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Post by skuttadawg on Dec 3, 2012 23:41:04 GMT -5
So far I went from 6 grams to 4 then mixed to equal 5 . Well that was ok when it was a 50 but with the BBK I need heavier weights as it hit 9,000 at 50 MPH and will hit 11,000 and I can go up a huge hill at 8 to 9k RPMs . Take is not that fast compared to some but it has way more midrange and top end . I am thinking of trying 1k clutch springs and leave the stock contra spring for now since I can go up hill just fine . I will be getting that bb thing for the contra spring as I have only heard good reviews about it .
So I am going to try 7 gram rollers and see how they do and get sliders later since nobody has them in town and I have to order them .
BTW I have 130/60/13 tires not 10s and have no idea what the gears are .
Would like to hear from any who have a similar setup
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Post by usmcdoc on Dec 4, 2012 9:22:45 GMT -5
So far I went from 6 grams to 4 then mixed to equal 5 . Well that was ok when it was a 50 but with the BBK I need heavier weights as it hit 9,000 at 50 MPH and will hit 11,000 and I can go up a huge hill at 8 to 9k RPMs . Take is not that fast compared to some but it has way more midrange and top end . I am thinking of trying 1k clutch springs and leave the stock contra spring for now since I can go up hill just fine . I will be getting that bb thing for the contra spring as I have only heard good reviews about it . So I am going to try 7 gram rollers and see how they do and get sliders later since nobody has them in town and I have to order them . BTW I have 130/60/13 tires not 10s and have no idea what the gears are . Would like to hear from any who have a similar setup Kevin...same engine and tires as mine...I am about 11,000 rpm at 51 mph. I tired 7 gram weights and while it did decrease my midrange revs....when it finally wound up to 'high gear' it was still revving too high...all the 7 grams did was take away from my 'used to be' rocket like take offs. 0-30 in about 75 feet with the 5 gram sliders..then 30-51 very quickly while turning 11,000 rpm. That is why I have chosen to up gear... BUT..upgears for these type Minarelli engines as you already know....are impossible to find in the US...and many overseas companies carry them..but state right on their website "We do not ship to the US"...  |
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Post by skuttadawg on Dec 4, 2012 10:21:37 GMT -5
Well my takeoff is not a rocket compared to an Elite I rode , but decent and strong in the midrange but over revs at the top end and I want the RPMs down as MPG sux and Id like to have more top end without redlining the engine well exceeding it
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Post by 2strokd on Dec 4, 2012 11:12:28 GMT -5
Im betting your gears are too short for your liking? If you have tried marking the vari face to see if you have full belt travel and you do, this is your problem. You can switch out for an aftermarket vari and rear pulley but you will always hit that "wall" if your gears are short in the trans..
Try taking the cvt cover off, mark the clutch bell and the wheel at the hub (were the brake shoes are). Now spin the wheel slowly and count the revolutions of the bell. One full wheel rotation will get your number.. For example, on my Kymco Cobra i get 11 clutch bell revolutions to one wheel rotation. If you have say 13 bell to one wheel rotation your gears are too short for top-speeds over about 55-60MPH without the engine screaming.
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Post by usmcdoc on Dec 4, 2012 11:23:15 GMT -5
Im betting your gears are too short for your liking? If you have tried marking the vari face to see if you have full belt travel and you do, this is your problem. You can switch out for an aftermarket vari and rear pulley but you will always hit that "wall" if your gears are short in the trans.. Try taking the cvt cover off, mark the clutch bell and the wheel at the hub (were the brake shoes are). Now spin the wheel slowly and count the revolutions of the bell. One full wheel rotation will get your number.. For example, on my Kymco Cobra i get 11 clutch bell revolutions to one wheel rotation. If you have say 13 bell to one wheel rotation your gears are too short for top-speeds over about 55-60MPH without the engine screaming. That is right about where mine is 13+...would be nice if I used it for Tractor pulls...vice transportation...  |
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Post by skuttadawg on Dec 4, 2012 11:27:54 GMT -5
With 7 grams how many RPms at 50 mph ?
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Post by 2strokd on Dec 4, 2012 11:32:24 GMT -5
:disco: Yeah, they are good for that :laugh:
Here are some digs from an old set-up using 13:1 final drive
:spin:
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Post by usmcdoc on Dec 4, 2012 11:41:40 GMT -5
With 7 grams how many RPms at 50 mph ? About 9,000...but takes a long time to get up to speed...almost like when it was stock....just a higher top end when it finally gets there.  |
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Post by skuttadawg on Dec 4, 2012 11:49:45 GMT -5
Sweet . What is strange its not like its geared too low with fast take offs but over 50 it over revs like too light of weights
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Post by 2strokd on Dec 4, 2012 12:06:34 GMT -5
Yep. I understand.. Here is the same scooter running over 50mph and "gearing out" so to speak.
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Post by skuttadawg on Dec 4, 2012 12:13:22 GMT -5
Its like I need an over drive
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Post by 2strokd on Dec 4, 2012 12:34:48 GMT -5
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Post by skuttadawg on Dec 4, 2012 12:44:58 GMT -5
Wow thanks ! I love to pass cars and make their ears ring since exhaust note is so loud
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Post by skuttadawg on Dec 6, 2012 0:50:49 GMT -5
Yes it runs great until it tops out and is under driven at high speeds but I zoom uphill with a running start . I hit 9,000 RPMs at 50 and would rather have the RPMs at 7,500 to save gas and engine wear . I can not give it WOT downhill as it over revs hitting 11,000 RPMs and I can not enjoy a downhill zoom as much since I do not wan tto blow it up or fry the crank
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