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[Twolanerider]

I owe apologies to someone.  Trouble is I forget who.  The subject of bridges and compression releases came up two or three months ago.  Someone saw the thread two or three weeks ago and ask for imagery.  I promised it for the near future but have forgotten who requested it. 

To whomever I owe the pics; here you go.  Sorry for forgetting who wanted these.

Standard bridge laying in a head with rough layout marks to show where to start working with a holesaw:

[Twolanerider]

Heads with releases installed to give an idea of what you're working around:

[Twolanerider]

If you're doing anything extra, like chrome plastic caps on top of the releases, be sure and allow room for that:

[Twolanerider]

And with a very little time and effort, a holesaw to make the initial cut, and a small rotary grinder and buffing wheel to finish the edges can leave perfectly functional cylinder head bridges for use with compression releases.

[sadunbar]

And with a very little time and effort, a holesaw to make the initial cut, and a small rotary grinder and buffing wheel to finish the edges can leave perfectly functional cylinder head bridges for use with compression releases.

I did something very similiar (less the awesome powdercoating and diamond cutting) to allow access to my compression releases.  I have not taken pictures, but I will.  I didn't use a holesaw - I just milled clearance on a Bridgeport.  But, I like the end result!  Yours look great!   

[SBB]

Clearly I am wayyyyyyyyyyyyyyy behind on this build.
When did the compression releases show up?

 

[Twolanerider]

I did something very similiar (less the awesome powdercoating and diamond cutting) to allow access to my compression releases.  I have not taken pictures, but I will.  I didn't use a holesaw - I just milled clearance on a Bridgeport.  But, I like the end result!  Yours look great!   

Scott, a buddy here has a full machine shop.  He'll let me in evenings or weekends.  So the problem was almost deciding which way to clear the material.  It was easier to spend 45 minutes in my own garage with a holesaw and a dremel than anything else though.  Some time the easy solution really is the best.

[Fired00d]

Clearly I am wayyyyyyyyyyyyyyy behind on this build.
When did the compression releases show up?

 

Not to speak for Scott, but I guess this is similar to something someone we know is doing (holding back) on the mods they making to their SERG.

* Fired00d is still waiting for those said "upgrades" to that "slightly modified" SERG.

 
Ride Safe,
Fired00d
 

[SBB]

Not to speak for Scott, but I guess this is similar to something someone we know is doing (holding back) on the mods they making to their SERG.

* Fired00d is still waiting for those said "upgrades" to that "slightly modified" SERG.

[/s]
Ride Safe,
Fired00d
 

WAIT!

I hear some noise in the background.

Can my computer have static?

NAW!

It's winter time, it's just the wind blowing!

SBB

[Twolanerider]

Clearly I am wayyyyyyyyyyyyyyy behind on this build.
When did the compression releases show up?

 

Chip, during the zipped up effort it was my choice.  And as we've discussed I decided against them.  Since those heads could not be reused the new head choice took the compression releases choice away from me.  The button fly resurrection is using the HTCC heads and they are machined for releases from new.  So... there we go.

Static CR is going to be in the 10.25:1 range.  So it would've been an iffy call one way or the other.  As is they'll likely get used on hot days for hot restarts.  Rest of the time, not so much.

[Fired00d]

WAIT!

I hear some noise in the background.

Can my computer have static?

NAW!

It's winter time, it's just the wind blowing!

SBB

Butthead!!!

 
Ride Safe,
Fired00d
 

[SBB]

Chip, during the zipped up effort it was my choice.  And as we've discussed I decided against them.  Since those heads could not be reused the new head choice took the compression releases choice away from me.  The HTCC heads are machined for them new.  So... there we go.

Static CR is going to be in the 10.25:1 range.  So it would've been an iffy call one way or the other.  As is they'll likely get used on hot days for hot restarts.  Rest of the time, not so much.

Thanks Don!

Now I'm going to tell you what was told to me.

Not really hearsay but something I consider a fact based on who told me.

Brad from Freedom Cycle said that in the higher elevations it wasn't necessary to use the C/R's.

But at sea level and the 500' elevation where I lived it would be necessary.

The SEEG cranked fine in Reno without them.

Home and the beach it labored with out them.

He said, the higher the elevation the thinner the air!

Always thought that was an interesting reason!

 

[Twolanerider]

Thanks Don!

Now I'm going to tell you what was told to me.

Not really hearsay but something I consider a fact based on who told me.

Brad from Freedom Cycle said that in the higher elevations it wasn't necessary to use the C/R's.

But at sea level and the 500' elevation where I lived it would be necessary.

The SEEG cranked fine in Reno without them.

Home and the beach it labored with out them.

He said, the higher the elevation the thinner the air!

Always thought that was an interesting reason!

 

Atmospheric pressure is going to push in only so much volume.  If that volume happens to be denser that is a difference.  The zipped up version did ok without releases.  On rare occasion if the engine had gotten very very hot I'd have to be sure and start it in neutral.  The Buttonfly Resurrection is going to have a similar CR.  So having them, just in case, doesn't bother me at all.  Especially since they're mostly hidden.

[rednectum]

twolane, great work and love that red powder.

just a recommendation, but i would devise a tool (maybe a bent wire) that i could use to pull up on the release if it ever stuck in the open position (as they WILL do). and carry that tool in your bag.

great mod!! you got your hole drilled yet henry??/

[Twolanerider]

twolane, great work and love that red powder.

just a recommendation, but i would devise a tool (maybe a bent wire) that i could use to pull up on the release if it ever stuck in the open position (as they WILL do). and carry that tool in your bag.

great mod!! you got your hole drilled yet henry??/

Oh lordy, been there and done that on motors past.  Already found the little bent fork tool thingy that'd been thrown in the junk drawer of the tool box and moved it over to the bike .


It's too bad there's not a better more completely reliable manual release.  For what they do they're effective enough.  But they've really not changed a bit in years and years and years.  And they came to motorcycles from other applications where immeidate reliability every time wasn't a great concern anyway.