Thanks for the hint. I will definitely ask in case
Carbon or aluminium frame?
What is better? Which Ione is getting older first?
I found a carbon bicycle second hand, but I am worry to get bad surprises (eventually only due to the fact I do not know it…)
Carbon is better for a road bike for recreational use- lighter, stiffer, more comfortable.
Downside: more expensive and brittle if you have a really big impact. Inspect the frame carefully if buying 2nd hand
Aluminium might be better if you are looking for a bomb-proof workhorse for day to day commuting
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Thanks for the hint. What should I inspect? Which are normally the critical points? Any easy quality control method that could be easily carried out when purchasing a bicycle? Normally you have few minutes to take a decision and it would be good to know the hot spots you should inspect first and more carefully.
Do you have any checklist that may help?
Thanks in advance
I would say where the seat post and steerer are clamped. Google is your friend
Personally I would not worry excessively and a visual check is probably enough. In Switzerland I think it is more likely you have an overpaid 40+ guy selling a perfectly good bike they bought in a mid-life crisis and rarely used, vs. someone trying to shift damaged goods 
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I would recommend something like this: Cube Attain GTC SLX, Grösse 58 kaufen in Zürich - Velomarkt
It’s the best value you can get for CHF 2’500, which comes a with carbon frame, electronic gear shifting and disk breaks.
I’m looking for an E-Bike for my commute to work and to buy groceries. Commute is about 5km one way. On the way home I have about 80m elevation that I need to drive up.
I’m currently doing it on my normal bike, but in the high temperatures it gets really exhausting. During outside of summer it’s not a problem and I don’t mind sweating a little since I’m just going home anyway. But now that temperatures reach 30+ degrees again I almost fainted a couple of times on my way home.
Landi has the E-Bike Trelago Dinal III 28 for 999 CHF (Link). The bike has 65 Nm which as far as I understood from reading the other posts should be good enough for moderate inclines. The bike does overall look like excellent value, but then again, I don’t know too much about E-Bikes.
Does anyone have this bike or can maybe give some insights into the specifications?
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Does anyone have a tip for a good & affordable bike mechanic in Zurich city (no ebike)?
Usually I do most of the repairs myself, but its getting a bit out of hands now and I wanna bring it for a bike service before winter hits.
I know of Veloplus (129.-/general service, w/o potential repairs), but no other experiences.
Velocittà, used long time ago, was good
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I’ve had good experiences with Zweiradgeber GmbH – Ihr Velohändler in Zürich Kreis 3
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But that seems rather on the pricier side, no? (210 CHF for ‘kleiner service’ 
)
I don’t think I’ve been there for a ‘kleiner Service’.
I’ve used them to replace a spoke, fix a flat tire and for balancing a wheel.
They were fast and high quality.
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Was about to recommend Veloplus as well. You probably know this already but I do like their transparency regarding the costs for repair. Might be worth checking with them in person and asking them for an estimate prior to repair.
Veloplus - Service und Reparatur Kosten
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I feel that bike maintenance is one of those things that is quicker and less hassle to do yourself rather than get someone else to do it.
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We should meet. You can surely teach me one things or two. I always wanted to do all for my bike but I have limits 
The most mustachian bike you can get is a free bike.*
*for 2 months this summer (2025), including ebikes, if you have a mastercard
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Until a certain point it is all easy to do by yourself, like servicing the derailleur and cleaning/oiling/changing the chain. No special tools required (a chain opener could come in handy though - a few franks on amazon). That is basically all you need to do on a regular basis (maybe thightening quickly all the bolts with a standard allen key).
But when you start to change the cassette and have to grease the ball bearings special tools and an appropriate workspace is required…
(however, the typical city commuter needs that kind of maintenance only every 2-5 years - so still dirt cheap - about 200-250 CHF for the full service with no parts).
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regular chain maintenance will lengthen time you need before replacing the cassette.
when you get to 250 CHF + parts, you can get a brand new bike for less.
never said otherwise, but at some point the cassette is done (after the third chain approx./15’000 - 20’000 km).
a new cassette something between 50-300 CHF depending on the model + 250 CHF for the full service = 500 CHF. You won’t get a new bike for that. I do not have the torque wrench for taking out the chainring and the tool to remove the cassette (nor the workplace for doing this properly to service the ball bearing).
Here’s a new bike for < 460 CHF.
My own bike cost 800 CHF, so if I sell it for half that, I could buy a new one for less than the cost of a repair. Plus you avoid the accumulated other repairs/maintenance.