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Oski, I went for a long ride other day and the bike definitely shifts better. I also upgraded the chain on my son's road bike with a Shimano Ultegra chain which replaced a KMC chain and it shifts smoother and quieter. A good Park Chain Breaker tool (CT-3.3) goes a long way in saving money. It...

If you do really steep long climbs and use the small chainring upfront and are still working hard in the 28 or 32t cog you will want to stay with the Tiagra. If you find you can get by with the 28t cog then it may be worth it to upgrade. I never use the small chainring. I find that I can...

You are correct that the 105 allows me to find a more comfortable cadence due to not as big a tooth gap between cogs. Below compare the spacing (number of teeth of each cog) of the 105 11-28t vs the Tiagra 11-32t. It does not seem like much of a difference but it is...

I talked with my local bike shop about switching to a straight bar and they said they do it all the time with disc brakes. In fact they had just done one earlier in the day. All you need are new shifters and new hydraulic brake levers. I will probably have to do mine in a year or 2.

I will be saving additional weight with my new short reach handlebars, new lightweight seat, carbon seat post and the Schwalbe Aerothane tubes. The tubes will save about 80 grams each over my current tubes. I figure it will drop another 3/4 to 1 pound. The bike definitely feels more...

The new tires saved over 300 grams each, the cassette saves around 100 grams, the chain about 15 grams, the smaller tubes saves about 20 grams each and a new stem saves about 50 grams. So maybe 100 grams less than 2 pounds. 454 grams to a pound.

The chain does shift a little smoother. I like the new cassette. I can't say it made shifting better but I now have more usable gears. Before I was mainly using gears 8 ,9 and 10 except for hills. Now I am using 6,7,8, 9 and 10 due to the narrow spacing. It also lightens the bike by...

The Tiagra uses steel and the chainrings are bonded together for lack of a better term. The 105's are not and use aluminum. If the 105 comes loose you can damage the freehub. That's why it needs to be on tight.

It looks like they are using the the same cassette for both lines. Time will tell how the 105 cassette holds up to the torque. My mechanic said that the 105 is not as robust as the Tiagra but as long as it is locked down tight there should be no problems.

I haven't had a chance to try the bike since I got it back due to rain. I will report back tomorrow if the rain stops although, we really need it. Global warming has really screwed up the weather. Too hot and too little rain in Minnesota is a bad sign for the world. Here is the Tiagra...

I just got my bike back. The Cassette is a CS-HG500-10. My mechanic greased the headset bearing and the sound is better but not gone. The Cassette is a Tiagra Cassette. It weighs about 100 grams more than the 105 cassette. With the new tires and drop in weight overall the bike definitely...

I will find out today or tomorrow. The mechanic fixed my crank noise but could not fix the headset noise as the bearing is bad. Unfortunately, he did not change the chain or the cassette because he said there was nothing wrong with the old ones as they look brand new. He thought he was doing...

The Cassette that I bought is a 10 speed Shimano 105 from REI. I just dropped the bike off at a local mom and pop bike shop that is run by former professional rider name Bjorn who is a great guy. https://www.rei.com/product/807888/shimano-105-cs-5700-10-speed-cassette Although I just saw that...

Oski, I bought the same chain and will have it and the 105 cassette installed this week. For me, the 34t chainring is worthless. I find that a 39t or 44t would be better for me and my local riding. I find that with the 34t that I am pedaling too fast with assist and find it annoying and...

I put the other Pirelli Cinturato tire on my bike and it definitely feels faster and snappy. You feel it with the motor off. Pedal effort is less. Coasting goes further as well. It corners better and has a faster response. They have great grip. The ride is just a little firmer but I have...

Update on my Civante. It has developed a cracking noise coming from the headset when I go over small bumps and cracks in the road. It has also developed a creaking sound from the bottom bracket that is worse under hard pedaling. I contacted Yamaha and got a quick response instructing me to...

Dave, once I get in riding shape I will ride mostly in Eco mode. There are the same 4 modes on my bike. I actually meant that I would like a mode between Eco and STD. My mistake on confusing Eco Plus and Eco. I actually found Eco plus harder to pedal than on my regular road bike. Eco mode...

I went for a 15 mile ride today on the Gateway trail here in the suburbs of the Twin Cities. It is a beautiful trail that is for the most part in the shade due to the fact that it is heavily wooded. There are small lakes and ponds along the way as well as some cow farms and horse trails...

You are going to have to replace the whole hydraulic brake system for straight bars. I did a little research on this before I bought my Civante as I will eventually have to go that route as well as I get older in the next 2-3 years. They do make Tiagra straight bar shifters though. I would...

I just received my Civante on friday after a 3 month wait for a bike in the large frame. First off, I love the bike. It is a sharp looking bike but I am going to have to make some changes. I am 5'9" tall and the medium frame felt too small. My knees came up too high with the seat adjusted...