What's the worst that could happen? Warming up

Message

dyzio · #1 Post by **dyzio** » Wed Nov 10, 2010 7:13 pm

Howdoo :)

We all know the bike takes fair a while to warm up properly.

Unfortunately, early on my commute I have to pass a few lights, which are always RED

and the bike has stalled a few times when kicking into gear.
However once warmed up to about 60C it's fine.

So... knowing our "choke" isn't exactly a a choke, can it be left on till the bike reaches about 60C degrees?

Cheers

anzacinexile · #2 Post by **anzacinexile** » Wed Nov 10, 2010 8:48 pm

You wont do any harm by leaving it open, it'll just crank up your tickover - the ECU takes care of the fuel metering

D-Rider · #3 Post by **D-Rider** » Wed Nov 10, 2010 9:10 pm

Yes - what anzac says.

I close my fast idle when it gets above 44C - but that's just personal preference.
I too have an urban commute with a number of junctions and traffic lights.

FalcoJock · #4 Post by **FalcoJock** » Wed Nov 10, 2010 9:30 pm

This sounds like a problem with clutch drag. Mine does that especially for a couple of months after an oil change when it is still getting fully warmed through. Though I'm not commuting with mine I can imagine it could be problematic. It's tempting to run the engine tickover a bit faster, but I wonder if that's the best solution.

There was a thread a while back about changing the clutch jet size (if memory serves) to cure this. I'll see if I can get the right info. It's on my todo list.

FalcoJock · #5 Post by **FalcoJock** » Wed Nov 10, 2010 10:43 pm

This is one of the articles I was thinking of. Changing the jet size reduces clutch drag (so the theory goes). It might be a contributing factor.

FalcoJock · #6 Post by **FalcoJock** » Wed Nov 10, 2010 10:44 pm

http://www.apriliaforum.com/forums/show ... clutch+jet

it would help to copy in the link - doh!

dyzio · #7 Post by **dyzio** » Wed Nov 10, 2010 10:51 pm

Yeah, but that jet is for neutral isn't it? I'm in that thread, still have the jet (on the shelf

).

Nooj · #8 Post by **Nooj** » Wed Nov 10, 2010 11:04 pm

I gradually ease my fast idle off as I go, shutting it right down when the temp reads 55. The bike seems to be happy with that.

dyzio · #9 Post by **dyzio** » Wed Nov 10, 2010 11:08 pm

Nooj wrote:I gradually ease my fast idle off as I go, shutting it right down when the temp reads 55. The bike seems to be happy with that.

Sounds like what I do.

HowardQ · #10 Post by **HowardQ** » Thu Nov 11, 2010 1:18 pm

Same for me, if I don't have time to fully warm it up first, I gradually ease it off until warmed up.

old git · #11 Post by **old git** » Thu Nov 11, 2010 6:57 pm

I switched plugs to 8's from std. 9's at the beginning of the year warms up much quicker and plugs stay real clean. Have had them out twice to check & they are spotless, not burnt or anything either.
In summer, temp can rise if stuck in traffic for a while, but we ain't supposed to be at in traffic are we!

FalcoJock · #12 Post by **FalcoJock** » Thu Nov 11, 2010 9:09 pm

The key point that I picked up on is stalling when kicked into gear. That says clutch drag to me and that's exactly what mine does until thoroughly warmed up. The other issue is not slipping easily into neutral until warm. I'm sure I have read that the clutch jet helps with both symptoms.

Always willing to be proved wrong, so when I get round to changing the jet on mine, I'll post my experience.

Cheers.

D-Rider · #13 Post by **D-Rider** » Thu Nov 11, 2010 9:28 pm

FalcoJock wrote:The key point that I picked up on is stalling when kicked into gear. That says clutch drag to me and that's exactly what mine does until thoroughly warmed up. The other issue is not slipping easily into neutral until warm. I'm sure I have read that the clutch jet helps with both symptoms.

Always willing to be proved wrong, so when I get round to changing the jet on mine, I'll post my experience.

Cheers.

Yes indeed - it should help.

k1w1boy · #14 Post by **k1w1boy** » Sun Nov 14, 2010 10:46 am

...interesting thread, given my historical starting woes

FYI My new yuasa battery is doing a fine job here as the weather freezes over