Gotta be able to run my 1994 Interstate, 75-80, how? - Kawasaki KLR 650 Forum
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post #1 of 9 Old 07-30-2012, 10:15 PM Thread Starter
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Gotta be able to run my 1994 Interstate, 75-80, how?

I need interstate speeds confidence on my 1994 KLR. Set up 50/50 with 400 lb payload.

Had a big issue at 80, haven't been back. Made a lot of changes.

So how do I test my my modification success without risking a highside via tankslapper when/if she checks out on me again?
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post #2 of 9 Old 07-30-2012, 10:30 PM
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Quote:
Originally Posted by troutbum33 View Post
I need interstate speeds confidence on my 1994 KLR. Set up 50/50 with 400 lb payload.

Had a big issue at 80, haven't been back. Made a lot of changes.

So how do I test my my modification success without risking a highside via tankslapper when/if she checks out on me again?
Test Rider.
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post #3 of 9 Old 07-30-2012, 10:47 PM Thread Starter
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nothing to say

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Originally Posted by terry_1956 View Post
Test Rider.
Terry, let me clue you in on something I learned a long time ago. "Never pass up the opportunity to say nothing "

You're a perfect case study. Absolutely nothing of value to contribute, but you've just gotta pop and say something.

Good luck keeping her between the ditches.
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post #4 of 9 Old 07-30-2012, 11:11 PM
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Quote:
Originally Posted by troutbum33 View Post
Terry, let me clue you in on something I learned a long time ago. "Never pass up the opportunity to say nothing "

You're a perfect case study. Absolutely nothing of value to contribute, but you've just gotta pop and say something.

Good luck keeping her between the ditches.
I'm sorry if you took offense to my reply, many on this forum tend to be lighthearted and open to a jest once in awhile. Ride Safe and God Bless
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post #5 of 9 Old 07-31-2012, 12:02 AM
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Quote:
Originally Posted by troutbum33 View Post
Terry, let me clue you in on something I learned a long time ago. "Never pass up the opportunity to say nothing "

You're a perfect case study. Absolutely nothing of value to contribute, but you've just gotta pop and say something.

Good luck keeping her between the ditches.
"Never pass up the opportunity to say nothing"

Wise words. Wouldn't that apply to, you know, your post too?

Anyways, I think a fork brace could help. I've never gone 80 on my KLR nor have I ever experienced speed wobble, but the brace tightens the steering and I think that will minimize problems. A less flickable bike would be less prone to speed wobble, no? I donno, I'm mostly speculating.

IMO the fork brace is worth it for reasons unrelated to speed wobble.

Anyways, I think what terry said is literally the answer. I suppose you could work your way up to your operating parameters...progressively add speed. Rinse and repeat with more weight.

2006 Red KLR 650

Modifications:
1)Doohickey Planned and purchased 2)Aftermarket Grips 3)Grip Heaters 4)Happy Trails Hard Luggage Rack 5)20 mm ammo cases planned soon 6)Aftermarket Exhaust 7)Thermobob 8)Happy Trails Fork Brace 9)Stainless Steel Oil Filter 10)Magnetic Drain Plug

See profile visitors post for details and planned mods.
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post #6 of 9 Old 07-31-2012, 12:24 AM
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From an academic paper on the topic...

Quote:
Road testing was conducting by the same rider in different vehicle conditions. With a fixed speed,
the rider took the hands off the handlebar, so the steering system was free to rotate. The rider waited
for steering oscillations to appear and then stopped the handlebar when oscillation amplitude
approached an unstable state.
Feeling daring? Their test rider has more guts than me.


FWIW: the second part of this paper I found from wikipedia shows a laboratory based method to measure wobble. I certainly doubt that it is feasible for this application (undoubtedly cost prohibitive and you might not have any reference to make sense of the data you collect). It is late and I just skimmed through it, but it seems interesting nonetheless.

http://www.dinamoto.it/dinamoto/7_MD...e%20MODENA.pdf

2006 Red KLR 650

Modifications:
1)Doohickey Planned and purchased 2)Aftermarket Grips 3)Grip Heaters 4)Happy Trails Hard Luggage Rack 5)20 mm ammo cases planned soon 6)Aftermarket Exhaust 7)Thermobob 8)Happy Trails Fork Brace 9)Stainless Steel Oil Filter 10)Magnetic Drain Plug

See profile visitors post for details and planned mods.
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post #7 of 9 Old 07-31-2012, 07:46 AM
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Bumdude,
Check out the high speed wobble thread currently running in this same dept.

I run high speed most of my commute and the KLR has changed accordingly.
With no regard to offroadability the tires are now full street Dunlop 408's,
40 psi in the tires, and the fork tubes slid up the steering tree an inch.

The bike is very happy like this. The 16 tooth front sprocket is almost a
must for maintaining high speed vs rpms. The dirt gearing isn't all that
effective at 85 mph. lol

The test rider line was kinda funny btw. We poke each other in the ribs
here and there but kinship n' friendship is underneath it all the time.
We're here to help each other and have a smile along the way.

The only way to know is just go ride the thing, a coupla mph faster each
run until you feel that your scooter can remain stable at speed.

CheapStreetKLRDude.

This is my son, with whom I am well pleased." ----God
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post #8 of 9 Old 07-31-2012, 05:50 PM
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You might consider ditching the stock front fender. My son rides his on I-10 between Prescott and LA a lot without any reported steering problems. He has a fork brace and no fender. He told me he "pins the tach at 5500" that should work out to be 80+ with a 16 tooth sprocket.
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post #9 of 9 Old 08-01-2012, 11:02 AM Thread Starter
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Quote:
Originally Posted by terry_1956 View Post
I'm sorry if you took offense to my reply, many on this forum tend to be lighthearted and open to a jest once in awhile. Ride Safe and God Bless
No offense taken, I was just just taking the opportunity to pop off a little too.
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