Topic: The Motorcycling Thread

[Arthur Dent]

Does it idle ok then stall when you give it decent throttle? Definitely could be the accelerator pump. My old Epic Enovy did that.

Most of them look something like this. Not familar with your exact carb

[blur911]

My Vino 125 has more emissions controls stuff that you can count on one hand. I heard my Vino 125 also has an accelerator pump that could be some of the cause of my stalling woes but no one's told me where this accelerator pump is and I can't figure it out.

It's assembly #8, the rod set.
http://www.bikebandit.com/oem-parts/2007-yamaha-vino-125-yj125w-carburetor/o/m145024sch531261

[dkaz]

It occasionally stalls at idle, occasionally stalls when I give it gas from idle, dammit why am I throwing so much money at this damn scooter lol.

Thanks blur911. Yes the service manual specifically calls that part an accelerator pump. People have disabled it so I'll try to figure out how.

[PJungnitsch]

On a few of my bikes the idle mixture came way too lean from the factory, causing all sorts of idle and off idle problems. Adjusting the mixture (which sometimes required drilling out a plug covering the screw) made a big difference.

[johngenx]

Tuning two stroke motocross race bikes was the biggest challenge.  There were usually a few expansion chambers to work with, but then jetting was the big one that took time.  But, once you nailed it, look out, you had a very light bike with a lot of power.  While I enjoyed seat time on the big bore bikes, the 250s were more than enough for competing, my gawd they were fast.

[dkaz]

An old coworker of mine got a 96 Yamaha DT200, dual purpose two stroke 200cc motorcycle that produces a whopping 33 HP and 17.4 ft-lb torque. Pretty crazy specs. My only experience with two strokes are 49cc scooters.

[Sir Osis of Liver]

Tuning two stroke motocross race bikes was the biggest challenge.  There were usually a few expansion chambers to work with, but then jetting was the big one that took time.  But, once you nailed it, look out, you had a very light bike with a lot of power.  While I enjoyed seat time on the big bore bikes, the 250s were more than enough for competing, my gawd they were fast.

The two stroke triple GT550 that I had was a pain to get sorted. It was a barn bike, so had been sitting for somewhere around 15 years when I got it. The carbs and linkages were really worn. The centre jet was fatter than the outboard ones to make sure the centre piston didn't end up cooked.

I think they were 32mm Keihins, not sure though.

[dkaz]

On a sad note, a Vancouver rider, CB500X owner and avid offroader I knew from a local group lost his life this morning in a collision with another motor vehicle.

News article was posted...

http://www.news1130.com/2017/02/23/vancouvers-first-fatal-crash-2017/

[Sir Osis of Liver]

Very sad. My condolences.

[rrocket]

Tuning two stroke motocross race bikes was the biggest challenge.  There were usually a few expansion chambers to work with, but then jetting was the big one that took time.  But, once you nailed it, look out, you had a very light bike with a lot of power.  While I enjoyed seat time on the big bore bikes, the 250s were more than enough for competing, my gawd they were fast.

I figured out early on a high power magnifying glass is your friend.  You could see tiny flecks of aluminum on the spark plug.  Later, it was easier as I got better.  Hi temp crayons striped on the champers and later I'd shoot a temp laser onto the pipes and know how close you were with the jetting.  After that, to really nail it down, I had CHT and EGT fittings to check for precise measurements.

Also...once you know how a 2 stroke is supposed to "feel", you have an idea of how the jetting is lacking and needs to be touched up.

[wing]

Hey so just left the motorcycle show in Montreal.

BMW 310R was pretty nice.....  Certainly felt more upscale than the cb300f  still I think the KTM 390 looks better actually.

The Rnine T though,  man so nice.   Tracy told me to buy one, ummm okay. 

Looked at everything sat on everything, and the octane still seems like the best out there in the cruisers and the R nine T really stood out for the naked bikes.

I loved the triumphs when I looked in the summer but when side by side with others was just meh.

The only thing I didn't like about the BMW beside the price was the pegs seemed too high so I felt cramped a little.

Tried the Honda rebel too, was very underwhelmed.

Rather the Vulcan S which is a 650 but looked better, seemed better built and way more comfortable.

[JacobBlack]

Yes!!! The RnineT is a BEAST.
Here's my review from a couple of years ago:
http://www.autotrader.ca/newsfeatures/20141001/test-ride-2014-bmw-r-ninet/

And high pegs mean better control, it's a good thing.

I wholeheartedly support your decision to buy one. Tracy is correct. But get the regular R NineT with the upside-down 42mm forks, not the "custom" stuff with the fancy doodads - they've cheaped out some of the main gear to make all those sexy styling tweaks and get the price down.

[wing]

Lol the pure yeah was the best feeling one.

My knees suck though so having them bent isn't really great.

[rrocket]

Yes!!! The RnineT is a BEAST.
Here's my review from a couple of years ago:
http://www.autotrader.ca/newsfeatures/20141001/test-ride-2014-bmw-r-ninet/

And high pegs mean better control, it's a good thing.

I wholeheartedly support your decision to buy one. Tracy is correct. But get the regular R NineT with the upside-down 42mm forks, not the "custom" stuff with the fancy doodads - they've cheaped out some of the main gear to make all those sexy styling tweaks and get the price down.

I've not ridden one, but your definition of "beast" is surely different from mine. 110hp from a bike weighing nearly 500lbs wasn't considered beastly even over a decade ago.

[johngenx]

Why is the RnineT so heavy?  500lbs?  Really?  And at over $16K, I'd probably spend the extra and pick up the 1290 Super Duke and get a stellar bike.

[JacobBlack]

220 kg isn't bad, especially when most of its in a boxer engine. They're not rocket ships, but they're beasts. Read the review, I explain it there.
Point is, they're awesome bikes to ride.

[rrocket]

220 kg isn't bad, especially when most of its in a boxer engine. They're not rocket ships, but they're beasts. Read the review, I explain it there.
Point is, they're awesome bikes to ride.

I did. Which is why I think our opinion differs on beast. I understand the retro styling is a "thing" these days opposing the other "thing"of ultra modern styling.

But did they have to go retro on the weight and (IMO) lacklustre performance from a nearly 1200cc engine?

For the money they are asking, I don't think it's unreasonable to want less mass and better engine performance for my money. And it isn't pretty enough for me to ignore those things.

I agree though...the torquey engine would be amusing.

[wing]

Tracy said to buy it, until she realized it was 16k.  At 10k or so she was all in.

I agree too much.  Add nice as the aluminum looks

[JacobBlack]

There are a pair of 2015s at BMW Toronto - wouldn't be surprised if you could snag one of those for 10K. I'll ride it up and deliver it for you.

[rrocket]

There are a pair of 2015s at BMW Toronto - wouldn't be surprised if you could snag one of those for 10K. I'll ride it up and deliver it for you.

It's a good idea....that price is where I'd be at.

I hate buying new too!