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Old 10-11-2004, 12:48 PM   #751
PASSMORE
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Location: The Texas Embassy in Sloughhouse, CA
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Quote:
Originally Posted by meat popsicle
elevational changes. Any experience or sense of this stuff yet?
Meat - I ride regularly in Sacramento (basically sea level - 25 feet above) and in/around Lake Tahoe (6000+/- min.) and I do not feel an appreciable degradation in performance. I have the FCR41.

Please keep in mind that I may be too dumb to tell... Your mileage may vary.

;)

M
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Old 10-11-2004, 01:14 PM   #752
meat popsicle
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Quote:
Originally Posted by PASSMORE
Meat - I ride regularly in Sacramento (basically sea level - 25 feet above) and in/around Lake Tahoe (6000+/- min.) and I do not feel an appreciable degradation in performance. I have the FCR41.

Please keep in mind that I may be too dumb to tell... Your mileage may vary.

;)

M
Thanks Passmore,

I wonder if they meant something more, like 8,000+? I know that's when humans start to get altitude sickness; dunno about carbs.

On a trip long ago over the Bighorn Mountains in Wyoming, my somewhat neglected 78 KZ1000Z1R just shut itself off when I came off the gas to pull over but started up again and kept going as long as i stayed on it. That was at 10K. I didnt really notice too much loss of performance, but I was gawking at the scenery so I probably wouldn't have noticed much.
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Old 10-11-2004, 01:41 PM   #753
PASSMORE
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I do not know either - elevation wise... While most of the time is around 6000, I believe the passes are approaching 8k and I am undure of what the elevation is around Kingsbury Grade (anyone?). So to further clarify, I would say that at 8k and below I do not notice anything significant powerwise.


M


Quote:
Originally Posted by meat popsicle
Thanks Passmore,

I wonder if they meant something more, like 8,000+? I know that's when humans start to get altitude sickness; dunno about carbs.

On a trip long ago over the Bighorn Mountains in Wyoming, my somewhat neglected 78 KZ1000Z1R just shut itself off when I came off the gas to pull over but started up again and kept going as long as i stayed on it. That was at 10K. I didnt really notice too much loss of performance, but I was gawking at the scenery so I probably wouldn't have noticed much.
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Old 10-11-2004, 02:13 PM   #754
Renazco
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Quote:
Originally Posted by meat popsicle
Thanks for the info Mr. Boejangles!

BTW, your HP numbers... I thought the stock bike was supposed to put out ~44hp. I would search for this but with KTM LC4 and 640 all not workin with Baldy's new and redone search engine, I can't.
Someone correct me if I'm wrong on this one but I believe you add 15 hp on top of dyno results.
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Old 10-11-2004, 02:23 PM   #755
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Yeah, we were talking about that Friday - I have heard likewise (at the "crank" vs. to the wheel). I think Vrago said 13?


M


Quote:
Originally Posted by boejangles
Someone correct me if I'm wrong on this one but I believe you add 15 hp on top of dyno results.
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Old 10-11-2004, 02:28 PM   #756
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Quote:
Originally Posted by boejangles
Someone correct me if I'm wrong on this one but I believe you add 15 hp on top of dyno results.
OK, your wrong. (you did ask)

A modern Dyno will take readings from the rear wheel and the computer software and sensor systems will correct it for variables. The final number(s) are HP/TQ... at the rear wheel.

I think Factory uses an Eddy Current Dyno; it is my understanding, as I have never used one side by each with a Dynojet, that their numbers are a bit lower on average than a Dynojet dyno. Not that it matters, as a dyno is more valuable as tuning tool rather than a comparing different bikes, locations, times, etc etc.... tool.

You can add a percentage, based on average drive line frictional and heat losses to obtain a "crank" HP/TQ value. Depending on who you talk to, a chain drive will be a 15% to 25% loss from crank to rear wheel.

So, lots of variables and apples and oranges and......
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Old 10-11-2004, 03:02 PM   #757
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So what does that seat-of-the-pants dyno say, anyway? How noticable is the difference (granted, the airbox and exhaust are changed too).
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Old 10-11-2004, 03:13 PM   #758
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So I guess the factory numbers were on the crank and yours were on the rear wheel... and creeper forgot to see the silver lining in that cloud he just floated (this is IF i understand creeper's tech talk): you are sittin on a bike that might be making 10+ HP over stock. Purdy dang good Mr. Boejangles!
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Old 10-11-2004, 03:56 PM   #759
ChrisC
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Musical Dyno....

Quote:
Originally Posted by creeper
OK, your wrong. (you did ask)

A modern Dyno will take readings from the rear wheel and the computer software and sensor systems will correct it for variables. The final number(s) are HP/TQ... at the rear wheel.

I think Factory uses an Eddy Current Dyno; it is my understanding, as I have never used one side by each with a Dynojet, that their numbers are a bit lower on average than a Dynojet dyno. Not that it matters, as a dyno is more valuable as tuning tool rather than a comparing different bikes, locations, times, etc etc.... tool.

You can add a percentage, based on average drive line frictional and heat losses to obtain a "crank" HP/TQ value. Depending on who you talk to, a chain drive will be a 15% to 25% loss from crank to rear wheel.

So, lots of variables and apples and oranges and......


I recommend the "Duane Eddy Current Dyno" to all my friends....

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Old 10-13-2004, 02:31 PM   #760
seb416
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Eek Fork Springs

Has anyone replace the standard 4.4 springs with stiffer ones, or cut the 4.4 to get em harder???
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Old 10-13-2004, 03:05 PM   #761
Happe
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Quote:
Originally Posted by seb416
Has anyone replace the standard 4.4 springs with stiffer ones, or cut the 4.4 to get em harder???
My Rally Replica has 4.8 springs.
If you cut a spring it will be shorter not harder

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Old 10-13-2004, 03:37 PM   #762
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Pic from my ride today:

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Old 10-13-2004, 10:15 PM   #763
BlitzBike
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Springs

I thought stock 48mm Adventure springs were .46???
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Old 10-14-2004, 01:51 AM   #764
Happe
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Quote:
Originally Posted by Swampy
I thought stock 48mm Adventure springs were .46???
I think we are talking about the WP Extreme USU Forks
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Old 10-14-2004, 03:40 AM   #765
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Quote:
Originally Posted by Happe
I think we are talking about the WP Extreme USU Forks
Happe has the WP 50mm USU forks. I believe Seb416 has a 2004 Adv with 48mm USD forks. Still, the advice against cutting is good, whether an apple or an orange Who knows a good source for .46 or .48 springs for the 50mm forks?
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