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- Path: sparky!uunet!olivea!charnel!sifon!clouso.crim.ca!hobbit.ireq.hydro.qc.ca!marcouil
- From: marcouil@ireq.hydro.qc.ca (Luc Marcouiller)
- Newsgroups: rec.motorcycles
- Subject: Re: Need info on EX500
- Message-ID: <C19y8J.ICD@ireq.hydro.qc.ca>
- Date: 22 Jan 93 21:26:43 GMT
- References: <RTARAZ.93Jan21122856@bigwpi.WPI.EDU> <C17x4t.G0x@javelin.sim.es.com> <C19sp8.2F5u@austin.ibm.com>
- Sender: news@ireq.hydro.qc.ca (Netnews Admin)
- Reply-To: marcouil@ireq.hydro.qc.ca
- Organization: Hydro-Quebec
- Lines: 50
-
- In article bade@athena2.austin.ibm.com (Steven A. Bade) babbles:
- |> sturges@oasys.dt.navy.mil (Richard Sturges) tells:
- |> ]
- |> ]The question was to compare the hp of the EX500 and the FZR600
- |> ]Here goes:
- |> ] stock modified weight
- |> ]EX500 45 hp 65 hp 320 lb
- |> ]FZR600 75 85 400 lb
- |> ]
- |> ]These numbers are from the top of my head, and should be pretty close.
- |> ]They also represent real rear-wheel dyno numbers from my bikes, which
- |> ]I will of course describe. Stock means Stock. The mods to the FZR
- |> ]are supersport spec, ie, 5 angle valve job, muzzy pipe and dynojet kit.
- |> ]The mods to the EX are extensive... 550cc, flowed head, larger valves,
- |> ]cams, carbs, etc. (got 145mph at Daytona) This is one of the fastest
- |> ]EX500's in the country.
- |> ]
- |> ]The point is.... The FZR is more powerful, and definitely faster, than
- |> ]the EX. Handles much better. MUCH MUCH better. Get one. (hell, get
- |> ]one of each - or everything - for yourself and compare)
- |>
- |> No its not much more powerful. Based on your numbers the modified
- |> bikes both have the identical power to weight ratios at 4:1.
- |>
- |> The stockers have 7:1 and 5:1 power to weight ratios respectivly.
- |>
- |> Comparing your race preped bikes in this manner the mitigating
- |> factor would probably be handling and rider ability. Sure in stock
- |> from the FZR is more powerful.
- |>
- mmmm... seems to me that you missed something here like maybe air drag!
- If you drove different categories of bike it's kind of obvious:
-
- - at low speeds: low drag, high acceleration force thus the limiting factor
- is weight to hp
- - at high speeds: high drag (depends on aerodynamics: quite close in this
- case), lower acceleration force (same work done thought) thus the limiting
- factor is drag to hp.
-
- Which means, for the physics impaired, that from let's say 40 mph the 30 hp
- bonus will give the FZR a real edge (neglecting other factors). Haven't you
- never noticed that a light standard 650 will almost outperform a big bore
- sport-tourer in city streets while it's the complete opposite on the highway!
-
- Share and Enjoy
-
- Luc
- --
- Luc Marcouiller, Institut de Recherche d'Hydro-Quebec,
- Ninja 900, Nighthawk 650 marcouil@ireq.hydro.qc.ca
-