Inexpensive Aero 80 performance enhancement

Aero 50, Aero 80, Elite 50, Elite, Elite SR/LX, Elite 80, Gyro, Spree, Dio, Ruckus, Metro/Jazz and the 108cc Elite
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Bear 45/70
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Re: Inexpensive Aero 80 performance enhancement

Post by Bear 45/70 »

Well did you get the swap done and the ride in? So what happened?
Bear 45/70

'83 Aero 80
'83 Aero 80
'84 Aero 80
'84 Aero 80

'85 Aero 80
'84 Aero 125
'84 Aero 125
'84 Aero 125
'84 Aero 125
'84 Aero 125
'85 Aero 50
'85 Spree
brivander
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Re: Inexpensive Aero 80 performance enhancement

Post by brivander »

Bear 45/70 wrote: Thu Apr 02, 2020 9:58 pm Well did you get the swap done and the ride in? So what happened?
It’s done, I finished it up this evening. Letting the permatex ultra gray dry overnight. I’ll post up tomorrow.
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Re: Inexpensive Aero 80 performance enhancement

Post by brivander »

Ok, got the reeds in, and took it out today.

Results in summary, these are a bargain! Definitely improved the midrange, and improved the flat spot when the bike transition from shifting variator to locked straight ratio. I had already changed to the #90 jet and the temp runs within 5-degrees of what it did before. Also did a plug chop after a 3-mile wide open run and the plugs looks good but maybe a touch rich. I may try the #88 jet again (note that I was a needle clip up one notch).

GPS went from initial run of 46.7 to 48.1 Not a huge change in top speed, but the acceleration is significantly improved.

Bike started out right around 43.5mph GPS. The 4.0-10 tire and the reeds are the easiest mods for this bike imo.
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Bear 45/70
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Re: Inexpensive Aero 80 performance enhancement

Post by Bear 45/70 »

Like I said, "When I used them they were good." And I still believe it for the dollars spent.
Bear 45/70

'83 Aero 80
'83 Aero 80
'84 Aero 80
'84 Aero 80

'85 Aero 80
'84 Aero 125
'84 Aero 125
'84 Aero 125
'84 Aero 125
'84 Aero 125
'85 Aero 50
'85 Spree
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Re: Inexpensive Aero 80 performance enhancement

Post by brivander »

The overall drivability is just better. Getting this in the upper 40’s will keep the assholes of my tail for the most part in 45mph zones. This is a good thing. I love this bike, unlike all my 50’s it doesn’t even feel like it’s trying.
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Bear 45/70
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Re: Inexpensive Aero 80 performance enhancement

Post by Bear 45/70 »

Like I said they were well worth the money back before I upgrade to a big carb and ported the engine.
Bear 45/70

'83 Aero 80
'83 Aero 80
'84 Aero 80
'84 Aero 80

'85 Aero 80
'84 Aero 125
'84 Aero 125
'84 Aero 125
'84 Aero 125
'84 Aero 125
'85 Aero 50
'85 Spree
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Re: Inexpensive Aero 80 performance enhancement

Post by brivander »

Bear 45/70 wrote: Wed Apr 08, 2020 1:46 pm Like I said they were well worth the money back before I upgrade to a big carb and ported the engine.
I agree completely.

Only thing else I’m going to try are +1000 springs from a Yamaha Jog, they are the same size, but not sure if 1000 will really be 1000. I have a tach to measure when the clutch engages stock and with the 1000’s. I also have 1500’s. Just need to make sure I get the highest rpm launch without the variator actually starting to shift. I’ll do all of it with the side cover off and get some video.
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Re: Inexpensive Aero 80 performance enhancement

Post by Bear 45/70 »

So have you tried the springs yet?
Bear 45/70

'83 Aero 80
'83 Aero 80
'84 Aero 80
'84 Aero 80

'85 Aero 80
'84 Aero 125
'84 Aero 125
'84 Aero 125
'84 Aero 125
'84 Aero 125
'85 Aero 50
'85 Spree
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Re: Inexpensive Aero 80 performance enhancement

Post by brivander »

No not yet, we have had nice weather so the fam and I have been out riding.
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Re: Inexpensive Aero 80 performance enhancement

Post by brivander »

Bear 45/70 wrote: Sun Apr 12, 2020 1:59 am So have you tried the springs yet?
Ok, so I got to the springs today. Pulled it apart and the stock spring are clearly stiffer than 1000 or 1500 Leo Vince Jog Springs, that have 2 less coils and thicker wire diameter. Obviously those won’t help at all.

On a brighter note they are the exact length as a stock.
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Bear 45/70
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Re: Inexpensive Aero 80 performance enhancement

Post by Bear 45/70 »

Actually they probably would as they would delay the variator actuation being stiffer springs.
Bear 45/70

'83 Aero 80
'83 Aero 80
'84 Aero 80
'84 Aero 80

'85 Aero 80
'84 Aero 125
'84 Aero 125
'84 Aero 125
'84 Aero 125
'84 Aero 125
'85 Aero 50
'85 Spree
brivander
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Re: Inexpensive Aero 80 performance enhancement

Post by brivander »

Bear 45/70 wrote: Wed Apr 15, 2020 2:00 pm Actually they probably would as they would delay the variator actuation being stiffer springs.
Not sure what you mean.

The Jog Springs, even the 1000 and 1500 springs, were significantly softer than the stock Aero 80 springs. My guess is the clutches would have engaged at idle.
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Bear 45/70
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Re: Inexpensive Aero 80 performance enhancement

Post by Bear 45/70 »

You need to try them to see what they do. Just looking never got anybody anything.
Bear 45/70

'83 Aero 80
'83 Aero 80
'84 Aero 80
'84 Aero 80

'85 Aero 80
'84 Aero 125
'84 Aero 125
'84 Aero 125
'84 Aero 125
'84 Aero 125
'85 Aero 50
'85 Spree
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Re: Inexpensive Aero 80 performance enhancement

Post by Viperboy »

brivander wrote: Wed Apr 15, 2020 3:40 pm
Bear 45/70 wrote: Wed Apr 15, 2020 2:00 pm Actually they probably would as they would delay the variator actuation being stiffer springs.
Not sure what you mean.

The Jog Springs, even the 1000 and 1500 springs, were significantly softer than the stock Aero 80 springs. My guess is the clutches would have engaged at idle.
Brivander check your PM
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Re: Inexpensive Aero 80 performance enhancement

Post by Soloked »

Hey I'm new to the forums and have a new 85 areo 80.
I got into my transmission because I know someone before me had done some messing with the tuning and wanted to check it out plus I had a gear case oil leak.
I replaced the gear case gasket and refilled the oil. I found my contra spring was a yellow spring someone hacked off to make fit. I also found the stock clutch springs are pretty small. Smaller than most out there with only five coils. I will attach a pic or two. I put on a purple Malossi contra spring and am awaiting a new 107mm clutch that I can put larger Malossi springs on so clutch engages a little later. So far the purple contra works well with the 8g weights I have. I also ordered 10g and 12g weights since I read stock is maybe 16g?
Hopefully the $20 ebay clutch will fit the bell and take the Malossi springs. I will post when I get it.
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