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

New: Take Part in the June Giveaway to Win the Kazam Buddi 20" Aluminum Trailer Bike


Mongoose xr-250 front derailleur
#1
I am having some problem with my front shift it is a falcon mf-50 and st-EF-50 rapid fire shifter. My problem is when I shift from low to mid shift it will go to high gear. The stops are set correcting and there is no barrel adjuster on the rapid fire shifter for fine tuning.I know my height may be to high . I have tied to lower the front derailleur but the inside of the derailleur hits the mid gear. what is the adjustment for this
  Reply
#2
are the rapidfire stock shifter?
There are two kinds of people in the world, "Those who help themselves to people, and those who help people!"
  Reply
#3
stock with no barrel adjusters also the front derailleur does not have a barrel adjuster ,it is a Falcon MF -50
  Reply
#4
Can you upload some pictures?
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply
#5
If you are overshifting to a taller gear in the front, that indicates cable is too tight or you are using too much throw at the lever.
With the chain on the small ring and shifter set to '1', the cable should have just a tiny bit of slack in it. If it is tight, loosen pinch bolt and re-set.
You do not have to throw the lever through its full travel. Some shifters are made to allow for a 2x shift and it sometimes confuses folks.
Wheelies don't pop themselves. (from a QBP fortune cookie)
  Reply
#6
(07-03-2011, 08:43 AM)RobAR Wrote:  If you are overshifting to a taller gear in the front, that indicates cable is too tight or you are using too much throw at the lever.
With the chain on the small ring and shifter set to '1', the cable should have just a tiny bit of slack in it. If it is tight, loosen pinch bolt and re-set.
You do not have to throw the lever through its full travel. Some shifters are made to allow for a 2x shift and it sometimes confuses folks.
I think I have found the problem ?????? I found a brake down of the st-ef50 shifter and it has a barrel adjuster this I will need to find for the fine adjustment. when down shifting from the big gear it bypasses the 2nd gear and goes right to high gear .I can up shift fine high gear to 2nd is great and up to low is fine. Purchased this bike used and got it cheap. I have changed tires out to 1.75 street tires raised the bars to 5: risers. Sould be a great bike for my riding. thanks for the help!!!!!
  Reply
#7
(07-03-2011, 03:39 PM)winter rider Wrote:  
(07-03-2011, 08:43 AM)RobAR Wrote:  If you are overshifting to a taller gear in the front, that indicates cable is too tight or you are using too much throw at the lever.
With the chain on the small ring and shifter set to '1', the cable should have just a tiny bit of slack in it. If it is tight, loosen pinch bolt and re-set.
You do not have to throw the lever through its full travel. Some shifters are made to allow for a 2x shift and it sometimes confuses folks.
I think I have found the problem ?????? I found a brake down of the st-ef50 shifter and it has a barrel adjuster this I will need to find for the fine adjustment. when down shifting from the big gear it bypasses the 2nd gear and goes right to high gear .I can up shift fine high gear to 2nd is great and up to low is fine. Purchased this bike used and got it cheap. I have changed tires out to 1.75 street tires raised the bars to 5: risers. Sould be a great bike for my riding. thanks for the help!!!!!
installed barrel adjuster today seems to shift much better I may still need to fine tune it. thanks for all the help
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
What did your first bicycle mean to you?
Today 05:50 AM
Fat bikes for ever..
Today 02:28 AM
Anybody watch on YouTube Global Mountain...
Today 01:52 AM
Trike riders are good citizens
Today 01:50 AM
Intro
Yesterday 10:58 PM
Moving from 26" to 29" - Did you have an...
Yesterday 08:28 PM
Tour de France 2024
Yesterday 05:40 PM
Off-season hill climbing training tip
Yesterday 12:20 PM
Modern Tire Width Preference
07-10-2024 03:22 PM
Community Discussion Cycling Myths
07-09-2024 06:12 AM

[-]
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
33 posts
no avatar 2. Flowrider
21 posts
no avatar 3. GirishH
18 posts
no avatar 4. meamoantonio
14 posts
no avatar 5. Dusan
11 posts