Rear suspension replacement - Honda CRF1000L Africa Twin Forum
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post #1 of 12 (permalink) Old 05-02-2016, 11:08 AM Thread Starter
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Rear suspension replacement

I have to replace my original rear suspension because I usually go to longer trips and need to load more weight then maximum allowed by Honda.
Help me to choose that you write me availables.
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post #2 of 12 (permalink) Old 05-02-2016, 11:29 AM
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The maximum weight is not just down to the rear suspension. You need to make sure the rear sub frame is strong enough. Start with a much heavier spring, the shock isn't bad. Remember its the spring that supports the weight of the bike not the damping.
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post #3 of 12 (permalink) Old 05-05-2016, 12:26 PM
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I'm going this route:
http://hyperpro.com/hyperpro-for-hon...l-africa-twin/

The standard spring is too short, I only weigh 75 Kg and need 25 pre-load clicks to get 30% sag. That leaves 5 more clicks when I add a small pillion and 2 panniers.

It handles like a pig loaded. Honda recommend 2.0 bar front tyre pressure, it runs wide in mountain turns, enough for my pillion to notice. KTM recommend for their 990 Adventure, 2.4 bar, probably a safer pressure for the road. I ended up increasing the rear pressure to 3 bar otherwise it got very scary on Spanish motorway curves as the tyre ended up steering the bike as it followed imperfections in the surface.

Still a nice bike though.
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post #4 of 12 (permalink) Old 06-17-2016, 02:11 PM
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I believe replacing the spring on the OEM shock will be a waste of money. I have my suspicions of the OEM shock in its current state. The recommended standard spring preload setting is 7 clicks from minimum. I am 75kg and already I have the preload at 27 clicks from minimum to get a balanced setting with very little extra weight on the bike. The rebound damping setting is recommended at 11 clicks from Maximum. I am already at 8 clicks from Max and setting the rebound at max makes little difference. As such putting on a stronger spring would probably overcome the rebound damping at max setting.


There are two options, either replace the shock fluid with a heavier oil, or replace the shock as a unit. I have a Wilbers shock on my Triumph and imho it is a superior item to the oem Honda unit. It is managing the ride on a much heavier bike and has lots of spare adjustment to use. I will get by for now with my oem but I suspect that I will have to do something about it in the not too distant future.
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post #5 of 12 (permalink) Old 06-17-2016, 06:11 PM
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Does anyone know What are the factory settings on the front forks ? I was messing with it and made it feel rough , but don't remember the original settings .
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post #6 of 12 (permalink) Old 06-17-2016, 08:12 PM
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Quote:
Originally Posted by Mad Frosty View Post
Does anyone know What are the factory settings on the front forks ? I was messing with it and made it feel rough , but don't remember the original settings .
Owner' manual pg 121: Spring preload - 5 turns from soft (DCT 8.5 turns) / Rebound - 2 1/4 turns from max / Compression damping (bottom of fork) - 8 clicks from max.
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post #7 of 12 (permalink) Old 06-23-2016, 05:35 PM
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Alex with Konflict MotorSports just got his AT and will be diving into his own suspension for upgrades. Here is his link. I have used him and he is awesome. He has recently build suspensions for a couple Dakar Rally riders from the states. This bike is his cup of tea. You want better ride, then think about him.

http://www.konflictmotorsports.com/

He is in Kent, WA. He works hand in hand with TouraTec suspensions for GS's, and Super Teneres'. I will have him do my front forks first to suit my riding and weight. YES it makes a huge difference.

Regards,

Jeff
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post #8 of 12 (permalink) Old 06-24-2016, 05:13 AM
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I see on the ADV forum that Wilbers have a 641 for the AT. That is the route I will take in due course as I have one on my Triumph and it is an excellent shock.
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post #9 of 12 (permalink) Old 02-08-2017, 11:58 AM
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I like the manaul adjustment on the AT suspension and generally don't have a problem with it. I am at 38% sag at the rear with 125kg load at max preload though. To me this is too soft, even for normal weight riders with gear (mentioned elsewhere on this forum). I thought it would be useful to chart the rear sag settings Vs preload. This might give others, at a more normal weight (!), plus panniers/racks/luggage/tent etc. a view of what their sag might look like. e.g. 75Kg rider and 50Kg pillion/luggage.

I have a HyperPro spring coming today, it should just raise me 20mm across the board and allow me to reach 30% sag on a preload of 35 clicks. I can't fit it for a couple of weeks but I have no doubt as to their claim on the extra 20mm. When further loaded or with pillion I will just have to work on a higher sag % front and back, that is not a disaster in itself unless I am riding aggresively off-road (which I don't). At least the Hyperpro will balance the front and back somewhat which is the main goal.

I initially considered the Touratech +20mm kit which is front and back springs but I never had a problem achieving 30% sag at the front. That kit uses the exact same Hyperpro rear spring so it was a no brainer to just swap the rear spring at a very much lower cost than the whole kit. Rugged Roads obliged in this respect.
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Last edited by eltel62; 02-08-2017 at 12:26 PM.
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post #10 of 12 (permalink) Old 02-23-2017, 11:50 AM
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Updated rear sag table for 125Kg load with Hyperpro +20mm spring. Repeated on another post, (Removing the Rear Shock), sorry for duplication.
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