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| Hog |
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Hog
L Plate Warrior
Joined: 05 Jul 2012
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| hmmmnz |
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hmmmnz
Super Spammer
Joined: 22 Aug 2006
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 Posted: 07:00 - 05 Jul 2012  Post subject: |
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probably not to bad actually, max torque is at 3250rpm,
and you get about the 33hp limit it those revs any way
you are aware that they weigh nearly 400kg!!!
wouldnt be my learner bike of choice, but each to there own,
myself id be looking at an old bandit 600, something that will take a crash easily, and parts are plentiful and cheap,
good luck 
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the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches |
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| Itxi |
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Itxi
Scooby Slapper
Joined: 19 Sep 2011
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| Posted: 08:07 - 05 Jul 2012 Post subject: |
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I thought there was still a maximum engine capacity even if they were restricted?
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Hastings Direct, Scum you say? |
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| _matt |
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_matt
Trackday Trickster
Joined: 08 Jun 2012
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| Posted: 08:14 - 05 Jul 2012 Post subject: |
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https://www.1stopinstruction.com/a2restrictedlicenceeastlondon.html
according to that, it says "regardless of engine size" so i dont think it's limited.
I wonder, if you have an older bike, if you get it tested on a rolling road (my local garage has one) and it turns out that enough horses have escaped from the engine over the years that it's under 33bhp (even if, brand new, it'd be say, 50bhp), does it still need restricting? Cos technically it'd be under 33bhp, even if it's not meant to be
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1990 Yamaha XV 535 (Alive Again!) / 2007 Jinlun Texan 125-11 (formerly 2k3, wrong details, now going rusty in the back garden ) |
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| Rogerborg |
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Rogerborg
nimbA
Joined: 26 Oct 2010
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| Posted: 09:13 - 05 Jul 2012 Post subject: |
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There's nothing, not any hint, in the current law about any requirement to have a bike restricted. All that matters is whether it is or isn't capable of producing a "net power output" of over 25kW (or 0.16 kW/kg...)
| Itxi wrote: | I thought there was still a maximum engine capacity even if they were restricted? |
Nope. There's a maximum power-to-weight[1] of 0.16 kW/kg, so a bike nudging the 25kW power limit can't weigh less than 156.25kg[2].
I'm led to believe that a Road King might weight very slightly more than that... 
Note that it's presto-chango with the new categories next year[3], but that won't effect existing A<=25kW holders.
[1] It would be technically correct - the best kind of correct - to call it power-to-mass, since it's specified in kg.
[2] “power to weight ratio”, in relation to a motor bicycle, means the ratio of the maximum net power output of the engine of the vehicle to its weight (including the weight of any side-car) with—
(a) a full supply of fuel in the tank,
(b) an adequate supply of other liquids needed for its propulsion, and
(c) no load other than its normal equipment, including loose tools;
[3] Category A1:
— motorcycles with a cylinder capacity not exceeding 125 cubic centimetres, of a power not exceeding 11 kW and with a power/weight ratio not exceeding 0,1 kW/kg,
— motor tricycles with a power not exceeding 15 kW
Category A2:
— motorcycles of a power not exceeding 35 kW and with a power/weight ratio not exceeding 0,2 kW/kg and not derived from a vehicle of more than double its power
____________________
Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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| MarJay |
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MarJay
But it's British!
Joined: 15 Sep 2003
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| supZ |
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supZ
World Chat Champion
Joined: 03 Feb 2009
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Old Thread Alert!
The last post was made 13 years, 216 days ago. Instead of replying here, would creating a new thread be more useful? |
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