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Hinckley Classic Triples 885cc Classic Styled T3's: Legend, Thunderbird, Thunderbird Sport & Adventurer.

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Old 11-03-2009, 07:29 AM   #1 (permalink)
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Hagon springs(again)

I´ve read all the posts about it, but I still wanna ask about the oil spec, Hagon strongly recommend you follow their recommendation, as for my Legend -2000, 10w , 140mm airgap.
Some here says 15w 115 mm air and using original spacers.
My weight is around 215 lbs, those of you that have Hagons progressive springs, how did you do, and are you happy with your settings?
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Old 11-03-2009, 02:25 PM   #2 (permalink)
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I´ve read all the posts about it, but I still wanna ask about the oil spec, Hagon strongly recommend you follow their recommendation, as for my Legend -2000, 10w , 140mm airgap.
Some here says 15w 115 mm air and using original spacers.
My weight is around 215 lbs, those of you that have Hagons progressive springs, how did you do, and are you happy with your settings?
I have Hagons ('progressives' - really dual rate I think). They are quite soft in their initial travel even for my 150lbs, or, put another way, give great compliance over the rough roads here. I also have Racetech cartridge emulator valves which means, apart from their greater damping linearity, I've been able to adjust compression & rebound damping separately - the former with the emulators, latter by changing oil grade. 15W oil has sharpened up rebound damping nicely (rebound is not altered at all by the emulators). I've also read (on the internet) that many stock bikes are notably under damped for (fork) rebound & certainly agree with that on our triples.

I think the Hagon's with 15W oil could work well with your weight on a stock set up. The increased compression damping from the heavier oil will tend to compensate for the Hagons' initial softness at your weight & increased rebound will help overall control.

I've kept to a stock oil level - really air gap. Others have reduced their air gap, particularly to reduce fork dive under braking I believe. I found reducing the air gap quickly created too much stiffness as the forks compress. Tricky to get a good compromise setting, but it depends where you're trying to optimise performance. Less fork dive inevitably means greater stiffness (less compliance), at least beyond a certain amount of fork travel - a fundamental compromise with telescopic forks.

My forks dive quite a bit under braking, but in a reasonably controlled way & I feel confident in my braking technique. I often practise extreme braking on a suitably quiet, well-surfaced stretch of road by way of instilling & maintaining skills - vital in an emergency.

I mention this because changing front suspension settings will change how the bike feels when braking.

All that said, the best change I made to front suspension was probably in fitting a different rear shock - off a 'B' model ZX9R in my case. The thread 'Cheap rear suspension upgrade' gives a lot of info on the options.

Mike
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Old 11-03-2009, 03:13 PM   #3 (permalink)
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Thanx, I did order a Hagon rear shock too!

Then I will try 15w oil and stock oil level, believe it is 126 mm gap with forks compressed.
How about spacers, am I right to assume that you used stock spacers?
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Old 11-03-2009, 04:25 PM   #4 (permalink)
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Quote:
Originally Posted by Sweden View Post
Thanx, I did order a Hagon rear shock too!

Then I will try 15w oil and stock oil level, believe it is 126 mm gap with forks compressed.
How about spacers, am I right to assume that you used stock spacers?
Yes, 126mm is what I recall for the air gap. As for spacers, I am using the stockers but with the emulators that means I'm effectively +10mm. Spacers set the preload/sag, usually measured with rider on board - in my case around 40-45mm. As you are heavier also, it's very likely you'll want to fit longer spacers. I've used plastic water pipe (heavy gauge) following advice of others here. It works very well with a little care to get a straight cut & is cheap. However, the pipe wall thickness is significant in added 'volume', so you will need to account for that (with a bit of maths) when setting the air gap. (Gap will need to be increased.)

Mike
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Old 11-04-2009, 07:07 AM   #5 (permalink)
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Smile

Thank you for your answer, now I know how to set this up!

Regards Jan
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