DH I haven't named it yet

latheboy

Likes Dirt
I built a bike!!! Well this is V2 as V1 had a mishap and passed away.
Designed, machined and welded each part of this frame all by me.
This is as I took it off the stand for the first time, still needed a bit of cable work but I could ride it.

350430



62°HA
1265mm WB
440mm CS
610mm TTL
-5mm BB
Frame - By me 4130 front, swingarm 6061 Al.
Rear shock - Rockshox something something.... don't remember which one I used
Front shock/fork - Fox 40's
Handlebars - FUN fatboy
Stem - HOPE
Headset - yes
Grips - Streamline cycles
Saddle - yes, stupid I beam thingy
Seatpost - as above
Front brake - HOPE V4
Rear brake - HOPE V4
Cranks - SAINT
Chainguide - Homemade
Chain - Yes, 2 even
Pedals - Yes
Rear derailleur - ZEE
Rear shifter - ZEE
Cassette - Yes
Tyres - Yes 2 of them 27.5"
Tubes - Hell YES
Total weight - 20 Kg :)

How does It ride I hear you ask.

It goes around corners, 62° doesn't feel slow or lazy it just turns in. It stops and it goes forward when peddled too.
It's is very stable over bumps and off jumps, it lands so nice.
At 20Kg I was very happy to find that it wasn't noticeable at all once moving, only when getting it on for shuttles.
We spent 3 weeks at Bright and I rode it every day on everything from Launch to the bottom. Doing a quick calc, I think I did about 500Km of riding in that time for it's first outing.

I did end up with a broken swingarm but have since fixed that and I'm ready to put it back together.
V3 is in the works already as I have a few little things to change but I'm happy with this as it is.
 

latheboy

Likes Dirt
Thanks @Tubbsy, I don't have anymore pictures available at the moment.
When I put it back together i'll take some.
Thanks @creaky ... BOTM??????
Who's going to be the first to say ... Looks like a ....
 

John U

MTB Precision
Sick man. Great work.

Could you have ended up with a simpler design using a chain path like the Norco HSP? Is the advantage less chain movement or is it the your design has greater rear wheel backwards movement (if that makes sense)?
 

latheboy

Likes Dirt
Sick man. Great work.

Could you have ended up with a simpler design using a chain path like the Norco HSP? Is the advantage less chain movement or is it the your design has greater rear wheel backwards movement (if that makes sense)?
Thanks,
It has a lot of rearward travel so having 2 chains stops any issues there. Doing it this way the derailleur "should" have constant tension at all times.
Also the derailleur is right up out of the way.
I can't remember how much off hand, I'll have to look at the CAD model to tell you.
 

BKMad

Likes Dirt
Thanks @Tubbsy, I don't have anymore pictures available at the moment.
When I put it back together i'll take some.
Thanks @creaky ... BOTM??????
Who's going to be the first to say ... Looks like a ....
Ok, it looks like a BMW racelink.
Actually, just had a look at a BMW racelink and yours would need a crazy high bottom bracket to look anything like a racelink.
 

latheboy

Likes Dirt
The BMW is where I first got the idea but changed it up a bit.
Also, I really like the straight line from the top tube to the wheel.

High Pivot are the future.
 

Chriso_29er

Likes Dirt
Not kidding you 'built a bike' lol.
Different definition to when most people say that ha ha.

Excelent work! Looks like a beast. What sort of travel is it running?
 
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