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Discussion Starter · #1 ·
Went to Cochran on tuesday returned today with a friend we both have 06 mach z's I had put in 410 ramp 16.5 solid pins and stock pink-pink spring in mine we left the other one stock I had to stop in Kap at a dealer to have a stiffer finish rate primary spring installed sled would only pull 7500 then fall to 7000. With the new spring finish rate of 420 and clicker on 3 she holds the rpm 7800/7900 BUT if you can belive this with all the long pulls we did the stock mach pulled away every time we tryed different starting speeds did not matter We seen 120 mph on spedo side by side and mine would stay there and the stocker would pull away I will be changing mine back to stock. Both sleds have 900 miles on them and the stocker does not have the setscrews bulliten..........
 

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a 420 spring may be great for a thousand feet or so but long heat soaked pulls for miles will build too much heat in the sheave: the 7800 or so revs you are seeing are slipping the belt while your buds stock soft spring lets the sheaves hold the belt better with less heat building up and less slippage. He'll stroll on down the trail leaving you at "only 120"....(man thats fast! Hope you guys carry a few spare drive belts!) Good luck.
 

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Discussion Starter · #3 ·
BlueMax said:
A 410 ramp will not work in a 06 Mach Z. It was recommended by BRP tech for an 05 prior to changing ECU program.
[snapback]686947[/snapback]​
Can you recomend a setup for the 06 that will out pull the stock setup thanks
 

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BlueMax said:
A 410 ramp will not work in a 06 Mach Z. It was recommended by BRP tech for an 05 prior to changing ECU program.
[snapback]686947[/snapback]​
blue max i have an 06 mach with a pink white spring, 410 ramps,16.9 g pins in pos 4 pulls7800 on tach, with a 50é40 helix. i geared it down to do 109mph. we race 870 feet. gears are 21-43. i have a 1.5 ripsaw track and we race in snow. do you have any tips 4 me im beating a 800 rev STOCK now but hope 4 better. any suggestions. stock ramps 434, 433,415,414. i dont know which is better. heard you guys talk about 410s so i made them work,would 433s be better
 
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