Did you do this through the Tacx app or in Zwift? How does it work? I kinda want to do one as I've never done one before, but tbh I'm kinda scared of it! Not helped by your comments! ha ha. How do they work and how are they different to what Zwift tells you from a race. (I think mine is around 209W from races)
Yup, do it through Zwift. FTP tests are something... Erm. Hard to explain. Most of us dread them as we utterly know how to ride them and how much is involved to utterly empty yourself over 20 minutes. If you're doing it right, it hurts! As you're new to them and slightly fatigued then I say just go for it!
FTP tests, or more accurately a 20 minute all out effort, are different to a race effort. A Zwift race should be much more conserved, with you saving energy for large surges, climbs and the finish. An FTP test is more similar to a TT type effort - totally solo with focus on sustaining the maximum power you can for 20 minutes.
You're new to riding the turbo, so you still won't be at your optimum in efficiency (pedal stroke/position/effort), so your FTP result will not be 100% accurate. But it's a starting point, the sooner you get one, the better really as you can then do training sessions based off it and them actually having the desired effects. Much the same way as I personally make sure I'm not super rested for an FTP test, as my usual/standard state is fatigued. If I FTP test'd more rested than 'normal' then my increased FTP result would make all FTP based training I do too hard and I'd then be overly fatigued or failing them...
When I begin turbo riding in the autumn/winters previous years I've always tried to do an FTP test early, but would quite regularly fail them as the effort was so hard and I wasn't used to pushing myself for that intensity for so long. Now I'm turbo riding much more through the year, I'm testing less but am putting similar sustained efforts into riding to have a rough ballpark idea, which is usually accurate enough - as I don't do a huge amount of FTP based training.
I usually then tweak the intervals if I'm finding them too hard to avoid blowing myself up and having to fail the session...
What trainers do you guys use? I had to sell my Planet X road bike a while ago and been massively missing having a road bike (especially carbon) with just my Brompton, so looking at getting a trainer for Zwift as well as a new bike. Ideally i'd like either a trainer where i just take the rear wheel off, so when I want to get back on the road I'm not on a trainer tyre. Otherwise I get two identical rear wheels to easily swap out. Any recommendations? Was looking at the Elite Turbo Muin which looks interesting.
Current is a Tacx Flux v1. Fairly ok trainer, the Flux S or v2 is a better unit. The Directo is/was a better unit than the Flux v1 (more accurate power), but not heard much more about them recently. If I was to buy the same trainer/spend as much again I'd probably go for the KICKR Core, but there's nothing wrong with any of those. I would always recommend a direct drive if you're doing any serious training/volume. Inaccuracy of wheel-off, additional wheels/tyres required and things like wheel slip are really valid reasons to avoid using one. Especially when a direct drive can be had second hand for similar money to a good wheel off.
I recently got a Tacx Bushido, which was only £270 on Wiggle, which seemed a good price. I did a power test yesterday, but when I tried the 45 minute one, I think it might be cause i was on ERG (or whatever it's called) when it cranked the resistance up, it felt like something was slipping.
An ok price, but they're quite an old unit. Unlikely to be many firmware updates.
You'll want ERG mode for everything. If you're Zwifting there's no point not having it controlled by the client.
I've no idea how much the power ramp/ERG mode is effected by running it away from power if you are. Probably worth checking. Wheel slip is one of those things - you'll always get it with big intervals as much of the time the power curve is too strong for the tyre:wheel interface. If you don't get it, then you've probably got your unit too tight anyway... Final thing would be to keep consistent tyre pressure. I always used 100 PSI on the Tacx trainer tyre and generally checked it once a week or more.
On wheel trainers are better with sustained power, than steep intervals. The power curve on any/all of them is not strong or steep enough to do real sprint intervals. Even surges can overwhelm them due to the power 'delay' (lack of steepness in the curve or speed in resistance response). I actually used this to my advantage Zwift racing as I could surge huge power efforts from it, which even direct drive opponents couldn't match, buy 'overpowering' the unit until it caught up. And I'm not particularly powerful. It became quite a large part of my racing tactic, so when I switched to direct drive, it was like hitting a wall. I just couldn't surge or overpower it. I lost my 'edge' when it came to racing, along with a reduction to my FTP (~290W down to ~240W). When I'd got used to the direct drive my FTP was probably more accurate around ~265W.
I found that weird too. The warmup and intervals were all at low resistance so doing almost 200w felt really easy with high cadence but as soon as the 20 min test started the resistance turned up so much it was almost like 230w was the lowest I could do while keeping my legs turning at a reasonable speed
The intervals at the start of a 20 minute test are to sap your energy and take your edge off, they're there to get the blood flowing, while also adding some stress so you don't blow yourself up as soon as you start. With ERG mode enabled, it should be 'tweaking' the power level to what it thinks you can sustain, also probable current FTP setting you have, so worth checking what that is. Keeping the cadence up, it should adjust, but if it doesn't you might have hit a resistance 'floor' for that gear, so change down a couple of cogs and it should stabilise power again at the cadence you're riding at.