40mph speed secrets revealed
- Thread starter foureasy
- Start date
some older jap thumpers had twin carbs one opened to half way then the other kicked in this gave the effect of good smooth low end with a crisp boost into top end!,tt600,xr500/600
dammm read 15 pages only to get left hangin..... no progress since march? finding this site makes me wish I still had machine shop job.....(um not really, dont miss smell of burned up unchanged oil)
heres the next chapter grin
http://motorbicycling.com/f13/hybrid-chinese-motors-performance-tuning-14204.html
http://motorbicycling.com/f13/hybrid-chinese-motors-performance-tuning-14204.html
Thanks Four, I gotta ask....is it me, cuz i just quit drinking few months ago, and need something to obcess over. or does this MB stuff grab hold of ya like crack? I'm stayin up all night reading here....diggin out dads old tig to see what it will weld....my neck is sore now cuz when I pedal around, its swivilin around looking every where for a old panther layin around....my eyes hurt from lookin at every cruiser on craigsist from Santa Barbara n San Luis Obispo (im in mid of the two) I think when its time to order, Venice MB's oughta cut me a deal, its his fault i'm like this now......saw his black boardtracker n I was hooked! at least my probation officer cant throw me in jail for this......I hope....LOL
Nice Head looks like it will run cool!it is a dual carb setup. here is the aforementioned swiss cheese. sorry about the cell phone pics.
You have the first hemi china girli will periodically add pictures and the reasons why, for a few of the things that i have done in the quest for speed.
i did this to my combustion chamber to make it a more efficient "squish" type chamber. it helps to promote a more even flame travel and less risk of detonation. not to mention the added benefits of increased compression. the ideal size of the squish band is 1/2 of the bore area, which i have come pretty close to.
weld it up
face it and grind it out
i got five on it
I don't think foureasy had heat problems guys... shattered pistons perhaps, launching his bike offn his dyno mebbe: YouTube - M4H01239.MP4 - but heat? *shrug* He's moved on frm alla this to http://motorbicycling.com/f13/hybrid-chinese-motors-performance-tuning-14204-9.html & http://www.youtube.com/watch?v=IYnx7CQaYHA if ya wanna see the latest madness
clay, how fast does your beast go theese days? if that thing does 40 theres no way anyone with a std ht is going over 50 as stated on the darkside
I would think that it would all depend upon the size of the gears: how small is the smallest one could get? and how many steps does the bike offer to get to that point?
Where did you get an 11 tooth sprocket from?
The front sprocket on a Chinese 2 stroke is 10 teeth
That's interesting. I don't know what the gearing is on a Schwinn Point Beach Cruiser (mine is better with 36t than 44t), but I'll bet your bike would have a 'sweet spot' with a top gear matched with just the right engine sprockets. It's just a matter of experimentation and figuring out what those gears are...
I know someone makes all kinds of gear sizes, but I can't think of who it is right now... This is an interesting consideration..
I know someone makes all kinds of gear sizes, but I can't think of who it is right now... This is an interesting consideration..
