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General Category >> Rubber Side Down! >> What is the real Red-line for this bike?
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Message started by geo on 12/16/06 at 22:53:33

Title: What is the real Red-line for this bike?
Post by geo on 12/16/06 at 22:53:33

According to the 2002 Owners Manual:
The recommended top speed of this engine is 6500rpm;
6500rpm in 1st gear = 35mph
2nd gear = 55mph
3rd gear = 75mph
4th gear = 90mph
6500rpm in 5th gear = 100mph.

Now, what is the real redline for this engine? ???

I try to keep it within the manual recommendations, but can I go further without blowing it up? ???

Title: Re: What is the real Red-line for this bike?
Post by klx650sm2002 on 12/17/06 at 00:27:28

The red line for KLX is 7500, at the same piston speed the savage is turning 6600rpm.

Clive W :D

Title: Re: What is the real Red-line for this bike?
Post by barry68v10 on 12/17/06 at 05:25:01

Clive,

Is that AVERAGE pistion speed, or PEAK piston speed? (Peak pistion speed is a better measure of when an engine will blow-up.) Do we know the length of the connecting rod in the Savage?

Barry

Title: Re: What is the real Red-line for this bike?
Post by barry68v10 on 12/17/06 at 05:27:33

Geo,

Based on Clive's response, I would not push the Savage beyond 6500. I don't think you gain anything by reving beyond that anyway. I'm sure by the time you hit redline, power is already dropping off.

Title: Re: What is the real Red-line for this bike?
Post by barry68v10 on 12/17/06 at 05:30:04

In general, for peak acceleration, you want to shift 10% beyond the HP peak, I'm guessing the Savage HP peak is around 5500 or so. Can anyone confirm or deny?

Title: Re: What is the real Red-line for this bike?
Post by Dynobob on 12/17/06 at 05:31:51

I wouldn't push it past 6500 either. The reciprocating mass of that big single piston is quite heavy.

Like barry68v10 said, you'll be out of power due to small ports and a mild cam long before that anyways. Short shift it. It'll probably accelerate just as quick and it'll last longer.

Title: Re: What is the real Red-line for this bike?
Post by Reelthing on 12/17/06 at 07:01:10

In watching the tach there's just not a reason to go over 6000rpm - the gears are close enough and the solid power band looks to be 3200-5800 - give or take a little

Title: Re: What is the real Red-line for this bike?
Post by thumperclone on 12/17/06 at 08:44:59

ive wondered if the cdi unit has a rev limiter..i found the limit on my thumperclone

Title: Re: What is the real Red-line for this bike?
Post by Brewbrother on 12/17/06 at 16:54:42

geo wrote:

What are you trying to achieve?? The redline on my CB was 11K. I never wanted to get close to it. I'm trying to stay away from the redline on this bike as well.

Title: Re: What is the real Red-line for this bike?
Post by georgekathe on 12/17/06 at 17:26:14

got to say I agree with Brewbrother. fine if you are wondering what it is out of curiousity, but if you want to know so you can try to scream up to it in any gear you are going to take a lot of life off your bike. it is after all a big single engine with lots of lovely torque & is not built to run @ high speeds.

my big trouble has always been the love & rush of acceleration over the speed a bike can deliver. really why I love the Savage in many ways - the way it winds up to a given (modest enough) road speed not through engine speed but through the "grunt" @ my command.

Title: Re: What is the real Red-line for this bike?
Post by Max_Morley on 12/17/06 at 17:43:07

Lasse's dyno chart has the HP/Torue falling almost straight down shortly after 6500. Maybe in the ignition part or lack of air flow. Max

Title: Re: What is the real Red-line for this bike?
Post by Brewbrother on 12/17/06 at 18:24:21

Max_Morley wrote:

Lasse's dyno chart has the HP/Torue falling almost straight down shortly after 6500. Maybe in the ignition part or lack of air flow. Max

I would think it was timing. The group has explored most other avenues of experimentation. Whats the drive to get higher RPM?? I rode a coworkers honda 900 sport bike. He said it was a CBR. Plenty of crazy speed. No longer my cup of tea.

Title: Re: What is the real Red-line for this bike?
Post by geo on 12/17/06 at 21:30:31

I heard in other threads of people revving this thing to 7500rpm. I wanted to make sure revving to this level was a bad idea. I'm sure now not to exceed 6500rpm. :D