Technical & Reference Section > Tech and Restoration

OG fatgoose 170 update

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rodriguez:

--- Quote from: Gnarlyscoots™ on June 02, 2014, 10:16 PM ---
--- Quote from: rodriguez on June 02, 2014, 09:48 PM ---
I'd consider increasing the size of the box.


--- End quote ---
You boasting again  ;D  Most of us would prefer to see a smaller box but, in this case of requiring a bigger box for the extra stiffness gained, I would have to agree  :D

--- End quote ---

 ;)

 :LolLolLolLol:

oldtired:
i think increasing the size of the chain stay box is the way to go ,  i would assume that goose used this method to get round the flex problem on the original goose frame , as the front end is held solid with the gusset ,  :-\

snoopy72:
A lot of bmx's were prone in the 70's to snapping at  the headstock after big jumps and mongoose used the gusset design on theirs.

snoopy72:
Spent all morning making cardboard templates and then cut these out of a piece of 50 x 20 rectangle box section, they fit great.
I'm going to do 2 types of strengthening and take a chance ! the next stage is paint, the only time it will be built again will be when it's finished.
I'm going to extend the cigarette box and fit a 1976 frame gusset, I think this gusset will look ok because like the 76 model my frame doesn't have a rear brake bridge.
Just waiting for the 2mm plate to arrive and then pop to the engineer and ask if he can drill a nice clean 16mm hole in it, then I can cut out the shape from a cardboard template that i've made from the original specs which Johnny goose kindly took time to take his 76 out of storage, unbox it and measure the gusset for me.
I didn't want to go too wide with the box , I don't want to transfer the problem to another place and make it look wrong to the triangle gusset above it at the top of the seatmast.

Retrodan72:
That looks bombproof, good work.  :4_17_5:

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