Shimano Saint, non driveside stripped.

[landz]

Hey there, yesterday i was riding down a track me and some crew found the other day, hit a mid sized drop... Probably was almost 6ft in the air before i came down, when i hit the ground there was the most awful sound i have ever heard.

When i inspected further, the non drive side of my shimano saint crank had stripped the spline on the inside and was pretty much parallel with the drive side crank. when we returned to the troopcarrrier we removed it and there was aluminium shards everywhere and the spline was stuffed out.

The problem is that i had tightened it to shimano's specified torque of 45N-m with a torque wrench.

So to avoid this post becoming story time, 2 questions:

How much should i expect to pay for a new non drive side saint crank?

And how tight does anyone else do their saints up?

 

[ollybev]

one word : Diabolus
was a bad sound though

 

[sprocket]

how old are they?
i'd try for a warranty job

 

[landz]

Yeah the warranty is a no go, bought them second hand off farkin trading area.

Probably wouldn't get a warranty as i installed them myself anyway.

on the bright side, (this is the point where you all call me a dickhead) i put them back on that day and tightened the hell out of them and they held up pretty well, still ill be buying a non drive side tomorrow anyway.

 

[tu plang]

one word : Diabolus
was a bad sound though

Diabolus cranks are more trouble than they are worth.

 

[|Matt|]

Diabolus cranks are more trouble than they are worth.

I haven't actually seen a pair off a bike, but isn't the bolt that holds non drive crank to the axle the same bolt that preloads the bearings for the BB?

 

[faceplant666]

mine came off during a race the platic cap broke, i reckon u might be looking at 200 min, maybe a whole new set.

 

[j5ive]

Just checked the price list $150-200 depends on your lbs.

 

[tu plang]

mine came off during a race the platic cap broke, i reckon u might be looking at 200 min, maybe a whole new set.

they were almost definitely installed incorrectly if that was the case.

 

[blackjack]

i agree with tu_plang. if you have your pinch bolts done up. there should be no pressure on the plastic preload cap to make it snap

 

[tu plang]

I haven't actually seen a pair off a bike, but isn't the bolt that holds non drive crank to the axle the same bolt that preloads the bearings for the BB?

yes, as seen on the STPZERORIDAH

 

[No Skid Marks]

I don't use a torque wrench because I'm lazy and confident in my knowledge,and doing both bolts up together(1/8th turn at a time),however mine have worked a little loose over months.,I'd say I had close enough to correct tension,perhaps this is what happened to yours.I'm guessing everything beds in a touch since first installed,Yours werent new but still possibly the case. All nuts and bolts on your bike should be checked fairly often to be safe.I'll check mine with a torque wrench now to be sure.
It's dasapointing but I wouldnt let it put you off the Saints.

 

[landz]

yeah, it hasn't put me off yet. im near enough to 120 kg right now riding a hardtail and they havent let me down yet...

Just checked the price list $150-200 depends on your lbs

i just now have between 150 and 200 reasons to tighten them up before another ride.

 

[faceplant666]

It was done by a lbs but i crashed up the track which i think may have done it.

 

[mcoccia]

The problem is that i had tightened it to shimano's specified torque of 45N-m with a torque wrench.

What did you tighten to 45Nm? The bearing cups or the pinch bolts. Shimano specifies the bearing cups at 35-50Nm whilst the pinch bolts that hold the non drive side arm are only 10-15Nm.