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Altering geometry by replacing the fork

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Altering geometry by replacing the fork

Old 11-17-17, 09:38 AM
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c_bake
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Altering geometry by replacing the fork

I want to replace the rigid Fork on my Monocog with. Vassago Odis.
The stock Fork on my bike has a 39 degree rake or offset and the Odis has a 43 degree offset.
My question is how will this change affect the handling of the bike? To me I feel the stock Fork is a bit steep and the Odis Fork will relax the geometry a bit and make it a bit more stable in tight turns and possibly smooth out the ride just a bit.
Is my thinking correct?
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Old 11-17-17, 11:05 AM
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only you will know for sure but my thought is it will be more relaxed.

I have not had the opportunity to compare on the same bike and my only comparison with rigid is on road bikes

My carbon bike Wilier Mortorolio has a straighter fork and my steel bike Paramount has more rake

There is no question that my paramount is more stable descending. To be fair it is a bit bigger buit I had the same feeling with the rake of my Nishiki Tri A which was almost the same size as the Wilier but again had a fork with more rake It felt more solid at speed. The Wilier handles just fine but over 25 mph feels more twitchy and I notice it more at speed. It also feels more nimble when turning in general. The Paramount and Tri A make the same turns but feel more like swooping or a glide to them if you will.

An MTB will be different I would think but some of the same qualities

I guess the real question would be if better to be twitchy on the trail. With an MTB that seems like a shorter stem rules that feel along with wider bars as well

My guess is with a high end rigid fork like the one you are buying it would be an improvement overall and has been tested by many to be ideal
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Old 11-19-17, 09:03 PM
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Originally Posted by c_bake View Post
I want to replace the rigid Fork on my Monocog with. Vassago Odis.
The stock Fork on my bike has a 39 degree rake or offset and the Odis has a 43 degree offset.
My question is how will this change affect the handling of the bike? To me I feel the stock Fork is a bit steep and the Odis Fork will relax the geometry a bit and make it a bit more stable in tight turns and possibly smooth out the ride just a bit.
Is my thinking correct?
What is the difference in the axle to crown measurement of the two forks?
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Old 11-20-17, 01:28 AM
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I assume that is 39mm offset vs 43mm. Not enough to notice by itself.
However, I would expect a suspension fork may be a little longer, which would make it a little slower steering and more stable, as would the suspension effect itself.
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Old 11-20-17, 09:13 PM
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I have two hard forked bikes and one suspension.
I though I'd swap our one of the hard forks for a suspension fork and it made the steering so slow that I went back to the hard fork about a week later. That may not suit everyone but in New England the single tracks can tend to favor fast steering more than bump absorption and stiff forks with a little bigger tire can be better suited. But I guess others have figured that out now with all the Fat Bikes I am seeing now.
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