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Honda CB750/900/1100F SuperSport Website: SuperSport Forums |
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Richlkyl000
Twinstar
Joined: Jan 10, 2011
Posts: 161
Location: Burlington, WA
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 Posted:
Wed Sep 17, 2014 3:57 am |
 
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Has anyone ever drilled the return hole on the master cylinder larger? I dont think it would change much except the fluid could return faster to the reservoir.  |
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sonicrete
Red CB1100F
Joined: Aug 19, 2003
Posts: 15472
Location: Lancaster,Ohio
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Wed Sep 17, 2014 4:30 am |
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The main is large enough. The "release hole" is small for a reason. Someone tried it and it made the master cylinder have a dead travel to work. |
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Richlkyl000
Twinstar
Joined: Jan 10, 2011
Posts: 161
Location: Burlington, WA
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Wed Sep 17, 2014 4:37 am |
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| sonicrete wrote: |
| The main is large enough. The "release hole" is small for a reason. Someone tried it and it made the master cylinder have a dead travel to work. |
sonicrete by dead travel to work do you mean that basically if you start to apply pressure to pedel it will have no travel or real feel to the pedal because there is no back pressure? Sorry if that confusing. |
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krgood0
CB1100F
Joined: Jun 18, 2006
Posts: 2527
Location: UK
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Wed Sep 17, 2014 8:41 am |
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It was designed to work correctly with the small hole, so best to leave it as is, just keep it clear.
Keith |
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sonicrete
Red CB1100F
Joined: Aug 19, 2003
Posts: 15472
Location: Lancaster,Ohio
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Wed Sep 17, 2014 6:29 pm |
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I travels "dead" as in no pressure and travels to give more lever play. |
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genesound
Red CB1100F
Joined: Feb 20, 2006
Posts: 11919
Location: Studio City, California
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Wed Sep 17, 2014 10:18 pm |
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When you first push on the pedal or pull the lever, the small hole is still exposed. If it's too large it lets too much fluid rush through the hole as you move the piston the first bit until you're past it. Keeping the hole small, it tends to not flow too much, and so once the piston is past it you haven't lost a bunch of lever and fluid to just emptying the line, so you can build pressure sooner on the piston travel, and have a "higher" pedal or lever action. |
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We do not see things as they are,
we see things as we are.
What might have happened if that which did happen had not happened,
I cannot undertake to say.
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Richlkyl000
Twinstar
Joined: Jan 10, 2011
Posts: 161
Location: Burlington, WA
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Thu Sep 18, 2014 12:47 am |
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| genesound wrote: |
| When you first push on the pedal or pull the lever, the small hole is still exposed. If it's too large it lets too much fluid rush through the hole as you move the piston the first bit until you're past it. Keeping the hole small, it tends to not flow too much, and so once the piston is past it you haven't lost a bunch of lever and fluid to just emptying the line, so you can build pressure sooner on the piston travel, and have a "higher" pedal or lever action. |
Okay thank you guys. Well that settles that. |
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