How does a "bad" tune, take out a 5 pc crank??

[Admiral Akbar]

Motivation for this?

Well,

If the supplier is willing to make it right, I don't see any problem.. Seems like hearing excuses though that they are trying to slime out of it.. I had chronic kit-back problems due to a bad new battery on a 116. Blew a couple ring gears and starter clutch.. Crank didn't do out of true.  After a couple years the crank spread, run out 0.004. Shortly after I sent it off to Hoban I found that SnS would have replaced it... They didn't ask how the bike was tuned..

Max

[04 SE Deuce]

My crank doesn't seem to mind....good tune...bad tune, heck even just a little humming works wonders.     Rick

[blackhillsken]

i dont understand what the big deal is.  imo who gives a rats a$$ so what as long as its getting fixed thats the main answer. as far as the reason why it went bad i cannot comment on that as i did not personally see the crank so i cant say what is wrong.. if that was the reason why it went bad then thats what it is.

I agree, I am sure without seeing it we can tell exactly what caused the problem, (sarcasm)bad tune is a pretty broad statement, too much initial advance at startup (only part of the tune) could cause a cranking rotating assembly to stop and suddenly change direction of rotation upon ignition. Would this slip the crank, doubtful but not immpossible. The more likely answer would be that someone planned on riding this bike hard, very hard, maybe even race conditions being the reason for purchasing the crank in the first place.
I gotta ask, what the hell is the purpose of this thread in the first place? To discredit a reputable business who is making things right whether it was their fault or not?  Motivation for this?  Threads like this are what destroys the overall health of a forum, this is a great place, why ruin it?

Not speaking for Scott, but from my point of view, when you do this for a living, most guys take a lot of pride in doing their absolute best work.  Having someone make suggestions, as absurd as they might be, that substandard work (like a bad tune) can cause an unrelated problem really gets under the skin.  When someone fires at you, you fire back.

[se]

honesty ..hhmmm that will not work in a situaion like this because the crank was not built correctly in the first place. there are a few of these cranks running around and teh owners state they have no problems.

im just stating my opinion and yes i know a bad tune will not slip a crank. i think the tune was mentioned because of the guy who tuned it. also i read on another fourm that cylinder wash out also could of caused it. dont know if it was true or not pure speculaton .
what the mfg of the crank should of said was:: We dont know why the cranks are slipping, the ones we throughly tested did not have issues our R&D dept is looking to rectify the situation as soon as possible.

Obviously they know there is a problem because they are fixing the bike. What i am getting at is if you dont know why if screwed up just say it dont make up another story.
i guess the moon and sun were aligned properly for some to work and other dont . as long as the said customer is happy with the way things are going screw it.

everything else is pure speculation

[HogBag]

Scott
Thanks for the info on the 5 piece cranks slipping under start up due to a bad tune ? I would be very pissed if I shipped one of these cranks to Australia to fit in my bike and it slipped on start up due to a starter map . People have a right to know before they shell out hard earned dollars. I feel sorry for the guy who owns this bike as every time he drops the clutch he will be thinking did the crank twist again. 
Hogbag

[BVHOG]

I think it's painfully obvious why this thread was started, only to

[RKC100]

Instead of bashing a business on an open forum, don't you think it would be more professional on your part to call that business up and talk about it privately? I can assure you that there are two sides to this 5 pc crank issue and you are only hearing one side of the story. I went with the 5pc crank in my 117" and have had NO problems-it is a smooth runner. I will continue to buy that businesses parts because I respect and trust them after having no problems with their products I have used in the past. And also, I know they stand behind what they sell. But if I ever do have any problems, I WILL call them up personally to discuss it in private. Not here trying to ruffle any feathers but it really taints all forums when someone else is always trying to stir the pot. Customer had an issue and the business TOOK CARE OF IT! Unless YOU DO have a hidden agenda. Just say'in.

[FLTRI]

If it were a bad tune, wouldn't we have an epidemic of bad stock cranks? 

Max

Guess the MOCO is lucky very few riders have had emergency braking to avoid whatever and/or have a bad tune?
Wonder if the MOCO tests these engines? Maybe they always have a perfectly tuned bike so the crank doesn't twist, or never have to hit the brakes hard because they know they would twist the crank.
Bob

[ejk_dyna]

<<Guess the MOCO is lucky very few riders have had emergency braking to avoid whatever and/or have a bad tune?>>

Bob,

If bad tunes caused cranks to go out of true...RC Cycles would be getting ten crank repairs + tunes a week instead of ten tunes to fix the bad tunes done before. 

[FLTRI]

<<Guess the MOCO is lucky very few riders have had emergency braking to avoid whatever and/or have a bad tune?>>

Bob,

If bad tunes caused cranks to go out of true...RC Cycles would be getting ten crank repairs + tunes a week instead of ten tunes to fix the bad tunes done before.

[HV]

        I see there are a few members on here that feel they can run the sections as they please and use them as advertising forums ( in round about ways ) ......id say its better to let your work do the talking and concentrate on positive things YOU do...this BS is getting OLD ... Just Sayin

[Deye76]

<<Guess the MOCO is lucky very few riders have had emergency braking to avoid whatever and/or have a bad tune?>>

Bob,

If bad tunes caused cranks to go out of true...RC Cycles would be getting ten crank repairs + tunes a week instead of ten tunes to fix the bad tunes done before.

Ain't that the truth. Every time the float stuck on those Bendix carbs that came on shovelheads, if the lower ends had come unglued, Truett & Osborne would be billionaires by now. 

[Flat Dog]

Correct me if I am wrong, but the manufacturer of that crank listed 'bad tune' as a possibility, not as a definite cause. Maybe it changed, but in the original thread at that other forum, I got the idea that the MFG was just shooting out guesses to satisfy the customer, not making statements meant to be taken as gospel.

Another 'good on them' for making things right, and going above and beyond to make things right (still a PITA to have to go through another total tear down, but now the owner has MOL a new motor.) Too many smaller businesses go under because they don't have the attitude of service after the sale.

[wfolarry]

Reading the OP I thought it was just another lame excuse being thrown out there. After reading all the expert opinions I find out that it's being fixed under warranty, it wasn't the tuners fault & everything is coming up roses except for a few bad apples out there. Amazing what thoughts can come out of 2 sentences. Here I just thought it was funny. 

[PanHeadRed]

Larry, you got a five piece sense of humor.