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Wayward 2003 GPR

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al_pritchard
Posts: 65
Joined: Sun Jan 09, 2022 2:15 pm
Location: Atlantic Highlands, NJ
Replica: 2003 Derbi GPR 50cc
x 9
x 82

Re: Wayward 2003 GPR

Post by al_pritchard » Tue Feb 21, 2023 5:52 am

Finally got to the task of adding a mounting flange to the pipe. I have been dreading this since the get go. I'm not that good at brazing. I'm lucky that my wife has a jewelers torch - propane and oxygen. And this was on the limit for what it can do. Fingers crossed.

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User avatar
al_pritchard
Posts: 65
Joined: Sun Jan 09, 2022 2:15 pm
Location: Atlantic Highlands, NJ
Replica: 2003 Derbi GPR 50cc
x 9
x 82

Re: Wayward 2003 GPR

Post by al_pritchard » Fri Oct 20, 2023 8:33 am

It’s been a hot minute. But I thought I’d update the group on my status.

First off, it runs! Still need to get it idling but it feels strong all the way up to 11,000. I’m so excited!

Also finishing up the paint. Changed direction and went white. 2 coats of color, sand to 1000 between coats. Then sand 2000 and 3000 before clear coat. The MAX 2K is amazing, and fire safe. Can not be happier. Next is getting the decals ordered, so stay tuned.

1st Start! Click the image to see the video

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User avatar
benito brz
Posts: 129
Joined: Fri Sep 20, 2019 1:26 pm
Location: France
Replica: Derbi GPR 50 2003
Aprilia RS4 125 2014
x 99
x 92

Re: Wayward 2003 GPR

Post by benito brz » Sat Oct 28, 2023 1:21 pm

The engine is turning great
You are doing a great job with it
Can't wait to see it completed :D
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User avatar
al_pritchard
Posts: 65
Joined: Sun Jan 09, 2022 2:15 pm
Location: Atlantic Highlands, NJ
Replica: 2003 Derbi GPR 50cc
x 9
x 82

Re: Wayward 2003 GPR

Post by al_pritchard » Thu Nov 02, 2023 8:40 am

Quick mid week update. the vinyl decals cam in today - super excited! Still working out final placement on the side fairings. But LOVE the logos on the fake tank.

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User avatar
al_pritchard
Posts: 65
Joined: Sun Jan 09, 2022 2:15 pm
Location: Atlantic Highlands, NJ
Replica: 2003 Derbi GPR 50cc
x 9
x 82

Re: Wayward 2003 GPR

Post by al_pritchard » Sun Nov 05, 2023 6:34 am

Some end of season thoughts…

Didn’t get the bike on the road anywhere near when I wanted to - lots of around the house projects, and building a green house took most of the summer.

But WOW! This this is amazing! :motorcycle2:

She doesn’t start making power until around 7,000 RPMs. Then just keeps pulling. I’m trying to keep her under 10,000 RPMs until we get a couple of heat cycles. But it’s apparent she will keep pulling well above 10,000. So looking forward to spring.

Current setup:
Airsal Extream 80cc kit
SCR Corse Racing Line pipe
Dellroto PHBG 21 carb
96 Main Jet
262 AU Needle Jet
50 Idle Jet
60 Starter Jet
40 Slide
W7 Needle 2nd slot from the top
PreMix 32:1
Pump 94 Octane
NGK B10 ES Plug
Plug Gap 0.020 / 0.508mm

And we have a couple of projects for winter. She is very hard to start with the starter. To the point I need to use a jump pack. And even then it’s a challenge. But she bump-starts with no problem. She also wont shut off when I hit the kill switch, or turn the key off. So I ether have an electric problem, or the CDI or Stator has left the chat.

I’ll do a bench test of the CDI before ordering a new one. And the harness will get re-built with fresh connectors, and new covering.
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VT78racer
Posts: 8
Joined: Tue Oct 22, 2019 6:27 pm
Location: Kentucky
Replica: 2003 Derbi GPR race bike - CR80 transplant
2000 Derbi GPR race/street
1999 Derbi GPR street
x 2

Re: Wayward 2003 GPR

Post by VT78racer » Mon Nov 06, 2023 9:36 am

Looks great! Where did you find the decals?
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User avatar
al_pritchard
Posts: 65
Joined: Sun Jan 09, 2022 2:15 pm
Location: Atlantic Highlands, NJ
Replica: 2003 Derbi GPR 50cc
x 9
x 82

Re: Wayward 2003 GPR

Post by al_pritchard » Wed Nov 08, 2023 1:31 pm

VT78racer wrote:
Mon Nov 06, 2023 9:36 am
Looks great! Where did you find the decals?
Excellent question. I found the images on line, and converted them int PDFs. Then sent them off to a vinyl cutter - I found them on Etsy. Had them in a couple of days. The small logos on the bottom are 5in long, the big Derbi is 13in, and the tank Derbi is 6in.

Happy to share the files if anyone else needs them.
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User avatar
al_pritchard
Posts: 65
Joined: Sun Jan 09, 2022 2:15 pm
Location: Atlantic Highlands, NJ
Replica: 2003 Derbi GPR 50cc
x 9
x 82

Re: Wayward 2003 GPR

Post by al_pritchard » Mon Dec 11, 2023 8:25 am

It’s cold now, so thoughts turn to winter projects. So I thought a couple of photos might be fun.

Couple of areas to tidy up over winter. And some polishing to do! What does everyone think?

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