100km / 45kph avg

Group size between 10 and 20 I think?

Here you go just tested for you with Genie (3.7Wkg or 277W) on Tempus Fugit…i never do this RP with B or A i save my legs for racing. I do Endurance with Coco.

Dual recording: ZwiftPower - Login
Live stream: Pacer Group Ride: Tempus Fugit in Watopia with Genie - YouTube
At 2:50min in to the stream i reset my Sauce stats so you can follow live what W and Wkg i’m doing and how much Watts Savings i have (Draft %)

1 Like

Isn’t it easier to just van view a few riders with the Pacer?

I was trying to see what watts each of them where putting out. I have noticed for the last few weeks that I would need the same watt output as the pace partner to stay with a required group even in the draft. But since Chris is actually lower then what Constant (315 watts) would be putting out as with Ben who .5 w/kg below the pace partner it begs to question.

I had 257W avg with Genie today…that is 20W less and with 5kg more and 11cm…but just a little faster bike setup.
If the RoboPacer is always in draft you have to do similar Wkg to stay on the wheel…heavier riders less and lighter more Wkg.

1 Like

But it questions what Chris posted. He stayed with Genie at just 207 watts. Genie stays at a steady 277.5 watts. So he would need to be lighter then 75kg to even match that kind of w/kg…

Echo most peoples comments here.
Have been riding the PPs pretty much daily for the past few years and constance daily for the past year and something definitely changed in the past few weeks.

Constance goes waaaaay harder that she used to and regularly drops the group.
For a year ive been relatively comfortable with Constance but past few weeks, absolutely on my limit just to hold wheel.

I even dropped down to Genie to test that and Genie feels like Constance used to be

3 Likes

This is what changed. The roll though that effects the pull of the draft. I too have been a daily rider for the last 5 years and staying with a group requires more effort then it use too…

The Goal:

  • This new version of PD has the goal of creating a more realistic racing experience (compared to IRL racing). The main changes introduced focus on reducing the forward and backwards movement of cyclists in the pack while also reducing the overall speed of larger groups.

We had 45.5km/h avg speed…it’s 1km/h more than what Chris posted. Maybe he is riding in less busy times and there is less traffic :slight_smile:

The effort is completely the same as before to stay with the group.
The Draft % (Watts Savings) with PD3 or PD4 in a big group is exactly the same.

No - it is harder to stay with Genie and Constance now and requires higher watts than before.

3 Likes

I rode it during the KAB group testing and I noticed it right away. The effort definitely changed…

2 Likes