Clutch Springs & Pulley Spring? Information please

[kev187]

I have the blue BattleScooter Clutch Springs, but what is the benefits of a Pulley Spring & should they be done at the same time?

I figure as long as I have the thing apart, why not replace both?

My ruckus has a Polini Variator, 5g weights, Kevlar Belt, Yosh TRC Exhaust + jets.

THanks so much in advance!!!!!!!!!!!!

[chanito]

OK this is kind of hard to explain so please bear with me, the clutch is a part of the transmission that allows power to get to the driving wheel and uses centrifugal force to push some shoes (like the ones in a brake drum system) against an external drum , those shoes are kept close by the springs, the hardest the spring the faster the shaft has to rotate to push the shoes outward against the drum, the idea is for the drum to start to rotate when the engine has the most torque so acceleration will be the best, some engine modification alter the engine speed at which the engine produces the most power (like camshaft and exhaust mods) so is a good idea to do so when you had modify the engine substantially, so you can take advantage of the extra torque, but a waste of time on a stock engine
The pulley spring is a spring the keeps the rear pulley close together and keep tension on the drive belt, which is a good idea as it makes the scooter answer to the throttle input much faster, the bad thing is that the extra resistance on the belt accelerate wear on the drive belt, but is wonderful on traffic

[kev187]

Thanks for the information

Yeah my Ruckus is only slightly modded. I have noticed since I put on the Yosh TRC Exhaust and changed the Jets. I have a bit more top end (evident by hitting the rev limiter more often on my normal commute to work)

But I seem to have lost some off the line grunt.

So I think I got it.

Changing the clutch Springs, will engage the rear wheel as the engine revs higher than before, this I understood.

The Pulley spring basically keeps the belt from spinning lose on the rear plate of the clutch as the engine is revving higher, does it hold help hold the engine in high gear longer?

Thanks so much, I already have the clutch springs from battle scooter (blue) I am going to look at Pulley springs now!

[scooterbill]

Kev. A weaker pulley spring will hold it in a higher gear longer but a stronger one will cause it to down shift faster (better for hills). Try adjusting your idle mixture screw (to gain back some of your off the line grunt), it is on the side of the carburator, the screw is "D" shaped.

[kev187]

Thanks for the response!

I ordered the yellow Mallosi Spring, I would like some balance, I can keep my ruck cruising over 40mph, but when I hit a hill she drops in speed very fast. So the milder yellow spring should be a bit more balanced, still hold for top speed, but I wont lose so much on the hills!

Thanks for the feedback, I am very excited to do the mods.

Just how hard is it to pull apart the clutch assembly? I have done the variator, belt, exhaust on my own already work on all my bikes & my truck routinely!

[scooterbill]

To pull the clutch apart is not that hard. I have taken it apart and put it back together myself. First take the nut off in the center. The clutch outter will slid off next. Then clutch should come right off. If you squeeze the clutch together, you will see a stopper ring on the splinned end. This is the where you need to be careful, that needs to come off. It is good to have someone help you. Have them squeeze the clutch together, then you take the stopper ring off. Once the stopper ring is off, the clutch might spring apart. If the clutch does not come apart, tap the center of the splinned shaft with a hammer while your helper holds it from flying apart, the helper may have to let it turn a little so it will come apart. When you put it back together you will have to line up the three slots with the three pieces that stick out. The helper squeezes it together while you put the stop ring back on. I hope I explained it well enough.

[kev187]

Thanks again

Does not sound too bad, I suppose you could hold it together with clamps to keep it from flying apart?

I am extremely anxious for the pulley spring to come in. I have the clutch springs on hand now. Should make my little bike even more fun than before indeed!

[scooterbill]

Kev. I have used clamps to hold it from flying apart. When you take the stop ring off it usually does not fly apart, but that does not mean your's won't, so becareful.

[kev187]

Aug 12, 2009 19:23:50 GMT -5 scooterbill said:

Kev. A weaker pulley spring will hold it in a higher gear longer but a stronger one will cause it to down shift faster (better for hills). Try adjusting your idle mixture screw (to gain back some of your off the line grunt), it is on the side of the carburator, the screw is "D" shaped.

Is there any good work around without having the honda tool for this odd screw? Which direction is more rich/lean? I get a little sputter when rolling on & off the throttle, could be the stock slow jet is lean when the new 78 main kicks in (some slow jets on order) or I need to get the mix sorted out?

Thanks again, I am anxious to try the new springs when they come in!

[scooterbill]

You can take it out and cut a slot in it. Use needle nose pliers to get it out. Try PMing Chanito, I think he has that "D" shaped screw driver bit for a few bucks. Counter clockwise is rich, clockwise is lean. If you are going to take it out, turn it clockwise all the way in and count how many turns it takes so you can return it to it's origional setting. Try adjusting the Idle mixture screw first, it might fix the bog.

[kev187]

thanks!

I am assuming once you pull it out, it goes back in on the way you took it out. I have a dremmel & can not a slot in it for a flat head screw driver. A project for tomorrow.

I figured the stock slow jet would be good for the 78 main, Ill try tuning it some 1st before I go back to swapping jets.

I am still waiting for my springs to show, have the clutch spring here, waiting for the pulley spring.

Thanks again!