[thruster]

Well the research and development is just about done just fine tuning the rear shock then we are done.
This bike was a first by a friend of mine and he has done a awesome job on it.
It rides on a 50 mx full custom rear shock by ishock and has a 10.25 x 3.0 the eye bolts are burly as hell and are unbreak (knocking on wood).

 

[seismic]

WOW....that spring have quite some coils !

 

[thruster]

So far the bike is called Bigfoot but I think it should be called Your Mama.
Later I will have more pics the pivot bolt is super burly with big ass bearing no bearing play for this bike.
Hopefully will have the weight sometime this month just need to get down to the bike shop. My guest is that it will weigh under 60 lbs.

 

[particle bored]

looks pretty spindly and underbuilt, if you know what I mean. what's up with that purely XC fork you're running? surely you can get that sled up to 75 lbs if you try a bit harder. maybe a granite seat?

 

[thruster]

More pics

 

[thruster]

This is going to be my new xc bike good for building up the legs

 

[Midget]

Just out of curiosity, why the choice of a 50 mx shock and not just a burlier mountain bike shock? Is it because it's nearly unbreakable, or is there another reason ? I would think that there would be a huge weight difference, but I could be wrong. I've been working on my own design in CAD and am building it around an avy, but a mx shock seems like an interesting idea.

 

[TheInedibleHulk]

One of the better looking homemade's Ive seen. Lose the monster T and you'll be good to go.

PS- Definately change the name. Risse already made a fork called the bigfoot.

 

[Bicyclist]

How much do you weigh? Is it built big for you or built big for no reason?

 

[thruster]

The reason for the 50 mx shock is that bolts and bushings are stronger. As for weight there is not that much difference between a mx 50 shock and a DH shock.
The bike is a Large and built for a friend that dosen't have one right now. The next two will be mediums.

 

[zedro]

The reason for the 50 mx shock is that bolts and bushings are stronger.

since when are M8 12.9 Grade bolts inside a half inch steel pin not strong enough

besides, almost half the aftermarket shocks out there are also used for 50s anyways

 

[kidwoo]

since when are M8 12.9 Grade bolts inside a half inch steel pin not strong enough

besides, almost half the aftermarket shocks out there are also used for 50s anyways

Dude it's MOTO technology. It's obviously better.

Just like all the great outfit designs we borrowed from moto. Flourescent colors rule..........because it's MOTO man!!!!!

 

[zedro]

Dude it's MOTO technology. It's obviously better.

Just like all the great outfit designs we borrowed from moto. Flourescent colors rule..........because it's MOTO man!!!!!

it's true. DH technology is obviously not suited for DH applications.

Know where i can buy number plate side fairings?

 

[konabiker]

Cool that you made it, but that system with the chain + the moto shock are retarded.

 

[thruster]

but that system with the chain + the moto shock are retarded

Would like your input on why.

For the record I didn't build it just helped and gave input but I wish I did.
I feel my friend did a great job for his first bike. I sure couldn't of done it.

 

[monke880]

I think he did a good job, but the concept is weird. I agree that the moto shock is overkill unless you weigh as much as a dirtbike and a regular person combined, and have the power output of a 50.

 

[Sonic Reducer]

did he have the frame heat treated after welding? because if not it might as well be made of mild steel.

 

[DHS]

nice build up.

i just have to ask what it weighs..?

 

[zedro]

did he have the frame heat treated after welding? because if not it might as well be made of mild steel.

not really, annealed 4130 is still stronger than normalised 1020, and the 4130 is basically in the normalized state. The weld zone can give problems those if there are stresses.

 

[thruster]

Not sure what it weighs yet but it feels about the same or just a little more then a Santa Cruz super8. I am betting it weighs under 60lbs. Once the new shock come back we will weigh it.
This bike is Cromo 4130 and can be adapted to any shock.

 

[OGDMFG]

I say keep up the good work , the weight will come down the more you build. Nice job mmm......... 4130

 

[DHS]

my brooklyn tmx is about 60lbs. i like it as is.

 

[ChrisRobin]

Cool...

Seeing your using a 50cc shock, ever think of trying the Fox MXR air shock? It's 10.5" long and 2.9" stroke. It weighs 1.1lbs.