1
Grandvista 250 / Re: 250 Grandvista top speed issue
« on: August 13, 2013, 01:21:31 AM »
check engine compression. Lot's of opinions on this forum. enjoy the feedback. It's good to have toys.
Show Posts
This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
Pages: [1]
2
Grandvista 250 / Re: Maintenance tips - sliders vs rollers, valve adjust, new tires
« on: August 11, 2013, 02:08:14 PM »
I put the same weight sliders, I read about putting in 18 to 22 but decided 20 gm was a good starting point. I'm really just looking for reliability.
My valves were set at the 0.1mm setting recommended and it was too loose. I realized that I could have been interpreted as giving bad advice here - just my experience. It runs better than ever at this setting and the settings came from reading the forums here and other places. I just spent another 80 miles on it this morning and at pretty close to WOT and 80 degrees, the engine ran cool and very well. I do appreciate the advice and will keep an eye/ear open for signs of trouble. I will fix my entry if I can. Good catch.
the 80 is down hill with no wind. However the flat out max speed is around 75 and stays that way up most hills. There is not as much speed loss that I was seeing with a belt that had 9500 miles and the rollers.
I will say that the belt I removed was still in spec and looked very good. When I removed the casing, my drive area was clean except for a slight amount of rubber dust, nothing like the guy that had his belt shredded. (another recent forum entry)
My valves were set at the 0.1mm setting recommended and it was too loose. I realized that I could have been interpreted as giving bad advice here - just my experience. It runs better than ever at this setting and the settings came from reading the forums here and other places. I just spent another 80 miles on it this morning and at pretty close to WOT and 80 degrees, the engine ran cool and very well. I do appreciate the advice and will keep an eye/ear open for signs of trouble. I will fix my entry if I can. Good catch.
the 80 is down hill with no wind. However the flat out max speed is around 75 and stays that way up most hills. There is not as much speed loss that I was seeing with a belt that had 9500 miles and the rollers.
I will say that the belt I removed was still in spec and looked very good. When I removed the casing, my drive area was clean except for a slight amount of rubber dust, nothing like the guy that had his belt shredded. (another recent forum entry)
3
Grandvista 250 / Maintenance tips - sliders vs rollers, valve adjust, new tires
« on: August 11, 2013, 02:04:40 AM »
I went to go ride last week and realized my rear tire was worn through to the threads. So, I went to the local motorcycle shop but was told, "they don't work on scooters."
It gave me another opportunity to play with the scooter. In doing so, I learned a few things that I thought I would pass on.
I replaced my tires with Michelin Pure SC's from Amazon.com I spent $115.00 to purchase them and took them out of town to have them mounted/balanced to the wheels. ($50.00)
To remove the wheels was extremely easy. Took about 1 hour to remove them and another hour to put them back on. (would take less time if I didn't read each step of the way to make sure I was doing it correctly.) They ride and look great. It fixed a bounce I was getting at deceleration with the old front tire.
While I had it apart, I set the valve clearance.I had a tick and realized that it was set at 0.03inch instead of 0.03 mm. After reading other forums I decided to go with a thiner gap and gapped my valves to 0.03mm. This fixed the ticking and it runs better. Thank you for those that posted videos on you tube on how to do this. It is really very easy, also described well in the users shop manual, also downloaded from a forum posting. Easy to find, A great tool.
I also replaced the belt and rollers. I went with motorscooterparts.com and was very happy with their service. The parts arrived quickly and as promised. I ordered the 1 O15-2286 - 894-23-28 Kevlar Belt - Gates Powerlink 50.99 and 1 U72-1787 - 23x18 Dr. Pulley Sliding Roller Weights 44.49. Very easy to install.
My scooter is well maintained as far as oil, I used to have it serviced by a scooter mechanic that is no longer in business. It has 9500 miles on it.
Also changed the oil, I elected to use 10W40. only 1 liter needed. Also very easy.
Running it today for a 100 mile trip: I have a GPS measured top speed of 80 (speedometer reads 87), up from 75. The acceleration is better, and it runs very smoothly. It's nice when everything works the first time.
Happy scooting.
It gave me another opportunity to play with the scooter. In doing so, I learned a few things that I thought I would pass on.
I replaced my tires with Michelin Pure SC's from Amazon.com I spent $115.00 to purchase them and took them out of town to have them mounted/balanced to the wheels. ($50.00)
To remove the wheels was extremely easy. Took about 1 hour to remove them and another hour to put them back on. (would take less time if I didn't read each step of the way to make sure I was doing it correctly.) They ride and look great. It fixed a bounce I was getting at deceleration with the old front tire.
While I had it apart, I set the valve clearance.
I also replaced the belt and rollers. I went with motorscooterparts.com and was very happy with their service. The parts arrived quickly and as promised. I ordered the 1 O15-2286 - 894-23-28 Kevlar Belt - Gates Powerlink 50.99 and 1 U72-1787 - 23x18 Dr. Pulley Sliding Roller Weights 44.49. Very easy to install.
My scooter is well maintained as far as oil, I used to have it serviced by a scooter mechanic that is no longer in business. It has 9500 miles on it.
Also changed the oil, I elected to use 10W40. only 1 liter needed. Also very easy.
Running it today for a 100 mile trip: I have a GPS measured top speed of 80 (speedometer reads 87), up from 75. The acceleration is better, and it runs very smoothly. It's nice when everything works the first time.
Happy scooting.
4
Grandvista 250 / Re: Faulty Muffler?
« on: August 28, 2011, 12:03:59 AM »
How do you enrich the idle system?
I too have a backfire that probably ruined my 10 year old muffler (or at least contributed to it's demise.) Now that I have a performance muffler, the backfire, which I do believe is exhaust detonation, is much more prominent. The air filters, spark plug... are all good. I am now wanting to turn the pilot screw which I believe will change the low idle mixture??? The question is, Is this correct and if so, which way does anyone think it should be turned?
My guess is right (tighten) to cause a more rich mixture.
I too have a backfire that probably ruined my 10 year old muffler (or at least contributed to it's demise.) Now that I have a performance muffler, the backfire, which I do believe is exhaust detonation, is much more prominent. The air filters, spark plug... are all good. I am now wanting to turn the pilot screw which I believe will change the low idle mixture??? The question is, Is this correct and if so, which way does anyone think it should be turned?
My guess is right (tighten) to cause a more rich mixture.
5
Grandvista 250 / Re: Interstate Vibrations
« on: July 29, 2008, 12:27:56 AM »
I agree, my speedometer reads 90 at close to top speed, I think it really only goes around 80 mph. Very stable and does not get much push from 18 wheelers. No vibration. A two hour ride is a ver :)y comfortible ride.
6
Grandvista 250 / Re: Are there any mods for GrandVista seat?
« on: July 29, 2008, 12:22:41 AM »
I was going to remove the backrest from mine tonight. I was wondering if anyone had tried it to give themselves more room. I also ordered the taller windshield tonight. I have owned the GV250 for 3 months now. I really believe it rides nice. Great for 60 mile trips. But, the seat is hard on my back and sits me up too high for long trips. I am 5'6". I have had a Honda 250 scooter. It is just as good of quality as the Honda. It appears to be as well built. I have over 3000 miles on it now and it has always run well.
I know there is another seat. It looks deeper with a higher backrest. Anyone tried this seat? It runs around $200.00.
Follow-up to removing backrest. Not worth the hastle. It needs the backrest or it looks bad and does not add much comfort. Love the GIVI windshield. Worth every penny. Slows the motorcycle down about 5 mph at top speed.
I know there is another seat. It looks deeper with a higher backrest. Anyone tried this seat? It runs around $200.00.
Follow-up to removing backrest. Not worth the hastle. It needs the backrest or it looks bad and does not add much comfort. Love the GIVI windshield. Worth every penny. Slows the motorcycle down about 5 mph at top speed.
7
Grandvista 250 / New Owner - with small problem - Speedometer reads too fast
« on: June 04, 2008, 12:26:24 AM »
I am the new owner of a GV 250. Love the motorcycle but when I was on the road I was getting passed too often. Took a GPS for a ride tonight and discovered that when the speedometer read 70 mph I was going 60. 64/55 35/30. The speedometer was pretty much 20% too fast (I think that is said correctly). Does anyone know how to fix?
Brad
Brad
Pages: [1]