|
|
Post by stepthrutuner on Sept 10, 2012 21:29:03 GMT -5
I remember back in the 70's a bunch of desert racers were always raving about running 100:1 ratios while competing in the Baja 1000!  My understanding is that desert racers run pretty rich (fuel) due to holding the throttle open for long periods of time. Since there's more fuel there's more there's more oil too. Maybe that's why they could get away with it. |
|
|
|
Post by 190mech on Sept 11, 2012 4:35:29 GMT -5
That might just be the reason,Reg..Guess carbon build up would be less too...
|
|
|
|
Post by palezu on Sept 11, 2012 15:34:07 GMT -5
Talking about the front pulley spacing to get better launch, I tried to put spacers between the boss and the fixed face but then the kick starter gear will hit and interfere with the opposing crown washer and it will jam the kick starter and crankshaft. Does the kick starter mech need to be modified or am I having the kick starter assembled somehow wrong when I can't put more spacers in than the original small one?
|
|
|
|
Post by 90GTVert on Sept 11, 2012 16:00:48 GMT -5
I've never had to do anything with the kickstart. I can fit a couple mm with the stocker on mine and prob 3-4mm with the Hoca before I start having problems.
|
|
|
|
Post by kevin55950 on Sept 11, 2012 16:49:36 GMT -5
There is some scooters, like the Kymco 2T ( ''horizontal'' engine) that has very narrow space between kickstart gear and crown washer. I installed a Polini variator on one of them and I haved to cut 1mm of the variator boss drive to make it work.
|
|
|
|
Post by 90GTVert on Sept 11, 2012 21:27:37 GMT -5
|
|
|
|
Post by stepthrutuner on Sept 11, 2012 21:37:51 GMT -5
Nice calming pics.
|
|
theo547
Scoot Enthusiast
Posts: 497
|
Post by theo547 on Sept 11, 2012 21:44:14 GMT -5
cant wait to see how 100:1 works... or fails... make sure you wearing your helmet cam when you start getting into those runs... if only to hear you swear if\when it fails... or scream success when you get your hundred miles out of it  |
|
|
|
Post by 90GTVert on Sept 11, 2012 22:00:03 GMT -5
I've had the GoPro on the scoot on both rides so far. Prob is, it doesn't really work anywhere near dark. The 80 - 100:1 rides will be stressful, because I'll be expecting to breakdown at any moment. lol
|
|
|
|
Post by 90GTVert on Sept 12, 2012 22:44:20 GMT -5
Made it through 99.76 miles on 80:1 tonight. Had the truck follow me for the first 10 miles, just in case. lol
Had a close call with a deer and a car at the same time. It was about 11PM and I was riding on the shoulder, doing low 40s. There was a car coming up behind me, so I let off and slowed a bit. I saw a deer in the grass, just off of the shoulder and hit my brakes and tapped them to flash the brake light. The car never slowed down. The deer started running along the shoulder in the same direction of travel as the car and I. Just as I got passed the deer he ran out and hit the car that was right behind me in the regular lane of travel, just about to pass me. It was close. I dunno about inches, but feet at least. The car, a newer Volvo wagon, tapped it's brakes and then accelerated away quickly. :scared:
|
|
|
|
Post by 2strokd on Sept 13, 2012 7:50:16 GMT -5
What a ride man!
80:1 huh? Sawweeet! If it lasts, you should save some money on oil buddy.
|
|
|
|
Post by 90GTVert on Sept 13, 2012 11:58:08 GMT -5
Not a chance in hell you'll catch me at 80:1 unless they invent a new oil. Again, I'm waiting on pics till I get it all together. I've got a bunch to go through already and it takes me about 4 hours a day to disassemble, take pics, clean up, take pics, reassemble. Then at at average of around 31-32MPH (cruise speeds 40-45), it takes 3 hours to do 100 miles, plus a couple of fill ups. Add in getting the gas to fill the tank with the new mix etc... and it's about 8hrs a day just to ride 100 miles. With the other stuff I have to do, pics will need to wait. I know, I know. I put up sunset pics, nothing useful. That's cause I don't need to sort through them or anything, I just tossed 'em up.
I will say though that at 80:1 I saw marks on all 4 corners when I tore it down today. Makes me feel great about trying 100:1. It also seems as if RPM/power dropped a little. Temps are over 340 on all setups, which is my gauge's max. I left the timing advanced at 20 degrees to make the 49cc less annoying to me for so many miles. That's just enough to put the temp off of the gauge. From what I can tell, I'm not seeing any big difference in temps, just judging by in town when it's cooler and how long it takes to heat/cool to where it sits, and things like that. If there's a big swing in temp from here, it'll prob be accompanied by a seize anyway.
The ped guys can keep the 100:1. More power to them if it works. I think the better way to save money, at least for people like me running expensive oils, may be to use a different oil and mix more in. I do have some Havoline TCW3 here. May or may not try it too. Depends if 100:1 ends up messing anything up. Can't remember what I paid for it a little while back, but I know it's not expensive as 2T oils go.
|
|
|
|
Post by stepthrutuner on Sept 13, 2012 13:25:39 GMT -5
I used Havoline TCW3 for a couple of years until the local Freds stopped selling it in quarts. A couple of years ago I was paying 2.99/qt. I bought a gallon of Wal Mart Super Tech after that and finally used it all up a couple of months ago. I could not find it at all last time I checked at Wal Mart so I bought Mercury Quicksilver for air and water cooled two strokes.
|
|
|
|
Post by 90GTVert on Sept 13, 2012 14:01:48 GMT -5
|
|
|
|
Post by 90GTVert on Sept 13, 2012 22:58:52 GMT -5
I made it home after 100.05 miles on 100:1. I came home at about 50 miles in. It had started bogging when the CVT shifted. There's been a bit of an RPM drop with less oil, so I wasn't sure if that was causing the bog or something else. I cleaned the whole CVT, and found that the bearing in the rear pulley was bad and replaced it. Then the shift was fine, but the RPM was still lower. Now I'm not really sure if the RPM drop is something CVT related, oil related, or from all of the rebuilds. It's something like 2-300RPM difference from highest to lowest.
|
|
