50cc - True top speed & BHP

[Hutchysrs50]

from my own personal use, my tzr 50 was pretty kitted out, race cylinder (MK), Race crank, upjettet carb, race exhaust, K&N and a few other things sprockets etc...

anyway, it would do 65mph thrashing it, but then other peoples 50cc will do 75mph no problem?!!

i watched that thing on dave with james may when he tested the fizzys, on the speed camera, restricted it would do the 30mph, but with a race exhaust, and a few other mods, it would accurately do 45mph!

Aprilias RS 50 And yamahas TzR 50 come standard with 1kw!

anything after that i have no idea, i would asume 5bhp with a few mods, 8bhp fully kitted out, maybe a little more.


my 125 is still fully restricted ment to be 15bhp, but i asume 13bhp, and will happily do 70mph without thrashing it!



So basically, has anyone got accurate speeds and bhp readings, from similar tests to james may's or dyno sheets at differnt stages
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Gilera SC 125 - Current

[Blau Zedong]

Put a donk on it.
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18:54:48 Rob Fzs: jews don't give away stuff for free

18:54:59 Rob Fzs: unless its their clothes/ hair/ golden teeth

[tutton]

maybe you should get a yamaha 125 there better
jammin'
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Past: '05 Peugeot XPS '99 Aprillia RS125 '94 FZR600R
Current: '02 ZX636 A1P '51 CCM R30

[T0MMY]

[Hutchysrs50]

[The Artist]

not another thread like this.

[tutton]

needs to be a yamaha 125, otherwise its shit, pass your test and get a yamaha 125 mate.
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Past: '05 Peugeot XPS '99 Aprillia RS125 '94 FZR600R
Current: '02 ZX636 A1P '51 CCM R30

[Kickstart]

Hi

YSR50 managed 5.9hp on a dyno last year (standard, but not a UK restricted moped). On a drag strip earlier this year it managed 50mph (although that was hiding in the fairing and having to look sideways, following a line in the concrete).

12hp is enough for 70~75mph. Power required goes up rapidly with speed. From this test it seems that to get enough power for that you need a ported 70cc kit.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Hutchysrs50]

[Flip]

[andyscooter]

mates ap50 hits 50 and over dont know bhp of it though

and have no written proof

[Knacker]

[Fnatic]

I had 70mph on the clocks of my RS50 but basically laying on my tank. It was hovering at about 65mph for about a mile and a bit before it creeped up to 70mph.

Apparently the clocks aren't accurate so take away 15% or so. Probably about 60mph to be honest.

[cammy mack]

[Hutchysrs50]

[EUMP]

TZR50's a fourstroke?
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C.B.T - Expired
MOD1 04/08/10
MOD2 10/08/10

[Hutchysrs50]

[Skudd]

[Moonie]

I had one of the older GPR50s (pre-AM6 and therefore faster).

When the speedo said 75mph, the GPS box said 49mph.

That was standard other than a Metrakit Exhaust.
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Don't practice it until you get it right, practice it until you don't get it wrong.
Presenting the one and only Chinkmobile

[Hutchysrs50]

[Hutchysrs50]

[Mudskipper]

[tutton]

Im wasted on some people i really am arnt i?
by the way have you got a yamaha 125 yet?
there faster than hornet!
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Past: '05 Peugeot XPS '99 Aprillia RS125 '94 FZR600R
Current: '02 ZX636 A1P '51 CCM R30

[shaun_04]

this thread's shit!

[Ariel Badger]

IOM TT 1977..
S Graham 50cc Suzuki 1st average speed 82.89 mph. Fastest lap 85.19mph.
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Bikers make great organ donors, get 115 on your licence today.