Dr Pulley 20x12 14GR

[Adept]

We'll know better when you give me a mailing address to ship to. Those are the correct size 20x12 15gr.

modmaster

You got a PM..

[Adept]

I keep the topic alive...

So, from modmaster (Thanks a lot!!!) I got a 15gr Dr. Pulley rollers instead of 14gr.

I think this is my best solution for the problem.

The engine is much more calmer, don't have to keep high rpm to gain power. In the city, around 40-60km/h, it keeps the 4500-5000rmp, so you can cruise easily. But if you need power, the max rmp still a little above 7000rpm.
I think I am satisfied.

But the little devil inside me is very curious, what would happen if I order a 16gr. roller... It would be heavier than the factory rollers (15,4gr vs. 16gr), but the shape is different... I think the shape causes the max rpm increasing, and the weight causes the different engine behaving.

So If somebody have a spare 16gr roller, just send it to me... :D

[agilebda]

Hello guys. Just want to share some experience with my Dr. Pullley Sliders and rollers. First I used the 14 gram in my GTI 300. I found that they were too light. Next I tried the 15 gram and this seemeed to be the perfect combo. The 14's had too much RPM amd took a while to get to top speed with excessive RPM. The 15's seemed to be the best so far with no excessive rpm. I put a malossi tension spring in the rear and this helped a heck of alot on take off. Front wheel lifted when I smashed the twist from a complete stop. Raw power on take off.

[Adept]

Hello guys. Just want to share some experience with my Dr. Pullley Sliders and rollers. First I used the 14 gram in my GTI 300. I found that they were too light. Next I tried the 15 gram and this seemeed to be the perfect combo. The 14's had too much RPM amd took a while to get to top speed with excessive RPM. The 15's seemed to be the best so far with no excessive rpm. I put a malossi tension spring in the rear and this helped a heck of alot on take off. Front wheel lifted when I smashed the twist from a complete stop. Raw power on take off.

What would you think about a 16gr  Pulley roller? Worth to try?

[feebleknievel]

well when i get my 300i in the next few weeks to go along with my 500abs ri the 1st thing im going to do with the 300 is change the weights Dr. Pulley Slider Weight 20x12 for 250/300cc - 8 pack - 15g
Price: $44.95 best place to buy is Buggy  parts NW been buying there for several years https://www.buggypartsnw.com/

[Adept]

Okay...

I got my 16 gr sliders. It is a bit heavy for this bike.
The 14gr for the LEA7 variator is a mistake, too light.

The final solution for me is mixing the 15 and 16gr rollers. Now it is perfect for me (for the LEA7 version!!).  The bike is calm, but stays agile, the cruising rev stays as low as possible, and the hiend rev is 7500.  The perfect combination.

I am a happy man now.

[kfc.android]

Okay...

I got my 16 gr sliders. It is a bit heavy for this bike.
The 14gr for the LEA7 variator is a mistake, too light.

The final solution for me is mixing the 15 and 16gr rollers. Now it is perfect for me (for the LEA7 version!!).  The bike is calm, but stays agile, the cruising rev stays as low as possible, and the hiend rev is 7500.  The perfect combination.

I am a happy man now.

Finally I finished reading this long thread, very helpful information for whoever wants to play with sliders.

I have read lots of posts on both Taiwan and US DT owner's group. Seems like Dr. P. 15g slider would be better in terms of lower rev for all speed range (compare to 14g).
I ride my DT on interstate daily for about 1 hour round trip, and I tend to maintain my speed between 70 to 85mph. With all stock setting, I can reach 70mph@6000rpm, 80mph@7000rpm, tops around 92mph@8000-ish rpm.

So, based on previous conclusion, I should probably go with 15g slider, but wait!!
Now I saw someone's selling 15.5g slider (on Taiwanese eBay sort of site) and guess what?
I got a friend coming to the states from TW soon, so I can ask him to bring in the 15.5g sliders...

Adept, could you share more about the difference between all 15g and 15+16g setting?
If I do two up riding, which side should I go for? Heavier or lighter sliders?
Any comment will be greatly appreciated

P.S: My DT was made in Jan, 2013. With LEA7 clutch assembly (the rear part, you know), but my dealer replaced it with the LGE5 version around 4k miles. I believe my variater is LEA7 version.

Ride safe,
J
 

[zombie]

You fellas should NEVER mix roller/slider weights. That causes the heavier weights to do all the work, and the light ones just float around. It causes premature wear to everything in the variator.

The only time it is acceptable to mix weights is short test drives to dial in the correct weight.
In this case 15.5. I would never ride more than a mile w/ mixed weights.

There are several posts here, and other sites that back this up.

[kfc.android]

You fellas should NEVER mix roller/slider weights. That causes the heavier weights to do all the work, and the light ones just float around. It causes premature wear to everything in the variator.

The only time it is acceptable to mix weights is short test drives to dial in the correct weight.
In this case 15.5. I would never ride more than a mile w/ mixed weights.

There are several posts here, and other sites that back this up.

Agreed, I just saw a thread on Taiwanese forum about the side/bad effect of mixing different weights. However, the 15.5g slider I mentioned are actually 16g version, they just grind out .5 grams to make it a 15.5g slider, maybe it's not a good idea because I don't know how they grind it (isn't it true that slider has special shape and weight distribution so we should not modify it in any way?)

[zombie]

Grinding or drilling out the cores is fine. Use a postage scale, and you will be fine.

As long as they all weigh the same.

[kfc.android]

Grinding or drilling out the cores is fine. Use a postage scale, and you will be fine.

As long as they all weigh the same.

Thanks Zombie,
Looks like the seller is edging those sliders to make it 15.5g, would that be okay?
I have attached the link to the item although all descriptions are in Mandarin lol
http://goods.ruten.com.tw/item/show?21303065168757

[zombie]

I order parts from all over the globe. Google Translate.   https://translate.google.com

15.5 sounds like the general consensus for your bike but only you will know if they are right for you. Lots of fellas here sell/swap their rollers if they do not suit your needs.

[kfc.android]

Thanks zombie, I'll go for the 15.5g first, will post my feedback after I ride on it. Happy 4th oh July.

[Adept]

Hi

Yes the 15,5gr is the best... I think Dr. Pulley is making special roller weights.  Try to order a 15,5gr roller from them...

16gr is make the engine to slow. Worse than the factory values.

[kfc.android]

Hi

Yes the 15,5gr is the best... I think Dr. Pulley is making special roller weights.  Try to order a 15,5gr roller from them...

16gr is make the engine to slow. Worse than the factory values.

@Adept
So nice to hear from you, since you are the one who tried many different settings.
Would you think 15.5g is still a good idea for two up riding? (Im 180lbs, and my speed limiter is 120lbs)
I already ordered the 15.5g but if 15g would be better then I will order both
Have a nice weekend.