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Discussion Starter #1
Thanks for the help! Well here are some early pics of the build. At this point I had safty wired things into place, but it will help you see the idea anyhow. I'm going to take some more pics today. Riding season is comming up soon and I better get my shit together and get this bike running!


If you build it they will ride.


Edited by - Anythingillegal on Feb 27 2007 08:51:25 AM
 

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Hope you dont mind, I got your link from your pic and I'm gonna post the fullsize picture.


Some big ass front brakes would set that setup off.

Check out the setup on http://niskygarage.logical.net/...

Now that would be a sweet setup on your streetfighter / sportbike hybrid you got goin on there... Again, Hope it's ok to hijack these photos, if not then pls just mention it. Thanks

Hey By'
 

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Discussion Starter #5
The sub fram is in a temporary stage. I need to get the fiberglass started. What do you guys think of the shock angle? Is it practical? It's comming along.


If you build it they will ride.

Edited by - anythingillegal on Feb 27 2007 7:06:31 PM
 

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Discussion Starter #6
I'm still not shure what I will end up doin with the exhaust, but 2 into 1 was my plan. In the first few pics you can see that I had the Ti muffler mocked in the tail section, but due to the fact the carbs are in the way and with weight issues I think routing them down under the bike will help handeling (Beull style). Oh I shortend the muffler 8" becouse this muffler origally came off a Hyubusa 16". Maybe it's to much flow with 1-1/2" tubing, does anyone have any suggestions?


If you build it they will ride.
 

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Discussion Starter #7
I have many cool ideas I'll be suprising you with, like the head lights. But you'll have to wait. Does anybody know of a bike that the head has been turned 180deg.? Carbs pointing forward. Now I just getting crazy<img src=icon_smile_approve.gif border=0 align=middle>. Thanks for the intrest, cool site.

If you build it they will ride.
 

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Ok, it is a neat project and I think it is cool that you are trying something different.

that being said I think that honda tail is too big for the bike and looks ugly. It is way too long and wide. A longer swingarm might fix that and your shock problem (see below).

Also you need to rethink your shocks, you can't just lay them down like that and expect the suspension to act the same. You have now changed the leverage forces and those shocks are probably inadiquate for what you need. If you need shorter shocks there are 11" lowering shocks that cb750 guys use that could be adapted to your project.

as for the 180 degree head, JT Nesbit (of confederate fame) has a motoguzzi eldo that he did that to years ago. Basically he remachined a stock head to bolt on backwards. That bike was the coolest to look at and even cooler to ride, had a ram air effect when you got above highway speeds. With a honda head you will have to reverse the cams too - it is probably too much trouble for the sake of being cool but if you pull it off more power to ya.

edit: I was thinking about it and it might save you work if you reversed the barrels to. On a v-twin motoguzzi this is not that easy but on on a parallel twin honda it might just be a matter of switching the barrels right to left and remachining a cam but it is your bike - play with it.

Edited by - Geeto67 on Feb 27 2007 8:35:02 PM
 

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I've built a few swingarms and moved a few shocks.......those shocks are going to fold up like paper under load...it will completely compress the springs and the dampers will do little or nothing and you'll be putting tremendous stress on the swingarm pivot. I would fully expect it to bend the tubes at the top shock mounts the first time you hit a decent bump or dip in the road.
Does look cool though.
JohnnyB
 

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Discussion Starter #10
Well in regards to the tail section, I have cut 1" out of the middle to compensate for the wide look. My first thought was that running the muffler up under the tail section would justify the width, but then exhaust routing complicated the lines around the engine. Now I'm using a third brake light out of my Acura tuner as a tail light. Once the fiberglass takes shape I'll post more pics.

As for the suspension I relize that it will be softer and that a fix will have to be made. For instance progresive makes heavy duty springs. I think that will cure my spring issue but what about valving? Things I have considerd like you say is a shock off a heavier bike.

Next winter I will be extending and widening the swing arm to suit a larger rim which will again solve the problem with the wide tail section. I was thinking of continuing to use a spoked wheel for the rear (light weight), but the rear rim will be laced on the front hub and a new wider rim will be laced to the rear hub.

Well anyhow these ideas will change depending on good input from fellow riders like your self and the need to continue the lines of the bike.

Thanks for the constructive criticism<img src=icon_smile_blackeye.gif border=0 align=middle>

If you build it they will ride.
 

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Discussion Starter #11
The subframe is still in the mock up stages. I tend to work from five angles at once. It sometimes works in my benifit. That is 1" bar in the pics, 5/8" will be used to triangulate the subframe. Also I will be doing "Ducati" styling under the gas tank. I love the input! Can't wait to show the end result!

If you build it they will ride.
 

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quote:

As for the suspension I relize that it will be softer and that a fix will have to be made. For instance progresive makes heavy duty springs. I think that will cure my spring issue but what about valving? Things I have considerd like you say is a shock off a heavier bike.
you need to move the shock mounting point on the frame higher. You aren't just going to get softer suspension but posibly stiction in the shock itself as well. That extreme an angle is just plain bad geometry and the shock body is going to pay for it dearly.

Go get tony foale's book on motorcycle chassis design if you are going to go that radical.

If you really want to be a badass weld a top brace to your siwngarm and use a set of softail HD laydown shocks underneath the tank. That would look really cool and be different.
 

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Hey Illegal,
I applaud you for trying to be unique and hope you can make the reverse head work on your Honda. Many have already done it with vintage Triumph twins and I think the triples as well. The Triumph head bolt patterns and push rod arrangements are symetrical making it quite simple to reverse. The intake and exhaust cams are different though (the intake cam drives the points and tach) so spinning the head requires a new set of cams to be made.

As for that seat. It's not the width as much as it's the angle + length = altitude that's the deal breaker for me. It reminds me of another bike I once saw..............



Cheers, Bret @ Glass from the Past
 

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Discussion Starter #14
All right so the design is flawed, but you guys have the gears turning.

The "Softail" shocks would mot work. They are designed to be pulled on, not collapsed or pushed on. Removing the stock back bone and doing the "Ducati" thing would make room for a monoshock. I think this would be a good project for when I do the new swing arm. The tank I have on now is very open underneath wich would accommodate this setup.

quote:As for that seat. It's not the width as much as it's the angle + length = altitude that's the deal breaker for me. It reminds me of another bike I once saw............
If I cut the back bone out and make my own that would allow me to mount the tank higher and lower the tail section, still alowing for tire clearance.

Keep it comming! You guys are helpful.

If you build it they will ride.
 

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i say built it like a tz, with the monoshock linkaged and attached near the steering head.


jc
 

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Yeah man, those shocks are no good... that angle is not only impractical but prolly useless, unless you like bumpin yer arse on the ground......
 

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quote:
i say built it like a tz, with the monoshock linkaged and attached near the steering head.


jc
The early TZ used dual shocks mounted in line with the top backbone. the TZ swingarm had a standard pivot point but also a brace that rose to meet the shocks at the back of the backbone (I'll try and find a pic). Eventually it morphed into a monoshock. Cycle world had a grea article on the TZ in 2004 with a naked TZ chassis. Surprisingly the frame was actually designed for norton in the 1950s.

this is a 76 Foale modified TZ frame but you get the idea:
 

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Look at the monoshock on the Yamaha Virago. It is a short shock the runs between the frame an th triangulated swingarm. They are a ime a dozen on e-bay.
Ken

AHRMA 412
Vintage racing - old guys on old bikes
 
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