Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the July Giveaway for VTUVIA SN100 Camouflage Fat Tire E-Bike $1679


Does anyone know how to adjust springer forks?
#1
Hi from Kentucky.

I bought a cruiser bike and notices that the springer fork spring has slack when weight is applied to the bike.

Should the spring be tightened to remove slack from the spring when the rider is sitting on the bike or is this normal for the springer to function.

It's old technology but does smooth the bumps decently. I just want to adjust the forks for optimum performance.

Thanks.....................Tom
2011softcruise


“Striker, listen, and you listen close: flying a plane is no different than riding a bicycle, just a lot harder to put baseball cards in the spokes.”
Airplane (1980) – Rex Kramer (Robert Stack)

  Reply
#2
not 100% sure how to adjust those forks, not familiar with the brand.

However it is perfectly normal for them to compress when you get on. This is called "sag." The idea is that as you go over rough ground, the fork can not only compress over bumps, but extend in dips, keeping the wheel firmly in contact with the ground.

How much sag (percentage of full fork travel) depends on the application (below are guidelines):
canal paths, probs 10-20%,
Cross-country mountain biking, 20-25%
Downhill mountain biking, about 33%, though some set it up as high as 40%
Hucking (big drops, sometimes to flat), about 25% (though the damping curve is more important than sag for this).

The more sag, the more compliant the fork will be (but less efficient to pedal), hence why despite a downhill setup (8" travel, 33% sag) being the best for eating rock gardens and smashing your way over bumps at high speed, your average off-road bike doesn't use it; pedaling a downhill bike up hill is incredibly hard. This applies to front and rear suspension.
  Reply
#3
Thanks for the info.

I've looked everywhere for that knowledge but the net only had installation advice. The springer forks are not as efficient as modern MTB forks but I'm satisfied with it's trail performance as-is.

I'll not tighten the adjustment nut. Doing so will restrict its designed function.
2011softcruise


“Striker, listen, and you listen close: flying a plane is no different than riding a bicycle, just a lot harder to put baseball cards in the spokes.”
Airplane (1980) – Rex Kramer (Robert Stack)

  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
16,118
09-29-2015, 10:35 PM
Last Post: Painkiller
 
14,074
06-03-2014, 07:44 PM
Last Post: Matt9
 
20,954
02-15-2014, 06:22 PM
Last Post: nfmisso
 
11,438
09-10-2013, 02:21 PM
Last Post: nfmisso

Forum Jump:

[-]
10 Latest Posts
Cannondale Criterium value
Today 10:47 AM
Ebike for riders 5ft tall
Today 08:54 AM
First Metric Century
Yesterday 03:26 PM
Help identifying date of manufacturing
08-15-2022 08:52 PM
Cycling photos while on holiday
08-15-2022 08:41 PM
Make a freewheel removal tool
08-14-2022 07:32 AM
Weak spring tension on the derailleur wi...
08-14-2022 07:18 AM
Woodsplitter in Pittsfield, Vermont
08-12-2022 06:19 AM
New Stator For My Ride1up Core 5
08-10-2022 08:49 PM
Jumps a Gear
08-09-2022 07:14 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Jesper
18 posts
no avatar 2. ichitan
15 posts
no avatar 3. dinh thaihoang
11 posts
no avatar 4. ReapThaWhirlwind
11 posts
no avatar 5. Criminal
7 posts