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

New: Take part in the January Giveaway for the DYU R1 20" City Electric Bike


Stuck Crank bolt
#1
Ok guys, I have a stuck Crank Bolt. I mean super stuck. Some crazy gorrilla sized human must have tightened this bolt down. I have been soaking it with GT85 for 24 hours. It still will not budge.
  Reply
#2
Jordan,
Hey there. Im not to sure of this myself but is it possible it may be left hand threaded? So many bikes out there these days.
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply
#3
Nope not left hand threaded. I dropped it off at my LBS, its in their hands now
  Reply
#4
Lol sounds like the bolt was being stubborn.
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply
#5
Hopefully the shop got it off. I am going to pick it up soon.
  Reply
#6
OK, they could not get it either, they said they soaked it in a solution that "always works" but they could not get it off. So I am stuck with a frame and a crankarm stuck on it. I guess it's time to get some big power tools.
  Reply
#7
You might be able to drill it out though you risk damaging the spindle. But even if you just get a hole down the center, that will sometimes weaken it enough to break the bond. Worst case of course, is to cut the spindle right behind the crank arm. Gives you the frame back at least, but you might then lose the crank as well if you can't get the remnants out.

I've never seen stuck crank bolts freed by chemical means, usually either leverage or impact. Has anyone tried a breaker bar extension on the wrench or a little hammering on the wrench to break the bond? Just be careful where the forces go so you don't wreck the frame.

Grease your bolts...
  Reply
#8
yeah I tried a breaker bar. I am taking it to my parents shop tommorow, I'll probably put it in the drill press.
  Reply
#9
Wish there was something more I could suggest too. There was a post about using a dremel for the bottom bracket. Don't think that would apply here if I remember correctly the gentleman's complete BB was rusted solid. Nice ideas Dave.
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply
#10
I GOT IT! I put it under a drill press and started drilling into the bolt. I didn't really know what i was doing at that point, I just knew i wanted it off the frame. Well I drilled into it for about a minute and then I stopped to wipe away the shavings and the bolt just started turning out really easily, I guess the heat from the drilling did something and freed it up.
  Reply
#11
congratulations jordan good work
  Reply
#12
That was an adventure. I can finally use this frame for something good now. I'll start a new thread of my new project once I get it going.
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
19,853
07-19-2021, 12:00 AM
Last Post: rbx
 
7,502
04-17-2014, 09:16 AM
Last Post: nfmisso
 
7,479
02-09-2014, 04:52 PM
Last Post: cny-man
 
7,599
06-01-2013, 06:58 PM
Last Post: Painkiller
 
11,500
10-07-2012, 11:06 PM
Last Post: GeorgeET
 
7,580
10-26-2011, 11:43 AM
Last Post: chibler

Forum Jump:

[-]
10 Latest Posts
Velowave Ranger Fat Tire e-bike
Today 03:07 AM
1930s Automoto
Today 02:09 AM
How much do you bike per year?
Yesterday 02:22 PM
Commute/Beginner Triathlon bikes
Yesterday 12:20 AM
Worlds greatest climb road!
01-25-2022 08:10 PM
Urich old tire repair tool
01-25-2022 08:03 PM
Vintage bridgestone
01-24-2022 10:37 PM
First Century
01-23-2022 11:04 PM
Tips on attempting to cold set a damaged...
01-23-2022 06:36 PM
Twin Schwin two speed tandem
01-22-2022 02:44 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
33 posts
no avatar 2. ReapThaWhirlwind
18 posts
no avatar 3. jeffg
14 posts
no avatar 4. Jake1
7 posts
no avatar 5. JR Namida
5 posts