So, years ago i had this post, and mentioned the intake. https://www.2strokeworld.net/forum/index.php?topic=2122.msg18153#msg18153
I sat on the file for a while and finally reached out to Steve Burgess (the guy that 3d prints all the stuff for rds in the uk) to try to do this.
well, finally got a result. :whoop: :celebrate:
(https://www.2strokeworld.net/wp-content/uploads/LC-HYBRID/printed-y-boot/lc-yboot_17.jpg)
(https://www.2strokeworld.net/wp-content/uploads/LC-HYBRID/printed-y-boot/323951132_3330276370560963_3297691162621296685_n.jpg)
lower support. it keeps the carbs supported nicely, all the 'bad' flex on the intakes is basically negated.
(https://www.2strokeworld.net/wp-content/uploads/LC-HYBRID/printed-y-boot/lc-yboot_11.jpg)
excuse the embarrassing rusty bracket that will be removed very soon.
(https://www.2strokeworld.net/wp-content/uploads/LC-HYBRID/printed-y-boot/lc-yboot_19.jpg)
also.. test fit to matts 400.
(https://www.2strokeworld.net/wp-content/uploads/LC-HYBRID/printed-y-boot/lc-yboot_400-test-0102.jpg)
i need to make the neck after the y about 1" shorter, and set it up to use a shorter all foam filter. this sill not clear a battery box of any kind, and the filter isn't really -ideal-, but this should work really, really well as it is for me. After i get the 2nd revision done, and IF Steve wants to sell them, they will be good to use on bikes with battery boxes.
this clears the frame rails by a mile, does NOT neck down anywhere in the bends. Hopefully can get an updated design done and over to Steve so he can offer them if he's willing.
:righteous: :righteous:
I'm curious if the material is a little bit flexible to handle vibration.
it is. not as pliable as a stock y boot but pretty good
Superior! What's the ID of the carb bellmouth end?
58mm
Did you have to re-touch your jetting?
I havent tuned it yet but i assume its going to have to go up on the main.
shorter version to clear battery boxes and use a uni up-4300 already drawn up and sent. this will be the one that would be good for basically everybody. i would imagine it will fit an rz as well. we shall find out.
Nice work Mark! :thumbs: I can see it selling very well once released to the lay public/ market. :clap:
I am a player for 2 if they aren't too pricey.
did some test runs and tuning yesterday. will go up 1 on the main but ran great as it was. played with needle and pilot, but landed back where it was (middle) as with the uni filters.
(https://www.2strokeworld.net/wp-content/uploads/LC-HYBRID/printed-y-boot/rd-lc-y-boot-test-and-run_06-1-rotated.jpg)
HOWEVER, the low end and transition into the power band was MUCH better and midrange was way more linear. so, actual useable improvements.
(https://www.2strokeworld.net/wp-content/uploads/LC-HYBRID/printed-y-boot/rd-lc-y-boot-test-and-run_18.jpg)
terrorizing the local business parks. there was a guy out there on a yzf250 as well cranking big wheelies across the fields as well, came over saw what i was up to and we both :affirmation:
(https://www.2strokeworld.net/wp-content/uploads/LC-HYBRID/printed-y-boot/rd-lc-y-boot-test-and-run_14-1.jpg)
Steve just posted a pic of the 'new' prototype i drew up last week, shorter and accepts a flanged air filter, should clear battery boxes. :cheerleader:
(https://www.2strokeworld.net/wp-content/uploads/LC-HYBRID/printed-y-boot/335486174_1185952148747927_1336704961707101011_n.jpg)