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Old 09-26-2012, 03:30 PM   #1
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Default Indian Linkert question?

Can anyone tell me why post-'42 Indian Linkerts had a
"tit" on their idle bleed well caps, and H-D Linkerts did not?

Thanks in advance,

....Cotten
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Old 09-26-2012, 03:58 PM   #2
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Default Linkert idle bleed slot question?

Folks,

Does anyone have any solid evidence how the idle bleed slot was cut into Linkerts? (See attachment)

It is deeper than any available modern .009" endmills can cut,
and even producing such cutters would have been a phenomenal feat, much less producing the hundred of thousands that were machined.

Thanks in advance,

...Cotten
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Old 09-26-2012, 04:10 PM   #3
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Default Re: Indian Linkert question?

You have to remember that H-D stayd with the tride and true, Indian was allways trying new things.

My thoughts are H-D didnt need it as it cost more to make than the gains in performance......

...Roach.
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Old 09-26-2012, 04:58 PM   #4
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Default Re: Indian Linkert question?

Quote:
Originally Posted by Destralo Roach View Post
You have to remember that H-D stayd with the tride and true, Indian was allways trying new things.

My thoughts are H-D didnt need it as it cost more to make than the gains in performance......

...Roach.
Destralo Roach!

Most 'historians' see Indian as stagnant in development after the mid-'30s, leading to their demise: "Failure to mutate".
It was H-D that went OHV, then swingarm, etc.

Do you believe that little tit was a serious extra production cost?
(L&L even made two sizes.)

And what was the mechanism for gains in performance, that Indian found it worthwhile through '53?

Can anyone even tell me what it does?

Thanks for an answer, it is appreciated,

...Cotten
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Old 09-26-2012, 05:02 PM   #5
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Default Re: Indian Linkert question?

Well that dosnt take into acount the Verts Huh!?
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Old 09-26-2012, 05:04 PM   #6
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Default Re: Linkert idle bleed slot question?

that looks like a plugg, so the machining would be easy....
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Old 09-26-2012, 05:52 PM   #7
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Default Re: Linkert idle bleed slot question?

No evidence Cotten, but if I was doing that I would go into the throat with a blade type cutter ground to specific width and located where I wanted it and move the body into it until the holes were intersected. I sure wouldn't try to do it in that hole!
But then that is just me, and like I said, no evidence!!
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Old 09-26-2012, 06:36 PM   #8
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Default Re: Linkert idle bleed slot question?

Quote:
Originally Posted by Destralo Roach View Post
that looks like a plugg, so the machining would be easy....
Look again, Destralo Roach.

Dragstews!

Unfortunately, I am hearing impaired, and telephones are an obstacle.
(That's why I can type like the wind!)
But email to [email protected] works best for most.

Robbie!

The sloppiest cuts I have ever encountered are in the previous attachment, as our best clue.

One fellow on the FHP forum asserted that he knew, or whatever, a fellow who performed the operation with something like a "large dental drill".

If so, then what sort of drilling/milling bit was used to cut a .009" wide slot through .030"+ of bronze, three eighths of an inch down in a 5/16" wide hole?
As I commented previously, just producing the cutters would have been a feat.
The production of hundreds of thousands of carburetors with this delicate bleed slot is as enigmatic as the building of the Pyramids.

Thanks to all for replying before the thread is locked.

....Cotten
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Old 09-26-2012, 06:42 PM   #9
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Default Re: Indian Linkert question?

Quote:
Originally Posted by Destralo Roach View Post
Well that dosnt take into acount the Verts Huh!?
Rolling over on your death bed and puking is not innovation.

My Linkert question applies to the Indians we all recognize, from the decade before Indian's demise, with the Model Ms that they used at Daytona, etc.

....Cotten
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Old 09-26-2012, 07:10 PM   #10
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Default Re: Indian Linkert question?

Quote:
Originally Posted by Cotten View Post
Rolling over on your death bed and puking is not innovation.

My Linkert question applies to the Indians we all recognize, from the decade before Indian's demise, with the Model Ms that they used at Daytona, etc.

....Cotten

Well that got a chuckle out of me....
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Old 09-26-2012, 09:01 PM   #11
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Default Re: Linkert idle bleed slot question?

cotten, this is not an answer to your question, but I'm always fascinated by the manufacturing of anything it seems.

I knew next to nothing about casting metal and only enough about machining to be dangerous. Is it possible that was done, either:
  • during the casting process w/ something that went away during (isn't there some kind of "loss" method in casting), or was removed afterwards?
  • post casting if the material (at least in that area) were at a certain temp where it where it was simply soft enough to plunge a small implement of the desired shape/length in order to make the hole?
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Old 09-26-2012, 09:15 PM   #12
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Default Re: Linkert idle bleed slot question?

could that be cut using abrasive wire?
guitar strings come in gauges .008 ...up ,been that way for a long while

WLA came out with a front mounted bar to cut thru wires strung across road ways intended to remove bikers head! ( ....the cutting concept)

Last edited by Friday; 09-26-2012 at 09:23 PM.
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Old 09-26-2012, 09:29 PM   #13
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Default Re: Indian Linkert question?

Indian went swingarm 1913
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Old 09-26-2012, 11:58 PM   #14
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Default Re: Indian Linkert question?

Quote:
WLA came out with a front mounted bar to cut thru wires strung across road ways intended to remove bikers head! ( ....the cutting concept)
Now that is some smart shit! Do you even have a clue what you are talking about!!
Robbie
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Old 09-27-2012, 04:50 AM   #15
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Default Re: Indian Linkert question?

WW2 dispatch rider decapitation!! youd find pics if youd look....the steel rod on the front of ....WLA
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Old 09-27-2012, 11:18 AM   #16
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Default Re: Indian Linkert question?

This idle hole plug started in the '41 parts book and I suspect it was done to affect idle fuel dispersion behind slot.
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Old 09-27-2012, 12:04 PM   #17
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Default Re: Indian Linkert question?

Quote:
Originally Posted by underrust View Post
This idle hole plug started in the '41 parts book and I suspect it was done to affect idle fuel dispersion behind slot.
Underrust!

I hope you get this reply before it is deleted by hostile "moderators", as my last post was...

The "tit" has been missing upon nearly all M342 and M642 carbs that have crossed my benches, even though they retained nickel plating rather than cad.
(For what that's worth...)
Coincidentally, they all have thick LS spring collars, also discontinued after '42.
I have encountered unmolested M441s with both kinds of bleed plugs, but other machined variances as well.

And yes, we must suspect it had something to do with mixing within the idle bleed "well", or cavity.
The only corollary I can come up with is the "bubble-buster" tit upon later Indian oil pumps.

One can only wonder if it would improve Harley mixing!


...Cotten

Last edited by Dr. Benway; 09-27-2012 at 12:38 PM. Reason: Relevant carb info left, sh*t stirring removed.
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Old 09-27-2012, 01:36 PM   #18
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Default Re: Indian Linkert question?

Cotten, you want a better running Linkert on a Harley or Indian? Use a "Chriss Ward" special venturi, Basicly what you do is take a M74B venturi and cut it at the main jet emulsion tube, the front 1/4 is gone, do the same with one more venturi and revers that one and mate them together, take that to a machinest and have a whole one made, insert in linkert and man you will notice the diference!!

All most like a S&S supper B!!!!
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Old 09-27-2012, 02:35 PM   #19
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Default Re: Indian Linkert question?

That slot could have been done on a broach, granted it would be like a coping saw blade and maybe even done by hand back in those days.
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Old 09-27-2012, 03:48 PM   #20
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Default Re: Indian Linkert question?

....still not there?

Carborundum been around since the 1890s, silicon carbide impregnated wire also diamond impregnated wire, cuts thru any metal just like that slot in the photo, wire saws and reciprocating wire saws been around a long time.
Even prisoners escape thanks to using guitar strings and sand!

Im still surprised the anti decap bar on dispatch bikes was an unknown????
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