Hello everyone,


Well I finally bit the bullet brought myself a new bike as a upgrade to my foldable swift. I ended up getting the Sirrus entry model. I really loved the next level up with the carbon forks and disc brakes but I promised myself to say around five hundred and give it a year to see how much riding I will actually do. I am 5' 8" and at the store the attendant initially sized me as a medium but also made me ride a large to double check. Based on his observation, he said I was in between sizes and that either the medium or large would work. On the medium the seat post was fairly high while on the large it was fairly low. The only real big difference I noticed was the fact that the reach was longer on the large. The attendant wasn't really a help. I went with the large. I took the bike to a local trail and I have to say I don't know if I got the right size. The bike rides well but I find myself scooting back quite a bit to try to keep my butt on the saddle and also find myself further down than I expected. Finally, I had a considerable amount of soreness/discomfort after only half hour or so. I literally had to a break every half hour. How much is this due to bike frame size or is something else going on. What should be my next step? Go back to the bike shop and change the size? Different saddle? Get a different bike all together?


Any and all advice appreciated.


Thanks!!

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I purchased an Fx3 about 2 years ago. The first adjustment was the saddle which improved my comfort quite a bit. The one that came with the bike didn’t agree with me. After riding it for a little over a year (which I enjoyed), I took it to another Trek dealer and he put me on the bike attached to a trainer. He had me spin a little and made some measurements. He adjusted my saddle back a little and added some height to my stem since my hands would go somewhat numb. This helped with less pressure on my hands and all but eliminated the numbness.

I would check with your LBS and see if they can do a follow up fitting/adjustment now that you have a few miles on the bike. It was surprising to find how much these seemingly subtle adjustments can improve the ride.

Well this morning went to my neighbor whois a bit of a bike but and he adjusted the seat a little higher surprisingly then forward. After completing a 10 mile trail I have to say it’s more comfortable overall. What I do notice is upper back soreness which to me seems to be me hyper extending to reach the bars. I honestly which the head stock was a little higher and back towards me. Don’t know if this again means the frame is to big or maybe I need a different style of bike. The Sirius has a pretty big drop compared to my last bike. I’ll admit, I was looking for a fitness oriented bike with that drop but maybe I’m not ready for it yet.

Again the funny part is the soreness I feel on my shoulder blades in the back. Looking online that seems to indicate over extension. The seat is as forward as it can go now.

weird