Dr Pulley 20x12 14GR

[TANWare]

I don't know what you guys are worrying about. My S125 has 31000K on it almost all WOT and I changed to sliders to get more top end. It runs as good as the day I purchased it. My 300I is doing the same run at about 110Kmh 6 days a week. I am planning a 6000+ K trip next summer with it, 3200 in 4 days. I don't even think about how long the bike will last, it is built well.

I agree 110 KPH or 68.75 MPH feels good stock. My RPM's there were about 6,000-6,100 before but now would be about 5,800-5,900. I would have no issue before or after with that all day long. These bikes for "legal" speeds are perfectly capable.

The sliders have a main advantage under 50 MPH or 80 KPH. with the higher RPM's the bike is much more capable. Before I overloaded the bike 2 up with a total of 480 LBS. Nedless to say the engine had a great strain and you could hear and feel it. I think this load would now be greatly reduced.

On that note I think these are perfect for adding a top case, bigger windscreen and even a two up touring capability. I was contemplating swithing over to 15 gram but now that I think about it since there is no MPG hit the 14 gram is really the best choice for these motors and increasing the bikes capability.

As each mile passes I am becoming more used to the higher revs at low speed and it is feeling more natural. It is still hard to accelerate as I did before the change, there is just so much more available but nothing is free as they say.

I was thinking of another side benefit. That is the electrical charging system. Even the shop manual to test the charging system has you do this at 5,000 RPM's. So if you were to add on gloves and the like the system should be more capable. So this opens yet more options for us with the bike. Even though the total wattage can't be overlooked at low speeds we should not have to worry as much about battery discharge.

[scootinChris]

Thanks TANWare,

Very interesting observations.

As each mile passes I am becoming more used to the higher revs at low speed and it is feeling more natural. It is still hard to accelerate as I did before the change, there is just so much more available but nothing is free as they say.

I presume you refer to the "hard to accelerate" quote, because you want to keep the milage up, right?

Looking at Fuelly, your riding style seems to be already a bit more heavy handed, then most

[TANWare]

I am pretty easy on the bike, average US MPG is better than 70 so actually for the type of bike I am not doing bad at all. I am pretty light on the throttle normally but i've been playing lately. I refer to hard to accelerate at only a modest rate...............

[Goodrich]

I just ordered mine...cost a few more bucks but i'm real close to my 3K oil change.  I got a plug on the way too.

[TANWare]

good deal, you ordered the CR7EIX? I got two, alway good to have a spare. I am still not sure if I want to go to 15 or even 16 gram sliders. I love the performance but do prefer lower RPM's, just my style of riding even with a shifter.

It would be nice if there were a way to shift between the two weights with a flip of a switch................

[Goodrich]

good deal, you ordered the CR7EIX? I got two, alway good to have a spare. I am still not sure if I want to go to 15 or even 16 gram sliders. I love the performance but do prefer lower RPM's, just my style of riding even with a shifter.

It would be nice if there were a way to shift between the two weights with a flip of a switch................

Yeah, that's the one.  I just emailed the shop in town to give me an estimate on synthetic motor and rear end oil along with the installation of the spark plug and the rollers.  Just bought a beautiful M1A Socom 16 and then got hit with a $1500 repair bill for my car so money is kinda tight right now.

[TANWare]

My dealer doesn't carry Royal Purple so I purchased it and brought it in for them. 1.5 quarts for the change in the engine and I think it is like .25 quarts or so of the Heavier oil for the FD. I brought in 2 engine quarts and 1 quart of the FD. RP is just my choice, others may work just as well..................

[Cortez]

It would be nice if there were a way to shift between the two weights with a flip of a switch................

Burgman's Power mode FTW..

[Cortez]

good deal, you ordered the CR7EIX? I got two, alway good to have a spare. I am still not sure if I want to go to 15 or even 16 gram sliders. I love the performance but do prefer lower RPM's, just my style of riding even with a shifter.

16! That's be interesting to see!

I think I'd try 15.. and that'll probably be right for me.

[TANWare]

16! That's be interesting to see!

I think I'd try 15.. and that'll probably be right for me.

I am thinking of 15's as well but not too sure. The problem I had with choosing the 14 gram is there was so little info on these my only choice was to get them and try them out. All you hear about on the net is just 0-60 and maybe about some MPG effects but nothing else.

This is why I am posting all the impressions and thoughts I can so others can make a more informed decision and not just follow the crowd as I had too. I think I will wait for the air cleaner so as to not make too many changes at one time.

I know I can seem insufferable with all my postings sometimes but my intent is too pass on my experiences for our communities bennefit................

[Cortez]

I am thinking of 15's as well but not too sure. The problem I had with choosing the 14 gram is there was so little info on these my only choice was to get them and try them out. All you hear about on the net is just 0-60 and maybe about some MPG effects but nothing else.

This is why I am posting all the impressions and thoughts I can so others can make a more informed decision and not just follow the crowd as I had too. I think I will wait for the air cleaner so as to not make too many changes at one time.

I know I can seem insufferable with all my postings sometimes but my intent is too pass on my experiences for our communities bennefit................

Problem is, MOST people are only interested in the 0-60mph figures and not much more!
That's why everyone is posting only about that.

I'm thankful for all the info since I was wondering about the cruising rpms etc, since I figured
14g was too light, and now with your info it seems to be great.

However, if 15g sliders would also raise the RPMs up to 60mph I'd go for them since I'd want
revs as low as possible at higher speeds.

The scoot I tried accelerated at 5700rpms and was "OK" but nothing special, WOT at 6000rpms
was A LOT better, I guess between 6200 and 6300 would be enough for me, and that's
probably what would happen with 15g weights.

..and a few hundred less at 80mph for example.. purrrfect.
Someone better buy my kawasaki..

[TANWare]

I think you have it about right on with the 15 gram, even if 6,100 it would be great. At 60 now the RPM's ae about 5,400 or so with the sliders. just rememebr if you are heading up hill etc the 14 gram alows the RPM to get a bit higher than stock. 15 gram would put you more in line with the upward RPM range of the stock 15.5 gram rollers.

Personally I care about riding, if you are going to drag race the bike there are alot better options. Now ramp acceleration from 35-65 or 70 MPH onto a freeway interests me much more. The same goes from 45-60 for that need be umph on a local highway etc.............

[Cortez]

I think you have it about right on with the 15 gram, even if 6,100 it would be great. At 60 now the RPM's ae about 5,400 or so with the sliders. just rememebr if you are heading up hill etc the 14 gram alows the RPM to get a bit higher than stock. 15 gram would put you more in line with the upward RPM range of the stock 15.5 gram rollers.

Personally I care about riding, if you are going to drag race the bike there are alot better options. Now ramp acceleration from 35-65 or 70 MPH onto a freeway interests me much more. The same goes from 45-60 for that need be umph on a local highway etc.............

I wonder if the thing can be set up so that the revs are "normal" when cruising and 8000rpms at WOT
regardless of speed. Maybe with aftermarket clutch and variator..?

Got no experience with that.. but wonder if it's possible.
That's what I love about burgman 650's and aprilia mana's eCVT.

[axy]

However, if 15g sliders would also raise the RPMs up to 60mph I'd go for them since I'd want
revs as low as possible at higher speeds.

Well, this would go against existing laws of physics, because in order to go fast, you need power and the only way to develop power would be to increase revs, unless you have turbo charger or low revving 2-stroke diesel engine used in ships.

[Cortez]

Well, this would go against existing laws of physics, because in order to go fast, you need power and the only way to develop power would be to increase revs, unless you have turbo charger or low revving 2-stroke diesel engine used in ships.

As you've seen with the 14g rollers, they do exactly that.
Increase the revs at lower speeds for better acceleration, and keep the revs lower
at higher speeds.

I'm not saying it should do it's top speed at 5000revs as that's obviously impossible, but
the stock 15.5g setup will rev the bike up to around 8700 revs at 150km/h (the one I
tried) and it might be possible for the bike to maintain that same speed at 500 revs less,
since the power peeks around 8500rpms, and the power output at 8300 and 8700 is
probably the same, and THAT can be used to make the bike go faster OR rev slower
at the same top speed.