To dyno not
To dyno or not
Cruiser
Joined: Mar 2012
Posts: 165
Likes: 0
From: Sin City
If a bike grenades while on the dyno, that engine had a problem before it was put on the dyno. And that is exactly where you want it to fail on a stationary platform inside a building. You do not want that problem to reveal itself when your on the highway trying to pass a semi accelerating to get around the big truck while in traffic.
People get real surprised at a dyno run because it is one of the few chances you get to stand close to a bike running hard and you feel the ground shake with all the noise and energy. Just because YOU are not accustom to seeing and feeling a bike motor at WOT on a dyno does not mean that dyno tuning will hurt an engine.
People get real surprised at a dyno run because it is one of the few chances you get to stand close to a bike running hard and you feel the ground shake with all the noise and energy. Just because YOU are not accustom to seeing and feeling a bike motor at WOT on a dyno does not mean that dyno tuning will hurt an engine.
Tourer
Joined: Mar 2010
Posts: 265
Likes: 2
If a bike grenades while on the dyno, that engine had a problem before it was put on the dyno. And that is exactly where you want it to fail on a stationary platform inside a building. You do not want that problem to reveal itself when your on the highway trying to pass a semi accelerating to get around the big truck while in traffic.
People get real surprised at a dyno run because it is one of the few chances you get to stand close to a bike running hard and you feel the ground shake with all the noise and energy. Just because YOU are not accustom to seeing and feeling a bike motor at WOT on a dyno does not mean that dyno tuning will hurt an engine.
People get real surprised at a dyno run because it is one of the few chances you get to stand close to a bike running hard and you feel the ground shake with all the noise and energy. Just because YOU are not accustom to seeing and feeling a bike motor at WOT on a dyno does not mean that dyno tuning will hurt an engine.
Last edited by 03psd; Mar 29, 2013 at 07:24 PM.
Road Warrior
Joined: Mar 2010
Posts: 1,505
Likes: 56
From: Vancouver Island, British Columbia
Over a tank of gas?!! Most tuning sessions shouldn't last more than 3 hours and that is if they have to build the map, that shouldn't be necessary in most instances. I am talking about WOT pulls here. There could be more time spent with load control eddy current to simulate driving conditions. Unless they are doing a break-in on the motor I just don't see it taking most of the day and 1+ tanks of fuel.
Road Captain
Joined: Sep 2011
Posts: 661
Likes: 2
My 2009 Ultra (stage-1) has been dyno'd twice and I HIGHLY recommend it... A dyno is expensive but worth it IMO... Just prior to the dyno make sure all the oil is changed/fresh... The process is about as near-perfect a diagnostic/tuning procedure as you are going to get and when done properly the stresses are minimum... Dyno(s)/Doctors are not perfect (but they are excellent)... Mistakes can be made, cells can be overlooked especially in the 'weird' areas... I would caution to look most carefully at those cells/KPa scenarios that are true 'outliers' particularly those that will only get exercised at high elevations when it is extremely hot and the bike is heavily loaded going up long/steep inclines...
As far as the waiver-thing goes... The dyno tech may not know the existing condition of the engine (it could be a 'set-up') AND if you sign a waiver under any duress or if the operator is negligent renders it null/void... Courts/judges often frown on waivers... Sure, I'll sign your waiver, but that doesn't necessarily mean that I have no rights...
As far as the waiver-thing goes... The dyno tech may not know the existing condition of the engine (it could be a 'set-up') AND if you sign a waiver under any duress or if the operator is negligent renders it null/void... Courts/judges often frown on waivers... Sure, I'll sign your waiver, but that doesn't necessarily mean that I have no rights...
Last edited by user_1534GD; Mar 30, 2013 at 08:15 AM.
Road Captain
Joined: Jan 2013
Posts: 615
Likes: 36
From: tx
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Tourer
Joined: May 2011
Posts: 300
Likes: 6
From: South Carolina
One of the biggest advantages the dyno has is you can generate data much quicker than smart tuning data on the street. Smart tune live makes it easier to home in to areas you want to tune. It seems to me after updating to the latest software cells are easier to load. After a 40 min data run on my new bike smart tune had about enough cells filled to rewrite the whole map. Still after I'm done tuning it'll go on the rollers and something will be found that I missed.
Billy
Billy
Extreme HDF Member
Joined: Apr 2006
Posts: 10,449
Likes: 46
From: Roswell, GA
Carl