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Steve
 Post subject: Re: clank, claNK, CLANK!
PostPosted: Sun Oct 28, 2012 4:45 pm 
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Joined: Sat Mar 10, 2012 8:12 am
Posts: 710
I keep hearing the sound of the motor going over and over, and it's been a few days.

Sorry it went, glad it did not cause an accident (lock up/etc)

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steve
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Ric
 Post subject: Re: clank, claNK, CLANK!
PostPosted: Sun Oct 28, 2012 7:39 pm 
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Joined: Thu Jun 09, 2011 6:16 am
Posts: 2146
Location: North Alabama
Ha !
Dr Moo is always Entertaining.
:clap:
Glad you didn't lock up and go down John.

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Busy doing more riding than wrenching.......
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Ja-Moo
 Post subject: Re: clank, claNK, CLANK!
PostPosted: Sun Oct 28, 2012 9:20 pm 
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Joined: Tue Jun 07, 2011 6:37 am
Posts: 10460
Location: Rio Rancho, New Mexico
Thanks guys! I do cover the clutch "just in case"........ :wtf: ;)

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........
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BarryB
 Post subject: Re: clank, claNK, CLANK!
PostPosted: Sun Oct 28, 2012 10:33 pm 
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Joined: Wed Jun 08, 2011 10:23 pm
Posts: 3826
Location: Colorado Springs, CO. USA
Ric wrote:
Ha !
Dr Moo is always Entertaining.
:clap:
Glad you didn't lock up and go down John.


+1

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This is true. Where I grew up the hills were so steep and long, when your ball rolled down the hill you just said "screw it"...
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Jim
 Post subject: Re: clank, claNK, CLANK!
PostPosted: Sun Oct 28, 2012 10:39 pm 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 9844
Location: North Central NC
Even though that would have made a good video too.

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If it surges, that's normal, upshift.
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1971Kaw500
 Post subject: Re: clank, claNK, CLANK!
PostPosted: Mon Oct 29, 2012 5:54 am 
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Joined: Mon Mar 19, 2012 1:12 pm
Posts: 266
Location: Prescott, AZ
Scrambler 73 asked the question and I haven't seen any replies yet.

What kind of performance gains are expected from slotting pistons?
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scrambler73
 Post subject: Re: clank, claNK, CLANK!
PostPosted: Mon Oct 29, 2012 9:14 am 
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Joined: Wed Jun 08, 2011 10:03 pm
Posts: 2605
Location: Birthplace of Minnesota
H2RTuner wrote:


With no inlet skirt, it can't break off and fall into the engine.




I like this ^^^ :thumbup:

that said, how much do you suppose bore (and piston) longevity suffers because of the reduced contact (piston to wall) area?

and I know, I know....most people barely ride these bikes anyways, so who cares.... :roll:

would still like to know what the difference in HP is between 4 holes and 2 slots.
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Jim C
 Post subject: Re: clank, claNK, CLANK!
PostPosted: Mon Oct 29, 2012 9:38 am 
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Joined: Thu Jun 09, 2011 9:12 pm
Posts: 1902
Location: Rockville, MD USA
[/quote]
would still like to know what the difference in HP is between 4 holes and 2 slots.[/quote]

Big +1
I can see the importance for a race bike, but if the percentage gain is not that great, the holes are a no brainer for a street bike

OTOH, I don't recall slots to be a problem for the SE guys running sled reed set-ups; maybe due to their motors being run for such a short time and no down shift / compression braking loads?

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Zambia
 Post subject: Re: clank, claNK, CLANK!
PostPosted: Mon Oct 29, 2012 10:15 am 
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Joined: Wed Jun 08, 2011 10:08 pm
Posts: 1901
Location: Campbellville Ontario
Wouldn't the piston want to rock with no inlet skirt?
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Walms
 Post subject: Re: clank, claNK, CLANK!
PostPosted: Mon Oct 29, 2012 10:31 am 
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Joined: Wed Jun 08, 2011 10:04 pm
Posts: 2223
Location: Just north of Toronto, Ontario
Yeah, I'd imagine it would sound pretty crappy... They sound bad enough when the skirt is only collapsed by .002".
Not to mention the pistons are tapered and the skirt being the largest diameter, I just don't see it being viable on a motor where you want some mileage out of it.

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