MNSBR: 2001 Aprilia RS50 (now 86cc), $2000 - MNSBR

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2001 Aprilia RS50 (now 86cc), $2000 Can do 90mph and 90mpg (not at the same time)

#1 User is offline   Kent Larson Icon

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Posted 17 July 2018 - 10:59 AM

It is a fun little bike but I find I don't ride it anymore (ST1300 is needed to carry all the tools) and the rest of the family has no interest. So, I guess I should get serious about moving it on to another owner. I'm sure I can find a buyer at $2000 through ebay or the Aprilia forum but wanted to try here first. KBB lists it as $1510 to $2250 but I've added a big carb, big cylinder, new transmission gears and Arrow CF exhaust.

Here's the history.

2005:
This Aprilia has been in my hands since it showed 400 miles in 2005.
I've replaced the top end with a 86cc kit and put on the big carb and racing pipe.
it will do an honest 90 mph (but way too far in the red line) and handles 70 mph comfortably.

2006:
I lost the wrist-pin retainer in '06 which put it on blocks for a few years before a new top-end was installed.

2009:
The new top-end test ride ended up with gears froze in 5th after about 30 miles riding in 2010 which put it on blocks again until I found a new 4th and 5th gears for it last year.

2016:
4th and 5th were installed on the original gear shaft which was a bad idea because time had corroded the shift shaft enough that 3rd got stuck 1/2 way and turned my gear box into shrapnel after about 45 miles riding. I found a new gear box and installed it. 12 miles later the bottom end froze.

2017:
She now has a brand new bottom end racing crank, new piston ring, new gear box, bigger 6th gear sprocket to reduce top speed RPM and is good to go again.

2018:
I've been riding it to work and back a few times each month without any problems.

This is a fun little screamer which comes on the pipe nice at about 8,000 rpm with solid pull until 12,000.
She sounds very happy screaming along at 70 mph. Always gets 65+mpg and I have calculated 90mpg on one tank.
Some expected nicks and scratches at 17 years and 2900 miles. Never crashed.

Please buy it for $2000.

Later,
Kent Larson from Woodbury

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#2 User is offline   Udenberg Icon

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Posted 17 July 2018 - 11:18 AM

The vanity plate says it all!
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#3 User is offline   Champ Icon

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Posted 17 July 2018 - 11:26 AM

So cool
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#4 User is offline   Jim Hubert Icon

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Posted 18 July 2018 - 06:02 AM

View PostKent Larson, on 17 July 2018 - 10:59 AM, said:

...and I have calculated 90mpg on one tank.

Yes, but given your background in mathematics you can probably also turn a coffee cup into a doughnut. Posted Image

https://en.wikipedia...Torus_morph.gif
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#5 User is offline   Kent Larson Icon

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Posted 18 July 2018 - 11:38 AM

View PostUdenberg, on 17 July 2018 - 11:18 AM, said:

The vanity plate says it all!


That plate gets points and laughs from the 20-something crowd, which I guess I'm supposed to be humiliated by but instead enjoy immensely. I'm surprised the DMV let it through.

Later,
Kent Larson in Woodbury
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#6 User is offline   Kent Larson Icon

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Posted 18 July 2018 - 11:49 AM

View PostJim Hubert, on 18 July 2018 - 06:02 AM, said:

Yes, but given your background in mathematics you can probably also turn a coffee cup into a doughnut. Posted Image

https://en.wikipedia...Torus_morph.gif


One does not need to turn a donut into a coffee cup. They are the same thing. At least from a topological view. Maybe not from a view on tastiness.

Stop poking fun at me math chops. I've forgotten about everything I knew. Now buy my bike already.

Later,
Kent Larson from Woodbury
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#7 User is offline   CBR600F4i Icon

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Posted 18 July 2018 - 02:57 PM

Have you ran it at dctc?
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#8 User is offline   Kent Larson Icon

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Posted 18 July 2018 - 05:14 PM

View PostCBR600F4i, on 18 July 2018 - 02:57 PM, said:

Have you ran it at dctc?


Yes I have. That experience points out how much work is needed on the suspension to get it track usable. If the surface was perfectly smooth, you could rail around almost all other bikes (the RS50 is about 200lb soaking wet); something I have proven in multiple optimal corners during street rides in the past (with close friends--DON'T PASS STRANGERS OR MERE AQUANTANENCES MID-CORNER!).

But, take it to DCTC and you find that keeping the tires attached to the pavement is quite a challenge. Thankfully the lightness of the bike allowed recovery but I spent a lot of time feeling like I was riding a pogo-stick not a motorcycle.

The Aprilia forum has lots of information about how to fix up the front end issues but since this is a street ride for me, I'm not interested in taking the time or money to do it. I have no problem doing 80% street riding with it as-is. 100% for me is reserved for the racetrack.

Later,
Kent Larson from Woodbury
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#9 User is offline   sk8phreak88 Icon

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Posted 22 July 2018 - 10:42 AM

Man, this would be fun. Wish I could add another toy to the garage, good luck on the sale Kent!
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#10 User is offline   Kent Larson Icon

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Posted 27 July 2018 - 10:00 AM

We back up? Hope things are going well for our admins.
No interest here? Looks like it is time for a Craigslist add.

Later,
Kent Larson from Woodbury
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