I'm running a 100mm travel fork and have a seat tube angle of 73 degrees and a headtube angle of 70.5 degrees.
If I were to switch to a 120mm fork approx. what would my new angles be?
Bike Forum
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Frame geometry question - switching to 120mm from 100mm
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Posted 1 year ago #
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around 1/2 a degree slacker once you've factored sag in. I really wouldn't worry about the specific angles anyway - particularly as it's not uncommon for quoted geometry to not actually be what the frames really are...
Posted 1 year ago # -
I thought it would be more than that. Cheers
Posted 1 year ago # -
I'm about to do the same, so I emailed the bike company.
I had a great reply, they basically said "do it". In fact the lad who replied said he loved the feel of my model with longer forks on the front.
The big Q now is which 120 fork
Posted 1 year ago # -
I'm getting the Magura Durin Marathon - can be switched between 100mm and 120mm.
Posted 1 year ago # -
With that small a difference, and already quite steep angles, you should be absolutely fine. Just make sure that the frame manufacturer warranties the frame with a 120mm fork.
If you made a big change you might need to put your saddle forward a few mm to keep the same effective saddle offset, but probably won't make any difference.
Posted 1 year ago #
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