tuning a se50 variator

[swimmingfree]

Greetings:

Does the tach go to 6600 whenever you open the throttle wide? Or is that a max RPM at top speed? max rpm at top speed never gose above 6660
Either the engine is lacking power altogether, or something else is preventing it from getting to its optimal RPM.
Intake restricted somehow - a gummed-up air filter - or carbon-caked exhausti?it a new cvclye top end with less them 200 miles on it and a 95 jet
A very weak Contra spring in the driven pulley can do that too, along with too-heavy rollers.it has a 1500 spring i think the rollers are 8s or 7s
Even a stock Spree should want to rev higher than 6600. Something's not right.

[bakaracer]

the stock motor revs well past 6600 rpms. keep in mind a stock 87 elite 50 with just a keli variator with 10to1 gears,90/90-10 tire , .30 milled head ,stock carb/airbox/reed cage 90 main,and unrestricted exhaust will top ot at 50-55mph. 55 on a slight hill or wind to your back. that equals in the mid 9k range rpm wise. if its not reving past 6600, either your tach is wrong or your not running engine parts that are not stock.

[bakaracer]

also a ruckus variator will not be effective if your not using a 18mm wide belt.

[swimmingfree]

ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk and stock carb 95 jet a some what belt less the 500 miles on it ( Honda Elite SE50, Drive Belt 1987 23100-GG2-751) when i was running the 6 gram rollers it wood tack out at about 8500 rpm but top speed was the same ...
swimmingfree

[Wheelman-111]

Greetings:

Measure total variator load. If it revved to 8500 with the 6es and 6600 with "7s or 8s" then something in between might be "just right". A 6 or 12-gram jump in total load likely will overshoot the ideal. An old spring, particularly if made in a certain Asian country, will weaken from a +1500 to a Minus 1000 over time. Try a new spring before you test the perfect roller setup.

Top speed may be 38 because it's revving too low or too high. Then again, maybe that's all the power the engine has.

[swimmingfree]

just went out and did some thing ...
compression is 140...
plus gap is 25 color is a little darker then a candy bar
8 gram rollers max rpm is 6660max speed is 35 today..
6 gram rollers max rpm is 7540 max speed is 35
the black line is with the 8 the white is with the 6 its my ruckus variator


sorry i said 7 back a ways dont have 7
swimmingfree

[bakaracer]

what 64cc kit are you using? if you got a big bore you should for sure be going faster than 40mph. something else or a bunch of stuff is not working right.

[paulpauly7]

my se50 with a malossi bbk ct intake ported block 21mm oko 42p 98m zx trans shimmed front pully koso variater 5.5g rollers malossi yellow center spring with tourqe controller 18mm zx belt 11.1 gears and a 3.00 tyre hit 50mph no problem 58mph with a slight down hill.I never had a tach on it but according to your chart then it would be pulling between 10000rpm and 11000rpm

[swimmingfree]

the 64 bbk is from vtcycle im running the stock oil pump with the cable and 64 to 1 oil in the tank...
i think i have a bigger thing going on now .. i think my crank bearing are going out in it the only thing i can think of at high rpm it make a not so funny nose .... are there's parts i can get from ??? or do i have get them from a honda dealer???
thank for your input ...
swimmingfree

[PhilippeL]

I ordered my OEM AF05E crank bearings, gasket kit and seals from Partzilla.com. You can do a price search for many part # at the same time and their service is great. Prices also!

http://www.partzilla.com/parts/search-b ... umber.html

Philippe

[swimmingfree]

PhilippeL thank you big time
one question there are 3 diffident Part Number for part 11 and 13 are all 3 the same part???
i just call the loco honda dealer and thay say 43 dollers
thank you big time ...
swimmingfree
here a short cut to the parts
http://www.partzilla.com/parts/search/H ... parts.html

[Pete M]

Partzilla averages 25% below list price. My local dealer sells 10% over list. I order all my Honda parts from them. If you put the crank in your freezer for a couple of hours you can get the bearings off the crank with a couple of large screw drivers 180 degrees apart. Good luck.

[swimmingfree]

Pete M thank will do ....
swimmingfree

[swimmingfree]

by the photo the 8 grams ( black line ) rollers looks to be the best the other ( white line ) is the 6 gram rollers... the 6 give me more rpm like 7300 but top speed it the same 35 and then creep you to 40...
if my compression is (140 ) to high will it lower my rpms????...


ps
just did a math thing the hose hold about 2 cc so my compression will be higher then the the 140 then the test shows..
swimmingfree

[swimmingfree]

hay i wonder if its the read block that is not letting anuff mix in the motor it a stock 3 read one and it came with a 2 read stock it did 8500 rpm with the stock 50cc jug...
what do you guys think ???
hay if someone has a 2 read block for sale let me no....
swimmingfree