Tikbalang MK2 Downhill Enduro 30

That is so cool. Well done!

This is very cool! Congrats.

looks like a trials bike with a DH fork...

I had no idea a patent prevented you from making something for personal use. Interesting...

I was under that impression too. But the message I received seems to imply that legal action can be taken by the patent owner

In case you wanted to produce it. Which means not personal use. I guess you could also give it away as x ‰ of royalties on 0 USD is still 0.

Just a heads up to my fellow hobbyists.

I received this message from hmcleay

Hi Lan,
Congratulations on your latest frame build. That's super impressive; the welds look AMAZING!
I just wanted to touch base with you to let you know that having the idler pulley mounted on that separate link like that would technically infringe on some patents that I have. You've probably come across my 'i-track suspension' technology already (especially since it shows my logo in the Linkage software too).
Don't worry, I'm not going to get 'legal' on you. I'm totally fine with people experimenting with it for personal use.

However, if you did intend to start making frames like this for sale, then we would need to discuss a licensing agreement.

How long was your lockdown?! Super impressive to pull this all together in a few months (?). What country are you in?

Looking forward to your ride report.

Cheers,
Hugh McLeay
i-Track Suspension

This recalls to mind the incident where Kavenz Cycles had to change their idler location from being on the chainstay to being concentric to the lower pivot.

I wonder if putting the idler on the main frame is patented. Anyone knows?

Sooo how did forbidden and deviate get past this? Did they have to make a deal with Hugh? ...asking for another high pivot friend

Add to that list the new Commencal Supreme DH, Devinci Wilson prototype and the Norco prototype as well. I'm also curious to know.

At a glance, the patent is for mounting the idler on a link. The horst layout of your design means this is a link, not a swingarm. The other models mentioned are all swingarm-mounted idlers. The new Norco shore isn't though. https://patents.google.com/patent/US9168977?oq=Hugh+McLeay

Not the Shore but the unreleased one but I could be wrong and it's mounted to the pivot

The Devici protototype definitely is though

I just realized the split pivot design of the Devinci means it's also a swingarm not a link

It seems he does require a link to be present to carry the idler to it's intended position. I've never looked at that patent before, really interesting! So it would seem having the idler married to the swing arm avoids infringement...

Just file a patent stating a different use case for the pully in the same location. 👍

very nice bike! question : what exactly does the seatstay pivot accomplish along with with the high main pivot and lower mini link?

without the seatstay pivot the rear triangle will bind under suspension travel. Some 100mm travel bikes can get away with relying on the flex of material used but I don't think 210mm can.

I was wondering the same thing as well, if I had to guess it's to lower brake jack and improve suspension response under braking (similar to a Trek ABP or Devinci/Salsa Split Pivot bike). The overall suspension design looks similar to the Antidote Darkmatter, which also has a semi-floating brake to achieve the same goal, but the Antidote uses a linkage around the BB instead of a separate pivot. It's basically a Horst-link suspension but flipped upside down to accommodate the high pivot placement.

Yeah that's just it a flipped horst link. It's to lower the anti-rise values.

Yeah, similar to the Devinci Wilson and Antidote Darkmatter but the rocker link on mine doesn't pivot around the BB

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Nice one!

Exquisite welds and craftsmanship! Extremely well done!

Titanium is the best looking frame material, change my mind.

@_Lan You're not worried about your fabricator selling your design on aliexpress?

I'd rather they not, but I'm not going to lose sleep over it.

I'm all for seeing bikes get developed further, there's nothing particularly unique to the way I located the pivots. Maybe for the look of the bike you can say it's uniquely mine but then again I did get inspiration from other bikes like the Norco Aurum HSP and the Rocky mountain slayer.

Where did you have it made? Waltly?

soooo cool!!

I too am a downduro kind of guy. I have made an old devinci wilson into a downduro. I call it Frankenvinci Wilsonstein.
Dropper post, 11-36 cassette, 28t chainring. Made it into a 27.5f 26r mullet. I'm 5'5" so 26 inch wheels work well for me. No way to attach a bottle though

Cool, some of us want that downhill bike experience but don't always have uplift where we ride. Bike brands should realize this.

Bike of the Day November 15, 2020!

Thanks vital

too beautiful a bike to pick any one thing to compliment, but do you not hit your knees on the bottle cages? cause if not I might have to try that positioning on my bike, I could use more water...

Thanks. It looks even better in person according to some mates.


Only brushed a few times while sprinting otherwise it's like they're not there