Brat Style Seat

[.jordan]

Anyone have experience or pictures of how to go about welding in a rear hoop, rear fender and a flat bratstyle seat pan? I've seen a few examples on here of how to do the hoop, but I'd like to see a little bit detail on the seat pan, etc.

 

[mothgils]

Hey man...click on my build thread in my signature. I welded a rear hoop that I bent up. I did a seat pan. I simply got the measurements that I needed for a pan and then laser cut a blank (helps to work in a sheetmetal fab shop). I then rolled the blank to get a slight curve to match the frame and finally press-fit some threaded inserts so that it would locate on the frame into some holes I drilled.

 

[chrisf]

Start here: http://www.dotheton.com/forum/index.php?topic=12691.70

Then go forward.

--Chris

 

[andoor]

I used the original rear fender support for my hoop. Then I just matched the shape of the frame tubes with a sheet of 16g steel. There are more pics in my build.

 

[.jordan]

perfect, thanks for the help guys

 

[johnnynogood]

how did it turn out? photos?

 

[cr8zy1van]

Hi there... I am a first time builder finally getting around to my cafe racer I have always wanted. I was super unsure of where/what to cut, but think I did allright. My seat is obviously not a brat style, but the hoop will probably work for you. Its a 72 CB500 that I picked up 3 weeks ago for $300...


First the lines I tentatively decided on cutting...

then the cut...

a piece of bent pipe I sourced from another project (I don't have a pipe bender)

and the final welds with sheet metal.

and a mock up of a cafe tail... im replacing that tank with something longer.... if i can find something

 

[JRK5892]

on the wing i did not do a frame hoop but this will help maybe

Hoosier was cool enough to send me his seat blank he made for his seat, made my life so much easier to make my seat...

foiled and fleece stretched

wood cut for staple points for the seat cover

glass laid

made a tab to fit under the tank, i have 2 more tabs that will bolt to the side of the seat and to the frame rails to pull it nice and tight to follow the lines the bike has naturally, but that needs to be added later

spray glued on the 2 in foam

some of the markings to ensure it is level on all sides as it is shaped

seat shaped...

fabric

mount bolt
goes though the frame and tightened down with a wing nut under the frame rail

took about 1/2 inch off the back, and shaped it a bit better with the cutter and the sanding wheel

final

as she sits now

sorry so long but i find the more there is to goo off the more it helps... final pic on the bike

 

[eram]

I think I just drooled on my keyboard...

Wow, crazy nice work. Thanks for the writeup!

 

[DirkDigler]

you wasted a good frickin shirt man

 

[JRK5892]

hahahaha

 

[VonYinzer]

Seriously, that was my first thought too. Hahaha

 

[Tim]

Someone's gonna pull that cover off in 10 years, find the t-shirt and say WTF?