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Main Area => General GS500 Discussion => Topic started by: JetSwing on February 16, 2005, 01:28:25 PM

Title: 50cc crotch rocket
Post by: JetSwing on February 16, 2005, 01:28:25 PM
6-speed 50cc sport bike...looks super duper  fast but...:dunno:

(http://www.yamaha-motor-europe.com/Images/2005_TZR_Color_Dark-Silver_tcm26-49990.jpg)
(http://www.yamaha-motor-europe.com/Images/2005_TZR_Photo_02_tcm26-50659.JPG)
Title: 50cc crotch rocket
Post by: dgyver on February 16, 2005, 02:00:32 PM
a lil' 2-smoker
Title: 50cc crotch rocket
Post by: cummuterguy on February 16, 2005, 02:01:51 PM
so is that thing full sized, or a mini?

if were a mini, or just smaller i suppose it would be cool, maybe like a pit bike
Title: 50cc crotch rocket
Post by: weaselnoze on February 16, 2005, 02:05:31 PM
wonder what the specs are on it?  anyone know what it is?
Title: 50cc crotch rocket
Post by: tdan553527 on February 16, 2005, 02:11:08 PM
Pretty sweet, here is the actual link to specs.

http://www.yamaha-motor-europe.com/products/gearbox_50cc/50cc/tzr.jsp
Title: 50cc crotch rocket
Post by: weaselnoze on February 16, 2005, 02:13:48 PM
Maximum power 1.3kW @ 5,500rpm
Maximum torque 2.58Nm @ 5,500rpm


that can be converted to hp and lbs right?
Title: 50cc crotch rocket
Post by: callmelenny on February 16, 2005, 02:40:30 PM
Quote from: weaselnozeMaximum power 1.3kW @ 5,500rpm
Maximum torque 2.58Nm @ 5,500rpm


that can be converted to hp and lbs right?

I get 1.74 hp and 1.9 ft-pounds

:dunno:
Title: 50cc crotch rocket
Post by: alexXx on February 16, 2005, 02:42:11 PM
Quote from: callmelenny

I get 1.74 hp and 1.9 ft-pounds

:dunno:


:?


- alex
Title: 50cc crotch rocket
Post by: Frost on February 16, 2005, 02:42:56 PM
LOL!!!!!!!!!....that can't be right...
Title: 50cc crotch rocket
Post by: treybrad on February 16, 2005, 02:43:44 PM
Quote from: callmelenny
I get 1.74 hp and 1.9 ft-pounds

:dunno:

That's what I get too... that can't be right...

trey
Title: 50cc crotch rocket
Post by: callmelenny on February 16, 2005, 02:48:14 PM
Looks like it weighs about 250 pounds...

My lawn mower has a 5hp 2 stroke ! :lol:  :lol:
Title: 50cc crotch rocket
Post by: ericjmense on February 16, 2005, 03:31:39 PM
(http://www.derbi.com/gpr50racing/fotos/gpr/001n.jpg)

This is a similar bike in cycle world Nov 2004

Its has 7 bhp at 8800 RPM
          4.3 ft. lbs  at 8400 RPM
          52mph top speed
          49mph
          244 lbs dry weight

Price tag of $4000.00 us

Sounds like a waste of money to me I could get a lot more bike for that price.

check it out  here  http://www.derbi.com/gpr50racing/default.htm
Title: 50cc crotch rocket
Post by: Blueknyt on February 16, 2005, 05:08:27 PM
kinda like the Aprilla 50cc

but then, take the yamaha, shoe horn in a YZ80 engine and quiet the pipe down alittle and your good to go
Title: 50cc crotch rocket
Post by: weaselnoze on February 16, 2005, 06:07:21 PM
Quote from: ericjmense52mph top speed

yea i do 52mph down my driveway.  and its 10 feet long  :lol:  :lol:
Title: 50cc crotch rocket
Post by: luke1645 on February 16, 2005, 08:27:38 PM
Quotebut then, take the yamaha, shoe horn in a YZ80 engine and quiet the pipe down alittle and your good to go

if your going to change motors why not go bigger with a 125 or better yet a 250? how nutty would that be, a 250cc race motor in a 244lb streetbike  :cheers:   now thats somthin i would buy :thumb:
Title: 50cc crotch rocket
Post by: ericjmense on February 16, 2005, 08:34:22 PM
I believe that they make those Derbis with 250's but do not sell in the USA
Title: 50cc crotch rocket
Post by: Blueknyt on February 16, 2005, 09:49:22 PM
the frame and swingarm might not be able to take the beating from the larger cc engines but then, who knows
Title: 50cc crotch rocket
Post by: jiggersplat on February 17, 2005, 07:25:39 AM
bikes like these are popular in europe.  since they are 50cc or less, they are classified as scooters and can be ridden without a license.
Title: 50cc crotch rocket
Post by: fettcols on February 17, 2005, 10:21:12 AM
I recall saying the same thing on another post... nice looking bike but I've seen bigger cans holding cheap beer at the 7/11...
Title: 50cc crotch rocket
Post by: stefman722 on February 17, 2005, 11:03:40 AM
Quote from: fettcolsI recall saying the same thing on another post... nice looking bike but I've seen bigger cans holding cheap beer at the 7/11...

You can buy beer at 7/11 down there? I wish.
Title: 50cc crotch rocket
Post by: JohNLA on February 17, 2005, 12:47:32 PM
In CA you can buy Wiskey in the grocery store :cheers:
Title: 50cc crotch rocket
Post by: indestructibleman on February 17, 2005, 01:55:16 PM
wonder how the suspension is.
a 50cc with a killer suspension would be a kick at the track (and in the twisties, though you'd probably have to trailer there).
Jethro from socalsvriders (http://www.socalsvriders.org/) was saying he races in a 50 or 80cc class.
sounded like a lot of fun.

-will
Title: 50cc crotch rocket
Post by: JetSwing on February 17, 2005, 01:55:59 PM
Quote from: JohNLAIn CA you can buy Wiskey in the grocery store :cheers:
must be lots of drunks in cali... :roll:
Title: 50cc crotch rocket
Post by: JetSwing on February 17, 2005, 01:58:34 PM
Quote from: indestructiblemanwonder how the suspension is.
a 50cc with a killer suspension would be a kick at the track (and in the twisties, though you'd probably have to trailer there).
Jethro from socalsvriders was saying he races in a 50 or 80cc class.
sounded like a lot of fun.

-will
my 50cc ruckus sucked....don't know abouot the track...maybe in the twisties :dunno:
Title: 50cc crotch rocket
Post by: fettcols on February 17, 2005, 02:45:18 PM
The beer thing doesn't apply to all states. The fed's let each state decide.
Title: 50cc crotch rocket
Post by: stefman722 on February 17, 2005, 04:08:12 PM
Quote from: fettcolsThe beer thing doesn't apply to all states. The fed's let each state decide.

We can only buy alcohol at Liquor Stores here. Every single store is government owned and operated. You cannot buy any type of alcohol at any stores except at the liquor marts.  Its cool though, getting paid        20$/hour to sell booze. LOL. I work for the government selling alcohol. Gotta love it.  :thumb:
Title: 50cc crotch rocket
Post by: sledge on February 17, 2005, 04:15:46 PM
Here in the UK bikes of 50cc are classed as mopeds restricted to 3hp and 30 mph and can be ridden at the age of 16 on a provisional license while displaying L plates. Its all about safety.