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Leaving aside the concerns Leaving aside the concerns about clamping, which the fix with a bit of tube inserted will probably allay, there is the question of torsional stiffness of the now-open section of boom. Torsional stiffness of a closed tube such as the unmodified V20 boom is orders...

Apologies to Mr Baloga for Apologies to Mr Baloga for blowing mind/boring sensless... I would agree about the higher speed thing. Measurement and a less rough calculation of the moment of inertia of the critical boom/leg/crank/chainstay masses will change things. Do you think there is...

Ok, so I have implemented the Ok, so I have implemented the linearized bicycle stability equations used in the jbike6 matlab software on the open source sage mathematical software which I mentioned in my previous post. This is going to be a bit too theoretical but nonetheless interesting...

Andrew B, you beat me to it Andrew B, you beat me to it re Q factor. :-) Regarding stability, does anyone have access to Matlab software? I ask because some academics who have delved into bicycle stability have produced a Matlab program which calculates how the stability of a given...

Just thought I'd share a simple improvement to my vendetta. I wanted to carry a bag to at least be able to carry a few things on the V. I do have a little tiny triangle bag inside the seatstay triangle for spare tube, patch kit and tire levers, but wanted more room for phone, wallet...

You could try the sks You could try the sks raceblade long http://www.chainreactioncycles.com/nz/en/sks-raceblade-long-mudguards/rp-prod82995 They are split into two parts, in front and behind the fork crown. No mudguard directly under the fork crown, and with a little ingenuity I...

are you sure that the are you sure that the aligning screws are equal distances from the dropouts on both sides? it could be either your wheel OR the aligning screws might be off centre.

It's not mandatory, but I've It's not mandatory, but I've found it makes for a very reliable build. Wheelbuilding is not cost effective for me (I'm too slow, better for me to do something else more productive), but I do it anyway because (A) local shop prices for spokes and rims are very high...

I wonder how much a carbon I wonder how much a carbon fibre (rather than faux fibre) quest would weigh (keeping the front triangle the same. The swingarm and frame look pretty chunky.

catalyst claim 110-180 grams catalyst claim 110-180 grams per set for their carbon fibre covers. I assume 110 is for rather deep section rims (i.e. area of cover is smaller) and 180 for shallow section rims. I wonder if they are counting the tape for sticking them to the rim. So assuming...

drum brake for covered rear wheel I know this may sound wrong, but did anyone consider using a drum brake front hub on the back wheel? then could use plastic film to cover the wheel, and avoid the extra drag of disc brakes? Also a possible solution for pre- version 2 vendetta and Silvio frames...

thin boom or fat A few people have posted about wanting the fatter boom. Given that the whole point of the vendetta is speed, the ideal boom would be one with sufficient stiffness for the job, with the minimum possible frontal area to minimise drag (or at least optimise frontal area and weight...

A carbon mango? Spendy! A carbon mango? Spendy! What's the weight?

fairing Hi larry, No fairing on the v yet. i sold my conversion and its windwrap fairing but was thinking that if i get other house projects done i might attempt a skin on wood frame fairing. As per jim gerwing's experience, knee height and forward visibility are key issues when laid back as...

the shape is a bit the shape is a bit reminiscent of flintstone's brontosaurus earthmover... :-)

yay! Hope you can find some yay! Hope you can find some good prices for the composite materials. If you decide that the twin towers are causing too much crosswind lift you could perhaps fair over the valley with your ever-useful storm window plastic film so that you can still see out front.

SOLD The bike is sold and shipped.

whew, just finished reading whew, just finished reading the thread, what a marathon. Think I'll leave my vendetta with the original slightly flared drop bars as they work really well. Even though the ends of the drops are a bit long, that area does provide some support under the outside of my...

Triangulation of the moving Triangulation of the moving bottom bracket front end (especially if with a Silvio or vendetta boom above the headset) would give the fork much more rigidity than a conventional fork, which should be good for a tandem. Isolation of the reaction forces between each...

With the reduced frontal area With the reduced frontal area and being a tandem,i think big disc brakes would be a must to avoid rims overheating on downhills (albeit at the price of increased fork strength required and weight of the said reinforcement. they all look fun!