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Author Topic: my small displacement APS build  (Read 4095 times)
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sofadriver
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« on: April 08, 2014, 10:50:31 PM »

[/URL][/img]

this is just a test

[/URL][/img]



« Last Edit: April 08, 2014, 10:57:46 PM by sofadriver » Logged

Mike in Tacoma

"aww, what the hell - let's just do it".............

100cc APS/G #833
sofadriver
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« Reply #1 on: April 08, 2014, 11:01:41 PM »

Yippeeeeee - I got this thing to work!
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Mike in Tacoma

"aww, what the hell - let's just do it".............

100cc APS/G #833
sofadriver
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« Reply #2 on: April 08, 2014, 11:09:55 PM »

OK
For real now;

After my last track day in May 2013 I came to realise that those days are over. Old age, slow reactions, poor eyesight, etc., etc. I sucked at it anyhow. Sold the 2nd to last Ducati (they will bury me with my beautiful 1996 Ducati 900 SS/SP) and, since we had already planned a road trip to Speed Week anyhow, decided to jump in with both feet. (see my motto at the bottom of each post)

I started with this 1993 Honda RS125 factory GP bike. Tip: never buy a fully functional motorcycle with the intent of building an APS bike because half of it won't be there when you're done. BTW, If you know anyone searching for a whole bunch of used RS125 parts please let me know.  rolleyes


« Last Edit: April 09, 2014, 12:47:08 AM by sofadriver » Logged

Mike in Tacoma

"aww, what the hell - let's just do it".............

100cc APS/G #833
sofadriver
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« Reply #3 on: April 08, 2014, 11:48:11 PM »

https://www.dropbox.com/sc/c9lni5zbsldy11v/sZAbASk9wm
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Mike in Tacoma

"aww, what the hell - let's just do it".............

100cc APS/G #833
tauruck
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« Reply #4 on: April 09, 2014, 12:03:08 AM »

All true.

I guess you might get away with eroded reactions in a race car but on a bike not so much.

I have the biggest respect for bike racers no matter what level they compete at.

You've done a fine job on your project and I hope you have a great time with it. cheers cheers cheers

Mike.



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sofadriver
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« Reply #5 on: April 09, 2014, 12:37:32 AM »

crap...........................i just spent an hour uploading pics and then lost them all.  angry I really hate this Windows 8
more later
I'm going to bed


* 2014-03-15 14.54.58 (2).jpg (386.05 KB, 1605x1152 - viewed 205 times.)
« Last Edit: April 09, 2014, 12:40:04 AM by sofadriver » Logged

Mike in Tacoma

"aww, what the hell - let's just do it".............

100cc APS/G #833
tauruck
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« Reply #6 on: April 09, 2014, 12:38:49 AM »

I still use XP grin
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Peter Jack
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« Reply #7 on: April 09, 2014, 12:57:56 AM »

You just lost Microsoft support today Mike!  rolleyes rolleyes rolleyes

Pete
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Nortonist 592
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« Reply #8 on: April 10, 2014, 09:59:55 PM »

You just lost Microsoft support today Mike!  rolleyes rolleyes rolleyes

Pete

I've had Microsoft XP for years and I've been going to Bonneville for years.  Never got any support from Microsoft.  So I don't think it will be missed.
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Get off the stove Grandad.  You're too old to be riding the range.
sofadriver
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« Reply #9 on: April 12, 2014, 12:08:37 AM »

My apologies for all these links but they are all from the "Dropbox" app.  Pretty cool but I understand that there's no actual picture stored somewhere - just some links floating around in the "cloud"


So I started with this.......

https://www.dropbox.com/sc/vaokisjrf6bj1d6/YYIRFui9pJ

Added 7" to the swingarm (wish I'd added more).........

https://www.dropbox.com/sc/2ou5dykl11tul0u/VPYhL8jOdg

Replaced the seat subframe to make it lower and narrower so I could get my knees together. Added the adjustable front fairing stay tube. It can slide forward and back. Since the fairing nose slants back I was able to adjust the finished nose height by sliding that tube in and out.
https://www.dropbox.com/sc/g3ny4hkq2fvkq7v/13nATKY-12

« Last Edit: April 12, 2014, 01:21:43 AM by sofadriver » Logged

Mike in Tacoma

"aww, what the hell - let's just do it".............

100cc APS/G #833
sofadriver
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« Reply #10 on: April 12, 2014, 12:21:14 AM »

Glassed up a front fender but eventually decided against using it.

https://www.dropbox.com/sc/o6gi7nrnv6kofkj/D2r5-kcUjL

The first of about 60 tapered, thin plywood sticks over ribs. Using strips 1" wide at one end and 1/4" wide at the other allowed more bending at the front end and I got a naturally aerodynamic shape. I didn't use enough ribs, though (which I paid for later)

https://www.dropbox.com/sc/zbfzctr718p3w57/odQimasZPc

Strips on and being covered with masking tape. The start of a very steep leaning curve!

https://www.dropbox.com/sc/axz0v2xu77z9z6b/WTpBGVILpn
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Mike in Tacoma

"aww, what the hell - let's just do it".............

100cc APS/G #833
sofadriver
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« Reply #11 on: April 12, 2014, 12:36:57 AM »

View from the storage loft. I used a 1:7 width to length ratio. Full length it would have been well over 10". Chopped off at 9 1/2" behind the tire, it's 95".

https://www.dropbox.com/sc/uv19katev77f7x2/P9Q7V5-PTl

Glassing begins. Another big learning experience. I've a done lot of fiberglass boat repairs but making a body from scatch around a motorcycle was a whole different deal!!

https://www.dropbox.com/sc/m3fe6mfvkyeu67i/yXVwCgZndC

It looked great until I color sanded.  UGH!. The start of 2 months of pain! Seatback is in and chestbed (I just made that word up) is laid over the gastank.

https://www.dropbox.com/sc/7au90k74as5nf8n/pfIAxxaL6f
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Mike in Tacoma

"aww, what the hell - let's just do it".............

100cc APS/G #833
sofadriver
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« Reply #12 on: April 12, 2014, 12:46:09 AM »

After rough cutting the tail from the rest of the body, I began fitting it to me.

https://www.dropbox.com/sc/ee9fx7m4mw4kpbp/PRQ5Mh8XPW


Looking over the gas tank I made from a length of 2x6 alum. square tube at the APS tail.

https://www.dropbox.com/sc/1o8sxqgig6q3d0z/FLCVB1K4we


Fitting me into the body.

https://www.dropbox.com/sc/4yvrwwiyajl3ge0/8jRBlzJL9j
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Mike in Tacoma

"aww, what the hell - let's just do it".............

100cc APS/G #833
sofadriver
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« Reply #13 on: April 12, 2014, 01:04:23 AM »

View of the front end. I overworked a lot of brain cells thinking this up!
I rented a bunch of those big carpet drying fans and jerry-rigged a wind tunnel. I was really pleased with the results. All my little tufts of yarn attached to the body went straight back. Only the salt will really confirm the slipperyness.

https://www.dropbox.com/sc/zs0hea5q7rpjfz7/tuQHXyyg_I

https://www.dropbox.com/sc/5t5iup8d3pqimv3/wx73yF1bD0

That T shaped bar on the ground is my best invention ever. The handlebars are way down inside at mid thigh height so it's near impossible to push the bike around. That T bar slips down into the triple tree tube making an extra set of easily removable handle bars at chest height. Plus I can attach straps to it without them touching the body.  Me likey!

https://www.dropbox.com/sc/xpr69f7lxt85a90/ZIhp0JPdUW



Let the discussion about the tail section begin! (I'll explain my theory later)

https://www.dropbox.com/sc/qd9c8zguv3iogft/jcTwQHN28f
« Last Edit: April 12, 2014, 01:44:02 AM by sofadriver » Logged

Mike in Tacoma

"aww, what the hell - let's just do it".............

100cc APS/G #833
sofadriver
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« Reply #14 on: April 12, 2014, 01:16:25 AM »

At present, we are working on the motor. Have I mentioned this is the 100cc class? Using a modified Kawasaki KX100 dirtbike motor. I had a 2stroke "guru" sit on my motor and blow smoke up my a** for 6 months and never even started on it! I've run out of bad words for this guy. Now I've found a reputable builder with an in-house dyno who's closer to me but we're getting a late start.
« Last Edit: April 12, 2014, 01:51:53 AM by sofadriver » Logged

Mike in Tacoma

"aww, what the hell - let's just do it".............

100cc APS/G #833
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