Floppy rear end and Dog Bones modification - Yamaha FJR Forum : Yamaha FJR Owners Forums
 
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post #1 of 9 (permalink) Old 06-27-2020, 05:41 AM Thread Starter
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Floppy rear end and Dog Bones modification

2001 FJR 1300. Ive had this bike a month now, and have come to dislike it. Main reason? Too low and floppy at the back. Apparently a trait with this model. So... I decided to fabricate new, shorter dogbones (swingarm to suspention struts). I went 10mm shorter, which has raised the rear by approx 50 to 60mm, and i have to say, it feels brand new! Its now a different beast. Easier to flick into the twisties and feels like a lighter bike all round. Added benefit which i didnt factor in, is that the shorter geometry has actually slightly stiffened the rear too, which is a proper bonus, as ive saved myself a good amount on a new coilover!
Anybody else with a similar story?
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post #2 of 9 (permalink) Old 06-27-2020, 05:43 AM Thread Starter
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Pics... and yes, its due a clean.
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post #3 of 9 (permalink) Old 06-27-2020, 06:43 AM
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Liam, sounds good ! Iíll add that the early fjrís were notoriously under sprung which Iím not sure if a gen 3 rear shock will work on your gen1 but I know itís an inexpensive upgrade for the gen 2ís.

I personally havenít experienced a gen 1but those here that have them have routinely complained about the lack of proper spring in them.

Also I would suggest you add your location and bike year to your signature line as it will help in diagnosing things down the road,,,, welcome !

Steve P
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Ride more,, worry less !
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post #4 of 9 (permalink) Old 06-27-2020, 07:56 AM
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That's a lot of rise.... I believe the suspension pivot has a 2.7:1 ratio, so 10mm should get you around 27-30mm height perhaps... however, a Gen3 shock will definitely improve the ride height even further with its stronger springs. Gen1 was very undersprung.

The steering geometry has definitely changed, faster turn-in. All good.

Ray
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post #5 of 9 (permalink) Old 06-27-2020, 10:26 AM
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Quote:
Originally Posted by Liam Smyth View Post
2001 FJR 1300. Ive had this bike a month now, and have come to dislike it. Main reason? Too low and floppy at the back. Apparently a trait with this model. So... I decided to fabricate new, shorter dogbones (swingarm to suspention struts). I went 10mm shorter, which has raised the rear by approx 50 to 60mm, and i have to say, it feels brand new! Its now a different beast. Easier to flick into the twisties and feels like a lighter bike all round. Added benefit which i didnt factor in, is that the shorter geometry has actually slightly stiffened the rear too, which is a proper bonus, as ive saved myself a good amount on a new coilover!
Anybody else with a similar story?
Good job. Now your center stand and pegs won't ever scrape. Should you change your forum name to Daddy Long Legs! LOL

07 FJR 48,000 miles 03 Yamaha FJR1300
1986 Yamaha FZX700 1977 Kawasaki KX250 1978? Yamaha TY250 1979 Yamaha YZ250 1970 850 Moto Guzzi 1974? Honda XL 100 1978? Yamaha XT500 1975 Yamaha RD350B 1964 Bridgestone 90S
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post #6 of 9 (permalink) Old 06-27-2020, 11:58 AM
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Still doesn't fix the worn out 19year old shock that was crappy to begin with.

Professional Mechanic
2014 Yamaha FJR
2001 Suzuki Bandit Highly modified
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post #7 of 9 (permalink) Old 06-27-2020, 12:38 PM
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agree....the shock was probably the problem in the first place, sagging, here is a link for a new gen3 shock that has a heavier spring but will fit yours, may not be as good as some but not too expensive>> https://www.partzilla.com/product/ya...add883317c2da0

Last edited by fjroddy; 06-27-2020 at 12:42 PM.
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post #8 of 9 (permalink) Old 06-27-2020, 12:58 PM
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Suspension matrix for all FJR's shows you the spring rates for each Generation.


https://www.fjrowners.com/forums/9-f...on-matrix.html

Ray
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2014 FJR1300A - Root Beer (sold)
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post #9 of 9 (permalink) Old 06-27-2020, 01:15 PM
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Clean looking used one from Australia for a tick over $200 USD...

https://www.ebay.com/itm/Rear-Shock-...Condition=3000

ʎɐqǝ uo pɹɐoqʎǝʞ ɐ ʎnq ı ǝɯıʇ ʇsɐן ǝɥʇ sı sıɥʇ

2013 Stone Grey
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