i got a bf 750 with the red primary and white secondary spring with hls module and now she will only go 60mph stock it would go 71mph do you lose speed with the red spring i had the pink one in for a while but had 26 inch tires and it would go 65mph i have the stock tires on now

 

Go back to your stock Secondary.

 

Someone on the forum stated recently that there is top end loss if a stiffer secondary spring is installed. It grips the belt tighter and therefore top end is lost due to friction losses between the secondary sheaves and the belt.

The red primary is a high stall spring that you have to be careful of when climbing a steep incline. It wants to wheelie and could come back over if you're not careful with the throttle.

Just curious....did EPI recommend this spring combination for the BF750?

 

I have the Black Secondary and there was at least a 3-MPH top end loss. Bike before spring changes Quad would easily do 69-70.[img]i/expressions/face-icon-small-sad.gif[/img]

 

i got the hl outlaw clutch kit it cam with red and pink primary and a white secondary

 

My Outlaw Kit came with the EPI Black Secondary, Red & Orange Primaries for my 02 Prairie.[img]i/expressions/face-icon-small-happy.gif[/img]

 

well i took the white secondary out put the stock secondary in and it feels like it is hitting a rev limiter at 60mph what is the deal

 

I doubt that the red spring has anything to do with the speed loss, the white spring I would bet is the culprit. My brothers 650 loss all top speed when we put the heavier secondary spring in it takes a lot force to compress that spring and that must be what is causing the speed loss. My brute will do at least 72 with the red spring and k54 wieghts. I have not topped it out totally yet but I hit 72 and was still climbing. I have had our 700 for a while and have yet to have one problem with the belt I don't really feel that secondary is that much better. My 2 cents. It will also hit 70 or 71 and that is with the 26" 589s not light tires and it doesn't gain anything going to stockers either. You are not even close to the rev limiter you are several thousand off at 60 mph. If it were hitting then the belt would be smoking at that speed cause something will have to give. Hope this helped some. Sam

 

well i took the secondary out no diffrance but the belt slips a little when you pin the throttle but why is it only going 60mph on the pullies the belt looks like it was right on top there were marks may be a 1/4 inch down

 

SwampBF750

You must have changed something (i.e. clutch weights, tire size, ignitor). Check your belt deflection and remove shims if needed. Stock Brutes are running 67-72MPH. However, If you weigh over 300lbs don't expect 71+ on a stock Brute.