Another B.T.R. Build.......

Got the main tubes on the forks tacked on, I also made some axle tubes out of 3/4" tubing sleeved inside of 1", than drilled and tapped with set screws.

img0671ycz.jpg


img0677rc.jpg


img0678wp.jpg


img0679y.jpg


The wheel pictured is the hub I am using for the front, it is off of a Honda XL185, I feel more confident with a motorcycle brake in the front not to mention the whole wheel with tire was $45.00, I'll use this rim and tire for mock up than lace up the other black rim I have later on. Now that the mounting points on the fork are complete I started working on the main part of the frame too. Hopefully I'll have it all tacked this week...

img0682k.jpg
 
Last edited:
Finished tacking the middle frame together. Up next, make the rear drop outs and I have to work on a jig to keep the wheels in line so I can make the rear triangle.

img0689xy.jpg


img0691ij.jpg


img0692u.jpg
 
Looks great! A lot of detail in your build! Was it hard to align everything on the floor like that? Looking forward to see how your going to set up the jig. Also, what software did you use to dimension your 2D drawing?
 
projectstarter2012 said:
Looks great! A lot of detail in your build! Was it hard to align everything on the floor like that? Looking forward to see how your going to set up the jig. Also, what software did you use to dimension your 2D drawing?
Click to expand...

Thanks, Laying it out on the floor actually made it really easy for bending, cutting, and notching the tubes. It was also nice to be able to visualize the frame with the engine and tires in place before I made any cuts. I used an old version of Macdraft for the drawings.
 
I got lucky and found an aluminum white board track that cradles my tires perfectly, made some uprights to hold the frame and put it on a table. No more working on the ground. I also got the upper shock mounts tacked but will probably redo them...

img0700co.jpg


img0706ck.jpg


img0709fo.jpg
 
truckd said:
The forks are probably the wave of the future but forgive my ignorance how do they work?
Click to expand...

Theres nothing new or special about them, they move a lot like a Schwinn springer fork but the springs/ shocks are set up differently. The lower truss part (green) is all one piece and is connected to the triple trees via bushings (red), the shocks are an internal coil-over from the front of a motor scooter. I am only expecting a couple inches of travel out of this but at least it's dampened travel and will hopefully take the jolt out of the handle bars plus it still has a somewhat vintage style.

img0700yk.jpg
 
Very clever on the fork JTS, I think someone suggested that on my build thread. I'm glad to see you realize the idea.
 
Well, I made rear drop outs and set up the triangle but I don't like it so I am going to rotate the triangle a little to raise the overall height and shorten the wheel base, I'll also move the head tube to make sure everything stays level and geometry is correct. It turns out the shocks I have are going to be too soft for this set up so I'll probably get mountain bike coilovers like these which will hopefully stiffen it up.

img0710ll.jpg


img0715xp.jpg


img0716ij.jpg
 
I got the rear triangle rotated today, I shortened the wheelbase by about 2" and raised the height by about 1.5". Also, just for fun, I made some handlebars out of a few pieces of bicycle handlebars welded together and to bolts which I just drop into the triple tree tubes...

img0723rw.jpg


img0726gf.jpg


img0728ve.jpg
 
Looking good!!!!!!!!! Just wondering why you made the rear triangle joins at 90 degrees, rather then having a bend? Did you design it that way or was there a problem getting the bends? This is such a high quality build that at this stage of the build (maybe it will look fine when finished) it looks a little odd to me.

Otherwise its looking great and you sure do work fast.
 
harry76 said:
Looking good!!!!!!!!! Just wondering why you made the rear triangle joins at 90 degrees, rather then having a bend? Did you design it that way or was there a problem getting the bends? This is such a high quality build that at this stage of the build (maybe it will look fine when finished) it looks a little odd to me.

Otherwise its looking great and you sure do work fast.
Click to expand...

The 90's are just a base of what will be there, I'll be boxing that area in and adding angles for looks and strength.
 
Chit I like the bike...the tires, the bars the fork... I like it all... That is a great build so far... Makes me want to build another... I never get tired of btr bikes...
 
You must log in or register to reply here.
Back
Top