The Featherweight Monospine

[m in sc]

Christmas day ride, 2018.  Man this thing runs sweet. (chucks porting does wonders  )




was testing out the V Force reeds and making sure the 3-d printed tailight held up. white sip ties were until epoxy dried holding led strip in.

[~JM~]

That is a cool bike!

[Kawtriplefreak]

I rode it. It rips!!

[retaRD]

So when is this thing gonna have rotobox carbon wheels?
As if it needed to be lighter...

[m in sc]

the 17mm titanium bar is on its way, have the 15mm already. axles. (drop ends will be used for spacers, etc)

[SoCal250]

Dr. Titanium 

[Seizer]

Gonna get some Carbon-Ceramic brakes? That's gotta be worth a couple of pounds.

[Tuck]

(chucks porting does wonders  )

Yes it does!!!!

[teazer]

When I weighed a bunch of conventional forks a few months ago FZR400 were the lightest by quite a margin and with an alloy stem and/or alloy bottom clamp, they could be even lighter. I have a modified GSXR stem in a set of RD350 forks on the drag bike.  That saved a bit.

Might be worth looking at a modern small bike for even lighter/stiffer forks.

[m in sc]

i was actually talking about this 2 nights ago. I will probably go with an aluminum stem and a billet lower tree eventually, but im keeping the stock forks, they work very well with the setup and emulators in them. I mean, im over 100 lbs lighter as it is.  if i can hit in the high 220s/low 230s i'd be blown away. (im in the 238 ish range i think, maybe less with fuel) after the axles i'm going to weigh it on a certified scale.

[Gill]

Mark, which speedo did you opt for?
Frame band swingarm is a masterpiece.

[m in sc]

thanks, Danny did a hell of a job on that frame.

I used a trail tech endurance. some of the models can be powered by AC voltage, or DC. I needed that because all the power on that bike is AC, because, wiring and junk is heavy.  its really good, and it automatically backlights when the bike runs.

https://www.trailtech.net/endurance

[m in sc]

interestingly, this jut got posted on FB by allen tucker. hadnt seen this pic before, but the yellow bike in the pic was basically 'V1" of the lightweight bike , a modded stock frame i built out of spares. I think it was about 35-40 lbs lighter than than a stocker. left to right: cody, me, pete. 2010

[stresa]

Hi Mark,
who was the manufacturer of the fuel tank on the yellow bike? I have exactly the same lying around for years.
Regards Uwe

[m in sc]

i dont know. i got it with a bunch or parts years ago, was relatively heavy fiberglass unit. neat tank though. Lined it and never had an issue. Made a strap to mount it though, was kind of a PIA.