# Fork offset vs angle -- what is the difference in steering

When you read such post as this one https://bikeinsights.com/cyclopedia/trail you will learn how offset and head tube angle affects steering.

But I wonder about those parameters in "reverse" -- given trail (constant) when we change offset and angle what is the difference in steering?

For example: 760 mm wheels, one bike A with angle 78 degrees and offset 0 mm gives 80.8 trail, while another one B with angle 69 degrees and 61 offset gives 80.5 mm trail, so pretty close (let's call them even).

The difference of course is in the flop, for A it is 16.4mm, for B 26.9mm.

What would be the difference in actual steering? I am especially interested in such factor as self-correcting.

• What’s the context here? Technical trails with a suspension rock? Road racing? Jan 13, 2023 at 5:09
• And what is the definition of flop?
– ojs
Jan 13, 2023 at 11:11
• It's even more complex than that. Where the weight ends up can change a bike's self correction / flop / handling even more than a change in HTA, rake. (This is particularly noticeable in recumbent bikes, where moving a rider forward or backward an inch can change handling characteristics.) The good news is that riders can get used to just about anything in the realm of "normal" very quickly.
– user36575
Jan 13, 2023 at 13:05
• @PaulH, Rigid fork, since suspension would add additional factor of sagging. Context is riding straight, I am not asking about particular race/event/trip but the nature of the bike. I selected those parameters to have constant trail so the variables would be only offset and angle (and as a derivative -- flop). Jan 13, 2023 at 14:36
• I'll say this, as mountain bikes have gotten longer and slacker, they are increasingly spec'd with low offset forks. Those forks seems to provide a very acceptable balance of high-speed stability and low-speed maneuverability. IME, a modern bike with a 160 mm fork and a 64º HTA navigates tight switchbacks better than the 120 mm, 70º HTA bikes of ten years ago. Jan 13, 2023 at 15:28