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Old 02-18-2013, 05:14 PM   #3421
Aquatic
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That looks the same as mine. Any idea on the year model?

Quote:
Originally Posted by tomatoe333 View Post


Here's my mount. Made of 1/4" thick aluminum plate. Used a friend's bandsaw, belt sander, drill press, and milling machine.
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Old 02-18-2013, 05:55 PM   #3422
tomatoe333
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Originally Posted by Aquatic View Post
That looks the same as mine. Any idea on the year model?
It's a little bit different, in that there's a boss that sticks out at the front, with a hole vertically in it for mounting the number plate. That's the hole I used for the screw.

I _think_ it was listed as an 03 YZ250f when I bought it and the lower triple off of ebay last year. The forks were from an 02 yz250, and fit perfectly into the triples.
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Old 02-18-2013, 06:39 PM   #3423
Aquatic
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Quote:
Originally Posted by tomatoe333 View Post
It's a little bit different, in that there's a boss that sticks out at the front, with a hole vertically in it for mounting the number plate. That's the hole I used for the screw.

I _think_ it was listed as an 03 YZ250f when I bought it and the lower triple off of ebay last year. The forks were from an 02 yz250, and fit perfectly into the triples.
I have the remnants of said boss! Grinding marks as evidence
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Old 02-18-2013, 10:33 PM   #3424
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Who wants to sell me their old 19" BMW wheel ?
Can work with 21", but would prefere 19" (or 17" if anyone had that made up before going with yammie forks)
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Old 02-19-2013, 10:24 AM   #3425
Lupin 3rd
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Who wants to sell me their old 19" BMW wheel ? [...]
PM Sent.
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Old 02-26-2013, 10:44 PM   #3426
Gangplank
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Reach around?

So now that the front end is figured out....

And since I just acquired an '07 F650GS for cheap it got me thinking.

Once I complete the swap to YZ250F front end... what can be done to the rear??!?@!?

Ideas here
http://www.advrider.com/forums/showt...1#post20820501
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Old 02-27-2013, 06:58 AM   #3427
tomatoe333
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Quote:
Originally Posted by Gangplank View Post
Once I complete the swap to YZ250F front end... what can be done to the rear??!?@!?

Ideas here
http://www.advrider.com/forums/showt...1#post20820501
I dunno, it seems like a lot of work for probably only a few pounds of weight savings. There are plenty of other things that will give more return for the effort. I'd start with removing the ABS, aftermarket exhaust, and battery replacement (lithium). Put on a decent rear shock with enough travel to match the front, and just ride the hell out of it.
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Old 02-27-2013, 07:17 AM   #3428
isgila
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+1 on riding the hell of it..
Exploring offroad with hard panniers and ermax screen.. Not a good idea..
Broke pannier frame and ermax screen. Any other screen to recommend?

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Old 02-27-2013, 07:17 AM   #3429
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Quote:
Originally Posted by tomatoe333 View Post
I dunno, it seems like a lot of work for probably only a few pounds of weight savings. There are plenty of other things that will give more return for the effort. I'd start with removing the ABS, aftermarket exhaust, and battery replacement (lithium). Put on a decent rear shock with enough travel to match the front, and just ride the hell out of it.
Already planning to remove ABS, aftermarket exhaust, and shock will be swapped. Lithium is a minor savings compared to what I expect the swing arm will bring.

The swingarm is steel. A magnet sticks to it. Lol!!
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Old 02-27-2013, 07:22 AM   #3430
WayneC1
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Anyone want send me an ABS bracket ?, looks like it would make a fine Lithium battery mount
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Old 02-27-2013, 07:23 AM   #3431
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Originally Posted by Gangplank View Post
The swingarm is steel. A magnet sticks to it. Lol!!
Yes it is. But I'm willing to bet it's lighter than you think...
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Old 02-27-2013, 07:28 AM   #3432
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Yes it is. But I'm willing to bet it's lighter than you think...
What do you think the stock one weighs?

My thinking on bike diets is replace heaviest/most gain for the $$ items first.



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Old 02-27-2013, 07:40 AM   #3433
LoJack
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It's about 13 pounds. What does your average 600cc Alu swing arm weigh?

I looked for a while for a replacement and think that an ATK swingarm might fit, but don't know for sure. I wasn't able to find one for a while and then sort of left it. Most are too narrow for the Dakar's Rotax. I'd still be interested in replacing it if I knew what to look for. Maybe you just need to find a motorcycle salvage yard and bring some measuring tools.

I made a new 4130 subframe that weighs 5.5lbs. With all the other stuff that I took off, I've probably lost about 35lbs, but it's still a pig. Still love it, though.
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Old 02-27-2013, 08:33 AM   #3434
Gangplank
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Quote:
Originally Posted by LoJack View Post
It's about 13 pounds. What does your average 600cc Alu swing arm weigh?
Only weights 13 lbs total? That sounds pretty light for something that big made of steel.

Don't know what the average 600cc might weigh. Why 600cc? Why not off a 250 or 450 dirtbike? They are made to carry light dirtbikes coming down off 20 foot jumps. Do you think it will break under the load of a F650 riding dirt roads?

Keep in mind we are talking about weight savings of the swingarm + lighter wheel, rear axel, etc.
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Old 02-27-2013, 09:39 AM   #3435
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I'm thinking that most 600cc+ bikes that have an aluminum arm are probably a bit lighter than this thing to begin with. But otherwise,

I used a bathroom scale to weigh mine. Took all the hardware off, including the chain adjusting bits. Did not remove the pivot bushings and bearings.
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