Cross threaded: FSA Energy BB386 cold forged crank
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Cross threaded: FSA Energy BB386 cold forged crank
Postby rp » Sun Oct 15, 2017 8:45 pm
In all my excitement to get onto my new bike, I have cross-threaded the left pedal and it's stuffed.
I need to buy a replacement left crank arm (and new left pedal)
Does anyone know if the FSA Gossamer left crank arm will be compatible with the right crank arm? It seems like it should be (Gossamer seems like it's inferior to the Energy but I just want to be able to ride my bike without forking out a fortune).
The Gossamer left crank arm 172.5mm (my size) is available on ebay for $38.
Thanks for the advice!
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby dunamis » Sun Oct 15, 2017 9:56 pm
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby eeksll » Sun Oct 15, 2017 10:11 pm
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby ValleyForge » Sun Oct 15, 2017 10:17 pm
And you only get one go at it to get it right.dunamis wrote:You can get the thread tapped out and a bush screwed in and salvage the crank but you'd probably need a LBS to do it because the kit to DIY is expensive.
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby Duck! » Sun Oct 15, 2017 10:56 pm
You're misreading it. The question is if the left Gossamer crank is a compatible spline pattern to match the Energy right crank and integrated spindle. The answer is "probably" but I'm not intimately familiar enough with FSA's intricacies to be certain.eeksll wrote:if you haven't mistyped that, ie you want use a left crank arm on the right side, wouldn't that have the wrong pedal thread?
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby Duck! » Sun Oct 15, 2017 10:59 pm
If the thread is not too munted it may be possible to retap it to the standard size; I have salvaged threads before. Otherwise oversize tap and helicoil rethread is the go.ValleyForge wrote:And you only get one go at it to get it right.dunamis wrote:You can get the thread tapped out and a bush screwed in and salvage the crank but you'd probably need a LBS to do it because the kit to DIY is expensive.
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby rp » Wed Oct 18, 2017 12:53 am
Does anyone know a bike store in Perth that would do this?
Thanks!
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby RichB » Wed Oct 18, 2017 2:39 am
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby uart » Wed Oct 18, 2017 11:32 am
This is a good question. Sometimes you can clean up a thread by just screwing the pedal on and off a few times from the wrong side of the hole.RichB wrote:How bad did you stuff the threads? cross threaded only the first few?
Cross threading Al parts is a pita though. If you've done it before you become pretty careful to always try and get a few turns finger tight on whatever the part before breaking out the spanner or other tools.
I often remove my pedals to transport my bikes (laying flat in the back of a hatchback) and I've got one combination of crank and pedal that's a little tight on the thread. I often can't quite start it finger tight, and it's always a nervous moment when I have to take a spanner to it to get it started. I really hate doing that.
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby rp » Thu Oct 19, 2017 10:30 pm
The Gossamer is on its way but the FSA rep I emailed doesn't think it will fit
"The Energy crankset you have is of the MegaExo standard and has a 24mm spindle.
The Gossamer crankarm in the photo fits the BB386 standard with a 30mm spindle"
GRRRR
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby Duck! » Thu Oct 19, 2017 11:07 pm
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby rp » Thu Oct 19, 2017 11:53 pm
Next idea - can I just weld the pedal to the crank? My dad has an arc welder....
Not liking the idea of getting a new fsa crankset for 289 euro
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby Duck! » Fri Oct 20, 2017 12:25 am
You should be able to get the correct left crank arm.
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby uart » Fri Oct 20, 2017 3:37 pm
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby ValleyForge » Fri Oct 20, 2017 6:38 pm
"That's why we can't have nice things in this house"rp wrote:Nah it's stuffed. Managed to tighten it on trying to get it off (rookie error).
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby rp » Fri Oct 20, 2017 11:36 pm
Yeah will do so, aesthetics don't matter much. I was thinking the attachment bit might have been some sort of steel whilst the rest of the crank is hollow aluminium. I'll just have to try source a left crank arm.
Thanks guys.
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby baabaa » Sat Oct 21, 2017 10:54 am
While we are at it if use a compact crankset and can still find a or several FSA energy front derailleurs, just do they are the best long lived, no fuss front derailleur I have found (so much in fact bought and use three myself...)
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby rp » Wed Jan 10, 2018 12:28 am
Cheers!
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Re: Cross threaded: FSA Energy BB386 cold forged crank
Postby jackthelad » Tue Jan 16, 2018 12:17 am
hardly use them, but good to sort out old or new cranks, before installing pedals on them
And anyone in perth that asks on my local facebook forums for help
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