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View Full Version : Difference between Aprilia RS250 Challenge and 250 GP bike?



SpeedDemon77
04-15-2003, 04:11 PM
I'm looking to buy Aprilia RS250 track bike and was wondering what's the difference between production 250 and the one that Chuck Sorensen races in 250 MBNA GP class( I'm not talking about Melandri factory GP bike, that's probably totally different) Is it really detuned? Different suspension? Frame? Ignition? I realize it's much more expensive, but is it based on regular RS250 or it's purposely built GP bike? As a former RS50 owner (with big bore kit) I know that there is huge difference between Aprilia motor and let's say Honda CR80 motor....Honda makes twice as much power and works totally different.... sounds different... Please help.

dowzerr
04-15-2003, 04:17 PM
even the kit gp bike is totally different, it has a dry clutch, rotary valves, completely different engine. makes about 87bhp compared to about 60bhp for a stock bike (mines makes 64) Weighs about 110kgs (stock 140kgs) GP bike needs to be stripped down after every race meeting. It is also a bit smaller and the geometry is more extreme, but it is an awesome bike.

ecumike
04-15-2003, 07:01 PM
Umm... I though Chuck was riding an ex-World GP Aprilia RSV250 racebike?

Duc995
04-15-2003, 08:54 PM
That's right, Mike.

Let's just say that when the chain drive exits on the opposite side of the bike, you can pretty much guess that they are two TOTALLY different animals!!:p

SpeedDemon77
04-16-2003, 10:56 AM
Thanks boys!

That's pretty much what I thought. So do you think I should give it a shot and race Aprilia in 250GP class or I stand no chance there? Aprilia is very appealing to me because of low maintenance and ability to run full season without major rebuilds. Another bikes I'm looking at are RS250 (Honda) and TZ250. Thanks again!

dowzerr
04-16-2003, 11:33 AM
it is an ex world privateer spec, you can tell coz its an RSV and not an RSW (works) model.

twocycler
04-16-2003, 11:35 AM
Speeddemon,

I can tell you our bike makes more than 87hp and at Valencia last year, weighed 98kg with oil and water, and that was before we mounted carbon fiber wheels. Melandri's bike weighed 96kg (the limit was 95kg).

What specifically, would you like to know about our RSV250? I have owned alot of two strokes and think the RS250 cup bike is a damn good motorycle for the money. It shares zero parts with an RSV250 and cost about the same as the two crankshafts in our RSV250.

Thanks,

Rocky Stargel
Team Stargel Aprilia

dowzerr
04-16-2003, 12:20 PM
if your bike was that light with that much power you should have destroyed the opposition at every race surely. A TZ250 should never be able to keep up with a proper GP250.

sphilips
04-16-2003, 12:35 PM
twocycler can you contact me offline

SpeedDemon77
04-16-2003, 12:43 PM
Rocky!

Thanks for replying. From the cost of the crankshafts on RSV250 I can tell that I won't be able to buy complete bike right now. However I want to start racing GP bikes, and it seems like RS250 is a good bike for the beginner. Hopefully I can join your team one day.
So what class can regular RS250 Cup bike race? I've heard that Aprilia Challenge is gone this year...

twocycler
04-16-2003, 01:38 PM
All the RSV250's I have bought (4 in total), were at one point RSW250s. The RSW is just a collection of bolt on parts used in WGP. The factory bike is actually an 'Officiale' model which has even more different parts. All three bikes are very similar.

I was just being honest when I said that our bike weighed 98kg and made considerably more than 87hp. Winning races and championships is a difficult thing. If races could be won on paper, and I would never have to leave home, that would be great.

SpeedDemon, you can race an Aprilia RS250 in numerous LW classes with both WERA and CCS here in the states. The bike will be at a disadvantage to Honda RS250s and Yamaha TZ250s, though.

My email address is twocycler@aol.com

Thanks,

Rocky Stargel
Team Stargel Aprilia

wsmc667
04-18-2003, 12:28 AM
if you are in the SW USA, the rs250 challenge can run 3 classes with WSMC: aprilia challenge, 250gp, and 550 superbike. willow springs is located about an hour north of LA, kind of near I-15.

i looked at the AMA 250GP and figured that i could at least qulify for the race on my Cup bike. :rollin:

:lol: chris

wsmc #667

SpeedDemon77
04-18-2003, 10:28 AM
Chris!

I'm at Willow every third weekend of the month :) I'll probably see you this weekend....