Technical & Reference Section > Tech and Restoration

Crown race installation

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TwoBobRob:
Yep.  That, or a big ole ring spanner that you then whack with a hammer.

I've always just used hammer & punch myself though. I had (until it was stolen) a very large Snap On punch - around a foot long and quite substantial - which would get even the most stubborn races on with just a couple of taps.

Devilock:

--- Quote from: midschooljon on August 26, 2012, 09:42 PM ---
--- Quote from: Devilock on August 26, 2012, 08:58 PM ---
--- Quote from: midschooljon on August 26, 2012, 08:47 PM ---I use an adjustable wrench. Drop the race on and then adjust the wrench so that it is the same width as your for steer tube. Then wack the race down using the wrench. The wrench obviously hits the race on both sides as opposed to one side at a time with a screwdriver. Works a treat.  :daumenhoch:

--- End quote ---

How do you apply enough force using this method? Do you use a hammer to hit the wrench?



--- End quote ---

It takes a lot less force then you think. Say for example the race is resting on the crown. I just slide the wrench up the steerer about 4 inches then wack it down on the race. On old bikes it normally goes on with a single hit. More stubborn ones take about 4 or 5 blows. Saying that my adjustable wrench is quite a large one, probably abut 12" long and fairly heavy.

--- End quote ---


Nice one cheers Jon, Ill certainly employ this method!  :daumenhoch:




--- Quote from: TwoBobRob on August 26, 2012, 09:48 PM ---Yep.  That, or a big ole ring spanner that you then whack with a hammer.

I've always just used hammer & punch myself though. I had (until it was stolen) a very large Snap On punch - around a foot long and quite substantial - which would get even the most stubborn races on with just a couple of taps.


--- End quote ---


Pardon my ignorance but whats a punch...?  :-[

midschooljon:
A punch is like a big blunt chisel.  :daumenhoch:

Devilock:

--- Quote from: midschooljon on August 26, 2012, 10:08 PM ---A punch is like a big blunt chisel.  :daumenhoch:

--- End quote ---

 :daumenhoch:

HARORIDER:
i would use another old crown race on top of the new one them tap it down-i fooked one up before using a flat screwdriver so wouldn't recommend that  :-[

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