Buttery Smooth KooKaLOO On Tap

[Arnie]

Noel said, "My loathing of sarcasm prevents me from suggesting doubling up on the return spring on the carbys and have matching heavy controls on both sides."

But then you'd have a Ducati.

Arnie

[yamaha fj rider]

Noel said, "My loathing of sarcasm prevents me from suggesting doubling up on the return spring on the carbys and have matching heavy controls on both sides."

But then you'd have a Ducati.

Arnie

   

Kurt

[Steve_in_Florida]

Just got back from a spirited ride, and am so happy with my renewed clutch performance.

The clutch handle pull is much than before, but certainly not overpowering.

Maybe I should do a "flapectomy" next?  (...and quit just TYPING about it!)

Reference:

http://www.fjowners.com/index.php?topic=3791.0  and  http://www.fjowners.com/index.php?topic=2024.0

Steve

[FJmonkey]

Maybe I should do a "flapectomy" next?  (...and quit just TYPING about it!)

The flapectomy is not required on FJs with fuel pumps. It will make the singing go away but the pump assures proper fuel pressure. With gravity feed the fuel pressure reduces as it gets lower in the tank. So any restriction is critical.

[Steve_in_Florida]

I find that if I put the bike away after a ride with less than a full fuel tank, she sings like a choir.

...just something more to do that don't cost too much!

[fj11.5]

i de,flapped the 88 , fuel pump or not, figured if the tank vent gets blocked it would starve for fuel anyway,, no more singing for her, she just has to sit quietly now like the other two 

[ribbert]

Noel said, "My loathing of sarcasm prevents me from suggesting doubling up on the return spring on the carbys and have matching heavy controls on both sides."

But then you'd have a Ducati.

Arnie

Or a Laverda or a Moto Guzzi. The very thought of any of these makes my hands ache.

Noel

[ribbert]

The exceptions to this would be engines that have a substantial increase in power and bikes running synthetic oil.

When I first bought my '90 the carbs were fouled and I took to Randy for a rebuild...  8,800mi on the bike and in great shape, just unused.  Had dino oil and a very good condition clutch, about right for the minimal age.  When Randy had finished his magic, the clutch slipped on the test ride at about 6,500 RPM.  We doubled the spring and things were great.  

I think the part you're missing is those springs likely get weak over time.  You might just put a new one in and be fine, but I think the increased clutch lever effort is massively overblown and having a nice strong engagement of the clutch is worth the trade.  I think the original spring was marginal and more biased toward easy lever pull in the first place.

Just my $0.02...  

Frank

BTW - even with the 1349cc monster in my '92, the doubled spring does the trick nicely.

The exceptions to this would be engines that have a substantial increase in power and bikes running synthetic oil.

When I first bought my '90 the carbs were fouled and I took to Randy for a rebuild...  8,800mi on the bike and in great shape, just unused.  Had dino oil and a very good condition clutch, about right for the minimal age.  When Randy had finished his magic, the clutch slipped on the test ride at about 6,500 RPM.  We doubled the spring and things were great. 

I think the part you're missing is those springs likely get weak over time.  You might just put a new one in and be fine, but I think the increased clutch lever effort is massively overblown and having a nice strong engagement of the clutch is worth the trade.  I think the original spring was marginal and more biased toward easy lever pull in the first place.

Just my $0.02... 

Frank

BTW - even with the 1349cc monster in my '92, the doubled spring does the trick nicely.

There is a means of determining how much grip a clutch has over and above just not slipping.

I did it today out of interest and the standard clutch is more than adequate for the best tuned FJ out there and then some..

I don't know about your experience at such low mileage but I can't recall any issues about weak clutches on FJ's when they were new. It also appears with forum members that clutches are only starting to slip at fairly high mileages

I didn't "miss" anything with the clutch spring, I know they get weak over time. I had already replace that and it only made a margingal difference.
Had I not allowed myself to be influenced, I would have done it the usual way, plates first, THEN spring if needed.

While the widespread use of this fix is unlikely to spread beyond the forum, its seems its popularity here remains assured.

Anyway, your clutch doesn't slip, my clutch doesn't slip, max power to the road any gear any speed, life's good.

Noel