Low end throttling

Doggus · Active Member

One disappointing feature of this bike for me is the herky-jerky throttle at ~20-25mph. This happens especially when trying to navigate a left/right turn lane. Of course it does not do it if you are getting on the throttle, I'm talking about trying to maintain a constant throttle at low speed or even slight deceleration.

I DO NOT like to take corners at speed on this thing. I feel like I'm one gravel stone, slick spot, wet painted stripe from low-siding this thing. Therefore I creep around corners all the time. Not sure what it is about the scoot. I will take my racing bike (see avatar) around the same corner approaching speeds of 30-35 and not think anything of it.

One reason I bought the scoot was to team motorpace, i.e. scoot breaks the wind at 30+mph while 2-3 bikes (see avatar) paceline for 25-50 miles. However, the low-end throttling on this bike is a problem. The motorpace has to be extremely smooth, as motorpacing requires the bikes to be inches apart at speed.

Is there anyway to correct this low end issue? I don't care if it takes off some of the top-end speed as I don't care to go over 65 on this thing anyway.

Do aftermarket rollers help with this?

West of the Cascades · MajestyUSA Supporter

What year is your Majesty and how many miles do you have on it?
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2007 Majesty - Blue
Magellan Crossover 2500 T GPS
Cobra RoadTrip CB radio
Yamahauler Sticker
Suzuki Maurader 800

Drsam44 · MajestyUSA Supporter

I haven't experienced this and I also creep around turns and for the same reasons. You may have injector problems when operating on the low end.

Just a guess...

Drsam
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2007 Blue Majesty
Mike's Mirror Extenders
Side Deflectors
Nelson Rigg CL-850 Touring Deluxe Saddlebags

niksfree · Super Poster

Hi the problem your experiencing is caused by the design of the standard variator and clutch set up of the scoot. it needs to have over 4,000 rpm to engage pulley fully.
To fix this problem you can change the variator for a performance unit such as Polini or Malosi.

I solved this problem on my majesty 250 now 300cc scoot by fitting the following combination from DR. PULLEY.

Dr. Pulley sliders mixed 11 grm and 13 grm 50/50
Installed a Dr. Pulley clutch and a Kevlar belt.

Result was full control of speed across the full rev spectrum (would meet your needs) with outstanding acceleration and higher top end speed with decreased revs once settled down to cruise found slight increase in fuel economy with my particular setup as i was not after GT type acceleration what i have now leaves harleys and tin tops for dead.
If there is any interest i will post a full report on this modification.
Bang for buck you cannot go past the Dr. Pulley set up as you can fine tune to your requirements by either varying the slider weights and/or springs or pillow fitting on the clutch.

The Yamaha dealer was given a test ride on my bike and his comment was it felt like he was riding a 400cc bike instead of a 250 fitted with big bore kit to make it 300cc. he was impressed and now wants to be a Dr. Pulley agent.which will make things easier for us Aussies. Cool

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Majesty 250, 2006 (now 300cc)
Dr. Pulley sliders, variator and clutch
mirror extenders,
side wind deflectors
indicator buzzers
air hawk medium seat cushion
12v outlet in glovebox
Yamaha touring screen

ax1464 · Turbo Poster

Yeah, this is one of the relatively few annoyances of my 2008 Majesty. At certain road speeds and engine rpms the throttle response can be quite abrupt, making small adjustments pretty much impossible. You go from not enough power to too much.

My Majesty has always done this, as did my BMW and numerous other cycles I've ridden. Many, many road tests I've read over the years list "abrupt throttle response" as one of the particular bike's negative traits.
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vanc · MajestyUSA Supporter

You can dampen the response by applying the rear brake a bit as you give it extra throttle, and then ease out the brake while holding the throttle steady. Takes some practice though.

As for cornering, even with stock tires the bike will lean over enough to scrape the kickstands. Try lowering the bike onto it's side and see how far it goes until the stands touch to get a feel for how far that is. It's further than most people would be comfortable! I have found that it requires more countersteer input than my previous bike, and far more than my bicycles (which hardly need concious countersteering at all). Some parking lot experimentation with slow, tight circles gave me more confidence in the tires.

bigwheelsturning · MajestyUSA Supporter

Go take a "basic rider coarse" from you local Motorcycle Safety Foundation, their nation phone number is 1-800-446-9227 You need to learn how to ride a scoot, and they can teach you how. From starting and stopping, to applying a bit of throttle "in" the turn to settle the scoot into it's line.

Every one should take the class, and read any of David Hough's safe riding books! wav

jgalar · Turbo Poster

I do the same as Vanc above - feather the rear brake and a little throttle on to keep the clutch from disengaging around 20mph.

gruntled · Turbo Poster

There was some discussion awhile back about what grade of gasoline to use. I have always used the lowest grade in all my cars & motorcycles so I decided to do a test to prove to myself that it didn't make any difference.
I would try a couple of tank fulls of the medium grade to see if I could tell the difference & then I could post that it didn't.
It didn't turn out that way. There was a small boost in mileage that almost covered the price difference & a noticeable inprovement in low speed performance.
You might not get the same results but at ten cents a gallon for 3 1/2 gallons it is a cheap enough test.

niksfree · Super Poster

gruntled · Turbo Poster

I simply noted that I have experienced better engine responce at low throttle settings. I had not expected it & in fact would have argued against it if I hadn't tried it. I had also expected that gas mileage might drop a small amount. The results weren't what I had expected so now I am stuck buying the more expensive gasoline but the poor acceleration from a dead stop that had bothered me is much improved. It doesn't match my motorcycle but then the engine is much smaller & it is an automatic.

niksfree · Super Poster