Current Projects chat and miscellany

NurseHolliday
thats nice along the same lines as mine but you seem to know what your doing, but looking at yours i need some sort of rise for my bars.?

I love those forks. Spotter is the go to guy for bar inspiration.

Got my Spotter bars yesterday, so happy with them, they is purrfect.

NurseHolliday I will give you one free bar plug for each spacer you remove.

I'm a big fan of taped risers though so really liking that.

^ this! +1

^ With the possible other benefits of the longer cranks make it easier to get up to speed, but the shorter cranks make it easier to maintain given speed?

Gah, did you actually read my post?

It's the exact opposite, shorter cranks mean you can accelerate quicker and spin faster, longer cranks make it easier to maintain speed.

You might think that, but you are wrong

Yes it is.

No, it's not. I agree with everything else you said, but I'm not wrong.

There are proven benefits to shorter or longer cranks. People may make the choice on an arbitrary basis (arbitrary meaning based on random choice or personal whim, rather than any reason or system) but I'm not for my new road bike because I prefer spinning, so it's 165mm for me.

This is based on reasoning from the evidence available (various studies into the effects of crank length, which all come to the same conclusion).

So no, it's not arbitrary at all.

Gah, did you actually read my post?

It's the exact opposite, shorter cranks mean you can accelerate quicker and spin faster, longer cranks make it easier to maintain speed.

Yes I did read your post, but as I was still trying to understand, I asked for clarification.

Also, I take it that what you said above was for the same Gain ratio like I was asking, or was it the same gearing for both crank lengths?

Oh, and thanks, for replying, kinda of getting confused by multiple points of view and trying to actually understand it.

So, if I want to increase my cadence a bit, but maintain my overall speed, I would calculate it so that my gain ratio remains the same for both crank lengths?

I've not read many of the previous crank length posts, but going from something like 170mm to 175mm is only a change in circumference of less than 3% which I don't think is huge.

nice one nurse! That looks entertaining!

ll it does is that it give you the illusion that you're spinning/grinding better.

You should have seen their faces when i asked for an adapter for my 'old fashon' pump, "no you cant buy them anymore" am i really that old, you used to be able to walk into any hardware store on your local parade and they would have 2 types of plaid/cloth covered adapter that screw into any bike pump, now you can only get the car type and a little adapter for the smaller one on my new 700c's

I can still got those easily in my lbs and even in my local diy shop, which is thankfully doing very well, not living in a city probably helps.

yep, get yourself down to wilkinsons!

Crawley has been sucked clean of all small shops by the big arse chains. shame i love a private shop.

I'm pretty sure you can buy those extensions in ASDA and Tesco...

Don't fight it.

longer cranks make it easier to get up to speed, but the shorter cranks make it easier to maintain given speed

shorter cranks mean you can accelerate quicker and spin faster, longer cranks make it easier to maintain speed.

Glad we got that sorted. You're both wrong.

If gain ratio is held constant, crank length is irrelevant over a wide range. It's irrelevant to acceleration rate, and irrelevant to constant speed cycling. Fuck, even Archimedes got this 2000 years before bicycle cranks were even invented; if you make the lever longer, you don't have to push as hard but you have to push further. The surprising thing is not that this has been proven time and again in laboratory tests, but that anybody would ever have thought otherwise. You don't get owt for nowt.

Not only that, but changing crank length while holding gain ratio constant isn't even changing our load/speed regime; for a given power output and a given gain ratio, pedal pressure and foot speed are constant. All we are changing, very slightly, is [1] the range of angular articulation in the leg joints, typically making far less difference to any individual by traversing the full range of commonly available crank lengths than we are imposing on different individuals by manufacturing such a narrow range and [2] the repetition rate, again over such a narrow range that nobody has been able to determine any significant difference.

i love a private shop.

Recently finished my all NJS 58cm Samson track build. It may be for sale next month after a track event in Nagoya because after finishing it, I realized I could have purchased a pretty decent car for the money I spent haha. All in all, it is an incredibly nice bike to ride and all the parts are top quality. Spared no expense :D

Frame: 58cm Samson ridden by 2000's keirin pro champion Masato Kaneko
BB: Sugino 75 NJS
Headset: Hatta Super Deluxe NJS
Wheel/Hubs: Araya Gold/Dura Ace 7600 NJS
Crank: Dura Ace 170 NJS
Pedals: MKS Royal Nuevo/MKS steel toeclips/toshi singles
Chainring: Sugino Gigas titanium 52t NJS
Cog: Sugino Gigas titanium 16t NJS
Saddle/seatpost: Kashimax five gold NJS/Nitto 27.2 30mm rails NJS
Stem/handle: Nitto Jaguar 110/Nitto B125

Both of those have closed round here now too! ;)

There was some light in evans. a young guy (not hipster) says "im just building a fixie" and becons me round the back of the shop and he had been given an old race frame.and forks. could not tell what but he was on the right track. He was the only one in there not peacocking like Keith Lemon.

(un)fashionably late to the 2012 slave party....

Those bars, my eyes, etc. Blame Spotter, I saw the wide bars on his Leader and loved it.

[

Does using the most awkward kind of grips for the bar in question, enhance the slaveness?

I was in my local Evans yesterday, its one of these warehouse style ones with offices, so most stuff you have to look up on a screen and get them to send one down just to look at it, i wanted to try some bars.

I asked why they did not carry velcro straps, i was then talked down to by to young hipsters about the small buisness and the reason there are no small bike shops in our town anymore.

You should have seen their faces when i asked for an adapter for my 'old fashon' pump, "no you cant buy them anymore" am i really that old, you used to be able to walk into any hardware store on your local parade and they would have 2 types of plaid/cloth covered adapter that screw into any bike pump, now you can only get the car type and a little adapter for the smaller one on my new 700c's, oh, there are no hardware stores left round here because of b&q and the like.

If i ever win the lottery, i'm opening a local bike/skate/hardware/butchers/greengrocer/fishmonger/florist/bakers/offlicence,

oh bugger, thats a supermarket.

i feel old today, hahahahahahahaha.

Those adapters were shit. Good riddance. For a start they were predominantly for woods valves which are the most irritating contraption in the history of bicycles. And furthermore they leak air, so are impossible to use to get your tyres to anything higher than 20psi, but then the kind of pumps you attach them to cant manage that either.

Have all the stuff for my bob now, it just needs respacing and a FD shim. Im going to ride it around and see how it feels, but the brakes and all the clamp on cable guides are going to do my head in i know it now.

In future, would you guys say that dropping £200 for a respray and braze ons is just money wasted when for £300 i could sell the frame to someone who could use it in its current state and just buy a new BJ frame? Mainly because the work done, still leaves the problem of the long reach brakes.
Mental dilemma

Is that a question?

Respaying a bike will almost always = loss

You should do it because you want a fresh/new paint job. IMO its usually not worth it. As you said, you could have just sold the frame and put it towards getting exactly what you want. The only thing is second hand frames dont always come up exactly how you want them so sometimes to get what you want...etc.

My only worry is, if i get this respaced to 130mm and decide i want to just get something with the relevant brazeons and brake clearances it might be harder to sell on as then the spacings too wide.

think im worrying over nothing ill just build it up ride it and take it as it comes