13 replies to this topic

[macgyver1969]

Slows down too fast as soon as I let off the gas it feels like it's gearing down and slows down very fast doesn't coast at all 🤔 Is this normal it feels like the track is to tight but I've loosened it off and made no difference thanks and advance??

[Go Fast or Go Home]

If you're going up the mountain then it's normal.

 

Sorry--Couldn't resist.

 

Don~

[wwracer]

Better than going to slow to get fast... 

[Ditchbangr zx]

Haha, both good answers 👍

To the OP, are you talking on hard pack trails? Sleds don't really coast that well to begin with.

[Dirt Mover]

What sled? What's the conditions?

You are driving your sled too fast when ... The brakes are smoking. Lol most times the "back shift" are your brakes, I rarely use the left hand lever.

[mbret2004]

Is there an aftermarket clutch kit in it? If so, this can affect the backshift a lot. FWIW, The use of your brake is a direct result of poor throttle management.

Edited by mbret2004, 24 March 2017 - 11:27 PM.

[westrip]

newer sled clutches are designed to backsift so you have the motor to slow down instead of brakes. works great in the mountains, we love it!

[macgyver1969]

LOL I didn't realize there's so many comedians on this site 😁 And know the brakes are fine I actually had to use the once or twice so I didn't go off the edge of the trailer LOL it's a 2005 adrenaline summit 144 and it almost feels like it's back shifted ? It's almost like a one-way bearing on a side-by-side as you slow motor down as you let the throttle off it feels like it's breaking 🤔🤔

[macgyver1969]

Oh yeah stock clutch I don't think anything is ever been done to it and it doesn't matter whether it's a hard pack trail or powder does the same thing thanks and advance

[Dirt Mover]

That's what is supposed to happen fairly instant like as you let off the throttle the clutches should back shift. A Summit with long deep lug track causes a lot of "torque feedback" to the driveline which signals the clutch to back shift. A Summit also usually has a low-angle helix to help bring a quicker back shift as well.

That said. If you are still convinced something is wrong you should be checking for excessive drag in the driveline caused by bad bearings in the skid typically.

[macgyver1969]

Cool thanks for the explanation I really don't mind it at all just wasn't sure if it was proper not I'm fairly new to the long track sledding😁

[Dynamo^Joe]

You can control the strength of the engine braking by....

 

engine idle speed.  If need lower engine braking strength, then turn the idle speed up.  If the engine idles at 1200 right now, then turn it up to 1500~1600.  Maximum engine braking strength is based on engine vacuum.  if the throttle plates are opened more to allow the engine to rev higher at idle, then the engine will have less vacuum to energize braking strength and declutch at a higher track speed.

 

belt deflection - less tight belt deflection will cause the system to declutch at a higher mph.  Turn the belt deflection adjuster on the outside of the secondary clutch to a lower number.  You can turn it to a lower 1/2 number.  The settings do not need to be exactly on a whole number.  Example - if the belt deflection cam is at position #4, then loosen off the 3 fasteners and turn the cam ring to 3-1/2 and tighten fasteners again. 

 

ramp angle - primary clutch.  Simply remove the stock 415 ramps and install a set of more aggressive 413 ramps.  The 413 ramps are the next harder pushing (more aggressive) ramp with an angle on the start that will provide less engine braking strength - and declutch at a higher track speed.

[macgyver1969]

Thanks I will try that I wouldn't mind a little less aggressive breaking !!!

[Haigskid]

Check the rollers in the secondary clutch. My sled was doing that and the cause was the rollers were completely gone.