Partially stripped crank thread

Bought the beater home after lending it to a friend. Took his platforms
off. Didn't find my clipless until I was about to put the bike into the car
so just hand-threaded the pedals in a few turns so I wouldn't loose them on
the way home. Got back at home and one of the kids jumped on it before I'd
tightened the pedals. They hit the gas and the pedal snapped out of the
crank arm, ricocheting across the pavement, taking about 2 or 3 turns of the
crankarm thread with it. The torn thread was like a thin alloy spring
coiled around the threads of the pedal.

I think there is enough thread remaining so that the pedal would screw in to
the crank arm securely . I was wondering if any one had an good ideas
before I start forcing bolts into partially stripped holes? I'd rather not
have to buy a new crankset. It's a Raceface Prodigy XC crankset.
--
Westie
(Replace 'invalid' with 'yahoo' when replying.)

"Westie" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Bought the beater home after lending it to a friend. Took his platforms
off. Didn't find my clipless until I was about to put the bike into the

car

Quoted message said:

so just hand-threaded the pedals in a few turns so I wouldn't loose them

on

Quoted message said:

the way home. Got back at home and one of the kids jumped on it before

I'd

Quoted message said:

tightened the pedals. They hit the gas and the pedal snapped out of the
crank arm, ricocheting across the pavement, taking about 2 or 3 turns of

the

Quoted message said:

crankarm thread with it. The torn thread was like a thin alloy spring
coiled around the threads of the pedal.

I think there is enough thread remaining so that the pedal would screw in

to

Quoted message said:

the crank arm securely . I was wondering if any one had an good ideas
before I start forcing bolts into partially stripped holes? I'd rather

not

Quoted message said:

have to buy a new crankset. It's a Raceface Prodigy XC crankset.
--
Westie
(Replace 'invalid' with 'yahoo' when replying.)

It sounds like you have enough good thread to function. The pedals I've
looked at have 7 threads over their length, leaving you 4 good threads? I'd
try to screw the pedal in from the back side to see if you can clean out any
damaged thread, although it probably won't reach thru. If you can start it
from the front side without cross threading it you should be fine. If an
LBS is handy they may have a tap to clean up the thread. This all assumes
that your not some freeriding monster that breaks frames every other week
;-) If you've broken cranks in the past it's probably not a good idea to
trust it. YMMV.

--
DTW .../\.../\.../\...

I've spent most of my money on mountain biking and windsurfing.
The rest I've just wasted.

"Portable Splat Graphics" <splatgraphics@(NOSPAM)sympatico.ca> wrote in message news:<[email hidden]>...

Quoted message said:

If you are careful and you know what your doing use a Tap and die set.
* http://www2.northerntool.com/product/34565/ *
Yea I said it, "tap and die"! 🙂 long live funk 🙂

CS

I doubt that kit has a 9/16 x 20 L or a 9/16 x 20 R. They are pretty
much [censored] threads of the bicycle industry.

R

"Westie" <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

Bought the beater home after lending it to a friend. Took his platforms
off. Didn't find my clipless until I was about to put the bike into the car
so just hand-threaded the pedals in a few turns so I wouldn't loose them on
the way home. Got back at home and one of the kids jumped on it before I'd
tightened the pedals. They hit the gas and the pedal snapped out of the
crank arm, ricocheting across the pavement, taking about 2 or 3 turns of the
crankarm thread with it. The torn thread was like a thin alloy spring
coiled around the threads of the pedal.

Try running the pedal in from the back side of the crankarm, in order
to clean out the threads. If there is a enough material left, you'll
know it when you really lay into the pedal with a long pedal wrench.

Quoted message said:

I think there is enough thread remaining so that the pedal would screw in to
the crank arm securely . I was wondering if any one had an good ideas
before I start forcing bolts into partially stripped holes? I'd rather not
have to buy a new crankset. It's a Raceface Prodigy XC crankset.

Eldi makes a threadsert (solid threaded insert) specifically for
replacing the 9/16 x 20 threads in a stripped arm. You can check
places like biketoolsetc.com or check with your local LBS ... if there
any good they'll have the kit. It's a ~20.00 job at the LBS here.

R

OK, thanks guys. I'll give that threading from the back a go.
--
Westie
(Replace 'invalid' with 'yahoo' when replying.)