NSR250.net Forums Logo: Honda NSR 250 Forums, Classifieds and Service Manual in English. Covering All Honda NSR 250 MC16, MC18, MC21 and MC28 models
NSR250.net Forums

#
 
#
 
Performance Engineering

  • NSR250 Forums Index ‹ NSR250R Discussion
  • Members Content
  • Members Garage
  • Subscription
  • Transactions
  • FAQ
  • Search
  • Register
  • Log in

hrc delimiter box mc21


Reply to topic   printer-friendly view
Page 1 of 1   Download Topic





GrantA
Supporter - Titanium
Supporter - Titanium
 
Posts: 283
Joined: 03 May 2008

Location: Weston-Super-Mare, Somerset, UK
1992 Honda NSR250 MC21
    Send private message View user's profile
    Reply with quote  

hrc delimiter box mc21

Mon May 12, 2008 9:13 pm » Post: #1 » Download Post

Hi, just to check can hrc delimiter be fitted onto mc21 se standard loom or do you have to change the loom to hrc? is it worth doing for the road?
Back to top


nxrsr20

 
Posts: 919
Joined: 15 Jul 2007

Location: Sydney, Australia
    Send private message View user's profile
    Reply with quote  

Mon May 12, 2008 10:14 pm » Post: #2 » Download Post

yes you need the HRC loom and no you can't run it on the road as it has no provisions for lights, unless you do something about it yourself Razz
Back to top


Dave Ett
Site Moderator
Site Moderator
 
Posts: 3648
Joined: 20 Feb 2004

Location: Gloucestershire, England
    Send private message View user's profile
    Reply with quote  

Mon May 12, 2008 11:02 pm » Post: #3 » Download Post

Apart from everything you just said, you're absolutely right nxrsr20! Wink

I have an HRC unit on my MC21, and the lights etc work fine. It's the MC28's which don't.

On the MC21 you have to make individual connectors for the HRC wires, as the plugs on it do not match the standard NSR loom. All the wires match, except one (orange / blue I think) which is not present in the HRC loom.

You'll see what I mean when you compare the two looms:


_________________
MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball

Back to top


RichG

 
Posts: 1128
Joined: 11 Feb 2008

Location: Leeds, UK
1992 Honda NSR250 MC21
    Send private message View user's profile Visit poster's website
    Reply with quote  

Mon May 12, 2008 11:43 pm » Post: #4 » Download Post

You don't need a HRC loom to fit the Delimiter Box on the MC21.
The box does exactly the same job as the documented wire splice on the standard loom. As Dave has said, the HRC delimiter box will not work the same way on a 'standard loom' MC28.

My NSR has a delimiter box - all I can say is 'sh*t- it seems to work!'
A recent 'off public road' run - very slightly downhill, it was going past 12000 RPM in top and way off the kph clock. I quit before it ran out of steam.
_________________
Rich
MC21 Track Bike / RS250 NF5 'Spencer', NX5 'Cadalora' & NXA 'Aoyama' / RS500 / Two Brothers Racing RC30


Last edited by RichG on Tue May 13, 2008 6:22 am; edited 1 time in total
Back to top


nxrsr20

 
Posts: 919
Joined: 15 Jul 2007

Location: Sydney, Australia
    Send private message View user's profile
    Reply with quote  

Tue May 13, 2008 12:02 am » Post: #5 » Download Post

Dave Ett wrote:Apart from everything you just said, you're absolutely right nxrsr20! Wink

====> snip


I have no ideas what you said, but I'm happy to hide in my shell and let someone else answer the question Razz
Back to top


RichG

 
Posts: 1128
Joined: 11 Feb 2008

Location: Leeds, UK
1992 Honda NSR250 MC21
    Send private message View user's profile Visit poster's website
    Reply with quote  

Tue May 13, 2008 12:11 am » Post: #6 » Download Post

Much easier to let others rattle on sometimes Laughing
_________________
Rich
MC21 Track Bike / RS250 NF5 'Spencer', NX5 'Cadalora' & NXA 'Aoyama' / RS500 / Two Brothers Racing RC30


Last edited by RichG on Tue May 13, 2008 6:25 am; edited 2 times in total
Back to top


RichG

 
Posts: 1128
Joined: 11 Feb 2008

Location: Leeds, UK
1992 Honda NSR250 MC21
    Send private message View user's profile Visit poster's website
    Reply with quote  

HRC box / standard loom / MC21

Tue May 13, 2008 12:17 am » Post: #7 » Download Post

HRC box / standard loom / MC21
_________________
Rich
MC21 Track Bike / RS250 NF5 'Spencer', NX5 'Cadalora' & NXA 'Aoyama' / RS500 / Two Brothers Racing RC30
Back to top


RichG

 
Posts: 1128
Joined: 11 Feb 2008

Location: Leeds, UK
1992 Honda NSR250 MC21
    Send private message View user's profile Visit poster's website
    Reply with quote  

Tue May 13, 2008 10:44 am » Post: #8 » Download Post

neat job, using proper multi-wire connectors
_________________
Rich
MC21 Track Bike / RS250 NF5 'Spencer', NX5 'Cadalora' & NXA 'Aoyama' / RS500 / Two Brothers Racing RC30
Back to top


fontyyy

 
Posts: 3509
Joined: 10 Apr 2004

Location: Derbyshire, England
1991 Honda NSR250 MC21
    Send private message View user's profile Visit poster's website MSN Messenger
    Reply with quote  

Tue May 13, 2008 10:44 am » Post: #9 » Download Post

All the HRC loom and HRC delimiter harness let you do is run a nice tidy loom with no bits of wire you don't need rather than some Medusa mess that will probably short circuit just as the final call goes out for your race. You need both bits, the HRC main loom has no black plug to take the PGM, it has the other half of those odd plugs that are on the delimiter harness instead.
This is race/track bike only, no road kit provision and is totally a worthwhile mod for a bike that doesn't run any road kit, the stock wiring loom is in the same league as the oil pump/bottle, i.e. massive, in the way, weighs a ton and generally very annoying. The HRC one is just the few wires needed.

They do nothing a wire spliced normal loom doesn't do, all the mc21's trickery is in the PGM and as you have to hack a standard loom up to fit the "delimter" it does seem rather an odd thing to fit on a roadbike.
_________________
Please do not PM me technical questions, if you can't find it on the Forum start a thread


Last edited by fontyyy on Tue May 13, 2008 10:54 am; edited 1 time in total
Back to top


RichG

 
Posts: 1128
Joined: 11 Feb 2008

Location: Leeds, UK
1992 Honda NSR250 MC21
    Send private message View user's profile Visit poster's website
    Reply with quote  

Tue May 13, 2008 10:49 am » Post: #10 » Download Post

I was all ready to butcher some wires when my MC21 arrived, until I found the little black box. Saved one job at least, whilst I was unseizing my brakes!
_________________
Rich
MC21 Track Bike / RS250 NF5 'Spencer', NX5 'Cadalora' & NXA 'Aoyama' / RS500 / Two Brothers Racing RC30
Back to top


Dave Ett
Site Moderator
Site Moderator
 
Posts: 3648
Joined: 20 Feb 2004

Location: Gloucestershire, England
    Send private message View user's profile
    Reply with quote  

Tue May 13, 2008 6:31 pm » Post: #11 » Download Post

fontyyy wrote:They do nothing a wire spliced normal loom doesn't do... it does seem rather an odd thing to fit on a roadbike.


We don't think it does anayway! Some rumours of it doing different things with the timing curve but unsubstantiated by anyone official.

It is an odd thing to do, unless you're sold it on the pretext of needing it for decent horsepower gains! Confused

Ultimately, I suppose I could return my loom to stock as I kept the original plugs, but I've no idea why I - or anyone else would want to... Rolling Eyes
_________________
MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball

Back to top


Reply to topic   printer-friendly view
Page 1 of 1   Download Topic

NSR250R Discussion

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

  • NSR250 Forums Index
  • All times are GMT
Powered by phpBB © 2001, 2005 phpBB Group


Hosted by NSR250dotNET © 2008 NSR250dotNET