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Old 10-28-2013, 11:27 AM   #9241
wiseblood
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Ass

How do you guys do it? That damn OEM seat is HARD as hell!!

I managed to tear my Corbin, so I'm using the OEM seat until I can fit the custom.



Damn, if that stock seat isn't like sitting on a rock.
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Old 10-28-2013, 12:16 PM   #9242
BuckMoto
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Your new gas tank is too big. If you were running the stock SMR tank, you would run out of gas about the time your ass yells "uncle".
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Old 10-28-2013, 12:19 PM   #9243
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Originally Posted by BuckMoto View Post
Your new gas tank is too big. If you were running the stock SMR tank, you would run out of gas about the time your ass yells "uncle".
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Old 10-28-2013, 03:53 PM   #9244
snowhawk jockey
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Originally Posted by wiseblood View Post
Sounds like you have some brake drag on the rear. You could back it into every corner, and not blue a rotor.

Check your rear brake and make sure you don't have a seized piston or something!
You are right the "backing it in" doesn't blue the rear rotor...
Maintaining optimum slide angle by controlling wheel spin does!

This pic of Sammy is too Kool! Thanks Kerrgraphix.com



edit to add:

I finally blew Bertha's motor, last week, while on a long haul. Years of long rides where I spent hours and hours of sustained high RPM, plus constantly hitting WFO on every slidable corner have taken their toll. The front cyl popped and spewed 50 miles from home, after pulling us over the top of West Mountain, in Idaho. It was a memorial ride and somewhat fitting that she had a "heart attack" at the end, since the ride was to funeral for an actual heart attack victim. Made it home safe and sound, just had a cup of tea and soup on the side of the road, while we waited for our rescue...

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snowhawk jockey screwed with this post 10-28-2013 at 04:15 PM
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Old 10-29-2013, 02:07 AM   #9245
daxdox
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How many miles did you make on it?

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Old 10-29-2013, 05:36 AM   #9246
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Originally Posted by snowhawk jockey View Post
edit to add:

I finally blew Bertha's motor, last week, while on a long haul. Years of long rides where I spent hours and hours of sustained high RPM, plus constantly hitting WFO on every slidable corner have taken their toll. The front cyl popped and spewed 50 miles from home, after pulling us over the top of West Mountain, in Idaho.


Sorry to hear about the bike! (And, sorry for the loss of your friend.)

What year / mileage?
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Old 10-29-2013, 11:42 AM   #9247
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I just noticed that when I downshift from 6th gear into 5th you can feel (and hear) a kick, it is not that strong but strong enought to notice it.
When I release the clutch slowly or when in low revs there is no kick.
Downshifting all the other gears works with no problems, high or low
revs, releasing the clutch fast etc...

One guy told me that is normal, but it sure doesn't feel right to me.
What do you guys think?
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Old 10-29-2013, 01:46 PM   #9248
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Originally Posted by wiseblood View Post


Sorry to hear about the bike! (And, sorry for the loss of your friend.)

What year / mileage?

Bertha is a 2006. I broke her in as the dealer demo and she was sold to the PO with 600 miles. He put another 4000 on before I got her in early '08. She has been without her ODO ever since, so I don't have actual mileage. Her miles are more like "race miles" anyway, compared to a regular miles of a similar bike ridden on the street. Think probably a 4:1 ratio on dirt. So If my front tire turned 700 miles on my last trip, the rear didn't. The rear spun probably close to 700 miles, just on the 150 miles of dirt...

edit to add:
I already bought a used motor from a bike breaker and it will be here in a couple of weeks! My blown lump is going to be developed into a "project motor" so that I can add some features not found in the stock configuration!
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Old 10-29-2013, 02:03 PM   #9249
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I met a guy a couple of years ago who put s race spec Super Duke engine in an SMR. Dyno showed 142 at the rear wheel.

Worth a thought
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Old 10-29-2013, 03:14 PM   #9250
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I met a guy a couple of years ago who put s race spec Super Duke engine in an SMR. Dyno showed 142 at the rear wheel.

Worth a thought
Such a great idea and if I was building a Pikes Peak motor or going for a 100mph-150mph performance curve, it would be done! I watched with great interest, the SDR motor detailing provided at the KTM meeting, when it came to market. I love the big valve heads, fat cams and oversized Akro exhaust. The fact is that I wish to pull more torque numbers out of the lump without jamming too much horsepower through the powerband.
Chugging at a lower RPM and pulling wheel spin for angle control is easier to cope with, if the HP isn't trying to spike the RPMs with every throttle blip. That leads me to velocity porting and twingle tuning...
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Old 11-02-2013, 05:02 PM   #9251
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I twingled a chain drive Verargo in the eighties , because I could . Sounded like a single and felt like it could idle up side of a house .
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Old 11-03-2013, 07:01 AM   #9252
BuckMoto
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OK, I'll bite. What the heck is twingle tuning?

As far as velocity porting, I hope you document your process Snowhawk. I'll be curious what results you get. My SMR is close to perfect for the riding I do with just the tire change and a 15t front, but it would be perfect if it could smoothly float the front end in 1st at will with just throttle and not loose the mid range/top end punch. I don't need to go more than 100 anymore. It would make for a serious ticket on pavement and I was really flirting with disaster topping out the 16t on dirt. It did make the straight Kansas dirt roads exciting though!

Heading out in just a bit to ride in the mountains.
Best wishes
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Old 11-03-2013, 07:51 AM   #9253
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Altering the cam timing so the cylinders fire 80 degrees , 640 degrees .
Sounds like and pulls like a 950 single !
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Old 11-03-2013, 08:11 AM   #9254
B50Paul
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Easy to do
Disconnect cam drive in one head , rotate engine 360 degrees , reconnect cam drive .
H D flat trackers do for slippery tracks .
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Old 11-03-2013, 03:50 PM   #9255
BuckMoto
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Easy to do
Disconnect cam drive in one head , rotate engine 360 degrees , reconnect cam drive .
H D flat trackers do for slippery tracks .
Does the ignition timing take care of itself? IIRC, I thought I read that it fires every 360 degrees anyway. Do you think that would give me the bottom end I'm after? BTW, is that what they call a "Big Bang" twin? Thanks for the answers.
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