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View Full Version : 2001 Derbi GPR50 restoration



russell jupp
07-03-2012, 06:47 PM
http://i1167.photobucket.com/albums/q630/russelljupp/PIC1.jpg

January 2012....got this from a breakers yard. It runs, but needs a lot of work...
Most of the plastics are damaged, front mudguard missing, nose fairing split, tyres both need replacing, bars bent...

russell jupp
07-03-2012, 06:58 PM
http://i1167.photobucket.com/albums/q630/russelljupp/PIC2.jpg

Engine remained in-situ, I carefully rubbed down, masked and re-painted the frame and swinging arm, rebushed the suspension link, and rebuilt the forks.

chrism15
07-03-2012, 06:58 PM
nice, upside down forks..arrow exhaust good stuff

keep the pics coming ;)

russell jupp
07-03-2012, 07:05 PM
http://i1167.photobucket.com/albums/q630/russelljupp/PIC5.jpg

Rims repainted, new tyres, 2nd hand mudguard newly painted, exhaust repainted, mini indicators, polished yokes and footpeg hangers...

russell jupp
07-03-2012, 07:17 PM
http://i1167.photobucket.com/albums/q630/russelljupp/PIC4.jpg

Plastics repaired with superglue, fibreglass and car body filler. Repainted using in total 1 litre of plastic primer, 2 litres of primer/filler, 6 litres of Rosso Red, and 4 litres clear lacquer.
All done with aerosol cans!
Decals from ebay.

Mr G
07-04-2012, 08:55 AM
This looks like an awesome little project and nice painting, must admit I've got a soft spot for the GPR's :o. I know aerosol cans aren't the body repair mans way of doing things but if time is taken the finish can be brilliant, can't wait to see it further along!

russell jupp
07-04-2012, 05:39 PM
http://i1167.photobucket.com/albums/q630/russelljupp/IMG_0064.jpg

....taking shape now. New brake calipers, hoses and pads. New chain and sprockets.

russell jupp
07-04-2012, 05:53 PM
http://i1167.photobucket.com/albums/q630/russelljupp/IMG_0067.jpg

russell jupp
07-05-2012, 04:47 PM
http://i1167.photobucket.com/albums/q630/russelljupp/DSCF0034.jpg
http://i1167.photobucket.com/albums/q630/russelljupp/DSCF0035.jpg
http://i1167.photobucket.com/albums/q630/russelljupp/DSCF0039.jpg

Almost finished, just mirrors to fit, a few tweaks here and there, and it was ready for MOT...
Rode it the to the MOT testing station, and it passed first time!!!
But not happy with the motor (see my other post about carb tuning issues).
After much re-jetting and fiddling, Ive got it sorted...It starts on the button, revs cleanly to 10,500 rpm, and will happily touch an indicated 100kmh. For a 50cc bike, it is superb, and great fun to ride. I wish I'd had something like this when I was 16!!
Cheers everyone,
Russ

chrism15
07-05-2012, 04:53 PM
nice work mate

russell jupp
07-05-2012, 05:06 PM
Thanks!!
It was really good fun doing this, and a huge learning curve. Ive not worked on a motor like this before, when I was 16 I had a 1976 Yamaha FS1e!
The Derbi is sooo much better in every respect, and really well designed and built.
Cheers
Russ

Michelet
07-05-2012, 05:18 PM
You have done a great job with this bike!
Thought about getting an RS50 for aswell? :rolleyes:

russell jupp
07-05-2012, 05:36 PM
You have done a great job with this bike!
Thought about getting an RS50 for aswell? :rolleyes:

Maybe, but not for a while. The Derbi is for my son, and as it is now finished, my next project is a Yamaha Neos scooter for my daughter...when that's done, I'll have a look for another AM6 type bike to rebuild...
Cheers
Russ

Michelet
07-05-2012, 06:08 PM
Ooops, a word was missing there!
Was supposed to say "Thought about getting an RS50 for yourself aswell?"

Keep up the good work mate!

RS_Patrick
07-08-2012, 10:55 PM
Really nice work on the decals, looks like there factory original.

RonneBear
07-08-2012, 11:08 PM
Looking nice :banana:

apriliamandan
07-09-2012, 10:21 AM
I really do love the twin head light front cowling. The back reminds me of a mito 125, think its the squared off look. I prefure the looks of these than rs50s if im honest so thats saying something!! Lovely colour choice.

russell jupp
07-09-2012, 10:27 AM
Thanks everyone...I too like the look of this little bike, it reminds me of a Ducati, esp the rear lights. Re colour choice, it was going to be either Ducati yellow, or red, and I think red was a good choice!!
Thanks again,
Russ

chrism15
07-09-2012, 03:06 PM
the ducati your thinking of was designed on the mito it think!! :p:

apriliamandan
07-09-2012, 03:40 PM
the ducati your thinking of was designed on the mito it think!! :p:

hahaha cheers for the backing up! ;) Yeah or the other way round lol im not too hot on my ducati's but i think it looks a lil like the 916 and the like. :)

Michelet
07-11-2012, 08:31 PM
Why not paint the rims in the same color?

RS_Patrick
07-12-2012, 04:02 PM
Derbi GPR Russel has is a licenced copy of the Cagiva Mito/Primo 50cc

russell jupp
07-12-2012, 05:11 PM
Why not paint the rims in the same color?

I chose to paint the rear rim blue, because the bike was going to be a DUCATI FILA replica. They have a dark blue rear rim, with a matching lower half of the fairing.
We changed to MARLBORO decals after the rim was painted!!
Cheers
Russ

scottydog
10-05-2012, 10:25 AM
Hey looks really good! I've got 2 of these models, probably will sell one on and keep the other for a race track bike.

apriliamandan
10-05-2012, 12:05 PM
I must admit, these gpr's look very nice indeed! Im falling in love with these racerep italian 50's!!

scottydog
10-06-2012, 06:10 AM
I must admit, these gpr's look very nice indeed! Im falling in love with these racerep italian 50's!!

They are nice aren't they! I wasn't planning to keep the ones I bought, but when I saw them in the flesh, decided I'd have to keep one for sure! Will probably make a fuel tank to be fitted under the tank cover and maybe put a motox 80 engine for track use on it down the road.

ScouseJock
01-21-2013, 08:44 PM
Just bought one of these in a box to rebuild for son. Ours is a 2002 so slightly different.

You have done a very nice job. Anything I should watch out for or any tips