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FJ1300RT Reverse Trike Concept


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#1 nofreeride

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Posted 27 January 2010 - 10:15 PM

OK, Nitrotate is actually doing it. I'm just still thinking about it. I have acquired a donor bike now, gotten a little capital to get started, and spent a lot of time designing on Sketchup. The results so far:


fjr1.jpg

Comments and questions welcome. The general requirements are: side-by-side seating, windshield, front cycle fenders, and no fancy time-consuming body. The donor is actually an '04 FJR, even though the bike in the photo was lifted from some other sketchup model. The overall dimensions of the bike, tank, etc, match the FJR very closely.
 



#2 GalaxyBlue

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Posted 27 January 2010 - 10:59 PM

Would be interesting to see this in reality.

I would think a Busa would make a better platform for this though.
wfo05.gifwfo06.gifeom08.gifsfo09.gifswfog10.jpgSWFOG2014_zps29cf405c.jpg

#3 cruppelt

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Posted 28 January 2010 - 10:06 AM

I am following Nitrotrades build closely, and have been wondering what he will do to make the body look finished in some way. I can see from your sketch that you are thinking of just using the cage for the looks ala dune buggy, the lights fit that as well, and I think that's the best idea to keep it simple.

Go for it!

GalaxyBlue,
I think the point is that if members wanting to do a project like this here can get cheap wrecked FJRs as donors, then it's a bike they are already familiar with in technical terms, which will save them from any surprises, or at least that would be the hope.


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#4 reecebike

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Posted 28 January 2010 - 10:14 AM

Nice car!!!
Tommy Reece J.R.

#5 Panman

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Posted 28 January 2010 - 10:55 AM

I always think it's cool when someone takes the time to build something, weather I like it or not it's the effort.
Here is a shot of something like your talking.



Keep us posted.
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#6 ionbeam

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Posted 28 January 2010 - 11:08 AM

While not a home-built, that Campagna T-Rex is certainly hot. It ought to be with an entry price of $50k. Its performance backs up the looks.




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#7 nofreeride

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Posted 28 January 2010 - 11:25 AM

QUOTE (GalaxyBlue @ Jan 27 2010, 10:59 PM) <{POST_SNAPBACK}>
I would think a Busa would make a better platform for this though.


Is that because of the high horsepower engine, or are there other reasons? The FJR has an AE model (no shift linkage or clutch needed). If I were to make plans or a kit available (cart WAAaaaY before the horse here), that would be an interesting option. 145HP at just over 1000lbs is a very, very good ratio in the car world.

QUOTE (ionbeam @ Jan 28 2010, 11:08 AM) <{POST_SNAPBACK}>
that Campagna T-Rex is certainly hot.


The T-Rex has inspired many home-builts and knock-offs. With CanAm, they are carving a niche and paving the way for 3-wheeled vehicles. Add the traditional trikes and various electric and hybrid lightweight vehicles, this is an expanding market. Would it appeal to people to be on the road in something like this for under 10K? (I know... cart, horse, whatever. Talk is cheap.)

#8 ionbeam

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Posted 28 January 2010 - 11:34 AM

QUOTE (nofreeride @ Jan 28 2010, 02:25 PM) <{POST_SNAPBACK}>
...Would it appeal to people to be on the road in something like this for under 10K? (I know... cart, horse, whatever. Talk is cheap.)

Even if the entry price was below $20K I would be shopping for a T-Rex. I had a chance to play with one and it is the real deal.


Bad decisions make for good stories.


#9 nofreeride

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Posted 29 January 2010 - 12:23 PM

Yellow Roadster: This one would put bugs in your teeth. But looks pretty good.

(couldn't find the picture. stupid webshots. Showed a cut down windshield and roll bar, no roll cage.)



#10 RadioHowie

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Posted 02 February 2010 - 07:29 PM







ZRX-powered SportCycle

#1 benefit of a FJR donor than a 'busa? Shaft drive.


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#11 nofreeride

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Posted 20 February 2010 - 06:44 PM

Got a bunch of front suspension parts and assembled some of the parts. Pinto rack widened 4", with Pinto 2" dropped spindles. Now I will need to get back on the computer and design the crossmember so all of the geometry will be correct (hopefully).
 

fjr2.jpg



#12 k7lvo

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Posted 20 February 2010 - 07:37 PM

Take a look at this one - it's BMW-based, but it shouldn't be too hard to slip another brand/model in:



Clicky

(I've been telling him he'd be better off to go with an FJR or a Gold Wing. He can't find a way to put a car tire on the BMW swing arm, and he goes through motorcycle tires every couple thousand miles...)

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#13 nofreeride

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Posted 21 June 2010 - 03:48 PM

Redesign. Shown with body in unpainted aluminum.
 

(see first post. design did not change significantly. stupid webshots.)



#14 nofreeride

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Posted 14 September 2010 - 08:43 AM

Front Suspension tacked up
 

fjr2.jpg



#15 cruppelt

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Posted 14 September 2010 - 09:21 AM

QUOTE (nofreeride @ Sep 14 2010, 09:43 AM) <{POST_SNAPBACK}>
Front Suspension tacked up


Great job, now keep 'em coming!! biggrin.gif
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#16 nofreeride

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Posted 05 October 2010 - 08:58 PM

Making progress slowly. Here are some more photos.
 

fjr3.jpg

 

fjr4.jpg

 

fjr5.jpg

 

fjr6.jpg


Wheelbase ~ 118"
Width ~ 69"
Length will be ~ 144"
Ground Clearance ~ 6"



#17 Thug

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Posted 06 October 2010 - 01:30 AM

Very cool keep em coming boys!
Does this make my arse look big???

#18 noland

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Posted 06 October 2010 - 05:14 AM

nofreeride,

I like your second CAD version better. Have you calculated the weight distribution F/R, and weight as taken at each wheel? I wonder if nitrotate has done this as well? In his video, the wheel spin is crazy! (Granted - no CT yet and he does have a wing). You mention power to weight ratio. In the car world, the Ariel Atom has been the recognized standard in this type. (They have a spec page that tracks power to weight and performance). I guess what I'm getting at is that has anyone considered how to best lay that power down? IDK. Thoughts?

#19 radman

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Posted 06 October 2010 - 06:45 AM

nofreeride,

I guess what I'm getting at is that has anyone considered how to best lay that power down? IDK. Thoughts?


Yeah-add another rear wheel. Kinda screws the concept though. With Traction Control coming on-line in bikes more and more though, a fix lies in the near future.
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#20 nofreeride

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Posted 06 October 2010 - 06:48 AM

nofreeride,

I like your second CAD version better. Have you calculated the weight distribution F/R, and weight as taken at each wheel? I wonder if nitrotate has done this as well? In his video, the wheel spin is crazy! (Granted - no CT yet and he does have a wing). You mention power to weight ratio. In the car world, the Ariel Atom has been the recognized standard in this type. (They have a spec page that tracks power to weight and performance). I guess what I'm getting at is that has anyone considered how to best lay that power down? IDK. Thoughts?


Thanks for the comments.

I am going off of the last design shown in the post, the blue and silver car. It has and will change slightly as the build progresses (I have already added 6" of legroom to the cockpit over what the design had). I am updating my drawings as I go so as to hopefully have an accurate set of plans when I am done.

I do not know what the final weight distribution will be, nor do I know exactly how much it will weigh. I designed it with the weight as far forward as possible, within the constraints I had to work with (side by side seating, legroom, firewall behind the suspension).

For a reverse trike, stability is achieved through a wide front track, low cg, and long wheelbase, along with forward weight distribution. Without fancy interference measures (like the CanAm) sliding before rolling over needs to be part of the design.

Performance is secondary for me. If I wanted to compete with the Ariel Atom, I would have made it with 4 wheels, a shorter wheelbase, and a rear-mounted FWD drivetrain. That said, I don't expect it to be a slouch!

Less weight on the rear and a single, narrow rear tire is admittedly not optimal. For max performance in a reverse trike, we would probably be looking at driving the front wheels instead.