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Author Topic: Has anybody done a extended swing arm ?  (Read 8780 times)

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Offline KRONUS0100

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Re: Has anybody done a extended swing arm ?
« Reply #25 on: September 06, 2011, 06:39:53 AM »
hmmmm.  on my 76 CB750F I did the DOHC swing arm install complete with the Showa shocks off the donor bike.  I run a full Vetter Windjammer 3 with lowers on my bike.  The extra 2 inches of the new swinger have added more stability to the bike in the wind.I dont know why, it just does.  Bike still corners great.  2cd best improvement i have done to the bike.  First was the new braided stainless brake lines.
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MATT
current bikes:  1976 CB750F, 1981 GS1100E
bikes owned:1981 GL1100I, 1990 GS500E, 1981 GS850, 1977 and 1979 GS750, 1974 CB750, 1975 CB750, and a 1982 GS750E

Offline 754

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Re: Has anybody done a extended swing arm ?
« Reply #26 on: September 06, 2011, 08:03:19 AM »
My longer lowered bike was far more stable, you can let go of the bars and it just went straight.. right down to 10 or 15 mph..
 I really doubt that a lot of us  would hate the difference, unless you are doing canyon carving 90 % of tthe times.
 I think as long as you are shorter than a Rocket 3, you are golden..

 Terry,a local guy here has a carburated v-twin, that made more hp and torque than your three (on its first pull).. added  a small dose of nitrous, it ran 200 into the time trap, ate a piston and coasted out at 190mph on the great white dyno..... I think he got his aero right.. not bad for a first try..
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Kelowna B.C.       Canada

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Offline Eddie

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Re: Has anybody done a extended swing arm ? UPDATE...extended 2"
« Reply #27 on: October 29, 2011, 03:08:42 PM »
UPDATE !   heres a mock up with the swing arm extended 2"..sweeeet.  I like it. Also put high temp Techflex on exhaust pipe and put carbs back on.....now just have to figure out a rear fender..
« Last Edit: December 31, 2011, 02:06:22 PM by Eddie »
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Offline Eddie

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Re: Has anybody done a extended swing arm ?
« Reply #28 on: December 31, 2011, 02:09:32 PM »
new pic ! see post above
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Offline rb550four

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Re: Has anybody done a extended swing arm ?
« Reply #29 on: January 01, 2012, 08:34:59 PM »
Yeah, 2 years ago I stretched a 550 swingarm out 2 inches and had a set of forks 4 inch extended. It rides low and straight .The only problem was the fender mount bolts scrubbed on bumpy roads. The ride is better with the lay-down shocks,I like it. I cut the swingarm just past where the gusset starts midway the shock mount to keep it straight, inserted a smaller tube inside and the same size tube outside lined up the gussets and welded it solid then filled in the gusset. This won't get you a fatter tire,but it's a nice alteration.
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A few Honda 500's, a few Honda 550's, a few Honda 650's, '72 cb 450, a couple 500/550/650 hybrids, and 2001 750. 
  550 Snowbike -Somebody had to do it.
  http://forums.sohc4.net/index.php/topic,101678.0.html             
http://forums.sohc4.net/index.php/topic,137317.msg1550907.html#msg1550907

Offline Eddie

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Re: Has anybody done a extended swing arm ?
« Reply #30 on: January 02, 2012, 07:14:26 AM »
cool. I bought a donor swingarm and cut 3" off of the front , where the piviot is" , notched it to a half circle and added it to the front of the orig swing. welded it all the way around then added a 1/8" plate to the bottom to overlap the seam...should strong enough..
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Offline Emokid

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Has anybody done a extended swing arm ?
« Reply #31 on: January 02, 2012, 08:32:16 AM »
Ertvfttu
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-76 550f ,transforming into the 798 "Nazgul" cafe
http://forums.sohc4.net/index.php?topic=97563.0

Offline Eddie

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Re: Has anybody done a extended swing arm ?
« Reply #32 on: January 02, 2012, 08:44:46 AM »
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Offline Emokid

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Has anybody done a extended swing arm ?
« Reply #33 on: January 02, 2012, 11:46:43 PM »
:) sorry , just my 2,5 year old son chiming in with his comments , come to think of it , that actually makes just as much sense as some posts i have seen on various forums :)
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-76 550f ,transforming into the 798 "Nazgul" cafe
http://forums.sohc4.net/index.php?topic=97563.0

Offline Eddie

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Re: Has anybody done a extended swing arm ?
« Reply #34 on: January 03, 2012, 05:37:13 PM »
LOL !!  true that..
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