Is there a simple way to figure out what travel length fork is needed when replacing rigid fork with suspension fork

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Is there a simple way to figure out what travel length fork is needed when replacing rigid fork with suspension fork
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flag famous-nobody
Posted: Oct 28, 2016 at 13:35 Quote
taking into account pre-load and sag and the rigid fork's length
and that ongoing reference to axle / crown value
which never tells me what i need to know
when actually making a final decision of what fork travel length do a i "pull the trigger on" & order ???

the suspension travel length #mm info i need
in order to keep stock fork rake geometry the same (or close to same as possible) as the stock rigid fork spec.

when i measure axle to crown of rigid fork
................ it measures just barely under 19.5 inches
flag titaniumtit
Posted: Oct 29, 2016 at 6:29 Quote
famous-nobody wrote:
taking into account pre-load and sag and the rigid fork's length
and that ongoing reference to axle / crown value
which never tells me what i need to know
when actually making a final decision of what fork travel length do a i "pull the trigger on" & order ???

the suspension travel length #mm info i need
in order to keep stock fork rake geometry the same (or close to same as possible) as the stock rigid fork spec.

when i measure axle to crown of rigid fork
................ it measures just barely under 19.5 inches

Sounds like you're wanting a 490mm rigid fork which if on a 29er is equivalent to a 120mm fork.

Smile
flag cmcrawfo
Posted: Oct 29, 2016 at 8:18 Quote
famous-nobody wrote:
taking into account pre-load and sag and the rigid fork's length
and that ongoing reference to axle / crown value
which never tells me what i need to know
when actually making a final decision of what fork travel length do a i "pull the trigger on" & order ???

the suspension travel length #mm info i need
in order to keep stock fork rake geometry the same (or close to same as possible) as the stock rigid fork spec.

when i measure axle to crown of rigid fork
................ it measures just barely under 19.5 inches

Axle to crown is pretty straight forward .. you are on the right track, justy measure in mm (like you did ) then find a fork in that range. bam!

At 495 mm, I would say that a 120-130mm fork would be spot on... but if you really want more travel, you may be able to find a 140mm fork with a low enough axle to crown
flag titaniumtit
Posted: Oct 29, 2016 at 8:37 Quote
cmcrawfo wrote:
famous-nobody wrote:
taking into account pre-load and sag and the rigid fork's length
and that ongoing reference to axle / crown value
which never tells me what i need to know
when actually making a final decision of what fork travel length do a i "pull the trigger on" & order ???

the suspension travel length #mm info i need
in order to keep stock fork rake geometry the same (or close to same as possible) as the stock rigid fork spec.

when i measure axle to crown of rigid fork
................ it measures just barely under 19.5 inches

Axle to crown is pretty straight forward .. you are on the right track, justy measure in mm (like you did ) then find a fork in that range. bam!

At 495 mm, I would say that a 120-130mm fork would be spot on... but if you really want more travel, you may be able to find a 140mm fork with a low enough axle to crown

At least someone understood lol
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