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Post by bigtex on Feb 14, 2011 15:40:32 GMT -5
Hi - I'm new here. I have the oppty. to buy a 1984 Aero 125 with just a little under 2500 miles on it. Does not appear to ever be on it's side. Mostly all original including tires. Everything works. I think I can buy it for $800. First off, would this be a good deal? I'd at least like to be able to get my $$ back out of it if I decide it's not for me. Secondly, I'm told it has a 55mph top speed. Is there much room for performance improvements? I ride 2-stroke dirt bikes and there's always room for significant improvement in those bikes. Is that also true with these scooters? Many thanks for your input/feedback.
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Post by bear4570 on Feb 14, 2011 16:07:59 GMT -5
The price is at the high end of normal but if it is all there and runs, then it is up to you.
Yes, the is room for major improvement, Honda restricts the top speed with not enough carb. The bigger intake and carb are about $170 but unfortunately you need a custom adapter that is not sold commercially. I may have a source to get them made but at this point, no cost is known. I the name of full disclosure, the Aero 125 was only sold 1 year here in the USA, but for 4 years in the rest of the world, so parts can be a waiting game or searching Europe and the rest of the world.
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Post by bigtex on Mar 9, 2011 0:46:36 GMT -5
Many thanks. I ended up getting it for free....well not really! I traded a few firearms I didn't use anymore. I'm very impressed so far. I took it apart and cleaned the carb, installed a new air filter, put in a new plug. The thing runs really solid. Looks like it will hit about 50, maybe 55 downhill. But it gets there pretty fast and smooth. A lot of fun to ride too! Everything works too! I'm very curious about how much impact the carb and intake would make. I'd spend $170 for a decent improvement in performance. Keep me posted on that. I'm going to try and attach a pic of the scoot..... Attachments:
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Post by bigtex on Mar 9, 2011 0:49:46 GMT -5
BTW - The 3 things it's missing is: front left plastic cover on fork (but it's ordered and should be here Friday), and the two "spoilers" that apparently mount to the front facia on each side...it looks like there are two small screw holes for mounting, but they must have been removed.....There's no damage around that area. Any idea where I can find the spoilers? Thanks. Oh, and here's a few more pics. And it only had 1100 miles on it!! Attachments:
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Post by bigtex on Mar 9, 2011 0:50:26 GMT -5
another pic Attachments:
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Post by bigtex on Mar 9, 2011 0:53:13 GMT -5
Also, when I first rebuilt the carb, it was leaking around the float bowl, so I took it back apart and put some special "gas friendly" sealant on it. No more leaks! I also decided to replace the inline fuel filter and while I was there, I retrofitted an on/off valve under the seat. Not sure why Honda didn't put a petcock on these scooters....I'm so used to turning them on/off on my dirt bikes! Anyway, I'm kinda glad I added it given the terrible gas we have to buy these days....hopefully I'll never have another carb problem since this will allow me to keep the carb "dry". Attachments:
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Post by bear4570 on Mar 10, 2011 2:49:16 GMT -5
Spoilers are NLA (No Longer Available). I do have a new spare set but I am clinging to them for dear life because with 3 Aero 125 scooters I'm sure to need them.
You should not be using sealers on the carb float bowl. Replace the "O" ring. The sealant has a bad habit of landing "in" the float bowl and ending up plugging a jet.
The valve with the two lines under the fuel tank is a petcock, an automatic one designed to shut off fuel flow when the engine is not running. Vacuum in the intake manifold turns the fuel on. The petcock for the Aero 125 is available from Honda for about $45 (I bought on this last summer).
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Post by bigtex on Mar 10, 2011 21:02:05 GMT -5
Thanks for the info. I'll probably order the o-ring and install it next time I'm doing maint. The sealer I used was specific to coming into contact with gas so hopefully it won't deteriorate and get in the bowl! Didn't know that about the factory petcock....all I know is that gas continued to run out of the bowl for at least a week in my garage so maybe the oem petcock was not sealing all the way?? In any case, the manual cut off petcock I installed works great and I can be assured that no gas flow continues after the scooter is off. Not sure I need the spoilers, but if I run across a set I may pick them up. The scooter is now 100% complete and original minus these two little spoilers. Although I didn't buy it for collectability, but to have fun on it!! I also decided to run 1/2 race gas and 1/2 93 octane to see if that might pep it up a bit and/or to just help clean out the cylinder with the extra octane. I know my prior 2 stroke dirt bikes always ran better on 108 octane.
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Post by bear4570 on Mar 11, 2011 21:05:19 GMT -5
The petcock is bad on one of my Aero 80s and one of mt Aero 125s. However the needle and seat work fine so there is no fuel on the floor at this time.
The engine has less the 7 to 1 compression ratio (6.7 to 1 per the spec sheet). To even need 93 octane you need at least 9.0 to 1 compression. So save your money, all the higher octane fuel does is prevent detonation, caused by higher compression that does not exist here . It will not make your scooter more powerful or faster. Dirt bikes have much higher compression than these lowly street scooters. Regular will work fine.
The spoilers are cosmetic only.
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Post by bigtex on Mar 11, 2011 23:42:40 GMT -5
Thanks for the info. on the fuel. I'll just run 87 octane in the future. Is there an easy way to determine if the oil injector is working properly? I've only run the scooter about 10 minutes or so, but did not see a drop in the oil level (it's full to the top) in the oil tank. Maybe it takes more time for the oil level to go down?? I'd actually prefer to pre-mix my fuel (Just old school and used to it) but not sure how to seal off the oil pump if I were to do that. I know for some 2-stroke ATV's they make a block-off kit, but I doubt they have one for this scooter. Any other ideas??
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Post by bear4570 on Mar 12, 2011 14:46:13 GMT -5
You won't see a drop in 10 minutes. If you are worried about the pump , top off the oil tank, add a 50 to 1 premix to the tank and run a tank or two thru the motor. If the oil level drops, you are golden. These thing get an average of 50 to 60 miles per gallon, at idle they are using very little oil. The oil pump output adjusts depending on your throttle setting, that's what the cable going to the oil pump does. At idle with no load, probably less than 100 to 1, at WOT probably about 50 to 1. If you want to burn more oil, just wire the pump at the WOT position. But the reason oil injection is so good is it keep the waste of oil down, hence less smoke and expense. Oh and less fouling of the spark plug.
For the pump disabling thing see your other post.
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