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Post by erensaritas on May 9, 2020 3:15:16 GMT -5
Hi everyone,
I've a 2018 unrestricted 4t kisbee and looking for the best combination of rollers/springs to get 70kmh top speed and the highest torque as i can,
I just changed my 6gr stock rollers with 6gr dr. pulley sliders, and i got 63kmh top speed. (i was have 69kmh with stock rollers) Dealer says that they will adapt after 150km usage and it will be faster. What do you think, can it be true?
I would like your advices, Best regards.
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Post by GrumpyUnk on May 9, 2020 20:21:47 GMT -5
I do not believe the dealer. The Dr Pulley sliders don't seem to be 'sliding' far enough to get you full travel and the higher ratio that gives higher speed. They may be too light compared to the stock sliders. tom
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Post by erensaritas on May 10, 2020 5:26:32 GMT -5
Thanks a lot Tom, I didn't weight the Dr. Pulley before install but it described as 6gr on its box. but i doubt that now. i'll change back to stock tomorrow and weight the pulleys, then we see it...
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Post by Zino on May 10, 2020 6:38:09 GMT -5
Dont believe the dealer The weights push you to a certain rpm out of the box . They rae not all the sudden going to work 10 percent better .
Go the other direction with weight . Cut 6 pieces of similar sized aluminum foil . Fold it and ball it up and jam it in the middle of 3 of the sliders . Go foil every other one like this for balance . 6/f/6/f/6/f/ Then Go all 6 with foil see if you like that better . Buy a slider weight in that range I found I like going with slider a 1/2 gram above what I like best for rollers .
You also can test for Full belt travel by marking the variator from the inner to outer edge with a sharpie after you have found the best weight. Run down the road full blast and measure how much sharpie is left on the variator face . If you have more than 3 mm you maybe able to shim for more top speed .
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Post by erensaritas on May 10, 2020 7:59:29 GMT -5
Hi Zino, thank you so much for great idea! Actually im happy with my top speed, i just wanted to get more torque, i saw this video:
it says low ratio is lower and high ratio is higher with this slider design,
it should have more torque with same weight in my opinion? isn't it right?
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Post by Zino on May 10, 2020 8:34:16 GMT -5
Sliders work mildly better than rollers on both ends low rpm and high rpm imho.
So in practice a 5 gram slider works both like a roller at 4.75 grams for spinning up rpms and a 5.25 grams for belt travel.
I find I like slightly higher weight sliders 1/2 gram than rollers for the way I set up my cvt .
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Post by erensaritas on May 10, 2020 9:09:32 GMT -5
in line with this comments my sliders should be lighter than my stock 6gr rollers, i guess dealer sent me 5 or 5.5gr sliders by mistake. i will remove and weight them tommorrow, will write updates again,
Thanks a lot!
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Post by GrumpyUnk on May 10, 2020 9:30:25 GMT -5
Take a look at Zino's post. I think he was saying that he goes a bit HEAVIER on the sliders than rollers, so don't jump into lighter sliders until you are sure. A test is to do as he suggested even earlier. Take some aluminum foil, cut a half dozen pieces all the same, stuff the pieces into the hollow of the sliders. Test run. Ruminate on the results. If you like what they do/did, acquire a new set of sliders that are equivalent to the weighted ones you just tested. When testing, you can add 'odd' amounts to 3 of the 6 sliders, lower or higher, being sure to space the weights equally around the variator.(to avoid imbalance.) e.g., 3H and 3L set around alternating H L H L H L so the equal weights are equally spaced from each other. The foil modified weights should not be left in long term as the likelihood of the foil moving is a possibility, which would lead to an imbalance at least, possibly a jammed up variator. tom
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Post by erensaritas on May 12, 2020 13:26:20 GMT -5
Hi again; Today dealer gave me 2 set of sliders as 5 gr and 5.5 gr, i tested all and happy with 5.5gr, Top speed came back to 70+ kmh and i feel better acceleration! Thanks for your helps
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Post by fox250fox on Jun 13, 2020 11:37:46 GMT -5
Hi mate...….. you say your 2018 is unrestricted? I have a 2019 and have been told that it cant be done!? Is yours fuel injected?
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