Home Forum Members Pictures Contact Events
  #1  
Unread 11-01-2017, 01:26 PM
twinturba's Avatar
twinturba twinturba is offline
Moderator - $ Donating Member
 
Join Date: Oct 2005
Location: San Francisco
Posts: 905
Default Bats Derbi Newd

Ari and I picked up a brand new, and I mean 14 miles from out of the crate new, 2005 Derbi GRP50 Nude Yesterday. This is 1 of 12 that were imported to the US and Federalized by Derbi shortly before they were acquired by piaggio. From what we can tell some were sent back after Derbi West closed up so this is probably the last new Derbi available in the US.


Still has the protective foam on frame and plastic on the shiny bits!



Sexy!


Nude baby!


Bats L.A. Is nearing capacity!


Next step is putting a few miles on!
__________________
Current:Yuki, Carlos, Newd, Aprilia RS10k, Max, Bangkok, Derbi ADV

Past:Marco, Fumi, '16 & '15 RC390, '11 Madass,'98 Chester, '00 Mito, '12 PW50, KTM BR 65, Aprilia BR50, '06 Aprilia RS125, '04 DRD, 08 WR250X, 7x '03 Derbi SM's, 6x 99-04 Aprilia RS50's, 2x Derbi GPR, '00 Aprilia RS250, '99 Aprilia RS250, '95 Cagiva Mito 125, '04 & '95 NSR50R, '90 Honda NS50, '94 Honda RS125, '90 Honda RS80, '88 YSR63 (1st 2stroke!), '89FZ600, '89KLR250(1st Bike!)

I Need Parts!
Reply With Quote
  #2  
Unread 11-01-2017, 01:26 PM
twinturba's Avatar
twinturba twinturba is offline
Moderator - $ Donating Member
 
Join Date: Oct 2005
Location: San Francisco
Posts: 905
Default

Had a chance to put some miles on Nude with the 2 Stroke Extravaganza ride yesterday, unfortunately we realized right away that the bike had the EU restrictions in place making it really slow. Dont have many pics from the ride since we had to cut it short.




Next up will be the "project" part of working through the restrictions so we can fully realize the power of Nude!
__________________
Current:Yuki, Carlos, Newd, Aprilia RS10k, Max, Bangkok, Derbi ADV

Past:Marco, Fumi, '16 & '15 RC390, '11 Madass,'98 Chester, '00 Mito, '12 PW50, KTM BR 65, Aprilia BR50, '06 Aprilia RS125, '04 DRD, 08 WR250X, 7x '03 Derbi SM's, 6x 99-04 Aprilia RS50's, 2x Derbi GPR, '00 Aprilia RS250, '99 Aprilia RS250, '95 Cagiva Mito 125, '04 & '95 NSR50R, '90 Honda NS50, '94 Honda RS125, '90 Honda RS80, '88 YSR63 (1st 2stroke!), '89FZ600, '89KLR250(1st Bike!)

I Need Parts!
Reply With Quote
  #3  
Unread 11-01-2017, 01:27 PM
twinturba's Avatar
twinturba twinturba is offline
Moderator - $ Donating Member
 
Join Date: Oct 2005
Location: San Francisco
Posts: 905
Default

The current plan is just to derestrict and enjoy it stock, but you never know!

Had a chance to start the derestricting process before leaving Bats L.A.
Here is what a brand new Derbi EBS050 looks like


Why is the Spacely Sprocket missing you may ask? Well thats one part that needs to be changed to get more than 40 MPH out of this thing. The stock was 12 and we happened to have a stock 14 derbi in the parts bin so that was going to go on, but alas we need a longer chain!



The process continues soon!
__________________
Current:Yuki, Carlos, Newd, Aprilia RS10k, Max, Bangkok, Derbi ADV

Past:Marco, Fumi, '16 & '15 RC390, '11 Madass,'98 Chester, '00 Mito, '12 PW50, KTM BR 65, Aprilia BR50, '06 Aprilia RS125, '04 DRD, 08 WR250X, 7x '03 Derbi SM's, 6x 99-04 Aprilia RS50's, 2x Derbi GPR, '00 Aprilia RS250, '99 Aprilia RS250, '95 Cagiva Mito 125, '04 & '95 NSR50R, '90 Honda NS50, '94 Honda RS125, '90 Honda RS80, '88 YSR63 (1st 2stroke!), '89FZ600, '89KLR250(1st Bike!)

I Need Parts!
Reply With Quote
  #4  
Unread 11-01-2017, 01:28 PM
twinturba's Avatar
twinturba twinturba is offline
Moderator - $ Donating Member
 
Join Date: Oct 2005
Location: San Francisco
Posts: 905
Default

Another item that needs to be addressed in the derestriction process is the carb. There wasn't a restrictor plate on the carb as I have found pictures of online, but the jets were all wrong. Any input from the folks who have done this before would be helpful!


Fortunately I was able to dig through my remaining Derbi stockpile, that hasn't been looted yet, and found a stock Derbi Motard carb that is exactly the same model, but didnt come restricted.


Swapped out all the Bits inside with the bits that were in the Nude carb and I have a baseline of where to start. I realize the Motard has a smaller airbox, but at least its a start.
Motard 45 GPR 50

Motard 32 GPR 30

Motard 71 GPR 60 This I will most likely jet up based on what Ive read online

Motard 211GA GPR 208GA

Even swapped these, though they looked identical


Also have a few jets to play with when the time comes!


More to come!
__________________
Current:Yuki, Carlos, Newd, Aprilia RS10k, Max, Bangkok, Derbi ADV

Past:Marco, Fumi, '16 & '15 RC390, '11 Madass,'98 Chester, '00 Mito, '12 PW50, KTM BR 65, Aprilia BR50, '06 Aprilia RS125, '04 DRD, 08 WR250X, 7x '03 Derbi SM's, 6x 99-04 Aprilia RS50's, 2x Derbi GPR, '00 Aprilia RS250, '99 Aprilia RS250, '95 Cagiva Mito 125, '04 & '95 NSR50R, '90 Honda NS50, '94 Honda RS125, '90 Honda RS80, '88 YSR63 (1st 2stroke!), '89FZ600, '89KLR250(1st Bike!)

I Need Parts!
Reply With Quote
  #5  
Unread 11-01-2017, 01:29 PM
twinturba's Avatar
twinturba twinturba is offline
Moderator - $ Donating Member
 
Join Date: Oct 2005
Location: San Francisco
Posts: 905
Default

Another step closer to de restricting the Newd!
Decided to skip an attempt at derestricting the stock pipe as much of the prevailing wisdom online seems to hint at a mass inside the expansion chamber that would require a whole lot of cutting and repairing for not a lot of umph. We decided to go with a Giannelli pipe that will help the bike lose some weight, gain some power band action, and look just that little bit sexier!

Here is the sweetness all cozy in the original packaging:


Here is a side by side with the stock expansion chamber so you can get a look at how much sexier this Italian made piece of metal looks!


Alas! Even the performance exhausts from Europe come with a mandated restrictor in the header!


Fortunately Giannelli chooses to put just a minimum amount of effort into this making it easy to circumvent. Here is a look at some of the tools and techniques used to make this pipe flow freely.



Done!

__________________
Current:Yuki, Carlos, Newd, Aprilia RS10k, Max, Bangkok, Derbi ADV

Past:Marco, Fumi, '16 & '15 RC390, '11 Madass,'98 Chester, '00 Mito, '12 PW50, KTM BR 65, Aprilia BR50, '06 Aprilia RS125, '04 DRD, 08 WR250X, 7x '03 Derbi SM's, 6x 99-04 Aprilia RS50's, 2x Derbi GPR, '00 Aprilia RS250, '99 Aprilia RS250, '95 Cagiva Mito 125, '04 & '95 NSR50R, '90 Honda NS50, '94 Honda RS125, '90 Honda RS80, '88 YSR63 (1st 2stroke!), '89FZ600, '89KLR250(1st Bike!)

I Need Parts!
Reply With Quote
  #6  
Unread 11-01-2017, 01:30 PM
twinturba's Avatar
twinturba twinturba is offline
Moderator - $ Donating Member
 
Join Date: Oct 2005
Location: San Francisco
Posts: 905
Default

For one reason or another the silencer didnt arrive until a few weeks after the expansion chamber, but it's here now and here are a few pics.

First up, part numbers and made in Italy sticker of approval


Next up, the bag O bits with assembly instructions I assume. Interesting that the Gianelli badge is not attached and includes rivets to secure it yourself! Probably won't be putting that on.


Mid pipe and Silencer:



No restriction inside these bits, Silencer flows straight thru!
__________________
Current:Yuki, Carlos, Newd, Aprilia RS10k, Max, Bangkok, Derbi ADV

Past:Marco, Fumi, '16 & '15 RC390, '11 Madass,'98 Chester, '00 Mito, '12 PW50, KTM BR 65, Aprilia BR50, '06 Aprilia RS125, '04 DRD, 08 WR250X, 7x '03 Derbi SM's, 6x 99-04 Aprilia RS50's, 2x Derbi GPR, '00 Aprilia RS250, '99 Aprilia RS250, '95 Cagiva Mito 125, '04 & '95 NSR50R, '90 Honda NS50, '94 Honda RS125, '90 Honda RS80, '88 YSR63 (1st 2stroke!), '89FZ600, '89KLR250(1st Bike!)

I Need Parts!
Reply With Quote
  #7  
Unread 11-01-2017, 01:31 PM
twinturba's Avatar
twinturba twinturba is offline
Moderator - $ Donating Member
 
Join Date: Oct 2005
Location: San Francisco
Posts: 905
Default

Had a little time to stop by Bats L.A. Over the weekend so I packed some of the needed de restriction pieces for Newd and was on my way!


After arriving had to get unpacked and lay everything out. All Photo credits for this post go to my 8YO son!




Is it just me or does everyone enjoy peeling this stuff off new parts?!


Puttin it together:






First issue encountered, only two of the right size nutz for securing the silencer!


Luckily we have a small bin of Aprilia/Derbi fastners in the shop!




Securing the expansion chamber:



Coupling in place:


So the pipe went on without any major issues, but my photographer got bored so I didn't get any pic of the carb reinstall. Luckily we managed to get some footage of the sweetness and a video will be posted soon so stay tuned!
__________________
Current:Yuki, Carlos, Newd, Aprilia RS10k, Max, Bangkok, Derbi ADV

Past:Marco, Fumi, '16 & '15 RC390, '11 Madass,'98 Chester, '00 Mito, '12 PW50, KTM BR 65, Aprilia BR50, '06 Aprilia RS125, '04 DRD, 08 WR250X, 7x '03 Derbi SM's, 6x 99-04 Aprilia RS50's, 2x Derbi GPR, '00 Aprilia RS250, '99 Aprilia RS250, '95 Cagiva Mito 125, '04 & '95 NSR50R, '90 Honda NS50, '94 Honda RS125, '90 Honda RS80, '88 YSR63 (1st 2stroke!), '89FZ600, '89KLR250(1st Bike!)

I Need Parts!
Reply With Quote
  #8  
Unread 11-01-2017, 01:32 PM
twinturba's Avatar
twinturba twinturba is offline
Moderator - $ Donating Member
 
Join Date: Oct 2005
Location: San Francisco
Posts: 905
Default

The Sweet Sound of Success!

__________________
Current:Yuki, Carlos, Newd, Aprilia RS10k, Max, Bangkok, Derbi ADV

Past:Marco, Fumi, '16 & '15 RC390, '11 Madass,'98 Chester, '00 Mito, '12 PW50, KTM BR 65, Aprilia BR50, '06 Aprilia RS125, '04 DRD, 08 WR250X, 7x '03 Derbi SM's, 6x 99-04 Aprilia RS50's, 2x Derbi GPR, '00 Aprilia RS250, '99 Aprilia RS250, '95 Cagiva Mito 125, '04 & '95 NSR50R, '90 Honda NS50, '94 Honda RS125, '90 Honda RS80, '88 YSR63 (1st 2stroke!), '89FZ600, '89KLR250(1st Bike!)

I Need Parts!

Last edited by Four_Ari : 11-01-2017 at 01:48 PM.
Reply With Quote
  #9  
Unread 03-26-2018, 08:20 PM
twinturba's Avatar
twinturba twinturba is offline
Moderator - $ Donating Member
 
Join Date: Oct 2005
Location: San Francisco
Posts: 905
Default

With the exhaust and carb restrictions done it was time to fix the gearing. Since I had to remove the stator cover to swap the front sprocket from a stock GPR restricted 12T to an unrestricted Derbi Senda 14T, I figured might as well break out the red power paint pen.

Sprocket on:

New longer chain

And the finished product


With the chain and sprocket done, I decided to swap in a Metrakit CDI just in case the stock one has some sort of restriction. Metrakit on the left, stock on the right.


Wasn't too difficult, plug and play, but did have to remove the tank so my handy custom made tank stand came in handy.


Last thing to complete the derestriction was changing the spark plug.
Stock, never seen one of these in a bike!


New, HiPo Plug!


De-Restriction done, bike runs great so time for some cosmetic derestriction!
__________________
Current:Yuki, Carlos, Newd, Aprilia RS10k, Max, Bangkok, Derbi ADV

Past:Marco, Fumi, '16 & '15 RC390, '11 Madass,'98 Chester, '00 Mito, '12 PW50, KTM BR 65, Aprilia BR50, '06 Aprilia RS125, '04 DRD, 08 WR250X, 7x '03 Derbi SM's, 6x 99-04 Aprilia RS50's, 2x Derbi GPR, '00 Aprilia RS250, '99 Aprilia RS250, '95 Cagiva Mito 125, '04 & '95 NSR50R, '90 Honda NS50, '94 Honda RS125, '90 Honda RS80, '88 YSR63 (1st 2stroke!), '89FZ600, '89KLR250(1st Bike!)

I Need Parts!

Last edited by twinturba : 03-26-2018 at 08:33 PM.
Reply With Quote
  #10  
Unread 03-27-2018, 06:50 AM
jkv357 jkv357 is offline
Junior BAT
 
Join Date: Nov 2017
Location: Middleton, WI, USA
Posts: 20
Default

Looking good TT!

Can't wait for a ride report after all the mods and tuning are done.
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -7. The time now is 02:55 PM.


Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.

Ad Management by RedTyger