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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

400841 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

63050 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

96700 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

88494 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

87930 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

125878 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

72908 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

64529 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

69069 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

62500 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

59330 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

59447 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

61352 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

64931 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...

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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

61858 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

57815 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

96984 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

39769 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

31024 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

30496 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

30309 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

29906 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

37839 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

29560 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

29493 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

29964 Views

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

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