Woodruff Key Failures after lapping?
Posted March 10, 2003 - 11:04 AM
After returning from dealer with a lapped flywheel, retorque to 47 lbs and loctite, sheared yet another woodruff key at around the 16 mile mark in Thursday's Alligator enduro (Daytona, FL). This time I did NOT use the e-start. Also, got no warning. Bike was running great til the time it died. Just seemed to stall in second gear and then wouldn't crank. The total now is 120 miles and three woodruff keys. Once again had to be towed out! Found a head Yamaha tech at Friday's road race and had a nice long heart to heart. They are now going to send a factory tech to my dealer to fix the bike. They seemed surprised to learn I had the problem without using the e-start. Discussing problem with several road race mechanics over the weekend, a prevailing theory is the crank is now damaged and lapping will never work.
Anyone else still having problems? I'll update with details as soon as the bike is fixed.
Posted March 11, 2003 - 08:29 AM
Posted March 11, 2003 - 10:01 AM
Posted March 11, 2003 - 11:10 AM
Dude, chill out. IF yours breaks, give them a chance to fix it first. Call the dealer before you call a lawyer!
175+ miles and no key failure, but a constant concern. ... If I were you I would demand a new crank, rotor, everything. You must document your experience with a letter good enough to present to a judge if it goes that far and it might.
Unless they keep breaking and Yamaha starts stiffing owners after the warranty period, it's not even worth worrying about.
...and this issue about the fear of breaking while on the trail is hogwash. That's always a danger while trail riding. I've lost a whole lot more chains and cables than flywheel keys.
Posted March 11, 2003 - 07:15 PM
IF yours breaks, give them a chance to fix it first
I'm not waiting for MINE to FAIL!Have not had a key fail with 6 street miles on it yet but talked to my dealer today and I'm bringing it in Sat. so they can lap the crank and retorque.The dealers in my area had a meeting with Yamaha guys and thats what they say there doing about it so if nothing else there will be a paper trail on my WR.
03 WR450FR-grey wire mod.,Works connection frame guards,Pro Taper Bars,Carbon Fiber front & rear disc guards,C.F rear caliper guard
Posted March 11, 2003 - 10:17 PM
Posted March 12, 2003 - 10:36 AM
If 3 key failures in one month is not too many, then how many failures is too many?
Zero sheared woodruff keys in 175 miles = 0% failure rate. If you're that freaked out about your 100% reliable WR, then sell it and get something else.
The only concern I have is that someone else will show up at Budds Creek next weekend with a WR450 and I might have to settle for 2nd place .
Posted March 12, 2003 - 10:57 AM
Posted March 12, 2003 - 11:08 AM
There are some on here making a lot of noise about this issue and 82 points out a legit thing. If your unhappy with the bike sell it. There are lots out there that would want it, these things are in high demand. Several of the complainers are old XR owners. You can probably get a brand new, year old model closed out, save some money, and be happy or you can keep the WR450 and worry. If I was that worried about it I would sell it and get something I would enjoy riding without the worry. But to each there own, some enjoy the stress I guess......
Posted March 12, 2003 - 11:34 AM
in the 35 years I've been riding,I have never seen or heard of woodruff key breaking.
My 2000 WR400 was stone reliable as was my 2001 WR250. I hope my 450 is as reliable.
No problems, no worries.
Posted March 12, 2003 - 12:28 PM
or...OMG... he could be towing me out.
Posted March 12, 2003 - 01:59 PM
Posted March 12, 2003 - 03:35 PM
Posted March 12, 2003 - 05:04 PM
Posted March 12, 2003 - 05:38 PM
the dealer to check flywheel torque.The torque was checked and I was called for pickup of my new bike.When
I arrived it would not start. The first key sheared. Lapping compound used on tapers as recommended by Yamaha
and I took my bike home the next day.Did free mods put in EMN needle and 40 pilot jet 160 main jet excellent
response.Bad weather kept me from riding for 2weeks March 9 I rode 23 miles sheared another key.Not while
starting it happened when I slowed for a mud hole and tried to accelerate quickly.Two miles from the truck in
very rough country towed out by a Honda four wheeler
Posted March 13, 2003 - 01:47 AM
Posted March 13, 2003 - 02:45 PM
Posted March 13, 2003 - 08:57 PM
Posted March 14, 2003 - 04:19 AM
You would complain if you found Anglie Jolie in your bed.
"Oh no she has a pimple on her ass".
Quit whining and go riding.