Inherited Grandpa's old Bike. Cafe Time!

[DohcBikes]

The seat is all wrong scrap it now and start over

 

[gordo2472003]

The seat is all wrong scrap it now and start over

Id welcome suggestions.

 

[DohcBikes]

weld the stock frame brace back on and we'll go from there

 

[Tune-A-Fish]

You can cut about half off the fender hanger if you don't plan to use the stock fender, but I suggest you find a splash guard of sorts to run under the seat.

The line shows where the actual radius tops out and the mount goes up from there, just about half, but verify.

 

[gordo2472003]

This is what I was going for and the reason I cut the brace. I would love to be able to have this. Is it not feasible? Can any one give me advice on the best way to accomplish this?

 

[Tune-A-Fish]

That seat is far too minimalist to be comfortable. but can be done with just a little thicker foam.

You need to hide the bracket in the foam and radius the seat under side for the tire(im no seat dude but) I think if you can find an older thick long dirtbike foam and cut it with an electric knife or sawzall with long blade whatever works best for you, carefully cut several lines where the bracket/splash guard goes only as deep as the bracket height with one of the adjustable razor knifes then pick out the little squares. You can shape the foam real fast and easy with a flap wheel in a grinder or a sanding disk in a drill even.

You actually don't need the bracket at all, but something needs to hold the splash guard and that can be the seat pan with an oval shape cut out and a chunk of ABS fender glued in. That bracket is not structural and is only a hanger for the fender and a seat support so it can stay in the crap bin:

 

[DohcBikes]

the bike above is crap. it has a seat height of about 25" and not enough room for front or rear suspension to work properly. another good bike ruined by an amateur.

 

[Tune-A-Fish]

get u some of this:

http://www.airtech-streamlining.com/vintage/vintageseats_dirt.htm

 

[Tune-A-Fish]

the bike above is crap. it has a seat height of about 25" and not enough room for front or rear suspension to work properly. another good bike ruined by an amateur.

Not really ruined, just needs whats done undone and done again the right way ;D

 

[DohcBikes]

Not really ruined, just needs whats done undone and done again the right way ;D

ya that's what I mean. like when I ruin a good girl and it takes some other dude to fix her up.

 

[Tune-A-Fish]

ya that's what I mean. like when I ruin a good girl and it takes some other dude to fix her up.

You can't really break them... every one is capable of an Oscar.

 

[gordo2472003]

Ok I have broken on the exhaust studs off. The soft metal wont let me get a solid grip to twist it out even with the vice grips. Tips?

 

[Tune-A-Fish]

Welder? if yes grip up a nut and weld inside to stud then while hot turn slow with a wrench

 

[gordo2472003]

nope. No welder :/

 

[john83]

Tried a drill and an easy out?

 

[Tune-A-Fish]

This: is what I like if it comes to drilling, Irwin has a line at Lowes or search eBay for "Matco screw extractor set' I got mine for cheap.

 

[xb33bsa]

nope. No welder :/

the welding a nut on is a very good solution
but you need warm it up with blows thats what it called in nblacksmith talk "warming it up"
beat on it, that is the stub
now i dont mean kill it what you will be trying to do is jar and impact the threads by tap tap tapping the protruding piece
light to medium taps all clock directions,and straight shots on the end with a 1/2 pounder and a flat nosed punch if you cant access easy
if you are mushrooming the stud alot you hit too hard boy
hit it less hard in the weak direction if you aint got a good feel for metal ,or git mad and the red curtain falls,you can break out the casting in the weak direction the port side usually
this will work the threads compacting rust or whatever and just make them loosen up
then you want to get some heat on the surrounding aluminum
put alittle penetrant on the threads and when it starts smoking real good that is 400F or so then it shouild come out clean just gripping it
be patient with it and dont hit it too hard and dont hit it sideways when hot
thats all

 

[gordo2472003]

Welder worked like a charm! Hardly took any effort at all after that. Granted I had to drop $260 on a little mig welder and pay a friend a six pack to learn a thing or two on how to weld but it was all worth it. Its actually kind of addicting. Anyway, with that stud off I was able to install the wrapped exhaust.

 

[MotorbikeBruno]

Fantastic! And you got a new tool out of the deal!! One that is quite useful!! (just remember that you are new and that even though the metal is stuck together, structurally it might not be sound...so stay away from frame mods for a little while )

 

[gordo2472003]

Ok all done for now. More seat work to come later. But for now it's time to finally take this baby out for a spin. First ride in 20 years.


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