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  #1 (permalink)  
Old 07-25-2012, 03:06 PM
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Bike Year, Make, Engine: 93"shovel fxr.+1947 hardtail
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4 speed hardtail

hi just a quick one for you i am building a 96" evo hardtail with a 4 speed box the engine is fitted with std heads (gas flowed) highlift cam 10-1 comp spike electronic ingnition super g carb (twin plugged) do you reckon this will start easy enough on a kick start the reason i am asking is i am useing a hardtail frame with all the castings and i dont really want to put a electric start on it as i think it looks out of place

thanks for your help
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Old 07-25-2012, 04:16 PM
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You can do it. Kickstarting can be tricky. Your choice of cam and carb have a big impact. I've never been much of a fan of the super g. Also w/ 10:1 compression you'll have an easier time if you are a big fella.

-Craig
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Old 07-25-2012, 07:34 PM
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Just make sure that your ignition system will fire at kicking RPM's, I have a simple Dyna S ignition in my Shovel and it starts, first kick, every time. How hard it is to kick will depend on the overlap of your cam which will increase/decrease cylinder pressure.
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Old 07-25-2012, 08:05 PM
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I agree with CA, make sure your iggy is kick friendly. I've got a 3 dead rev module and good lord is it a wretch to start cold.
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Old 07-26-2012, 07:03 AM
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He said he has the Spyke ignition. If it's a modern spyke ignition, it's made by PowerArc. All the PowerArc ignitions are kickstart friendly. They'll fire on the compression stroke at any crank speed. I've been the PowerArc ignition for 8 years. It's real easy to kickstart.

-Craig
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Old 07-27-2012, 11:52 AM
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i had the spike in a shovel worked great on the kick, timeing it should be fun as its twin plugged i dont know if you stick to normal timing do as per shovelhead any ideas thanks
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Old 07-30-2012, 11:01 AM
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John,

I use the PowerArc ignition that is fully programable. PowerArc makes the ignition for Spyke and Spyke puts their lable on it. I have developed a advance curve for my ignition that is specific to dual plugged heads. Mine runs in a dual plugged Panhead. Basically for a dual plugged motor, you don't want to run as much advance. I believe that the standard ignition curve from PowerArc (and Spyke) will give you 37* (@ 4,000 RPM) of advance max. My modified my advance curve that so I get 31* (@ 4,000 RPM) of advance). This works really well on a Panhead with dual plugs.

If you have a programable ignition, I'm happy to share my advance cure file with you.

I have also run the PowerArc non-programmable ignition with my dual plugged Panhead. In that case I just retard the ignition just a bit so the total advance is not the full 37*. You can't use that much advance efficiently with dual plugged heads.

-Craig

Here is the advance curve I run on my Panhead:


Here is the stock advance curve in your Spyke ignition:
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