Clutch engagemant

794 Views 9 Replies 4 Participants Last post by REDWEDGE600, Oct 11, 2005

REDWEDGE600

Discussion Starter · Oct 9, 2005

I am bored and waiting for snow, so I am arm chair tuning my sled.

I was thinking of putting the stock Blue spring back in which is 120/285 if I recall, I am running 60g HSP weights, 36s and yellow EPI sec. with a red EPI front 150/300.

I am thinking the lower engagement would give less track spin, correct? One other note last winter I noticed that my belt was not going to the top of the primary with a 300# spring about 1/2" down, I am assuming switching to 285# would help this? I also have a HSP white I might try.

:dunno: :dunno:

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racerdave

· #2 · Oct 9, 2005

HSP white is pretty much same rates as Poo blue, your probably engaging around 4500-4600 rpm now? I wouldn't go much lower than 4200, it may bog with that longer track. just my .02

also did your clutch have to be reshimmed to run the HSP weights? they are notched aren't they?

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REDWEDGE600

Discussion Starter · #3 · Oct 9, 2005

Originally posted by racerdave@Oct 9 2005, 06:25 AM
HSP white is pretty much same rates as Poo blue, your probably engaging around 4500-4600 rpm now? I wouldn't go much lower than 4200, it may bog with that longer track. just my .02

also did your clutch have to be reshimmed to run the HSP weights? they are notched aren't they?
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They are notched, when you are talking reshimed, yes I did reshim the spider for better belt clearence.

Yep it is around 4500, I here yah on the bog, trial and error.

Do you think by going to a lighter poundage on the top end I will shift out further?
150/300 vs 140/285, I suppose I could loosen the secondary but I would suspect I will loose some backshift?

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racerdave

· #4 · Oct 9, 2005

remember you want 8,000 on your 600. if your there now, you'll lose rpm. 1/2 inch from the top isn't bad. 1/4 is great.

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REDWEDGE600

Discussion Starter · #5 · Oct 9, 2005

Originally posted by racerdave@Oct 9 2005, 07:38 AM
remember you want 8,000 on your 600. if your there now, you'll lose rpm. 1/2 inch from the top isn't bad. 1/4 is great.
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:div20:

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pockets

· #6 · Oct 9, 2005

With 4500 engagement and your track traction should not be a problem. Lowering the engagement with the stock 120 lb spring will lose some low end. Softer shift out is why with the 600 I would use the almond/gold, or hot seat white. If oyu have the yellow epi secondary, I do not think that is enough torsional pressure for the twin. You want the silver/blue pol, hot seat orange, or epi purple, or orange (not HD). Not enough pressure at top end shift can limit the shift out just as much as too much pressure can. It is a balancing act.

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REDWEDGE600

Discussion Starter · #7 · Oct 10, 2005

Originally posted by pockets@Oct 9 2005, 04:59 PM
With 4500 engagement and your track traction should not be a problem. Lowering the engagement with the stock 120 lb spring will lose some low end. Softer shift out is why with the 600 I would use the almond/gold, or hot seat white. If oyu have the yellow epi secondary, I do not think that is enough torsional pressure for the twin. You want the silver/blue pol, hot seat orange, or epi purple, or orange (not HD). Not enough pressure at top end shift can limit the shift out just as much as too much pressure can. It is a balancing act.
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Again thanks, I am going to take your advice, I have been running a 36S HSP helix and HSP "D" /60 g weights, I should be able to use these parts?

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racerdave

· #8 · Oct 10, 2005

kirt, pm'd ya

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ivar

· #9 · Oct 10, 2005

Originally posted by REDWEDGE600@Oct 9 2005, 05:46 AM
I was thinking of putting the stock Blue spring back in which is 120/285 if I recall
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The polaris blue is 120-300.

I'd think to get more shiftout you'll need to gear down some more, what is your current gearing?

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REDWEDGE600

Discussion Starter · #10 · Oct 11, 2005

Originally posted by ivar@Oct 10 2005, 03:21 PM
The polaris blue is 120-300.

I'd think to get more shiftout you'll need to gear down some more, what is your current gearing?
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22/41 stock is 22/40

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