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Category Archives: downhill bike

The Sapien

29er bike, 650b custom frame, bicycle, brazed, custom frame, custom mtb bicycle frame, custom tips, downhill bike, hand built bicycle frame, hand built custom bicyles, lugged, machinery, primate 29er bicycle, primate frame, tools, Welded, workshop0 comments

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Well this is one special ride , a good mate Steve Hinchliffe test rider for mountain biking Australia told me he had come up with a great single pivot frame idea I was keen as to get involved . Steve had come up with a great linkage design using the linkage programs , I took the points from his design and transfer it to my auto cad program and create a frame based around the suspension positions . Being a prototype I wanted to build a frame for my self to start with to make sure it all worked and nut out any bugs before I built one for my mate . The main frame came together pretty quickly , I then spent a bit of time working out how I was going to construct the swing arm . As with all my builds i like to try new things and test new ideas and this build gave me a chance to try something that I have had in mind for a long time. I love the look of the lattice sub frame on ducati moto’s and had wanted to do something similar on a bike and this swing arm turned out to be the perfect opportunity. This frame was designed to be a 29″ frame but I have been very keen on the 650b wheel size so I added a couple of changes to enable the ability to run either wheel size , to this end I use my eccentric BB to be able to change the bb Hight and with a 200x 57 shock for the 650b and 200×50 for the 29″ wheels and a very short 420mm rear wheel length and 6″ travel this was looking like a great bike .next was the finish, I played with a couple of color ideas but with all the beautiful fillet brazing I wanted to try the clear powder coat again and the boys at advance abrasive blasting did a spectacular job as always 😉
As with all new projects till you get to ride your new creation you can never be sure how it will behave , well first ride blew me away this bike climbed amazingly and held it own even better on the down hill run but being something I had created I needed external input to see if what I thought shared buy others , enter Steve the prefect tester as he is on all the latest industry bikes every for this work , well his first quick test ride ended up stretching out to over an hour ride ( as I sat in the park weighting ) and the smile on his face pretty much told me what he thought 😉 truly a special riding bike . I am refining and modernizing a few things but I will be offering this frame as a custom production frame . Keep an eye out for the next Sapien incarnation .
Stay upright

6″ is more than enough

26" custom frame, bicycle, brazed, custom built bicycle frame, custom built hard tail street frame, custom mtb bicycle frame, custom tips, downhill bike, hand built bicycle frame, hand built custom bicyles, machinery, primate frame, single speed, tig bike frame set up, Welded, workshop4 comments

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Well it has been a couple of years since I first came up with the idea of building a short travel bike . lots of time spent on auto cad working out angles geo and clearances, originally I had planed to get some plates CNC cut and have the swing arm as a bolt together unit but as happens I kept putting other (paid jobs) ahead of this build . I have been working on a new suspension frame design with a good mate who is a gun when it comes to suspension design so I figured now was a good time to revisit my half finished frame re working the swing arm design to be more in tune with the style of frames I am planing to build in the future. To this end I learnt a lot and I’m very happy with the end result, I’m looking forward to seeing how she performs on the trail.

Stay up right 😉

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The first ACBS

24" custom build, bicycle, build your own bike frame, columbus tubing, costom scooter, custom built bicycle frame, custom cyclocross frame, custom forks, custom frame, custom hand built track bike frame, custom mtb bicycle frame, custom tips, downhill bike, fixed gear, fixie, hand built bicycle frame, hand built custom bicyles, lugged, machinery, primate frame, single speed, tools, Welded, Wet Sprayed, workshop0 comments

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Well I just got back from the first Australian custom bike show , and what a weekend it was . There was an amazing selection of beautiful bikes and accessories on display from all the builders in oz but the best part had to be that all the builders where in one room ( to my understanding it the first time it’s happened over here ) this gave punters the opportunity to put a face to the people they had heard about or been following and to see up close the workmanship on display , and from a builders perspective it was fantastic to see what others are producing and through around ideas on what people use and why . All in all it was an amazing event and may thanks go to Andy from fyxomatosis for organizing the event , and I’m already working on ideas for next years show . Hope to see you there .
Stay upright
For more photos of the show check out fyxomatosis.com and go to ACBS link or check out my primate frames face book page .

The little rig is growing

26" custom frame, bicycle, downhill bike, hand built bicycle frame, hand built custom bicyles, Welded, workshop0 comments

Hear are a couple of shots of my latest project as it starts to the shape up .

This is my little rig she is a 6” travel duel suspension frame, I designed this one based a single pivot suspension sys with a 200mm air shock.

I wanted a simple suspension sys that was effective and didn’t rely on the shock to provide all the performance of the suspension, to this end I went for a direct BB pivot based around a set of profile cranks basically I have an American press fit bmx bb shell on the frame. I then have two CNC’d plates that carry the same size bearings in them as are on the BB. They then fit on the 19mm axle and bolt the swing arm together.

All in all a nice clean sys that runs on solid bearings and does not have a crap load of linkages to flog out or be maintained.

I have learnt a lot from building my big rig about how to design component to be easy to fabricate as it is all fine to design a very elaborate sys but it is a very referent thing to then produce said piece especially if they are only single units, things starts getting very expensive when you go down this road.

Big John is fabricating the plates for the suspension for me at the moment, meanwhile im working my way thru the rest of the build. The front triangle went together very well and looks the business. The rear swing arm has worked out well so far I have a bit to go on it yet but that is the best bit of building a completely new design, working out how to build it and seeing it evolve into the vision in my head.

I have been enjoying this build so far and I am looking forward to seeing this one on the trails.

Keep an eye out for future posts as it all comes together .

Tarn

Keep upright..

Licorice All Sort

26" custom frame, downhill bike, primate frame0 comments

Just got my baby back from Star Enamel, Pete really went to town on this one. The pictures don’t do it justice. Can’t wait to see it built up and rolling.

The back end

26" custom frame, downhill bike, primate frame0 comments

More Star Enamel goodness on the swing and bars, It’s my licorice allsort bike, sweet and tasty.

I’m Famous!!!

downhill bike, fixed gear, hand built custom bicyles0 comments

Made it to the big time, been spotted on the Fyxomatosis website, thanks Andy, some beautiful shots!

I'm Famous!!!

downhill bike, fixed gear, hand built custom bicyles0 comments

Made it to the big time, been spotted on the Fyxomatosis website, thanks Andy, some beautiful shots!