
Fitting the fairings |
Well, sooner or
later this bike has to start looking more like a sportbike.
That means that I have to cut out all of the body panels,
or "fairings", to fit around the new engine. The
fairings will give the bike its aerodynamic shape and help
it cut through the wind better to reduce drag. They will also
help to hide all of the components which are necessary for
the engine.
The fairings
are made of fiberglass of some sort, and are not too difficult
to cut out. In fact, the process was fairly painless and
I forgot to take pictures of the actual work being done,
so descriptions will have to be adequate for this go round.
I do however have some nice pictures of the end result.
It certainly makes the bike look a bit meaner, and gives
it that "sportbike" look.
All of the cuts on the fairings were carefully marked using
specific calculations called the "do it by eye"
technique. The pieces were then cut using a Dremel tool
with a rotary cutter and a flat base to keep it perpendicular
to the body pieces. Once cut, a bit of hand work with sandpaper
and a jitterbug sander were all it took to clean things
up.

Fairings cut to fit
Well, here is
the first picture in the series. As you can see, the fairings
are all cut and fit on the bike. The only piece missing
at this point is the front fender, which I do have but forgot
to put on. I still have to find a cover for the battery
box in the rear fairing, so if anyone has one leftover from
their YSR days, please consider donating it to the cause
and shoot me an email! PLEASE!

Left side of the bike
The left side
of the bike is very clean so far, with only a small amount
of the fairing cut away for the engine at the very bottom.
There are some tight clearances inside and the cuts may
have to be enlarged around the turbine inlet if I can not
find a suitable way to shield the pieces from the intense
heat. Fortunately I have all of the heat shielding goodies
from Design Engineering that may do the trick. I will have
to check it out once I get everything completed here and
have the engine running in the bike though.

Ground clearance
From the left
side you can see the available ground clearance pretty good
in this low shot. The extension of the swingarm also starts
to be quite visible as well. Of special note is the nifty
little stand I fabricated to hold up the rear of the bike
from the swingarm. There are small "v" grooves
at the top of the stand which mesh with small pieces welded
to the bottom of the swingarm. This keeps things nice and
steady. The design of the stand lets me change the rear
tires with the bike jacked up too. Sometimes it is the little
things that make life easier!

Lotsa room now
Taking a look
from the back end, you can see there is lots of room for
the exhaust now, and even some extra room for batteries
and such. What at first glance looks like a small area,
should give enough room for lots of goodies. That swingarm
looks a bit sparse though. I have just the thing for it
however, in the form of some nice CO2 bottles to power the
bike systems. I will be fabricating some mounts for them
to fit back there this weekend, and know that I will be
using at least 2 bottles, but possibly 4. We'll just have
to see how they turn out.

Close fit
Here is a nice
shot that shows how close the turbine inlet sits to the
fairings. Although I can cut more out, I really like the
look of things being so hidden and clean. Once again, this
will have to be put to testing to see if it can stay this
way with the heat.

View from the front
The bike still
almost looks stock from the front. Of course the engine
sticks out the side a bit, but is actually more compact
that we originally thought. If you look closely, you can
see how far it sticks out in relation to the footpeg which
is right above the combustion chamber in this photo. The
lean angle on the bike is still 45 degrees, which means
that the bike can be leaned over a full 45 degrees when
going into a right hand turn. A tighter lean angle is better
for higher speeds, but it is a small price to pay for getting
a jet engine crammed into one of these bikes.

Broken upper fairing
Here is a bit
of a problem. The upper front fairing on the bike has a
nasty break in it. The piece is completely missing right
where the upper attaches to the lower. I had hoped that
the piece could be fixed easily, but decided I would rather
have a nice clean one if I could find one somewhere. Fortunately,
I found one on Ebay just a couple days ago, and expect it
to arrive any day. This will save a lot of time in getting
things ready for paint, and wont have those ugly telltale
signs of a repair on them.

Should look like this
This is the way
the fairings should come together when not broken. The upper
isn't even bolted to the lower right now, they are just
hanging from the frame brackets, but you can clearly see
the look is much better.

Turbine inlet
Here is another
great shot of the left side and the turbine inlet. I really
like the way it looks since the exhaust bend that was made
earlier follows almost the same lines as the fairings. If
additional material has to be cut away for heat reasons,
it will make the cut extend up to the point where the swingarm
bolt can be seen on the side frame piece. I do hope that
can be avoided.

The exhaust path
The exhaust certainly
has a much cleaner path to follow now, and there will be
less curves in the plumbing which can rob power from the
output of the engine. Every bend in the exhaust can steal
a little bit of thrust from the final output, so straighter
is definitely better here. This rear end will be covered
up soon with the new afterburner system. The new afterburner
has been modified greatly, and will be twice as fun, hint
hint!

Room inside
Here you can
see that there is a nice bit of room between the turbine
and the fairing. The airspace should help in the heat dissipation,
but there will also be heat shielding material right here
to combat the intense heat of the turbine.

Air intake
Again, it is
just so cool to actually see the air intake of the jet sitting
inside of the fairings, and know that I will soon be riding
this beast around with the whine only a jet can make. A
close look at the mounting plate that attaches to the front
of the engine will show that the mounting holes have been
modified slightly to become slots so that the engine can
be rotated for the best fit.

Windscreen
And here it is
with the windscreen on. Not much really, but it does give
a nice little clear bubble on the front. The more pieces
I add, the more it looks like a whole bike again. I am looking
forward to opening this thing up and seeing how fast I can
go with it, until I get scared and back off the throttle
at some point that is!

Looking complete
After all of
the pre fitting, I finally removed the fairings and cleaned
up all the cuts, being sure to round over all the edges
to look like the factory cut edges. It has certainly come
a long way from the beginning, and there are only a few
more hurdles to jump before I can officially start her up
with the jet inside.
Another update
in the bag, and one step closer to the finished bike. Next
up is the fabrication of the exhaust, the mounts for the
CO2 bottles, and a few more surprises. Keep checking in
for more, and as always please help support the site with
your donations and "clicks for the cause". We
appreciate all our viewers, and are proud that the military
personnel to whom this bike build is dedicated are getting
the opportunity to view the site. Until next time friends!
Russ W. Moore
and
The Bad Brothers Racing Build Team
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