weights

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01polcat

New member

Nov 28, 2010

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• Apr 20, 2011

• #1

i got 900 king cat that im trying to figure out what weights to run in it. i have it geared at 20 top 43 bottom with a red and white spring with a 49 degree helix i had 65 lighting weights in it but my primary came apart and trashed my weights so im wondering if i should get the same ones or is there something better i could run?

 

M

maddogwfo

Member

Dec 4, 2007

248

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18

Otis Ochards WA

• Apr 21, 2011

• #2

I am running same gear ration on my Kingcat as you but running a straight 53 helix, stock weight 68/69 and stock titaniun spring, running 7700 RPM with SLP single pipe, mod airbox and Boyseen Reeds, pulls like a freight train, elevation 3000 to 7000 foot MADDOGWFO SLP recomends 7700 RPM with there single pipe and with the 53 helix it does not fall off unless heavy wet snow condtion

 

Last edited: Apr 21, 2011

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01polcat

New member

Nov 28, 2010

19

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• Apr 21, 2011

• #3

mine likes to run around 8100 but my tach could be off

 

M

maddogwfo

Member

Dec 4, 2007

248

24

18

Otis Ochards WA

• Apr 22, 2011

• #4

Seems High On RPM

That seems like alot of RPM for these big twins, my suggestion would be add some weight to it and a differant helix (53) and I bet you would be surprised on how hard it would pull, also contact PSI and ask then what king of RPM there pipe run's best, just my thoughts, good luck still snowing here in WA, yahoo MADDOGWFO

 

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01polcat

New member

Nov 28, 2010

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• Apr 22, 2011

• #5

psi said around 7900

 

C

clutch

Well-known member

Premium Member

Nov 26, 2007

838

200

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58

Big Horns Wyoming

• Apr 22, 2011

• #6

The PSI single on the 900 likes to turn about 7600-7700. Spinning it 8100 probably costs you 10 or more horsepower. Give it more helix, like a 53. Are you using a fixed pin clutch or the older 9 tower with bushed weights? If it is a bushed weight clutch about 66-67 gram weights, fixed pin will want 69-70.