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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

241413 Views

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

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Derbi Euro2 Clutch Spring Upgrade

Last post by toratora « Thu Jan 16, 2020 1:47 pm
Replies: 2
by toratora » Sat Nov 18, 2017 7:49 pm

First post

When the engine has been upgraded to output more power it is a good idea to upgrade the clutch springs, in order to keep the clutch from slipping...

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If the gasket is still in good shape you can reuse it. If it tears then you should replace it. They are inexpensive. :paw_prints:

2 Replies

37596 Views

Last post by toratora
Thu Jan 16, 2020 1:47 pm
Carb Tuning Topics

Last post by toratora « Fri Sep 20, 2019 1:01 pm
Replies: 8
by toratora » Sun Sep 16, 2018 7:39 am

First post

This thread is for techniques, and information relating to carb tuning.

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Dellorto PHVA Diagram 1

Dellorto PHVA Diagram 2

Dellorto PHBG Diagram

8 Replies

63905 Views

Last post by toratora
Fri Sep 20, 2019 1:01 pm
Replica Racer Specifications

Last post by toratora « Thu Sep 19, 2019 9:39 am
Replies: 8
by toratora » Tue Nov 14, 2017 10:39 am

First post

A thread for specifications.

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AM6 Torque Settings

8 Replies

57707 Views

Last post by toratora
Thu Sep 19, 2019 9:39 am
Port Maps

Last post by toratora « Fri Aug 02, 2019 7:39 pm
Replies: 8
by toratora » Thu Nov 09, 2017 11:39 pm

First post

How to Make a Port Map

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First you’ll want to collect your tools. For this you’ll need a sheet of notebook paper, a pencil, easily removable...

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Stage6 Big Racing 88 - BR88 Bore 50mm Stroke 45mm

8 Replies

56247 Views

Last post by toratora
Fri Aug 02, 2019 7:39 pm
Wiring Diagrams for Derbi, Aprilia and More!

Last post by toratora « Wed May 22, 2019 9:39 pm
Replies: 9
by toratora » Sun Nov 12, 2017 1:39 pm

First post

This is a thread for wiring diagrams for the Replica Racers like the Derbi GPR, Aprilia RS 50, etc.

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Aprilia AF1 Futura 50 Wiring Diagram

9 Replies

82237 Views

Last post by toratora
Wed May 22, 2019 9:39 pm
Where to Buy Replica Parts

Last post by toratora « Fri Feb 01, 2019 3:39 pm
Replies: 3
by toratora » Tue Nov 07, 2017 3:39 am

First post

First off I have no affiliation with these companies other than that I have bought parts from them multiple times, and had great experiences....

Last post

Quad Lock has kindly provided a 10% to all GPR Camp readers.

Simply go to their website , use the code GPRCAMP in the discount code box, and a ten...

3 Replies

46673 Views

Last post by toratora
Fri Feb 01, 2019 3:39 pm
How to Fit a Helmet

Last post by toratora « Sat Dec 01, 2018 9:39 pm
Replies: 1
by toratora » Sat Feb 24, 2018 3:39 pm

First post

This video is nearly 10 years old already, but it's still one of the best for teaching folks how to fit a helmet. I highly recommend watching it a...

Last post

The SHARP Helmet Fitting Guide Video

1 Replies

40423 Views

Last post by toratora
Sat Dec 01, 2018 9:39 pm
Leak Testing a Two Stroke Engine

Last post by toratora « Sat Nov 17, 2018 5:39 pm
Replies: 2
by toratora » Sat Nov 03, 2018 9:39 pm

First post

Background
Air leaks can quickly destroy an engine by creating a lean condition. When a two stroke engine becomes lean it’s quite easy for it to...

Last post

ScooterSwapShop is introducing a leak test kit for about $100 with billet plugs. They put together a decent video illustrating the process.

Even if...

2 Replies

43271 Views

Last post by toratora
Sat Nov 17, 2018 5:39 pm
Fluids, Sealants, Chemicals

Last post by toratora « Fri Nov 02, 2018 3:39 pm
Replies: 1
by toratora » Fri Nov 10, 2017 3:39 am

First post

For the transmission I generally run the Motul Transoil . There are two versions. Either is fine. I usually get the one that's a couple of dollars...

Last post

Copper Coat
To seal exhaust ports the copper coat sealants seem to work the best. It's available in a spray, tube, and a can. I prefer the can...

1 Replies

37900 Views

Last post by toratora
Fri Nov 02, 2018 3:39 pm
How to set a Balanced GPR Engine with a Senda Performance Crank

Last post by toratora « Sat Jun 16, 2018 1:39 pm

by toratora » Sat Jun 16, 2018 1:39 pm

It's a strange feeling when you search for help on the web, and your posts on how to do things are the closest you find. :eek:

With the help of my...

0 Replies

35807 Views

Last post by toratora
Sat Jun 16, 2018 1:39 pm
Disassembly and Reassembly of a Derbi Euro3 Engine

Last post by toratora « Mon Apr 30, 2018 12:39 am

by toratora » Mon Apr 30, 2018 12:39 am

ScootFast posted up an excellent video to illustrate how to install a Conti CHR crank on a Derbi Senda Euro3 engine. But this is a great tutorial on...

0 Replies

35872 Views

Last post by toratora
Mon Apr 30, 2018 12:39 am
Derbi Euro2 Transmission Pictorial

Last post by toratora « Sun Apr 29, 2018 8:39 pm
Replies: 1
by toratora » Sun Dec 10, 2017 3:29 pm

1 Replies

36851 Views

Last post by toratora
Sun Apr 29, 2018 8:39 pm
Derbi Water Pump Revision

Last post by toratora « Sat Apr 21, 2018 6:23 pm
Replies: 2
by toratora » Sat Nov 18, 2017 7:13 pm

First post

At times you may notice water, or coolant leaking from the engine near the water pump. There is a weep hole there to alert you that it's time to...

Last post

You can do either, but a little bit of water proof grease wouldn't hurt, and it would make it easier to put in the seals. But it's not necessary.

2 Replies

39745 Views

Last post by toratora
Sat Apr 21, 2018 6:23 pm
Tires: Profiles, Size, and why it’s important.

Last post by toratora « Sat Feb 03, 2018 9:39 am
Replies: 1
by toratora » Mon Jun 20, 2016 7:39 pm

First post

V shape vs U shape profiles

This is one of those recurring topics, and that probably has more to do with learning than the actual reality. In the...

Last post

What and where to get them?

For the RS50, and the Second Edition GPRs with 17 wheels the Sava MC18s are a great choice. In the States Treats has...

1 Replies

37384 Views

Last post by toratora
Sat Feb 03, 2018 9:39 am
Alternative Petcocks

Last post by toratora « Mon Jan 01, 2018 11:29 pm

by toratora » Mon Jan 01, 2018 11:29 pm

Treats carries a number of petcocks that can work to some degree for the GPRs, and 06 and newer RS50/RS4-50 bikes. Although none of them are exactly...

0 Replies

34281 Views

Last post by toratora
Mon Jan 01, 2018 11:29 pm
After Market Shocks

Last post by Rj_666 « Sat Feb 01, 2020 11:59 am
Replies: 4
by toratora » Wed Oct 24, 2018 3:39 pm

First post

This is a post head for after market shocks—as more info becomes available this thread will get filled out.

Last post

I have been VERY pleased with DNM MT-BAG shock on my black RS50, so pleased that I've ordered a second unit for the Silver RS50 !

4 Replies

46420 Views

Last post by Rj_666
Sat Feb 01, 2020 11:59 am
Castle Sockets for 2010+ GPRs, and 1999-2005 RS50s

Last post by toratora « Wed Dec 11, 2019 3:39 pm
Replies: 5
by toratora » Sun Jun 17, 2018 1:39 am

First post

What have people done to source castle sockets for adjusting the swing arm on the 99/2005 RS50, the RS4s, and the 2010+ GPRs? Amazon has a number of...

Last post

I’ve been chatting with Luke over at GB Motorcycles about these sockets and nuts. He checked out this page and based on Berkeley’s measurements Luke...

5 Replies

24233 Views

Last post by toratora
Wed Dec 11, 2019 3:39 pm
Vermont Registration

Last post by chadzilla1 « Mon Sep 09, 2019 3:57 pm

by chadzilla1 » Mon Sep 09, 2019 3:57 pm

Ok so you bought a Grey Market bike, scooter, or car, and it only came with a Bill of Sale. You go to your DMV, or Tag agency in your state and they...

0 Replies

17230 Views

Last post by chadzilla1
Mon Sep 09, 2019 3:57 pm
Yamaha - Two Stroke Engines, Theory of Operation and Diagnosis

Last post by Rj_666 « Sat Jul 06, 2019 10:19 pm
Replies: 1
by toratora » Fri Jun 07, 2019 1:39 pm

1 Replies

17846 Views

Last post by Rj_666
Sat Jul 06, 2019 10:19 pm
Metrakit Catalog

Last post by RemS « Mon Jan 14, 2019 12:07 pm

by RemS » Mon Jan 14, 2019 12:07 pm

Hi—Here is an older Metrakit parts manual. This may help you, as it has for me, to search for parts through references.

😜✌️ RÉMI

0 Replies

18117 Views

Last post by RemS
Mon Jan 14, 2019 12:07 pm
Dave Moss Talks Suspension Tuning - Revalve and Respring

Last post by toratora « Wed Jan 09, 2019 3:39 am

by toratora » Wed Jan 09, 2019 3:39 am

Dave Moss Talks Suspension Tuning - Revalve and Respring

0 Replies

17584 Views

Last post by toratora
Wed Jan 09, 2019 3:39 am
Derbi Parts Interchange

Last post by toratora « Sun Oct 28, 2018 2:39 am
Replies: 4
by toratora » Tue Aug 14, 2018 11:39 pm

First post

This thread is for finding interchangeable parts that come from other bikes, and are exchangeable with parts on the Derbi GPR.

Last post

Sachs MadAss
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1999 Derbi GPR Racing
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Sachs Projector Headlight

Sachs MadAss
The Sachs MadAss is a bit of a different animal,...

4 Replies

23480 Views

Last post by toratora
Sun Oct 28, 2018 2:39 am
Video: How to install the Kickstarter Mechanism on a Derbi Engine

Last post by toratora « Tue Oct 23, 2018 11:39 am

by toratora » Tue Oct 23, 2018 11:39 am

How to install the Kickstarter Mechanism on a Derbi Engine

0 Replies

17361 Views

Last post by toratora
Tue Oct 23, 2018 11:39 am
Riding Tips: Wide-View Awareness

Last post by toratora « Fri Oct 12, 2018 3:39 pm

by toratora » Fri Oct 12, 2018 3:39 pm

I recently attended a Doc Wong event with Keith Code as his special guest. One of the thing covered was seeing wide. Here's an article from Keith...

0 Replies

17360 Views

Last post by toratora
Fri Oct 12, 2018 3:39 pm
F9's Invisibility Training for Motorcyclists

Last post by toratora « Fri Oct 12, 2018 1:39 pm

by toratora » Fri Oct 12, 2018 1:39 pm

F9's Invisibility Training for Motorcyclists

0 Replies

17764 Views

Last post by toratora
Fri Oct 12, 2018 1:39 pm

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