back from the dyno...

Started by wannabfast, July 21, 2011, 04:04:22 PM

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wannabfast

took my bone stock 796 to the dealer to get a baseline dyno before i start modding it..
Baseline dyno run

pulled a 76hp and 51ft/lb

not bad considering its stock

i never noticed how red that rear pipe gets when riding until after i saw the video again... that pipe goes just past the left thigh when you have your legs down
11' M796, SC project GP slip-ons, 1100DS cams, BMC air filter with modified airbox cover, asv levers, 14t front sprocket

justinrhenry

76 posts
76 hp

coincidence?

i don't see a red pipe. 
_____
2013 Honda CB1100D
2006 Honda ST1300
2003 Ducati Monster 620ie

wannabfast

Quote from: justinrhenry on July 21, 2011, 04:42:47 PM
76 posts
76 hp

coincidence?

i don't see a red pipe. 
well its glowing nonetheless
11' M796, SC project GP slip-ons, 1100DS cams, BMC air filter with modified airbox cover, asv levers, 14t front sprocket

pennyrobber

The pipe will get pretty hot sitting on the dyno as you are revving high with very little air passing past the engine.
Men face reality and women don't. That's why men need to drink. -George Christopher

hillbillypolack

Quote from: pennyrobber on July 21, 2011, 05:37:47 PM
The pipe will get pretty hot sitting on the dyno as you are revving high with very little air passing past the engine.

There ought to be a box fan at full tilt if that's an air cooled engine. . . .

ducatiz

Quote from: hillbillypolack on July 21, 2011, 06:23:43 PM
There ought to be a box fan at full tilt if that's an air cooled engine. . . .

yup, that's the way i've seen it.. big ass shop fan.
Check out my oil filter forensics thread!                     Offended? Click here
"Yelling out of cars, turning your speakers out the window to blast your music onto the street, setting off M-80 firecrackers, firing automatic weapons into the airâ€"these are all well and good. But none of them create a merry atmosphere of insouciance and bonhomie quite like a revving motorcycle.

wannabfast

Quote from: hillbillypolack on July 21, 2011, 06:23:43 PM
There ought to be a box fan at full tilt if that's an air cooled engine. . . .
there were 2 large fans at the front of the bike, blowing air past both sides and front of the engine
11' M796, SC project GP slip-ons, 1100DS cams, BMC air filter with modified airbox cover, asv levers, 14t front sprocket

booger

The glowing pipe is because of lean stock fueling. Once you get your fueling sorted out your cylinder head temps & overall engine temps will go down.
Everybody got a plan 'till they get punched in the mouth - Mike Tyson

2001 M900Sie - sold
2006 S2R1000 - sold
2008 HM1100S - sold
2004 998 FE - $old
2007 S4RT
2007 Vespa LX50 aka "Slowey"
2008 BMW R1200 GSA

SacDuc



For reference this is what Ducati claims in its website:



http://www.ducati.com/bikes/monster/796/index.do


sac
HATERS GONNA HATE.

ducatiz

Quote from: bergdoerfer on July 21, 2011, 08:15:23 PM
The glowing pipe is because of lean stock fueling. Once you get your fueling sorted out your cylinder head temps & overall engine temps will go down.

Don't these bikes have a catalyst in those bugles?  If so, that will make them super hot pretty fast.
Check out my oil filter forensics thread!                     Offended? Click here
"Yelling out of cars, turning your speakers out the window to blast your music onto the street, setting off M-80 firecrackers, firing automatic weapons into the airâ€"these are all well and good. But none of them create a merry atmosphere of insouciance and bonhomie quite like a revving motorcycle.

Blue

Quote from: wannabfast on July 21, 2011, 04:04:22 PM
took my bone stock 796 to the dealer to get a baseline dyno before i start modding it..

pulled a 76hp and 51ft/lb

not bad considering its stock

i never noticed how red that rear pipe gets when riding until after i saw the video again... that pipe goes just past the left thigh when you have your legs down
Nice, where did you get the bike dyno'd at?

Quote from: SacDuc on July 22, 2011, 09:33:44 AM

For reference this is what Ducati claims in its website:



http://www.ducati.com/bikes/monster/796/index.do


sac
The link to the Ducati website lists the Monster 796 at 84hp (64kW)@ 8250rpm of power and a torque to 58lb-ft (78Nm) @ 6250rpm.
Which is at the crank, not the rear wheel. 
With 10% loss due to the drive train, it would be ~76hp and ~52ftlbs.  So, you are right in the ball park.  Time to mod!

Quote from: bergdoerfer on July 21, 2011, 08:15:23 PM
The glowing pipe is because of lean stock fueling. Once you get your fueling sorted out your cylinder head temps & overall engine temps will go down.
I have seen this on other Ducatis as well.  The rear pipe glowing due to heat.  Most dynos are set up for inline fours, which have the headers on the front, right in front of the fans that blow on the bike to cool.
Looks cool.

Good Luck! [beer]

wannabfast

#11
Quote from: ducatiz on July 22, 2011, 09:38:40 AM
Don't these bikes have a catalyst in those bugles?  If so, that will make them super hot pretty fast.
the cats are in the muffler bodies
heres another video of a different run, and you can see it change from glowing to not
2011 Ducati monster 796 stock

and heres the dyno sheet, its very similar indeed
11' M796, SC project GP slip-ons, 1100DS cams, BMC air filter with modified airbox cover, asv levers, 14t front sprocket

booger

It's a fact that the overall temps get lower upon richening the fuel mixture. Modding this one, I assume, will entail a fuel mapping tune of some ilk, and also new race-style mufflers that don't have cats in them. So if the superheated cats in the stock cans are contributing to the glowing pipes, then that is one more thing to lower the temps of the pipes.

I bought a Termi kit right away and subsequently had the whole exhaust on my bike ceramic coated, so I really never saw any glowing pipes. I know all of them do it with stock fueling, but it's more common at the header. Having a red hot pipe at my inner thigh would give me pause. I don't think I would want that. The simple fact that everyone should know by now is that the stock fueling is kinda bad for the bikes. It's too lean, and lean runs too hot. They have to be lean in order for Ducati to get past EPA regs. Then there is the profit they can make on the direct remedy, which are the Termi kits. If anyone wonders how Ducati can afford to replace all the plastic S*R tanks the Termi factor would be my guess. But I digress.

Of course there is the insane heat wave happening. Every time I open the door it's like I'm checking on a pizza.
Everybody got a plan 'till they get punched in the mouth - Mike Tyson

2001 M900Sie - sold
2006 S2R1000 - sold
2008 HM1100S - sold
2004 998 FE - $old
2007 S4RT
2007 Vespa LX50 aka "Slowey"
2008 BMW R1200 GSA