Recent content by Alex65

Thank you

The rollers on the factory trainer are about twice as big. I wanted to use these rollers for testing, but I still didn't think it would be so hard to turn them

Thank you for the detailed explanation. Yes, I will have a slave roller under the front wheel, driven by a rear roller

Thank you for the information. I thought this might be the reason, but I didn’t realize it could make the rollers so hard to turn In general, I want to make a trainer with larger rollers — it seems to me that for wheels of this size, rollers with a diameter of 12 cm would be more suitable. But...

Are 6202 and 6203 bearings ideal for a roller bike trainer?

You may be right, although on the other hand, despite the treadmill being old, it hasn’t been used much. I disassembled two bearings, but I didn’t find any obvious signs of wear

Yes, that’s correct. After being spun by hand and released, they only make about three revolutions before stopping

The bearings are lubricated and not worn. Thank you

The roller weights are 1.75 kg and 2.2 kg. They are not difficult to spin, but even with my maximum effort they make at most three revolutions. The frame is currently disassembled

I tried riding with different tire pressures and in different gears, but the effect was almost the same. The rollers are not connected to each other and spin independently

The roller diameters are 40 mm and 46 mm. The distance between them is 19 cm. The outer diameter of the rear wheel is 28 inches. The tire pressure is 45 PSI

I want to make a roller bike trainer. Right now, I only have two rollers from a treadmill for the rear wheel of the bike. My question is: why is it so hard to turn the pedals compared to the rollers on a factory-made bike trainer? The shafts have 6202 RS and 6203 RS bearings, with cylinders...