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Author Topic: Engagement rpm  (Read 5307 times)

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Habbeli

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Engagement rpm
« on: March 12, 2014, 08:13:34 AM »
How should I do to get up engagement rpm to about 5,500 ?
I now have white spring and E-ramps which weighs 61.5 gr and the engagement rpm is no just at 4,200 - 4,300 rpm  >:(
I gotta get this shit to "explode" on the start line when I run drag racing  ::)
Advice is desired a.s.a.p.  :D
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kawhead

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Re: Engagement rpm
« Reply #1 on: March 12, 2014, 08:24:37 AM »
f ramps with white[long] spring.....j ramps used a pink spring[short]....may have to notch the f ramp like the j but not as far.....i have not set up for that high so thats were i would st :)art.
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gixxer6

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Re: Engagement rpm
« Reply #2 on: March 12, 2014, 02:18:36 PM »
Modify your E-ramps to Aaen spec.  Then tune with spring and washers.  I have played with E's, J's, F's and have had, by far, the best results with the modified E's.  At least for a drag setup.  For trail riding, stock clutching works best for me. 

The specs for modifying them are in the members area under Aaen Porting Specs. 
« Last Edit: March 12, 2014, 02:20:23 PM by gixxer6 »
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Habbeli

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Re: Engagement rpm
« Reply #3 on: March 12, 2014, 09:12:05 PM »
Quote from: gixxer6 on March 12, 2014, 02:18:36 PM
Modify your E-ramps to Aaen spec.  Then tune with spring and washers.  I have played with E's, J's, F's and have had, by far, the best results with the modified E's.  At least for a drag setup.  For trail riding, stock clutching works best for me. 

The specs for modifying them are in the members area under Aaen Porting Specs.

This applies to a Intruder so I can not let the engines rpm go up more than about 7,300 but I must surely try my way. gixxer6; What are your engagement rpm on your sled?
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gixxer6

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Re: Engagement rpm
« Reply #4 on: March 13, 2014, 07:19:25 AM »
With the modified E's on my 440 Invader, I tuned it for a 5,000 rpm engagement with a 8,000 max.  This gave me a good hole shot without excessive track spin.  I did have it engaging at 5,500 rpm, but it was too high.  So I changed the weights and spring until I got a good launch (5,000rpm).   
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Habbeli

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Re: Engagement rpm
« Reply #5 on: March 29, 2014, 04:18:47 PM »
Okay, I have now tried to lighten my e-weights and Chims the spring (white long)
I'm now up to 5.000 engagement-rpm, but now top revs up in 8.000 and so high I do not want it  :-\
It does not seem like that I get rpms to where I want, 5.500 engaging and 7.300-7.500 top rpm  :(
I might have to run with Comet or Polaris clutch so there are better adjustment possibilities  :-\
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kawhead

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Re: Engagement rpm
« Reply #6 on: March 31, 2014, 08:31:51 AM »
why not 8000 rpm? use an invader pipe?
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Habbeli

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Re: Engagement rpm
« Reply #7 on: March 31, 2014, 06:53:50 PM »
Quote from: kawhead on March 31, 2014, 08:31:51 AM
why not 8000 rpm? use an invader pipe?
Max power is around 7,200 on the Intruder engine.
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kawhead

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Re: Engagement rpm
« Reply #8 on: April 01, 2014, 08:12:03 AM »
7200 with an intruder pipe...   i'd still try an invader pipe, and see if it will pull more clutch weight.....porting not allowed i assume?
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kawhead

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Re: Engagement rpm
« Reply #9 on: April 01, 2014, 08:15:41 AM »
i've always had better performance when the sled is set up to run a higher rpm than std....
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Habbeli

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Re: Engagement rpm
« Reply #10 on: April 04, 2014, 04:56:22 PM »
Quote from: kawhead on April 01, 2014, 08:12:03 AM
7200 with an intruder pipe...   i'd still try an invader pipe, and see if it will pull more clutch weight.....porting not allowed i assume?

No, It shall go in standard class  :D
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kawhead

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Re: Engagement rpm
« Reply #11 on: April 05, 2014, 08:22:51 AM »
i'd still try an invader pipe....if allowed  ::)  stock carbs required also?
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Habbeli

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Re: Engagement rpm
« Reply #12 on: April 05, 2014, 08:52:20 AM »
No, free update of the carbs it is, I run with 34 Mikuni flat slide  :P
If I get hold of an Invader pipe should I try it, it is not easy to find parts here in Sweden  :-\
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kawhead

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Re: Engagement rpm
« Reply #13 on: April 05, 2014, 07:52:15 PM »
i bet it is hard to find parts there...no reason better exaust can't help
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