Bikes, Hints'n'Tips > Fazer 1000/FZ1 corner

R1 forks set up / adjustments

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Trebus:
As I know this has been done lots of times, looking for some advice.

Recently did the mod, R1 4xv forks with R1 yokes and pressed Fazer stem fitted. Springs not changed and used Motorex 7.5w oil, mainly due to time constraints and was available from stock. Weight in full gear for me is approx 80kg. All settings as per 4xv R1 as a starting point.

The problem I have is that it seems to patter and a bit pogo sticky over bumps. No issues with head bearings etc.

Is it likely the springs are way wrong or oil viscosity? Or perhaps needs more rebound adding? I’m far from a suspension specialist but it just feels a bit wrong.

Thanks in advance.

celticbiker:
First off I'd suggest the oil is way off. Castrol 10w is the closest to the correct viscosity.
Although it says 10w on the bottle it means nothing, different manufacturers 10w have different viscosities.
Once you have the correct oil you can start playing with set up.
Till then I'd suggest making sure the static and dynamic sag is correct front and rear.
How many clicks out are your compression and rebound damping settings now and how many clicks do you have available on each?
Rear damping settings information would be handy too.
Where are you based? if it's not too far I don't mind meeting up for a looksee.

5LV:
Until you get your spring rate correct you are pissing into the wind. Standard 4xv springs are .7xxkg/mm. After 20 years they'll be a lot softer. I'd suggest between .8 & .9kg/mm max depending on riding style. After that you can mess about with the damping.

Trebus:
Cheers chaps. I’m based in Leicestershire.

Rear shock is from R6, not sure on settings but it feels good.

I thought I might get away with standard springs, opinions are varied on this subject to say the least. They don’t feel too soft but I know this is quite subjective. Overall it turns better so I’m convinced enough to persevere with the R1 set up rather than the standard forks which could go back in, got a donor stem for the conversion.

PieEater:
Before you start spending money it sounds like you need to look at your firming up the damping probably both compression and rebound but I would start with rebound if the front is pogoing. Go out for a ride and make small adjustments then ride until you have figured out whether the bike feels better or worse then make further adjustments until you have it where you feel it is handling the best, once you've done rebound move on to compression. It's not rocket science or anything to be wary of.

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