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How to ruin a perfectly good stock frame

  • Thread starter Thread starter mlc216
  • Start date Start date
Mindless said:
Now that's better. :)

I still think it's a good idea to put some bracing from under the tank somewhere towards the lower end of that triangle-brace at the headstock. ;)
Click to expand...

Yep, I agree and triangulation absolute is key at such a stress point. Also it looks as though the motor will be leaning back 30 degrees the way the frame is?? Good luck with the build though.
 
Agemax said:
that looks much better, front end is more proportioned now
Click to expand...

Told ya I had a better front end in mind... Just waiting on my XS650 trees to come in so I can make the new tubes fit.

Mindless said:
Now that's better. :)

I still think it's a good idea to put some bracing from under the tank somewhere towards the lower end of that triangle-brace at the headstock. ;)
Click to expand...

I have thought and re-thought about adding a stress bar (like an original harley wisbone frame has)... In the end I may sacrifice the beautiful open space above the motor and put a stress bar in...

oohsam said:
Those forks look much better man! Good work son!
Click to expand...

Thanks!
 
TPL said:
Yep, I agree and triangulation absolute is key at such a stress point. Also it looks as though the motor will be leaning back 30 degrees the way the frame is?? Good luck with the build though.
Click to expand...

I built it with only the original lower engine mounts so that I can pivot the motor forward some. My current bike has the same issue and with a float adjustment it does just fine. :)
 
mlc216 said:
I built it with only the original lower engine mounts so that I can pivot the motor forward some. My current bike has the same issue and with a float adjustment it does just fine. :)
Click to expand...

Don't get me wrong, I like choppers and I am currently working on a cafe project. But with chopper builds and frames it is always a battle between looks and functionality of the frame.
 
Lookin' good now! And yeah, +1 on those forks for sure, something wasn't right with the springer, but then again what do I know? :rolleyes:
 
Just my suggestion, no offense to you at all, just how I would consider doing it.

It would look better if the engine cradle was level, that is my opinion only ;), plate bracing at the frame rear wheel and added triangulation to the neck.

Good luck with the build.
 
Last edited:
TPL said:
Don't get me wrong, I like choppers and I am currently working on a cafe project. But with chopper builds and frames it is always a battle between looks and functionality of the frame.
Click to expand...

Ahh, but sacrificing functionality is all part of the chopper thing! :D At least if my floats get stuck open it'll leak out of the carb filters rather than into the cylinder? haha

pete said:
Lookin' good now! And yeah, +1 on those forks for sure, something wasn't right with the springer, but then again what do I know? :rolleyes:
Click to expand...

Aww pete you know a lot... just maybe not much related to choppers haha. I promise I've not forgotten about the HEI conversion... I'll be testing that out on this bike for sure.

TPL said:
Just my suggestion, no offense to you at all, just how I would consider doing it.

It would look better if the engine cradle was level, that is my opinion only ;), plate bracing at the frame rear wheel and added triangulation to the neck.

Good luck with the build.
Click to expand...

TPL,
The angle of the frame is all part of the 70's style stock rake long fork kinda build that I'm going for... I will be plating in a little more on the axle plates, building some nice sleeves at both of the frame splice locations, and this is similar to what I'm thinking for the stress bar/triangulation for the neck area:
DSC_0478.jpg

DSC_0479.jpg

Of course this is a harley frame and I don't need the top motor mount and I can tie it all together a little smoother since I don't have the original forged neck to deal with. This "beam" shaped bracing I like a lot more because I can curve it around and keep the empty space above the motor while still adding the same effective bracing of a stress bar.

And a seat tube will be added soon I promise!
 
IMHO, this Swede (Mindless) really knows what he is doing and you should follow his recommendation at the steering neck:

1f0ffb79.jpg


BEFORE it snaps off at speed with you on it. :eek:


Daniel
 
7981GS said:
IMHO, this Swede (Mindless) really knows what he is doing and you should follow his recommendation at the steering neck:

1f0ffb79.jpg


BEFORE it snaps off at speed with you on it. :eek:


Daniel
Click to expand...

You think it will even get to speed before it snaps?
 
tkent02 said:
You think it will even get to speed before it snaps?
Click to expand...

NO.

Does it really matter? The engine will have starved for oil and locked up before it goes very far anyway.


Daniel
 
Last edited:
Awww c'mon guys, can we please stop the bickering?

MLC has already gone and revised some stuff and is planning on more and is confident that what he's doing is safe, isn't that enough? I understand y'all want to make sure he's not going to kill himself on it, but I think that point's been somewhat overstated now... enough ranting from me...
 
MLC good to see you in the fold. Ive seen your other ride. Cant wait to see this one done. Dont sweat the couple folks here who know ****e about building a frame or for that matter anything beyond what Mr. Suzuki cranked out the factory. The wishbone will be nice to make the exhaust easier to work with.
 
Oh I'm sorry I was only referring to how the backbone and downtube come together at the top of the neck with a gusset underneath. Stock harley wishbone frames were built like this because the weight of the bike does not induce a bending moment on the neck. They also had a stress bar which I'll be adding something of the same idea to this frame...
 
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