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> New project:Adapting motorcycle Throttle Bodies, this should be "interesting" :)
jhadler
post Apr 19 2006, 04:40 PM
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Hey Mike,

Looks pretty slick there!

Are those rubber skirts just adding extra sealing ability? Or are they structural? If they're structural, how will your throttle linkage account for movement of the throttles on the soft mounting?

-Josh2
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Brad Roberts
post Apr 19 2006, 04:42 PM
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And Josh.. pulls out the only question I had left for Mikey!!

This was my only concern.

I'm a tad confused on all of this.. are the Jenvey's and TWM's really that expensive?


B
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jhadler
post Apr 19 2006, 04:50 PM
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Sorry there Brad, didn't mean to steal your thunder there... (IMG:style_emoticons/default/biggrin.gif)

I recall that Mike got those TB's out of a junkyard Kawasaki. Super cheap. Granted, the engineering time he's invested is pretty big, but it's his own time...

Be nice if a cheap kit can come of this.

-Josh2
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Mueller
post Apr 19 2006, 04:54 PM
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QUOTE(jhadler @ Apr 19 2006, 03:40 PM) *

Hey Mike,

Looks pretty slick there!

Are those rubber skirts just adding extra sealing ability? Or are they structural? If they're structural, how will your throttle linkage account for movement of the throttles on the soft mounting?



-Josh2


With electronic throttle actuators, AKA E-throttle, no outside forces to act upon the sealing rings (IMG:style_emoticons/default/smile.gif)

Just kidding (IMG:style_emoticons/default/smile.gif)

I'll be adding a bracket (thought I addressed that earlier, must have been on another thread or site)

Jenvys and TWM are about $800 min. per 4 throat application...this does not include air filters or injectors.

I have enough parts for 2 engines, so far I have an average of $200 into each one with an hour per added (at $5 an hour, hahahaha)

I really don't need these anymore, I just want to finally finish a project without abandoning it (IMG:style_emoticons/default/screwy.gif)


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jhadler
post Apr 19 2006, 06:45 PM
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Where are you pricing them from? I found TWM's for $500 for the set. Including fuel rails. Of course, that still didn't include linkage or manifolds. And if you already had that stuff, then boneyard parts make a lot more sense.
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Mueller
post Apr 19 2006, 07:00 PM
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QUOTE(jhadler @ Apr 19 2006, 05:45 PM) *

Where are you pricing them from? I found TWM's for $500 for the set. Including fuel rails. Of course, that still didn't include linkage or manifolds. And if you already had that stuff, then boneyard parts make a lot more sense.


I was going by their "list price".....

$361 X 2 (T/B's)
$173 X 1 (fuel rail kit)
$50 X 4 (air horns)

Right there it is $1095 without injectors or TPS or aircleaners.....

even if I only save a few hundred bucks all together, I'd rather take a few months to spend the money than all at once



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Mueller
post May 2 2006, 11:41 AM
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A little bit more progress....

I only have the one length velocity stack to t/b adapter tubes but it wouldn't be that hard to make a few different lengths.

You can see the overlap that I had to deal with, these are not as pretty as they should be, I screwed up and removed about .100" too much from one...no big deal, I'll figure something out (IMG:style_emoticons/default/smash.gif)

Still struggling with the aircleaner choice, I'll have a better idea once I mock these up on the motor in the car for a clearance check.

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Mueller
post Nov 5 2006, 10:21 PM
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finally worked on them again...all 4 manifolds are machined...now to tackle the linkage and the air cleaners...

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a little dreaming here (IMG:style_emoticons/default/mueba.gif)

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Mueller
post Nov 5 2006, 10:24 PM
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if you didn't notice, I modified the air-horns...makes the install a little nicer and simpler without the overhang of the original ones...hope you don't mind too much Paul (IMG:style_emoticons/default/biggrin.gif)
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rick 918-S
post Nov 5 2006, 10:32 PM
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! would love to have those! (IMG:style_emoticons/default/drooley.gif) Nice work Mike! (IMG:style_emoticons/default/clap56.gif)
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McMark
post Nov 5 2006, 10:35 PM
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Nice work Mike! (IMG:style_emoticons/default/smiley_notworthy.gif)
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turboman808
post Nov 5 2006, 10:53 PM
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This is a great idea. I have seen it many times on hondas and glad to see it works here as well. At that price I got to wonder why people still want to mess with carbs.

What are you gonna use for engine management?

Also dare I say these stacks look cooler then TWM!!!
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spunone
post Nov 6 2006, 02:22 PM
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Mike you Hack what did you do to the stacks???? (IMG:style_emoticons/default/chairfall.gif) If ya need a different type let me know ie taller or shorter bigger or smaller.They look great and great job trimming down that can be alittle tricky. (IMG:style_emoticons/default/thumb3d.gif) CYA
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Mueller
post Nov 6 2006, 03:52 PM
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QUOTE(spunone @ Nov 6 2006, 12:22 PM) *

Mike you Hack what did you do to the stacks???? (IMG:style_emoticons/default/chairfall.gif) If ya need a different type let me know ie taller or shorter bigger or smaller.They look great and great job trimming down that can be alittle tricky. (IMG:style_emoticons/default/thumb3d.gif) CYA


I thought you'd get a kick out of it, hahaha

For trimming them down I made a holder for the base and a large diameter bull nose live center..worked like a charm, took a few minutes per stack...

for machining the manifolds, I got that down to less than 15 minutes per manifold...the setup was a PITA...I'd make a fixture if I was going to do them again which I don't plan on (IMG:style_emoticons/default/smile.gif)

great thing about the CNC is that you can walk away while it's working and do something else.....

I saw the stacks I'm guessing you made for Jake for those aircleaners??....pretty slick and tempting to duplicate (for personal use only Jake (IMG:style_emoticons/default/smile.gif) )
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Mueller
post Nov 6 2006, 03:56 PM
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QUOTE(turboman808 @ Nov 5 2006, 08:53 PM) *

This is a great idea. I have seen it many times on hondas and glad to see it works here as well. At that price I got to wonder why people still want to mess with carbs.

With these, there are "hidden" costs such as the R&D and then you have to have to proper tools to do the job...it would cost too much if you had to pay a shop to fab all the custom parts needed....

What are you gonna use for engine management?

Link Engine Management

Also dare I say these stacks look cooler then TWM!!!
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McMark
post Jan 16 2007, 01:44 PM
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Since someone was asking about this project, I thought I'd bring it to the top...
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toon1
post Jan 16 2007, 01:53 PM
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thank's Mark,

So Mike how's this going??


Any more pics?
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Mueller
post Jan 16 2007, 03:17 PM
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QUOTE(toon1 @ Jan 16 2007, 11:53 AM) *

thank's Mark,

So Mike how's this going??


Any more pics?


Not much progress, I did buy some bicycle shifter cables with sheathing(covering) to start on the linkage, I am going to attempt to use cables instead of hard linkage like normally used.
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r_towle
post Jan 16 2007, 03:21 PM
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QUOTE(Mueller @ Jan 16 2007, 04:17 PM) *

QUOTE(toon1 @ Jan 16 2007, 11:53 AM) *

thank's Mark,

So Mike how's this going??


Any more pics?


Not much progress, I did buy some bicycle shifter cables with sheathing(covering) to start on the linkage, I am going to attempt to use cables instead of hard linkage like normally used.



Take a look at the 2-1 snowmobile cable setups...there are alot of them, and they all fit only certain snowmobiles, but how they do it...kinda simple really.

There is one on an aircooled airplane web site also, decent little 2-1 cable system.

Rich


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Aaron Cox
post Jan 16 2007, 03:30 PM
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look at freestyle BMX bikes...
they have "gyro" which splits the cables from 1 -2 and then 2-1 .... really simple...
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