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Get Your Own GPR Camp 4 T-Shirt

Last post by toratora « Sat Oct 05, 2019 3:39 pm
Posted in General Bike Chat
Replies: 1
by toratora » Mon Sep 09, 2019 6:39 pm » in General Bike Chat

First post

If you weren’t able to make it to GPRC4, but still want a shirt well now you can. This year’s shirts were upgraded in quality, and with Derbi,...

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More shirts went out today—thanks for the orders!! :paw_prints:

1 Replies

644968 Views

Last post by toratora
Sat Oct 05, 2019 3:39 pm

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Tire brand

Last post by kaldis12 « Sat Oct 20, 2018 3:59 am
Replies: 2
by kaldis12 » Sat Oct 20, 2018 1:35 am

First post

Hi,
I've looking for a new tire for a while now, but cant decide where to go. For front I want 110/80-17 for the rear 140/70-17. I have looked on...

Last post

Yeah thanks :)

2 Replies

63020 Views

Last post by kaldis12
Sat Oct 20, 2018 3:59 am
Brake masters

Last post by toratora « Wed Oct 17, 2018 10:39 pm
Replies: 3
by kaldis12 » Wed Oct 17, 2018 9:59 am

First post

I saw a few few brake masters on this forum but I dont know which one should i get. I have a 2 piston AJP front brake, but I would like to change the...

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Brembo does make a shorty lever for the RCS. I actually have one on the DRP which came with the RSC15. Which seemed like the correct master to get,...

3 Replies

72783 Views

Last post by toratora
Wed Oct 17, 2018 10:39 pm
Stop That Man!

Last post by toratora « Wed Oct 17, 2018 11:00 am
Replies: 17
by toratora » Tue Dec 20, 2011 11:39 pm
1

2
First post

Long long ago in a... oh wait. :P Okay this is another thread from the past that I'm including for historical purposes. It's simply here to...

Last post

Current day suggestions.

Controls

Stopping
17 Replies

119730 Views

Last post by toratora
Wed Oct 17, 2018 11:00 am
Solutions for GP Shifting Pattern

Last post by grunbay « Sat Oct 06, 2018 5:39 pm
Replies: 2
by grunbay » Fri Oct 05, 2018 8:45 pm

First post

I’m setting up a GPR 50 and would like to know if some of you forum members have any solutions to changing the Derbi from conventional to reverse...

Last post

I love the Senda shifter barrel approach. I'm gonna try that.

Thanks so much!

2 Replies

43887 Views

Last post by grunbay
Sat Oct 06, 2018 5:39 pm
Difference between EBE050 and EBS050

Last post by grunbay « Fri Oct 05, 2018 8:31 pm
Replies: 2
by grunbay » Thu Oct 04, 2018 7:12 pm

First post

I am in the process of building a race motor. I have found a set of cases that are marked EBS050. The crank I want to run only fits the EBE050 motor....

Last post

Thanks, that clears it up for me.

2 Replies

42862 Views

Last post by grunbay
Fri Oct 05, 2018 8:31 pm
Polini Race Ignition with an Accessories Circuit

Last post by kaldis12 « Fri Sep 21, 2018 4:05 pm
Replies: 7
by toratora » Wed Sep 19, 2018 7:39 pm

First post

At just under $500 Polini has brought to market an interesting ignition for those wanting performance with an 80 watt accessories circuit—you know to...

Last post

Hmm interesting, its a realls weird design thats for sure. I would really love to try one out. Just a littlebit overpriced and we dont know anything...

7 Replies

39561 Views

Last post by kaldis12
Fri Sep 21, 2018 4:05 pm
Carb tuning derbi senda 50

Last post by toratora « Sun Sep 16, 2018 3:39 pm
Replies: 3
by Sonathrapt » Sun Sep 16, 2018 2:15 am

First post

Can someone tell me how to properly adjust my derbi senda 50 air screw mixture?Thanks.It is an 07 with stock carb

Last post

Yup you got it. A full turn is 360°, a half turn is 180°, in would be clockwise, and out would be counter clockwise.

English is rather difficult...

3 Replies

32373 Views

Last post by toratora
Sun Sep 16, 2018 3:39 pm
Shifter options

Last post by toratora « Mon Sep 03, 2018 3:39 pm
Replies: 4
by Dangerous Dave » Mon Sep 03, 2018 6:05 am

First post

So there's something I'd like to change about my GPR50. The shift lever is too damn high. I have to physically lift my foot off the peg to shift. If...

Last post

Another option is to try and find some aftermarket rearsets for the Mito. Valter Moto use to make these for the Mito, and they were available from...

4 Replies

31920 Views

Last post by toratora
Mon Sep 03, 2018 3:39 pm
Indicator relay issue

Last post by Berkeley « Mon Sep 03, 2018 3:06 am
Replies: 2
by Berkeley » Sun Sep 02, 2018 5:51 pm

First post

Hi there,
Today I took the aprilia out as had been sitting for a while while on holiday.
I got back home and found a buzzing from the indicator relay...

Last post

great, many thanks

I had a look, the bulbs were fine but just a tiny piece exposed wire on the rear indicator that was shorting out as causing it...

2 Replies

27040 Views

Last post by Berkeley
Mon Sep 03, 2018 3:06 am
Help with derbi senda 50

Last post by Sonathrapt « Fri Aug 31, 2018 1:41 pm
Replies: 4
by Sonathrapt » Fri Aug 31, 2018 5:06 am

First post

So my bike won't start.When i bump start it the electronics are like a disco.Im 100% sure that it's either the coils or the cdi.Is there a way to...

Last post

Thank you very much,will try out your suggestions

4 Replies

20520 Views

Last post by Sonathrapt
Fri Aug 31, 2018 1:41 pm
Ignition timing.

Last post by kaldis12 « Fri Aug 24, 2018 2:02 pm
Replies: 2
by kaldis12 » Thu Aug 23, 2018 3:35 am

First post

What could be a good timing for an italkit 94? Its 44mm stroke and 85mm conrod. I looked around but found nothing for the Italkit selettra ignition....

Last post

Well I guess, I will need to try it out. Just a littlebit nervous, I successfully burned a piston through.

2 Replies

15440 Views

Last post by kaldis12
Fri Aug 24, 2018 2:02 pm
How hot is too hot?

Last post by toratora « Fri Aug 24, 2018 12:52 pm
Replies: 2
by Dangerous Dave » Fri Aug 24, 2018 11:58 am

First post

Finally got my beloved GPR50 back on the road after TEN YEARS sitting. The Italkit 80 kit that TT recommended to me has turned it into quite the...

Last post

Assuming that you are talking about H2O temps then:

On a water cooled engine 80°C is fine. 150°C is pretty much deadly, and the closer you get to it...

2 Replies

10988 Views

Last post by toratora
Fri Aug 24, 2018 12:52 pm
Euro2 or Euro3

Last post by kaldis12 « Fri Aug 24, 2018 11:48 am
Replies: 6
by kaldis12 » Tue Aug 21, 2018 1:48 pm

First post

Thanks for the info :) Just gathering some information for my new engine build :) It will be propably a d50b engine. What's your opinion about d50b...

Last post

Ooh I didn't seee thaat!

6 Replies

15077 Views

Last post by kaldis12
Fri Aug 24, 2018 11:48 am
Malossi vl6 vs V-Force reeds

Last post by kaldis12 « Tue Aug 14, 2018 12:26 pm
Replies: 2
by kaldis12 » Tue Aug 14, 2018 10:32 am

First post

What do you guys think? Which one has better throttle response and performance? Currently I have vl6 reed, but Im think I may buy a Vforce 2 or 3. Is...

Last post

Thanks :) looks like I will stick to my vl6 reed, maybe later I will get one :)

2 Replies

12221 Views

Last post by kaldis12
Tue Aug 14, 2018 12:26 pm
Motor Spirit's Bidalot 80cc Build Prep Derbi Euro3

Last post by toratora « Sun Aug 12, 2018 11:39 am

by toratora » Sun Aug 12, 2018 11:39 am

Motor Spirit's Bidalot 80cc Build Prep Derbi Euro3

0 Replies

8581 Views

Last post by toratora
Sun Aug 12, 2018 11:39 am
Aprilia RS4 50 Euro4 Changes for 2018

Last post by toratora « Sat Jul 28, 2018 1:39 am

by toratora » Sat Jul 28, 2018 1:39 am

Thanks to Berkeley we have some photos of the new equipment installed on the Euro4 engine in the 2018 RS4-50 bikes.

This line looks like it come off...

0 Replies

8794 Views

Last post by toratora
Sat Jul 28, 2018 1:39 am
Youichi Ui Repilca

Last post by jkv357 « Sun Jul 22, 2018 7:26 pm
Replies: 2
by SA Ui » Sun Jul 22, 2018 7:50 am

First post

Hi guys. I am as new as they come to this. I recently purchased a Derbi GPR replica. I have no idea about anything of this bike. I would like to know...

Last post

^ toratora is your man.

If anyone can answer your questions, he can.

2 Replies

9990 Views

Last post by jkv357
Sun Jul 22, 2018 7:26 pm
Broken casing

Last post by toratora « Sun Jul 08, 2018 11:39 am
Replies: 13
by Allyboy » Sat Jun 30, 2018 1:12 pm
1

2
First post

I seemed to plaqued with problems this weather. On bike today goin to work and temp light pinged on, I've had this before and usually coming off gas...

Last post

It's a nice look. My bike came black. I like the stock look quite a bit, but after being hit I decided to get brighter. This included my gear too. I...
13 Replies

23559 Views

Last post by toratora
Sun Jul 08, 2018 11:39 am
Bogging down/hesitation at high rpm

Last post by Allyboy « Tue Jun 19, 2018 10:48 am
Replies: 9
by Allyboy » Wed Jun 06, 2018 2:35 pm

First post

Hello, as usual I'm after some advice. I've just done a top end rebuild on my gpr 50. I replaced it with an airsal tech piston/barrel kit. Once I...

Last post

Hello again. My bike has been at the shop for a few days as it needed an mot. I also asked them to look at my misfire issue and they found the cause....

9 Replies

18089 Views

Last post by Allyboy
Tue Jun 19, 2018 10:48 am
Derbi Case Upgrade Coming from TCR

Last post by toratora « Tue Jun 19, 2018 8:39 am
Replies: 8
by toratora » Mon Nov 06, 2017 11:50 pm

First post

Not to be out done Team Cristofolini Racing has some serious cases coming out for the Derbi Euro3. I think I'm about to pop a gasket!!

In the...

Last post

We raised the bar.
Again.
Here is out last creation, the Derbi T.C.R 100cc Engine.
Probably our best creation ever.
Net price for Crankcase + Clutch...

8 Replies

29374 Views

Last post by toratora
Tue Jun 19, 2018 8:39 am
Gpr 50 ebs/ebe starter motor

Last post by Allyboy « Mon May 21, 2018 11:01 am
Replies: 12
by Allyboy » Sat May 19, 2018 11:12 am
1

2
First post

Hello, I'm looking for some help. My starter motor is on its last legs. It jams quite often and I need to rock it in a high gear to get it out....

Last post

Cool, I think my bendix is the issue! When I get the starter I will have a play about with it and report back. Thanks for the help so far
12 Replies

23993 Views

Last post by Allyboy
Mon May 21, 2018 11:01 am
Advice on top end rebuild

Last post by toratora « Wed Apr 25, 2018 4:43 pm
Replies: 5
by Allyboy » Sun Apr 22, 2018 12:09 am

First post

hello all, I need some help/advice on my top end rebuild. I currenly have a derbi gpr50 with ebe/ebe engine with metrakit 50cc top end,full arrow...

Last post

If the cylinder is in good shape it’s probably fine to just do a piston refresh. Make sure to replace the wrist pin and little end bearing too.

5 Replies

13857 Views

Last post by toratora
Wed Apr 25, 2018 4:43 pm
Bike wont turn over?? Good Spark and clean carb

Last post by chadzilla1 « Thu Apr 19, 2018 8:05 am
Replies: 14
by chadzilla1 » Mon Apr 09, 2018 10:38 am
1

2
First post

I have a 99 RS 50, ok so for last 3 months it sat at parents house while I traveled, I had them start it once a week so the gas wouldnt gum up in the...

Last post

lol now the key doesnt work damn electrical gremlins. I need a new gas cap mine leaks when I put the tank straight up and I need a seat lock, Ive...
14 Replies

23439 Views

Last post by chadzilla1
Thu Apr 19, 2018 8:05 am
All the years of production and color of DERBI GPR 50 R

Last post by toratora « Mon Apr 09, 2018 7:07 am
Replies: 3
by RemS » Sun Apr 08, 2018 9:26 am

First post

Hello to all
Somebody would have he a file photos which would allow to know every model/color for every year of production of the DERBI GPR 50 R?
I...

Last post

I have quite a few, and with effort they can be found on the web. Unfortunately I wont have the bandwidth to get to it any time soon. I leave for...

3 Replies

11848 Views

Last post by toratora
Mon Apr 09, 2018 7:07 am
Turning a new page for the GPR

Last post by toratora « Thu Jan 11, 2018 10:16 pm
Replies: 11
by Karim » Tue Nov 21, 2017 3:45 pm
1

2
First post

My bike decided to lock up the rear brakes as I was going into a sharp speed bump and I didnt handle it very well. Fairings are done. Handlebar is...

Last post

The rubber bit fit perfectly to mate the expansion chamber and the pipe. It was tighter on one end than the other. Are you sure it's not for that?...
11 Replies

33119 Views

Last post by toratora
Thu Jan 11, 2018 10:16 pm

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