GTS OWNERS CLUB

MikeHolland · Posted: Tue Jul 31, 2007 10:34 pm Post subject:

Mixing weights does NOT give you the best of both worlds. It just gives you a compromise. If you mix 10 gram rollers with 14 gram, the result is exactly the same as fitting 12 gram rollers.

The only point in mixing is to get an in-between value that is not available on its own, eg. 13 grams. But who needs to fine-tune their rollers to that extent?

Mike
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smirnoff · Posted: Wed Aug 01, 2007 1:08 pm Post subject:

When I had the polini variator it came with 11gram rollers, they are too light and the scoot just screams around at top revs. I phoned PM asking about 14gr POLINI rollers (the same weight as i had in the Malossi variator previously), they informed me polini do either 14.7 or 13.2 but you can mix them to get an average of nearly 14 they said, so thats what I did.I have found now that the lighter rollers wear before the heavier. What they didnt say was that any 20x17 roller will do (of course ), so you can use Malossi, PM, Dr Pulley and so on. My advice would be between 12.5 and 14 dependant on things like load size, usual driving conitions and how much you wanna thrash it.
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PHIL....

180trev · Inspector Joined: 03 Jun 2007 Posts: 158 Location: lincoln

I have mixed rollers on my 70cc kitted NRG without any worries also on my kitted MBD tuned 185cc runner this is with a malossi delta clutch & a malossi variator.
My friend use mixed weights on his scoot to do the endurance racing up to six hours in the moped mayhem series and he agrres with me regarding the mixing of weights.

So this shite about one wearing quicker than the other does not hold a good argument as you change them frequently on your service scedhule.

dougl65 · Posted: Wed Aug 01, 2007 6:12 pm Post subject:

I have ordered the Polini variator and 13.5g PMTuning weights. I am not going to install them until after the first service which should be in about three weeks! I have also ordered a clutch and variator holding tools.

180trev · Inspector Joined: 03 Jun 2007 Posts: 158 Location: lincoln

best way of getting the nuts off is a impact gun. worth there weight in gold makes the job easy. no need for tool which is fiddly I find.

dougl65 · Posted: Wed Aug 01, 2007 9:50 pm Post subject:

Yes but you have to torque them up properly afterwards!!! Confused

Innocenti · Posted: Thu Aug 02, 2007 8:46 am Post subject:

good question Wink

im not to sure but i have just done 2500 miles on my mixed weight set up and i have just lost a bit of top end and hitting the old rev limiter again, not going to have the time at the moment but will be intrested to see if the lighter weights have worn more Confused

think i will try the dr pulley ones next Wink

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smirnoff · Posted: Thu Aug 02, 2007 1:08 pm Post subject: Re: mixing rollers

180trev · Inspector Joined: 03 Jun 2007 Posts: 158 Location: lincoln

well obe one knobee i still say it does not matter,,,,when riding could you tell they were flat...
answer no a f.. chance

so you will buy cheap light rollers

180trev · Inspector Joined: 03 Jun 2007 Posts: 158 Location: lincoln

well i have 14grs in my malossi variator & I will be changing them to 15grs
at the mo very quick up to 75mph then creeps over a few hundred yards to 80 mph but will not make much more, hence

speed verses take off

so I am putting the 15grs in which will improve top end by how much not sure

but will keep you informed

then I may have to put three of each in

but we will see

nutty boy · Sargeant Joined: 16 May 2007 Posts: 66 Location: cardiff

I have just ordered a polleni variator of Russ if it comes with 11grm rollers can i fit genuine piaggio with the polleni variator or do i have have to have polleni rollers or can i use any others

nutty boy · Sargeant Joined: 16 May 2007 Posts: 66 Location: cardiff

Hi did anyone get a spring included in there polleni variator pack and will i have to replace the original one as the mallosi kit has one included?

Innocenti · Posted: Thu Aug 02, 2007 5:20 pm Post subject:

no spring in kit, i think my rollers will look the same as them as i have just noticed change in bike bet there squared off, as its all experimental at this stage and would be good to see other peoples go's and results with there weights and etc i think i will try the Dr pulley ones and give them a go, then i might try one of them J Costa variators !!!! Wink

its all fun and games
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scar · troop Joined: 12 Jul 2007 Posts: 42 Location: manchester

Maver · Posted: Thu Aug 02, 2007 5:53 pm Post subject:

it's up to the individual if you torque them up or not......

i'm a big fan of the torque wrench, just for a bit of piece of mind for myself.....

if i done someone elses scooter i'd torque fixings up on that too.....

others are quite happy not to bother with the torque wrench and may never have a problem....

who's to say the torque wrench used is calibrated correctly (they do go out) i KNOW mine is right, i take it to work and calibrate it there Cool

i have seen nuts overtightened with an air gun.....not nice.....one case needed a new crank Embarassed

the guy "forgot to check the setting" apparently.....

pro's and cons for both, the choice is yours, just make sure whatever you do, do it right Cool

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