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Old 06-06-2014, 09:30 AM   #1
woodsrider-boyd OP
Wow, these guys are fast
 
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Joined: Apr 2005
Location: WA
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2002 Derbi GP1 50 Project

Hey folks,

I thought I would start a thread about my new project, a 2002 Derbi GP1 50, since there is hardly any info out there on these Spanish beauties. Just picked it up and I'm chomping at the bit to get into it. Non-runner with a reported coolant leak from the water pump. Was running fine otherwise according to the PO. We will see.



I have a garage full of bike and car projects lined up, but this one may have to jump to the top of the list. Here it is settled in next to a friends Honda 70 that I am giving a spring freshen up to.



Question: can anyone recommend another good scooter forum or two where I can learn about the Derbi and it's Piaggio engine?

I found a few part suppliers and have both a soft copy and hard copy of the service manual so I'm good to go that way.

Been wanting a scooter forever, so hopefully this will work out, can't wait to see.

Ed
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Old 06-06-2014, 11:50 AM   #2
Dan V.
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Looks like a nice one! Luckily you have the Piaggio engine in it, otherwise you might have been fooked. I have a Derbi Atlantis - basically the same engine - and it is one fast and fun scoot. I have a DR70cc cyl installed with a mild pipe and it rocks. The Piaggio engine is the same as in many models of Vespa and Piaggio scoots, so finding info on the engine is no problem, as well as obtaining engine parts. I have a Haynes manual for Piaggio, so that is a must have if you are getting into scoots.

Bad news is - it is a Derbi. Derbi parts are unobtainum here in the US. Was a time when parts were available out of Florida, but Ozzie sold all his stock. You may have to haunt Ebay, or try overseas for Derbi parts.

Good Luck with your project. The GP1 was a top end scoot in it's day - and still very desirable.
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Old 06-07-2014, 10:32 AM   #3
villageidiot
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For most any engine related stuff, try 50cc.nl

They're a mega 2 stroke small bore supersite. I've had good(great) experiences with them. Used to get pallet loads a month delivered.
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Old 06-07-2014, 10:37 AM   #4
woodsrider-boyd OP
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Thanks!

I was able to do just a bit of research before I bought it, and I did note that its quite the little performer and that it had the fairly common Piaggio engine. If it had not I would not have even considered it.

And if I find the top end is toast I am considering going with a 70 cc kit, might as well.

Fortunately I didn't pay much for it, and the guy selling it is a scooter guy, seemed like an honest guy, so I'm pretty sure I'm getting what he described.

Again, we will see. Worse comes to worse I decide its not worth fixing up and sell it as is for what I paid for it, or I part it out and recoup my meager investment.

But I have a history of resurrecting otherwise dead bikes, so I'm hoping for the best with this one.

Let the games begin!
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Old 06-07-2014, 03:39 PM   #5
brianwheelies
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You can make that bike fly! I would get on racing planet USA website and get a shopping list going.

Easy 70mph bike can be made of it.

You could also do a skelley or however they spell it. Strip the bodywork and have a tube framed bike.
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Old 06-08-2014, 09:47 AM   #6
woodsrider-boyd OP
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Thanks for the links guys. Right now the plan is to get it running reliably and safely, probably keep it stock. Maybe put a 70 cc kit on it if the top end is toast.

It will be shared with between myself and my two teenage daughters so I don't want to let them loose on a crazy fast scooter right off the bat, especially since this thing is reportedly pretty fast right from the factory.

If they end up not riding for whatever reason, then yes, perhaps some performance mods if I end up loving it and becoming a super scooter nerd (I could easily see that happening).
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Old 06-09-2014, 12:19 AM   #7
rspratley
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Hi, you can find information here http://modernvespa.com/forum/

Its mainly piaggio but also has other brands.
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Old 06-09-2014, 11:02 AM   #8
woodsrider-boyd OP
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Excelente, muito obrigado!
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Old 06-09-2014, 12:26 PM   #9
scubabiker
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im a member of a website called scootershack.co.uk very good webiste, is yours the version with the stupid chain drive? the engine is the samme as a gilera runner sp50, aprilia sr50 a piaggio nrg 50 and many others, lots of good tuning parts available from places like adrenalin pedstop, pmtuning and a few more.
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Old 06-09-2014, 12:30 PM   #10
scubabiker
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http://www.scootershack.co.uk/
heres the link if it works
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Old 06-09-2014, 09:00 PM   #11
woodsrider-boyd OP
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More good links, thanks!

And no final drive chain, its belt driven.
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