PDA

View Full Version : QSC clutch review


"Bankrupt"
04-16-2010, 03:18 PM
Just got done installing my QSC clutch kit. Tan primary, yellow/black secondary, 35 gram weights x6.

The bike setup is a 2009 Outlander 800R XT with HMF slip on, HMF gen 3 optimizer, 28" Zillas on 14" ITP 212's. 54 hours, 529 miles, factory belt.

First off the engagement... Stock was around 1850 and was very "jerky" when trying to take off at low RPM's. It was near impossible to slowly move the bike when you were loading or unloading. Inching forward was impossible. After the kit was installed my engagement is around 2700-2800 and is much much much smoother. It's very nice to be able to inch the bike forward without having the bike lurch and jump. It's awesome. Couldn't be any better.

Take off... Stock, the bike would pull the front tires in the air of you stayed on the gas hard and would eventually take the nose towards the sky after 15-20 feet and you would have to feather the throttle. After the kit it is near impossible to launch at full throttle without winding up on your bumper within 5 feet. You can launch full throttle and you have to almost instantly back off the throttle and just feather it to keep the nose up.

Shift out... Stock it would turn 6700-6800 RPM's at WOT and would stay there pretty much to top speed. It pulled fine and had a steady power curve all the way to 50-55 (where it would peak but keep pulling to over 70). After the kit the shift out is around 7800-7850 and the motor turns up much quicker and stays turned up through 45 (space was limited so I could only get to 45). It seems to pull about the same as the stock clutch at WOT (after you feather it to get the front end back on the ground).

I called Adam @ QSC and discussed the clutch and we decided the weights are a little light and that by changing 3 of the 35's to 37's my RPM's would drop 300-400 and get me back into the peak power range of the engine. 7800 is fine but I'm loosing 4-5 HP being over the "sweet spot" of the engine. Adam is a great guy and talked to me for almost 20 minutes on the phone going over my setup and what we needed to change. He said all I needed to do was send him back 3 weights and he would ship me 3 more at no charge. He even said if that didn't work he would keep sending me anything I needed to get the shift out where it needed to be at no charge. You can't ask for better customer service than that.

Over all I give the setup a 9 out of 10. The engagement is awesome, the pull at WOT from take off is amazing. Once we get the weights right and get the shift out tuned in I would be willing to give this kit a full 10 out of 10!!!!

hampster_rancher
04-16-2010, 03:34 PM
Great wright up Eric! What are they calling the set up that you are running?

atvmodster
04-16-2010, 04:40 PM
His set up is indentical to mine. I just talk to qsc and they let me know exactly what im running.

ready2goriding
04-16-2010, 06:11 PM
Great evaluation! QSC builds the kit custom for what you want, I believe? I think my mind is made up now as to what brand I want. Thanks for posting this info!

silverz98
04-16-2010, 06:21 PM
yes the qsc on my 650 woke it up for sure. with the 30in backs witch are a heavy tire. i lost some topend but dont worry about that since 30in back shouldnt be running 65. it still might be there but the secdary spring being stiff slows the shift out way down to get there and havent had that much room to let it open up. but from 0-45 hang on alot faster there. and your right it crazy how the engament way higher but smoother than stock. in low fro ma deas stand still it go right ot bumber if you stay in it. high i let it get rolling before i stab it so belt dont have chance to slip like adam told me todo and it will pick up the front and care them 10feet or so then start looking at sky. again i dont have 800 like you guys but my 650 with adams kit pulls the 30in backs great

"Bankrupt"
04-16-2010, 06:54 PM
After some more riding around the yard and on the road in front of our house, I can add this..

Anything from a 0-13 MPH rolling start it will still pull the front tires up with ease and you can keep them up for as long as you want (or you can stay on the gas and end up on the bumper). That's not sitting on the back of the seat or yanking the handlebars. That's a normal riding position and doing nothing but pinning the gas. After about 14-15 MPH rolling start it will lift the front tires for 15-20 feet but settle back down and you can stay at WOT.

This is amazing!!!! All of this with my 280 lbs on the bike.

ready2goriding
04-16-2010, 07:00 PM
After some more riding around the yard and on the road in front of our house, I can add this..

Anything from a 0-13 MPH rolling start it will still pull the front tires up with ease and you can keep them up for as long as you want (or you can stay on the gas and end up on the bumper). That's not sitting on the back of the seat or yanking the handlebars. That's a normal riding position and doing nothing but pinning the gas. After about 14-15 MPH rolling start it will lift the front tires for 15-20 feet but settle back down and you can stay at WOT.

This is amazing!!!! All of this with my 280 lbs on the bike.

Wow! I'm 290 lbs.
(before tonight!)

got wake?
04-18-2010, 09:12 AM
another happy customer, glad to hear it! did you go with the standard mudpro weights or the medium tire size weights? if your not getting a big over rev, then going with three 37's will make a big difference. if the rpm's drop from the 7800/7850, then the intermediate weights might work better. the zilla's are way lighter than atvmodster's silverbacks.

"Bankrupt"
04-18-2010, 10:19 AM
Well after 30 miles of trail riding yesterday I have to come back and revise my review.

My RPM's are way way way too high. Not just on shift out but all the time. To run down the trail at 10 MPH it's turning over 4500 RPM's. To even get to 15 MPH I'm turning anywhere from 5500-5900 RPM's. It sounds and feels like I'm in L all the time. The motor stays rev'ed up and it feels like I'm about to blow it up just to trail ride. I have to get the RPM's way down because the way it's setup now it's not trail friendly at all. It made the bike no fun to ride at all and that's the first time I've ever been able to say that about this bike.

silverz98
04-18-2010, 12:07 PM
bankrupt i know what your saying there as my 650 with kit same but i got use to it. with you only running the 28 zillas and cause there light put the stock 2nd dairy back in see it it help with the rpm trail riding. as the stiffer spring in it now slows the shifting as i was told by adam. adam told me its there to old in in the low gears longer for the big heavy tire guys. since im running 30in backs imm live with it for a while. as i dont want no belt slip. when i was runing the 27in zillas adam didnt recomend a 2nd dairy spring untill i got the 30in backs. worth a try

got wake?
04-18-2010, 12:35 PM
that setup works awesome with bigger and heavier tires. but i've never tried them in a bike with less than 30" silverbacks.

ready2goriding
05-19-2010, 07:27 PM
Did this ever get resolved? Just curious. I'll need a clutch kit when my 29.5's show up!

got wake?
05-19-2010, 08:50 PM
Did this ever get resolved? Just curious. I'll need a clutch kit when my 29.5's show up!


i'd hold off for about 3 weeks. the cat's out of the bag about QSC making adjustable weights. quinn spilled the beans talking about the quadworx secondary. i've been bugging adam for adjustable weights for a while now, and he's coming through with them!

stricker76
05-19-2010, 10:56 PM
Really? Guess i'll wait to order too.

got wake?
05-20-2010, 01:19 PM
they aren't going to be cheap, but when you figure the dalton weights are $170 for three of them, if they keep the price around $70 per weight, they'll be well worth it. their adjustment will be superior to the dalton weights. they will have more than one adjustment point, lol.

"Bankrupt"
05-20-2010, 03:27 PM
Kinda sounds like the old Heelclicker setup.

got wake?
05-20-2010, 03:30 PM
i run heel clickers in my comet primary. i'd love to see something like the STM weights:

http://supremetoolinc.com/cart/supertip-x-series-cam-arms-for-arctic-cat-and-polaris-p-76.html