|
|
Post by damin69 on Aug 4, 2011 15:00:40 GMT -6
|
|
|
|
Post by damin69 on Aug 4, 2011 11:20:35 GMT -6
Are the copper pipes getting hot at all? If not then perhaps you have a circulation issue; blockage or water pump. Side note, where did you find that clear fuel-safe (assuming it is) hose that you connected up to that fuel filter? I've been looking for that but can only find clear PVC. Fuel line from local Motorcycle shop. I got the clear from one shop and I got some that is clear/lt blue from another shop. Yes copper piping it getting hot. As far as actual Temps Do not know. BUt I do not remember the guage that is on there going that high last year before I did the rebuild. |
|
|
|
Post by damin69 on Aug 4, 2011 7:11:35 GMT -6
Well I did try this am. I feel there is something else going on with the cooling. Still only 10 miles and was running up to 3/4 so turned around and took back home. it was only 63 degrees so should have ran even cooler. This mod doubled the coolant and still running warmer than it should be. So that posses the question. What else could be causing this issue?
1 Is not Thermostat. Had problem with old one. Took out for testing warmed up and ran still ran warm with No Thermostat.
2. Added new Thermostat and Modded cooling copper radiator. Still runs warm after 10 miles of 55mph hiway speeds.
So where do I go from here?
|
|
|
|
Post by damin69 on Aug 3, 2011 19:06:30 GMT -6
Thanks for the write-up Damin. Do you think it's worth others investing their time to do this? The cooling impact didn't seem to be incredibly huge. Any plans for further tweaking? Yost. If I can get my but out of bed early enough I will run this scooter to work tomorrow. It will be about 65 in the am and about 83 in the afternoon on the way home. IF in these temps It can keep my temps below the Halfway point I will call this a success. I will let you know tomorrow. If it does not then I think there has to be other issue somewhere in the cooling system. |
|
|
|
Post by damin69 on Aug 2, 2011 7:19:07 GMT -6
There are several factors which can present this issue. You mentioned it had a straight pipe. Did the previous owner ride it this way? In carburetion, it could have been jetted for the straight pipe and sometimes, owners will drill holes in the airbox for more airflow. Inspect the airbox for any modifications. If compression was an issue, you would experience difficulty in starting and idling after warmup. Ignition can also be a culprit. The cdi may have an improper limitation. The rear drive clutch slipping at higher rpms could also be an issue. Never thought of CDI. I have had the air box off and re did the whole thing. He did run that way but do not believe there was any Rejet done as I have replaced the carb and have the same issue. Clutch slipping at Higher RPM if it was slipping at Higher RPM wouldn't that cause Higher RPMs making the motor rev higher? |
|
|
|
Post by damin69 on Aug 1, 2011 19:09:29 GMT -6
speed you and me both. Top end on this thing is WOT when cruising is 4800 sometimes its 5000 but that is it.
I picked up a Compression Tester today so This next weekend I will check the compression.
I think Fubar sold me a Fubar scoot. I have a funny feeling that I am going to have to do a top end rebuild on it. but will not know until I do the compression test.
|
|
|
|
Post by damin69 on Aug 1, 2011 18:43:19 GMT -6
|
|
|
|
Post by damin69 on Aug 1, 2011 18:09:26 GMT -6
I'm curious how you got all the air out of the system. I also was expecting better results from your mod. I was thinking about this and here are my thoughts: Opening the belly pan for additional ventilation for the copper tubes may have inadvertently robbed some of the cooling air from the main radiator. There is airflow to the radiator when the scoot is moving. The floor pan and the plastic hump above it form an air tunnel which directs air from the front to the radiator. Opening the floor pan allows too much air to bypass the main radiator. I would try blocking off the floor pan to see if there is an improvement. The ultimate setup would be a small oil cooler setup right behind the front grill while still using the tube setup you have in the belly pan. This would probably be real easy to hook up. Ok How I got the air out of the system. Lets see if I can explain it. I should have taken Pictures of the process but my hands were kinda full. I picked up one of these.  So I Hook the transfer pump to the Inlet by disconnecting the hose from the plastic filler and getting hose from the pump to fit snug so as not to introduce any extra air in the system. Then I pulled the hose of the water pump and made a make shift type funnel out of a water bottle so that I could see when coolant was coming up into it. The funnel was set up so that it was up above the radiator with the hose from the new copper piping so that the air could escape. That way when the air could come out and any fluid could fall back in without coming out the hose when pumping fluid in and not more bubbles come out and the fluid stabilized if figure the air is out of that part of system. Also I must note this took 2 people since when you pump fluid in the filler it can back feed through the water pump so I had to have my Thumb over the water pump inlet while my dad was pumping. Then I had a small pail to catch any extra fluid. I empty the little extra coolant out of the water bottle funnel take it off the end of the hose. Carefully and Quickly pull my thumb off the water pump and put the hose on the pump. Pull the transfer pump off the filler and put the plastic filler back on the filler tube and tighten down all the clamps. Then Top off and Warm up motor till all gets warmed up. Let it all cool down and check fluid. Did not have to add any Warmed up again just in case. Let it cool off again. Still did not have to add any coolant so figure I managed to get all the air purged from the system. Hope all that made sense. |
|
|
|
Post by damin69 on Aug 1, 2011 6:38:40 GMT -6
Todd this is extremely puzzling? have you done a compression test on this scooter? this is starting to get crazy! JR JR, That is pretty much the only thing I have not done. I just told my dad when we got back from our Test trip to Madison. I need to check the compression. May be to Top end Rebuild if compression is shot. |
|
|
|
Post by damin69 on Aug 1, 2011 4:54:25 GMT -6
let off the gas slow see if it picks up check the plug to see if to rich or lean It used to pick up if you let off the throttle a little bit. |
|
|
|
Post by damin69 on Jul 31, 2011 20:48:05 GMT -6
There's nothing wrong in the exhaust pipe is there? No dents or clogs? I've lost top end when the pipe was clogged. kz, When I bought this scooter the guy I bought it from had a strait pipe on it. Before I even ran it I bought a new muffler and manifold pipe from Scooter Dynasty. I have been trying to get top end out of this thing since I got it. |
|
|
|
Post by damin69 on Jul 31, 2011 19:15:36 GMT -6
Speed I have tried Diff Sliders and Rollers. I can not get it over 4800 rmps on the road. On the stand it will rev over 7000
|
|
|
|
Post by damin69 on Jul 31, 2011 9:27:56 GMT -6
Yes. This the new carb gave me exactly the same results the original carb gave me.
|
|
|
|
Post by damin69 on Jul 30, 2011 22:32:12 GMT -6
Ok so I have done everything I can think of with this scooter. We took both of my scooters out today for test running my Cooling mod. We ran over 100 miles today and we were never able to get this thing over 55mph unless we were going down hill with a TAIL wind.
So I redid valve adjustment from all the reading that made the most sense. WRONG. This thing runs perfect at IDLE and Up to 45mph. Take off is super strong Never any hesitation. But man it is a super DOG no top end I am lucky if I can hold 55mph IT WILL not go over 55 and this thing should pull 70 plus easy. I just do not know what else to do with this thing.
|
|
|
|
Post by damin69 on Jul 30, 2011 22:23:52 GMT -6
Well So today was like 90 degrees. Good test run. Well results were NOT what I really would like to see. It does seem to run cooler but still not what I would consider cool enough. Running 5300 rpms at 55mph for about 30 miles temps climbed up to between the 3/4 and the hot and pretty much sat there while running. So backed off to about 4500 rpms running between 45 and 50mph temps stayed between 1/2 and 3/4 on the gauge. Way home was down to 81 degrees out was able to run 55mph the temps stayed just about 3/4. When Running 40mph the temps stayed below 1/2.
I was hoping to have the temps stay below 1/2 all the time.
|
|
From the other side of the copper cooler measure and cut 1/2" radiator hose to fit roughly 18". 
