F4i

[Speed_Racer]

Went to a riding clinic today that focused on turning, and then the whole group/clinic went on a 120 mile ride in the mountains. I think my turning abilities have improved a lot, but holy shit canyon carving and leaning off the bike and gripping the tank is so TIRING. I can beat on the Miata all day in the hills and not feel that tired (the stiff ride hurts more than anything else) but on the bike it's so tiring. Getting some clean corners is so rewarding though.

Also, with the lowered pegs I keep scraping my pegs and boots. Good thing the toe guards on my boots are replaceable.

Oh, and I'm 4 miles from hitting 17,000.

What do you find is getting tired when tackling the twisties?

[Cookie Monster]

What do you find is getting tired when tackling the twisties?

Usually my legs, from trying to grip the tank to keep the weight off my arms, and also from constantly shifting my weight around to hang off the bike. In general I find it takes far more concentration to ride at the same pace that I can drive in the car.

[MX793]

I feel like a bike actually requires less effort than a car when just cruising at a leisurely pace, but much more when really flogging it.

[Speed_Racer]

Maybe I ride lazy, but I can't remember every getting tired legs. I get sore legs from the cramped seating position, and a sore lower back from leaning forward. I agree about the increased concentration needed though.

How's your core strength?

[Cookie Monster]

Hit 20k on the way to work!

[Eye of the Tiger]

Needs more.

[Cookie Monster]

Needs more.

Yeee

[Eye of the Tiger]

Time to adjust valves?

[Cookie Monster]

Time to adjust valves?

I did that 4k miles ago (which was actually just over a month ago).

[Eye of the Tiger]

I did that 4k miles ago (which was actually just over a month ago).

Italian tune-up?

[Cookie Monster]

Italian tune-up?

Surprisingly, at 16,000 miles, 13 of the 16 valves had to be adjusted.

The mechanic said it'd be good for another 20k miles so I'll do it again at 36,000 miles (if I don't crash/get it stolen/etc by then ).

[giant_mtb]

Why do motor sickle engines need their valves adjusted?  How?  I know it's a thing, but I don't know why it's a routine thing whereas for a car, you never hear someone say "yeah, about due for a valve adjustment."

[Eye of the Tiger]

Why do motor sickle engines need their valves adjusted?  How?  I know it's a thing, but I don't know why it's a routine thing whereas for a car, you never hear someone say "yeah, about due for a valve adjustment."

It's a high performance thing. For example, Summit requires periodic valve adjustments.

[MX793]

Why do motor sickle engines need their valves adjusted?  How?  I know it's a thing, but I don't know why it's a routine thing whereas for a car, you never hear someone say "yeah, about due for a valve adjustment."

Combination of factors.  Bikes run at higher RPMs than cars, generally.  Bikes have smaller valves (less valve seat area).  Bikes generally require tighter valve clearances than cars.  Most bikes run solid lifters (Harleys are a notable exception and use self-adjusting hydraulic lifters).  Many cars use self adjusting hydraulic lifters.  But it's not true that cars never need valve adjustment.  Any car using solid lifters, and there are quite a few, will need periodic valve clearance checks and adjustment.  The intervals tend to be much longer than for bikes (60K to 100K+ miles), but that relates back to the other previously mentioned factors.

[12,000 RPM]

What modern cars use solid lifters?

[Eye of the Tiger]

What modern cars use solid lifters?

Summit.

[12,000 RPM]

MODERN cars. Summit prob has TPI

[Eye of the Tiger]

MODERN cars. Summit prob has TPI

Naw dood. Summit is MPI, OHC, PS, PB, AT, etc.

[Eye of the Tiger]

omg, I just realized you said TPI, and not TBI.
I wish Summit had Tuned Port Injextion

[MX793]

What modern cars use solid lifters?

Some lower end models do, believe it or not.  Newer Hyundai 4-bangers have a 60k mile valve clearance inspection and solid lifters.

[12,000 RPM]

omg, I just realized you said TPI, and not TBI.
I wish Summit had Tuned Port Injextion

I meant TBI I thought it stood for throttle point injection.

I always imagined TBI to be like a baby blowing spitty raspberries. Its no wonder the 100 HP 5.0L SBCs got like 3 MPG

[BimmerM3]

TBI? I sure wouldn't be surprised if Summit had traumatic brain injury.

[Eye of the Tiger]

TBI? I sure wouldn't be surprised if Summit had traumatic brain injury.

I would reply with something witty, but I have not yet reached the Medical Terminology unit of my course.

[Cookie Monster]

Just ordered a DID chain and sprocket kit for the F4i. Chain looks saggy and is nearing the end of the adjustable range, plus there's a couple small kinks.

I just hope it lasts the next two weeks before I can get it on. Only getting it on Monday.

Now I have to see how hard it is to replace all this myself.

[Speed_Racer]

Just ordered a DID chain and sprocket kit for the F4i. Chain looks saggy and is nearing the end of the adjustable range, plus there's a couple small kinks.

I just hope it lasts the next two weeks before I can get it on. Only getting it on Monday.

Now I have to see how hard it is to replace all this myself.

It's not hard at all. I think it took me longer to figure out the chain tool (didn't have instructions) than it took to swap my chain out for a new one.

[Cookie Monster]

Chain tool? I need to go buy one of those too?'

Sigh

[Speed_Racer]

Here's the one I bought. Combo chain breaker and chain riveter. Though if you have a dremel, you can saw off the old chain and just pick up a cheaper chain riveting tool.

http://www.amazon.com/dp/B0099Z4MJ2

Edit: CycleGear has the same thing for $5 less.
http://www.cyclegear.com/STOCKTON-TOOL-COMPANY-Chain-Breaker-and-Rivet-Tool-Kit

[Cookie Monster]

Oh I guess that isn't too expensive. I'll have to watch some YouTube videos on how to do it.

[Eye of the Tiger]

Just get a bigger rear sprocket. More fasterer!

[Cookie Monster]