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Post by geh3333 on Aug 1, 2013 22:35:30 GMT -5
i installed an 846 powerlink kevlar belt today , i also switched to sliders. i usually used 11 gram rollers so i bought a set of 10 gram koso sliders and 11 gr dr pulley sliders . i decided to try the 10 gr first and the first thin i noticed was a nice gain during takeoff with the rpms up near 6500 . my 0- 50 took about 6 to 7 seconds and then a slower pick up to 60 at 7000 rpms . the only problem was i couldnt seem to get over 7000 rpms on a straight stretch . on small declines i was able to hit my previous top speed of 68 at 7200 rpms . i usually hit that speed at 7800 rpms. so i need to try a lighter slider weight. i think the problem was that i didnt acount for the larger gear ratio due to the longer belt size inwhich i should have went another gram or .5 gram lower. also unlike the slight length difference between the 835 and the 842 , the 846 is noticeably longer. so i ordered 9 gr dr pulley sliders and will post the results. i imagine takeoff will be again increased and hopefully ill see a top en increase .
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Post by justin010304 on Aug 2, 2013 2:12:23 GMT -5
Posts like this bug me, and I'll explain why.
You are supposed to be posting about results of the 846 belt, which I would be curious to hear. But you didn't, you posted about how your change to sliders was. What you should have done was changed the belt and kept everything else the same to actually see the difference going from 842 to 846. Now you threw other variables into the mix and unless you go back you will not be able to provide a valid answer on how it worked.
Also, you said that the belt was noticably longer and easier to see the difference between the 846 and the 842, than it was the 842 and the 835. That is odd because the 842 is 7mm longer than the 835, and the 846 is only 4mm longer than the 842. So in theory the difference should be much more noticable in 7mm of change when you went to the 842 than this.
Throw the rollers back in so you can get a true reading on how much the 846 belt helped.
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Post by geh3333 on Aug 2, 2013 3:16:15 GMT -5
one thing you obviously dont know is that the difference between the 835 and 842 are barely noticeable . forget that its a 7 mm difference ! ask others they will tell you. and the 846 compared to the 842 being only 4mm longer is much longef in comparison. dont complain to me i didnt manufacture the belts . they are all gates belts that i use. as i posted i usually use rollers but i have used sliders before. and my top speed stayed the same , because i wa maxin out the 842 . Now you have my early results with the 10g sliders which increased takeoff but most im sure are interested in top end performance inwhich i will have the results in a few days when the 9g sliders arrive. the difference in the belt length is by itself a plus considering i was expecting a minimal difference. this alone will give a better top end a long as the engine has the torqe to turn th new ratio. The main purpose of this post is to show what type of top end performance , how high the belt climbs on the variator , and if there is any belt wobble or slippage due to th length. one thing i can say i i would not run this belt on a stock variator ,my 842 ran to the top of my stock variator. and as forthe belt wobble or slippage ill let you know when i get the cvt tuned for max performance. ill also post the hieght the belt travels on the variator after i ride a few miles so i can visually see the travel line on the variator. Because im maxin out the 842 belt length it dosent matter if i use rolers or sliders , now takeoff i admit is usually always better with sliders. but as i posted due to the actual difference in the belt length i would have had to dropped a gram iin roller weights due to the gear ratio between pulleys and the i didnt have any 10 gram rollers. after the results with th sliders im pretty confident stating that the 10 g rollers would give me the same top end ill get with the 9 gram sliders but ill have better takeoff with the sliders. For those who want to know if any top end performance is gained with the 846 the info is coming and so far it seems possible. and if you dont know much about belt sizes or rollers vs sliders just ask i clear it up for you . please dont post remarks like  . Thanks |
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Post by geh3333 on Aug 2, 2013 3:49:29 GMT -5
Also i will note that i made this post with the thought that the only reason one would even need an 846 is if they are maxin out an 842 , because if your not then there is no need for an 846 . i would imagine those who own 150's with a bbk are probably maxin out their belts at top speed, unless they have their cvt tuned for lower rpms. so if your maxin out your belt thos post will help you make a decision on wether or not you may want to try out the 846 also you will b givin the info on wether or not the bottom end will take a hit or not. hope this helps out . One of two things will happen when i install the lighter weights . one is hopefully i gain some top end  or ill either not hit my top speed or just hit my top speed which means my 58.5bbk cant turn the new belt ratio fast enough at top end to make the 846 worth using. i just checked the variator to see if i can see where the belt was riding and i after about 60miles there is a ver fine line which is a little over 1/16th of an inch higher then my 842. this is promising . this tells me that i should be able to run 9 or 9.5 gram weights and still pull the belt higher up the vriator then the 842 . now all im hoping for is the extra torque at 7500 rpms to spin the gears faster . |
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