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Discussion Starter · #1 ·
I'm on to my winter modification craze and wanted to see if anyone knew where a seat such as the one found on many of the Thruxton Cup bikes could be purchased. Picture below is what I'm talking about:



I'd prefer to make one to save my self some money but the part where I get stuck on what to do is how to make the back hump/cowl. I would make a new seat bottom and bolt the stock Thruxton cowl to it but the stock one is too wide for the shape I'd want. Please let me know if anyone has any ideas.

I still plan on keeping the stock seat in tact so I can use it on longer trips where the foam on a Thruxton Cup style seat might not be too comfortable.

[ This message was edited by: OldSkoolFool on 2007-01-15 17:23 ]
 

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Bend some sheetmetal over your frame to make a seat pan.

then look around for a pleasing cowl shape.Here`s a CB450 gastank.

and here is the back of an old TV set.

Look around,cowls are everywhere. :-D
 

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I will assume that you don't know how to worj with fiberglass or you wouldn't have asked. Uf you don't jnow what you are doing, the chances of getting a finished product that looks good are almost zero. Save yourself the grief and vuy one.

You can try here
hot wing glass
or here
AirTech

[ This message was edited by: MES on 2007-01-15 17:59 ]
 

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Discussion Starter · #7 ·
Thanks for the replies. I presonally don't know how to fiberglass but my father does so he could help me with that. I'm assuming some thicker fiberglassing would be necessary due to the weight and stress that's going to be on the seat. Haha Rodburner those are some creative methods, might be what I end up doing.
 

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Like rodburner suggested, an old gas tank works really well for cafe tail sections, but Rodburner is a little more skilled with the welding torch than the average RAT...

Tanks can be bought really cheap on Ebay or try the Jockeyjournal.com classifieds. I just bought a sportster tank for 20 bucks shipped.
 

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How about some high density foam cut to shape, glued to the seat pan then upholstered over?
or
surfboard type foam which is very easy to shape, then a bit of fibreglass over the top add resin and hardener sand smooth and upholster.

john

[ This message was edited by: ozbon on 2007-01-16 06:29 ]
 

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I sit so close to the tank, I barely use the real estate Triumph gave me on the stock seat. I'll probably take another Thruxton pan and use the stock cowl as a mold for a glass cowl. Need to change the footprint a bit while I think about storage for tools, maybe move to a gel battery, or a place to store my weed.

I'll do the airbox, but haven't decided whether to vacate the area, or mod the airbox for storage.
 

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I made a cowl for my old Honda CB. Used an old seat pan, glued strofoam to the rear 1/3 and shaped it with a file and sander. After getting the desired shape i covered it with fibergalss and resin, then finished it with galzing compound and a lot of elbow grease. When I was done poured some acetone in the foam and it eats it up leaving a cavity I plan on using for the elctronics. Takes a lot of patience and if you have never worked with fibergalss before go easy on the hardener so you have time to work with it. The whole process is pretty forgiving.
 
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