Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Mountain Biking Mountain biking is one of the fastest growing sports in the world. Check out this forum to discuss the latest tips, tricks, gear and equipment in the world of mountain biking.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 04-03-07, 12:39 AM   #1
CycleAloha
Senior Member
Thread Starter
 
CycleAloha's Avatar
 
Join Date: Oct 2005
Location: Beaufort, SC
Bikes:
Posts: 247
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Crank Question

As mentioned in earlier posts...today while installing my new pedals I managed to stripe my crank arm...ie the pedal won't stay on. My question is can (or should I) buy a new crank arm or look for a whole new crank set. The one's on are TruVativ ISOFlow 3.0 175mm (22/32/42). Does the replacement have to be exact specs or just make sure it's compatible w/BB (Power Spline)? Appreciate any help....and yes I know I'm a moron!!!!
CycleAloha is offline   Reply With Quote
Old 04-03-07, 04:45 AM   #2
metabike
Senior Member
 
metabike's Avatar
 
Join Date: Mar 2007
Bikes:
Posts: 395
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Before you give up on what you have, track down an auto shop in your area who can try installing a helicoil thread insert for you. Don't mean to insult you but just in case you are wondering, "Heli-Coil® inserts are precision formed screw thread coils of stainless steel wire having a diamond shaped cross section.When they are installed into Heli-Coil® tapped holes, they provide permanent conventional 60' internal screw threads that accommodate any standard bolt or screw."

Good luck and welcome to the International Federated Brotherhood & Sisterhood of Amalgamated Mistake Makers! (I've attained journeyman status so don't feel bad.)
metabike is offline   Reply With Quote
Old 04-03-07, 07:58 AM   #3
pinkrobe
DNPAIMFB
 
pinkrobe's Avatar
 
Join Date: Aug 2005
Location: Cowtown, AB
Bikes: Titus El Guapo, Misfit diSSent, Cervelo Soloist Carbon, Wabi Lightning, et al.
Posts: 4,654
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Oh, and a word of advice - start threading your pedals by hand. Once you've got a few threads engaged, feel free to break out the tools. Don't force it - most pedals can usually be screwed pretty much all the way in without needing tools.
__________________
Proud Member of the HHCMF
'06 Cervelo Soloist Carbon | '09 Titus El Guapo | '09 Misfit diSSent | '09 Wabi Lightning
pinkrobe is offline   Reply With Quote
Old 04-03-07, 08:38 AM   #4
dminor 
Moar cowbell
 
dminor's Avatar
 
Join Date: Oct 2004
Location: The 509
Bikes: are awesome.
Posts: 12,429
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
In my experience, Heli-Coiled pedal threads do not last. There is often not enough material removed from the pedal hole to get a clean bore to tap for the coil. There are more heavy-duty thread inserts made by Eldi; but good luck finding a shop that actually stocks them AND has the Eldi tools to do the job. Plus, your TruVativ crank is probably not worth the expense of going that route.

Try the more economical Heli-Coil if you want but be prepared to have to replace it eventually anyway.
__________________

Quote:
Originally Posted by Mark Twain
"Don't argue with stupid people; they will drag you down to their level and then beat you with experience."
dminor is offline   Reply With Quote
Old 04-03-07, 09:13 AM   #5
CycleAloha
Senior Member
Thread Starter
 
CycleAloha's Avatar
 
Join Date: Oct 2005
Location: Beaufort, SC
Bikes:
Posts: 247
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
All, I'll make some calls but limited resources here in Hawaii.....thanks for the info and advice on doing it by hand.

Thanks again.
CycleAloha is offline   Reply With Quote
Old 04-03-07, 09:31 AM   #6
CycleAloha
Senior Member
Thread Starter
 
CycleAloha's Avatar
 
Join Date: Oct 2005
Location: Beaufort, SC
Bikes:
Posts: 247
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've been shopping around and have a few possible replacements, guess my question now is do the new cranks have to be 175mm and have 22/32/42, exactly what I have now? I can't find my current crankset online or I'd just buy it.

....and yes I'm a full card carrying member of the Brotherhood now.
CycleAloha is offline   Reply With Quote
Old 04-03-07, 09:37 AM   #7
santiago
sarcasm meter: jerk mode
 
santiago's Avatar
 
Join Date: Mar 2005
Location: Montréal, QC, Canada
Bikes: 2005 Kona Blast; 2005 Turner Flux, 2006 Felt F3C
Posts: 4,510
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by CycleAloha
I've been shopping around and have a few possible replacements, guess my question now is do the new cranks have to be 175mm and have 22/32/42, exactly what I have now? I can't find my current crankset online or I'd just buy it.

....and yes I'm a full card carrying member of the Brotherhood now.
Sometimes you can just buy the crank arm. At that point the only thing you have to try to match up is the 175mm length. Not sure if this applies for the crank arms you have.
__________________
First Class Jerk
santiago is offline   Reply With Quote
Old 04-03-07, 10:58 AM   #8
ZeCanon
Writin' stuff
 
ZeCanon's Avatar
 
Join Date: Feb 2007
Location: Boulder, CO
Bikes:
Posts: 3,784
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
if you are replacing the whole crankset, you don't need to buy the exact same thing. Just make sure it goes with your BB, and you'll be fine. If you are only replacing one arm, it needs to be the same length. BCD (bolt hole diameter) and tooth count do not need to be the same, though 90% of all mtb cranks are damn close to 22/32/42. Some may have 24's, or 44's, but that doesn't really matter (though if you like your current gear ratios, try to find one that is the same).
Powerspline BB? You mean ISIS?
ZeCanon is offline   Reply With Quote
Old 04-03-07, 02:40 PM   #9
CycleAloha
Senior Member
Thread Starter
 
CycleAloha's Avatar
 
Join Date: Oct 2005
Location: Beaufort, SC
Bikes:
Posts: 247
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by ZeCanon
if you are replacing the whole crankset, you don't need to buy the exact same thing. Just make sure it goes with your BB, and you'll be fine. If you are only replacing one arm, it needs to be the same length. BCD (bolt hole diameter) and tooth count do not need to be the same, though 90% of all mtb cranks are damn close to 22/32/42. Some may have 24's, or 44's, but that doesn't really matter (though if you like your current gear ratios, try to find one that is the same).
Powerspline BB? You mean ISIS?

Sounds good, think I'm tracking all.

Yes, I believe it is ISIS.

I've got my eye on a crank arm but waiting on seller to get back w/me but it should be 175mm.
CycleAloha is offline   Reply With Quote
Old 04-03-07, 07:03 PM   #10
alumrock12
the sun never sets on me
 
alumrock12's Avatar
 
Join Date: Oct 2006
Location: the bAy
Bikes: 853 Hardtail
Posts: 581
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
dang. you stripped the pedal threads on your crank? i wouldn't want to get into a fight with you... hehe.
alumrock12 is offline   Reply With Quote
Old 04-03-07, 08:43 PM   #11
CycleAloha
Senior Member
Thread Starter
 
CycleAloha's Avatar
 
Join Date: Oct 2005
Location: Beaufort, SC
Bikes:
Posts: 247
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by alumrock12
dang. you stripped the pedal threads on your crank? i wouldn't want to get into a fight with you... hehe.

That's one thing I couldn't figure out....thought I'd jack up the pedals first, which would have been much more cool b/c they were cheap platforms.
CycleAloha is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 11:04 AM.