CB900 Scrambler - Rally Approved!!

Re: CB900 Scrambler - Stage Two Begins!!

The BMW 1200GS is over 240Kg wet and they can be fun off road. So you have an advantage over them and its somewhat narrower.
 
Re: CB900 Scrambler - Stage Two Begins!!

notlob said:
The BMW 1200GS is over 240Kg wet and they can be fun off road. So you have an advantage over them and its somewhat narrower.

Lower CG too.
 
Re: CB900 Scrambler - Stage Two Begins!!

Christmas in June.

Here's a little comparison shot of the new suspenders vs the originals.
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And a little mockup. I think the 21" front wheel that's coming with the new forks will balance the look really well. Also, it's still on the lift here so there will be some sag with my ballast on the seat.
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Almost a monolever vibe..
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The math said I would have clearance at full compression but I had to check
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Check! About an inch and a half of clearance.

I'm still working on mounting ideas but at least now I can measure before I start cutting.:evil

Here's what I'm dealing with.....
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Re: CB900 Scrambler - Stage Two Begins!!

hiawassee;21739795 said:
looking at the pics of the bottom mount for the new shock (in the last 3 pics), I'm not sure what you need to cut. looks like it'll mount just fine. did I miss something?

also, can I assume that swingarm mount point is threaded?

The swingarm mount is just a rubber bushing with a metal insert. The clevis on the stock shock is threaded on one of the ears.

Mounting to the stock eye on the swinger forces the shock out of alightment (to the outside) at the bottom. I'm not a fan of that angle. It is more pronounced as the shock compresses and I'm not sure if that lateral force will eat the rubber bushings or perhaps the internal shock seals.

Here's what I have in mind for my first try at mounting. I'm going to machine two plates for each side of the swingarm. Ill bolt them together via the stock mount hole and an additional hole I'll drill through the axle carrier plate on the swingarm.

ShockMount.png
 
Re: CB900 Scrambler - Stage Two Begins!!

Anybody know why my flickr photos show up but photbucket just looks like a link?

I'm using the same "
 
Re: CB900 Scrambler - Stage Two Begins!!

I cant see why that wouldn't work, I'd just make sure that there is clearance between the arm and shock eye so that the weight is on the bolt not the bottom of the eye.

cant help with photobucket I use flickr myself.
 
Re: CB900 Scrambler - Stage Two Begins!!

notlob said:
I cant see why that wouldn't work, I'd just make sure that there is clearance between the arm and shock eye so that the weight is on the bolt not the bottom of the eye.

cant help with photobucket I use flickr myself.


I think a few mm clearance spacing between the eye and the swingarm will do the trick based on the rubber bushing thickness.

I prefer flickr too but it's been blocked by my network at work so I have been putting a few things on photobucket. First world problems. ::)
 
Re: CB900 Scrambler - Stage Two Begins!!

Looks good.
You have to use img tags like this:

img ]
 
Re: CB900 Scrambler - Stage Two Begins!!

SONICJK said:
Looks good.
You have to use img tags like this:

Your linkere [/img ]
[/quote]

I guess they are working. I just couldn't see them on the particular computer I was using. :o Nothing to see here.
 
Re: CB900 Scrambler - Stage Two Begins!!

suspension blah blah wrenchin blah blah.

Lets ride.

I'm taking the Scrambler out for a nice dual sport loop on Sunday. The loop starts north and heads south to Shawnee State Park in southern Ohio. It's 60 miles each way to the start of this loop and then the loop is about 140 miles. Thanks to the guys on the Cinci DS thread for posting up some ride reports of the area and parking the idea.

GeorgesRide.jpg


Here are some videos of off-road racing shenanigans on heavy street bikes to keep you guys entertained while I'm gone. Google W800 Gentlemen Cup for more. You're welcome. :wink:

http://www.youtube.com/watch?v=HawNynxsn7Y

http://www.youtube.com/watch?v=7fyJbmErMSk
 
Re: CB900 Scrambler - Now with 100% more video!!

A little back yard video...some real dirt vids after the weekend. :wink:

http://www.youtube.com/watch?v=HU36pHY3q1Y
 
Re: CB900 Scrambler - Now with 100% more video!!

Link says page not available. :(
I want to see dumb stuff in the dirt on a CB900 ;D
 
Re: CB900 Scrambler - Now with 100% more video!!

crazypj said:
Link says page not available. :(
I want to see dumb stuff in the dirt on a CB900 ;D

How bout now?
 
Re: CB900 Scrambler - Now with 150% more video!!

LBC said:
HA! I knew the linkless discussion would polarize the audience. :-X

Nice avatar johnu!

I'm a mere mortal rider so I've probably never been held back by the capabilities of my bikes suspension, or tires, or motors, or.....

No need to hijack your thread with the linkless debate, I know what worked for me.

You are insane riding that bike on dirt.... I love it!!
 
Re: CB900 Scrambler - Now with 150% more video!!

LOL, vid worked, can't wait to see what antics you get up to on the trail.
Make sure to take a couple of extra SD cards and batteries/charger ;D
If I can't ride, at least I can live vicariously through someone else's bike vids 8)
 
Re: CB900 Scrambler - Now with 150% more video!!

Complete success!:freaky Thanks to all those who help put gpx like this in the public hands.

We left my place at about 8:15 Sunday and got back at 8:00 in the evening. Total milage was 291. I'd say 70 miles of that was gravel and another 30-40 was one lane pavement. About 20 miles of was 4-lane..the rest was 2-lane through the coutryside. Somehow we avoided the rain until about the last 20 minutes of the ride and then just got some sprinkles.

The bike performed really well. (better than my buddies thought it would) The length and weight make it super stable on the dirt and gravel and there's no shortage of smooth power. The Shinko 50/50 tires track really nicely and gripped really well in all but the really deep gravel. The length helps when the rear gets loose because it swings out really slowly. The gps track has our max speed on gravel at 75 and it was super stable throughout that range.

I got turned around by the water bars (dirt mounds that deflect water) when we hit the logging roads. 5 inched of ground clearance and a long wheel base equal getting high centered on the pipes(better than the oil pan). Similarly, the limit to speed on rougher terrain is suspension travel and clearance as seen by my inner fender rub marks. The coming upgrades should fix that.

I'll post up some video in a day or two once I have it edited to a watchable length. I wish the mic on the gopro could do justice to the magical sound of this DOHC motor when it cracks open and breaks traction exiting a turn on gravel. It might just make Chuck Norris weep a single tear of joy. :D


Dirty Girl
IMAG0506.jpg


A little fender rub on the big hits...
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Pipe wrap didn't survive the barrage of gravel. A deflector is needed.

IMAG0510.jpg


Lookout Tower

GOPR0653.jpg
 
Re: CB900 Scrambler - Now with 150% more video!!

LBC your a cray guy, sounded like you had some fun, cant wait for video.
 
Re: CB900 Scrambler - Now with 150% more video!!

Looks like you may also need to fit the bolts through from opposite direction , the heads won't rub on tyre so bad/
Big skidplate formed around exhaust pipes for next time? ;)
 
Re: CB900 Scrambler - Now with 150% more video!!

Highlight reel. There are some seriously fun roads in this part of Ohio!

http://www.youtube.com/watch?v=nhz1uSPIbyU

trail2.png
 
CB900 Scrambler - Now with 150% more video!!

Awesome video. How'd it feel being out on trails on something so heavy?

And I never realized there was anything to do in Ohio other than get to the other side as quickly as possible. ;D
 
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