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You only need a dynamo if you are planning to camp out each night. If you take a hotel every fourth or fifth night you'll be fine with batteries (depending on your power needs)
The nullarbor is not that much of a problem for finding a room, actually it's harder elsewhere because the small town hotels close very early, like 8pm, while the Nullarbor roadhouses have long hours.
You're welcome to borrow my battery and charger setup if you want to go without dynamo. -
No, I wouldn't run disc brakes on a fix. It's more the carbon rim thing. After the fucking ballache mine caused I'd go for simple, strong alu rims in 32h built by someone decent. Maybe I'd use Zipp or something decent but not cheap Chinese rims that only really work with tubeless.
I'm not sure I have anything to suit, I mean, I'm going to have a new bike and depending on what it is I may not be able to use some of my current wheels. I have two front wheels - SP dynamo, both CL disc, both 32h, one is QR, one is TA with QR adapter, one has DTSwiss 512db rim one has 65mm deep carbon clincher.
I also have a set of Ultegra hubs laced to HPlusSon thingie rims. They basically did PBP and went into the cupboard. 32h too. All built by @scherritI prefer dynamo, others (I'm looking at your @frank9755) prefer batteries. I love the fit and forget nature of dynamo and you can essentially ride yourself out of electrical trouble, if you fuck up and miss a recharging point. Basically one less thing to worry about/plan for which suits me. It was also my commuting bike and it's lovely not having to mentally remember when I last charged my light batteries... just roll...
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This article suggests an efficient dynamo will cost you up to thirty seconds over 100km when switched off and up to nearly six minutes switched on.
Agree with @hippy's point about one less thing to think about, there is a bit more stress with batteries. There's also a little bit more bulk if you are really short of space, and a bit more hassles if it rains to keep stuff dry.
But I think the gains are bigger. Those articles aren't written with ultra racers in mind. The power output for most of us is lower, after a couple of days, so losing 6 W when you're only putting out 80W is more damaging.
But even on those numbers, 6 min per 100km is 5.5 hours, or 100+km, so still worth having. (It's an autumn ride so quite a lot of dark, + gadgets, means people with dynamos would use them most of the time). -
https://www.gribble.org/cycling/power_v_speed.html
a) 75 + 15kg, defaults, 80W = 22.76kph
b) 75 + 15kg, defaults, 75W = 22.12kph5474k
a) 240.51
b) 247.47~7hrs better off at the end of IPWR without a dynamo. That's IF you ran the dynamo 24hr/day (which I don't), not taking into account any extra weight of batteries and critically not factoring any charging delays.
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You must comply with the following light and visibility requirements:
Two independent front lights and two independent rear lights must be available for use (i.e. attached to the bicycle or carried). The front light must be white. The rear light must be red;
Independent means that both front lights cannot be powered from the same source. Likewise both rear lights cannot be powered from the same source. The same source can power one front light and one rear light.
One of each front and rear light must be fixed to the bicycle or to a secure accessory (eg a rack or saddle bag);
Between 4:00 p.m. and 8:00 a.m. (local time) or at times of low visibility at least one front light (of fixed beam - not flashing) and one rear light must be illuminated;
A rear red reflector must be permanently fixed to the bicycle. Note that the rear reflector may be part of a rear light;
A reflective ankle strap on each ankle must be worn at all times;
Strips of reflective tape must be applied to crank arms and seat stays;
An acceptable reflective upper-body garment (most commonly a vest) must be carried and must be worn between 4:00 p.m. and 8:00 a.m. (local time) or at times low visibility. The reflective garment must be worn over the top of all garments;
Acceptable reflective upper-body garments will use retroreflective materials (reflects light from all angles) which are at least 10 mm wide and placed horizontally across the front and back of the rider, or from the shoulder to the waist or have a reasonable amount of retroreflective material on the front and back.
Reflective piping alone is not considered sufficient.
It is strongly recommended that riders use reflective upper-body garments adhering to Australian Standard AS/NZS 4602.1:2011 class N, which require at least 50 mm wide retroreflective material strips, amongst other requirements.
Further recommendations:
It is strongly recommended that riders wear bright coloured jerseys;It is strongly recommended that riders use multiple rear lights, mounted at different locations (eg chainstay, helmet and saddle bag) during times of low visibility; and
It is strongly recommended that riders add reflective tape or stickers to their bikes and helmets, and attach reflective straps to their bags to assist with visibility from behind.
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Those articles aren't written with ultra racers in mind. The power output for most of us is lower, after a couple of days, so losing 6 W when you're only putting out 80W is more damaging.
Hadn't thought of that.
But even on those numbers, 6 min per 100km is 5.5 hours, or 100+km, so still worth having.
That did occur to me, but I forgot to mention it.
(It's an autumn ride so quite a lot of dark, + gadgets, means people with dynamos would use them most of the time).
I hadn't thought of that either: Oz = sunshine to me. But that could swing both ways, as more use means more frequent charging.
Ultimately though, an ounce of experience is better than a pound of internet wisdom, so I'm not going to argue with you: I'm just trying to bump my post count...
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An acceptable reflective upper-body garment (most commonly a vest)
must be carried and must be worn between 4:00 p.m. and 8:00 a.m.A reflective jersey might be nice with that. Spending most of the day in a vest might not be, as I assume weather won't be that cold. Or at least make sure the vest is aero af.
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Full roster has been posted.
hippy
skinny
Scilly.Suffolk
andyp
Samuli
ewanmac
atk
veganjoseph
Thrasher-
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About
Indian Pacific Wheel Race - IndyPac - IPWR
Posted by
@frank9755
Soma wolverine like sliding dropouts?
I think some bombtrack frames and the flaanimal have them too.
Not sure if the route is the same as last year, but With lights, be prepared for long stretches on the Nullabor where you might not be able to recharge etc.
And last year's route had some pretty hilly bits out of Adelaide and through Fall's creek in Victoria.