User Tag List
Thanks: 0
Likes: 0
Results 16 to 30 of 30
-
05-10-2013, 07:30 AM #16
-
05-10-2013, 07:49 AM #175000 RPM
- Join Date
- Apr 2006
- Location
- Belgium - near city of Ghent
- Posts
- 161
- Thanks (Given)
- 0
- Thanks (Received)
- 0
- Likes (Given)
- 0
- Likes (Received)
- 0
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
-
05-10-2013, 10:37 AM #186000 RPM
- Join Date
- Apr 2001
- Location
- Jackson,Tenn.
- Posts
- 1,691
- Thanks (Given)
- 0
- Thanks (Received)
- 0
- Likes (Given)
- 0
- Likes (Received)
- 4
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
I have been modifying Yamaha motors for 25 years now. There are a few that are still running with out being rebuilt for that long. They have been propped to turn 6000 or so. Some have had the limiter removed and been propped to turn 6400-6800 on those good days when light.
The limiter kicks in instantly when hooked up. In drag race form, turning 9000 or so is not unusual.
I don't know your Dutch friends, but I personally belive they are full of s**t and don't have a clue what they are talking about.
Belive what you want and who you want, but you have become insulting and demanding of people who do know and have tried to tell you what their experience relates. They are under no obligation to try to answer your questions.Ray Neudecker Over The Hill Gang Outboard Racing
-
05-10-2013, 11:02 AM #195000 RPM
- Join Date
- Apr 2006
- Location
- Belgium - near city of Ghent
- Posts
- 161
- Thanks (Given)
- 0
- Thanks (Received)
- 0
- Likes (Given)
- 0
- Likes (Received)
- 0
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
-
05-10-2013, 11:03 AM #20
-
05-10-2013, 11:30 AM #215000 RPM
- Join Date
- Apr 2006
- Location
- Belgium - near city of Ghent
- Posts
- 161
- Thanks (Given)
- 0
- Thanks (Received)
- 0
- Likes (Given)
- 0
- Likes (Received)
- 0
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
-
05-12-2013, 02:36 PM #22Markus' Performance Boating Links:
www.toastedmarshmallow.com/performance
-
05-12-2013, 08:53 PM #235000 RPM
- Join Date
- Apr 2013
- Location
- Canada
- Posts
- 511
- Thanks (Given)
- 2
- Thanks (Received)
- 1
- Likes (Given)
- 18
- Likes (Received)
- 25
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
-
05-28-2013, 10:35 AM #245000 RPM
- Join Date
- Apr 2006
- Location
- Belgium - near city of Ghent
- Posts
- 161
- Thanks (Given)
- 0
- Thanks (Received)
- 0
- Likes (Given)
- 0
- Likes (Received)
- 0
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
I found some more info on the riscs of overpropping your engine... seems to be worse compared to underpropping as there is no warning.
full load at too low rpm leads to detonation.
http://2strokeonly.com/Propellers.html (at the bottom "RPM vs PITCH")
-
05-28-2013, 12:39 PM #25
Drive the sh*t out of it I turned mine to 7000 too often and never was easy on it and it stayed together for five years of my foot not to mention it was used and on a hydrostream when I got it. So no tellin how it was treated prior to me getting it. And I ran Walmart oil mixed 50to1 and regular gas with ethanol
-
05-28-2013, 01:45 PM #265000 RPM
- Join Date
- Apr 2013
- Location
- Canada
- Posts
- 511
- Thanks (Given)
- 2
- Thanks (Received)
- 1
- Likes (Given)
- 18
- Likes (Received)
- 25
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
-
05-28-2013, 02:43 PM #276000 RPM
- Join Date
- Apr 2001
- Location
- Jackson,Tenn.
- Posts
- 1,691
- Thanks (Given)
- 0
- Thanks (Received)
- 0
- Likes (Given)
- 0
- Likes (Received)
- 4
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
The Excell does require premium fuel to stay off the knock sensor. Otherwise it cuts the timing way back to prevent detonation. Not a knock sensor on the 200 or Pro V 200 since the motor was not designed to need premium to live.
Ray Neudecker Over The Hill Gang Outboard Racing
-
05-28-2013, 04:30 PM #28
I have a Yamaha 200 on my Venus. When I prop it to run 6000, it actually runs better at all points throughout the rpm range. If I know I'm going on a long run, where I won't be running WFO for any extended period of time, I will prop it up a little to bring the cruise rpm down. I only do this with a light load. It helps with mileage.
I agree that loading the engine too much will drive it into detonation. I have a Laser II, 23 pitch that puts mine right at 6000, maybe 6100. The bottom end is great, it pulls skiers like a champ.
That Yamaha has been such a good runner that I'm thinking of pulling it and selling the boat without a motor. I really want to put it on a deck boat.
I would listen to the Yamaha guys on here. I have gotten a lot of really good info from them. Do what has worked for people who have "done", not from someone who has "heard".The Reverend, (Cedar Machine Service on Facebook)
1989 HST 2.5 260 Merc Offshore
1991 Vaserette YT 200 Mercury
1988 Venus XT 200 Yamaha
1983 Viper II Merc 90
1977 Viper
Mini GT tunnel, 25 Merc
"African Queen" pontoon 25 Merc
Aluma fishin tub, 20 motors to choose from!
GUESS WHAT?...I gotta fever,...and the only prescription...IS MORE COWBELL!!
-
05-30-2013, 05:57 AM #295000 RPM
- Join Date
- Apr 2006
- Location
- Belgium - near city of Ghent
- Posts
- 161
- Thanks (Given)
- 0
- Thanks (Received)
- 0
- Likes (Given)
- 0
- Likes (Received)
- 0
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
-
05-30-2013, 06:50 AM #305000 RPM
- Join Date
- Apr 2013
- Location
- Canada
- Posts
- 511
- Thanks (Given)
- 2
- Thanks (Received)
- 1
- Likes (Given)
- 18
- Likes (Received)
- 25
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)