PowerCommnader V, auto tune and Malossi Multivar MHR 2000 variator

Ron Brennet

New member
You're right, 24g is way too low.

I have 28g Dr. Pulley sliders/pieces in my C600, with about 5k miles on them. I've found they help with acceleration off the line, but don't really do much to the higher end of the RPM band (it didn't need any help when it was stock). Mileage took a small hit, but I've got to imagine in your case, mileage would improve with the move from 24g to 28g.

Good luck.
Hi thanks much ☺ for the advice
 

Ron Brennet

New member
You're right, 24g is way too low.

I have 28g Dr. Pulley sliders/pieces in my C600, with about 5k miles on them. I've found they help with acceleration off the line, but don't really do much to the higher end of the RPM band (it didn't need any help when it was stock). Mileage took a small hit, but I've got to imagine in your case, mileage would improve with the move from 24g to 28g.

Good luck.
 

Ron Brennet

New member
Forgot to ask but you must have gone back to bmw original variertor to make the changes correct ?
By the way Malossi recommended 33 gr original weights on bikes above 2013 .I did that and it's very lazy from 60mph to 80 mph ...passing now nightmare. I will do original bmw variertor and 28 gr pulley sliders
 
Forgot to ask but you must have gone back to bmw original variertor to make the changes correct ?
By the way Malossi recommended 33 gr original weights on bikes above 2013 .I did that and it's very lazy from 60mph to 80 mph ...passing now nightmare. I will do original bmw variertor and 28 gr pulley sliders

I never had a Malossi variator. I've used stock. While the unique shape of a variator will effect how it pulls, the physics for rollers/sliders remain constant. Lighter ones will improve pickup/retard top speed, while heavier ones are slower off the line, but have better top speed/fuel efficiency.

You're likely right that you'd have to switch back to the BMW variator to use Dr. Pulley, but I can't speak to that, as I don't have direct experience.
 

Ron Brennet

New member
I never had a Malossi variator. I've used stock. While the unique shape of a variator will effect how it pulls, the physics for rollers/sliders remain constant. Lighter ones will improve pickup/retard top speed, while heavier ones are slower off the line, but have better top speed/fuel efficiency.

You're likely right that you'd have to switch back to the BMW variator to use Dr. Pulley, but I can't speak to that, as I don't have direct experience.
Thanks again for prompt answers
I will report to forum when all done and tested
 

Ron Brennet

New member
Wanted to contribute my experience so far to maybe help others confronting the problem .Here is the synopsis. Went with Malossi variartor and 24g
Bike was reving high top spee 100 mph and would cut off due to rev limiter ?...Discovered that Malossi recommended after 2013 models to go with 33 g bmw original rollers .So I did that ...pretty bad sluggish response specially around 50 to 80 mph discouraged passing. Wanted to go Malossi with Dr pulley 28 .Read that they don't play well together .Today put back BMW variertor with Dr Pulley 28g
Acceleration 0to 60 strong ..passing power back on .no crazy rpms bike feels good and happy.My advice
Just put Dr Pulley weight in and csll it a day
Mike at [email protected] ...big shout out
Helped with advice and Dr Pulley weights.
Long summary ..lol
 
Thanks, Ron
I quickly wrote Mike and he wrote back. I think his response worth showing here.

"
Generally speaking, the lighter the weights, the more RPMs required to overcome the spring tension in the main spring behind your clutch.

The combination of the springs and weights work together to regulate how quickly the RPMs spool up, and how fast it transitions from the low gear ratio to high (closed to fully open). Changing to lighter weights vs stock tunes the engine to have a faster rev up of RPMs at lower speeds, which gets you into the motor’s high torque range (for more power) at a lower speed than before. Lighter weights can raise the top speed RPMs outside of the engine’s optimal torque range and result in less overall engine power at higher speeds.

Heavier than stock weights will have a more subdued low end, but more responsive mid/high speed range. This is because the lower RPMs required to overcome the clutch main spring tension keep the engine in the high torque RPM band at higher velocities. However, they can be more sluggish during initial acceleration and hill climbing than stock (or lighter) weights.

In both examples, the farther up or down from the stock weights, the more exacerbated the results. Dr Pulley recommends going 10-15% lighter for most applications (most people are looking for a more spry low end for in-town driving and general peppiness), In your case, I would recommend getting the 32g weights. They should perform similar to (if not slightly better) on your low end power, and improve that midrange. You’ll likely have slightly lower overall RPMs, which would help with the fuel economy as well. 30g would also work, and give a bit more to the low speed power, too.

You can find the weights on our site here:
https://www.buggypartsnw.com/index.php/dr-pulley-slider-weight-30x20-for-bmw-c600-c650gt.html

Regards,

Michael Baird
Owner - Buggy Parts NW
503-860-7250
[email protected]


*****
Stock roller weights are 33g if I have it right.
I guess that the Dr. Pulley slider weights engage earlier than roller weights of the same mass and lock up earlier.

I found this to be good info.
Thanks Ron
 
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