600 cfi with Bikeman Pipe mod

[kjs123157]

I spent the week-end out on the lake and tried many, many different clutching combinations and this is what I ended up with. I have the Bikeman pipe mod and their muffler. Temp was @22 degrees F. The lake had about a 1/4 mile of hard packed snow followed by a 1/4 mile of intermittent snow and ice followed by another 1/4 mile of hard packed snow. All top speeds occurred in the center section. I did all runs from about a 25 mph roll to avoid track spin. Stock gearing.

Primary: MTX weights built up to 68g. Team Black/Green spring
Secondary: Team 70-44-46 helix. Team Red/Black spring.

Max speed: consistently 108-109 (saw 110 once). 102-104 aginst wind.
Max Rpm: 8250. Gets there quickly and holds.
Both above are max recall on gage.

Great backshift. 4650 rpm engagement.

Thanks to all that answered my clutching questions here at HCS.

[dheard4992]

what does it mean to build weights up to 68g? Sorry if thats a dumb question.

[kjs123157]

what does it mean to build weights up to 68g? Sorry if thats a dumb question.[/b]

They kit that I have the weights starts at 50g. The kit comes with a series of different size inserts that you can screw in to add more weight either to the heel, the middle, or the tip.

[Snobooger]

where did you add the weight? how are you jetted?

[kjs123157]

where did you add the weight? how are you jetted?[/b]

14 grams at the heel, 4 grams in the middle. My sled is a CFI-no carbs, no jets.

[PolarisNut]

You said MTX weights in your first post, but I take it you're running Bikeman's adjustable weights?

[Spiderman]

So what you're saying i the pipe mod and some clutching is well worth it?
I'm strongly considering this pipe mod, and wanted to hear some feed back on it before I just went for it.
Anybody else, CFI only have this mod?

[kjs123157]

You said MTX weights in your first post, but I take it you're running Bikeman's adjustable weights?[/b]

Oops. My bad. They are STM weights (SuperTip) and yes, I did buy them from Bikeman.

[iowa-rider]

I just wanted to verify, you had to run 1/2 mile WOT to get those speeds? Trying to figure out if the mods are worth doing to my 600 CFI. I've been 102 on radar, packed snow, in less distance just stock...only 250 miles on it.
T

[kjs123157]

I just wanted to verify, you had to run 1/2 mile WOT to get those speeds? Trying to figure out if the mods are worth doing to my 600 CFI. I've been 102 on radar, packed snow, in less distance just stock...only 250 miles on it.
T[/b]

Not exactly. I'm guessing at the distances and I didn't just put it right to the bar. I started at a 25 mph roll and eased into the throttle to avoid track spin since I was using the max recall for my readings. Under those circumstances, somewhere between 1/4 mile and 1/2 mile is where I hit my top speeds.