CRM250AR the Honda oddball
Close
Login to Your Account
CBR250 Forums - Powered by vBulletin
Page 1 of 3 123 LastLast
Results 1 to 10 of 25
Like Tree3Likes

Thread: CRM250AR the Honda oddball

  1. #1
    Biker
    Member #
    225
    Join Date
    May 2010
    Location
    Sydney
    Posts
    150

    CRM250AR the Honda oddball

    I'm a sucker for punishment.... The RGV is on hold since I had to move interstate, it's now being babysat by a friend who has too many RGVs.

    I've settled into life in NSW reasonably well and thought I would have a change in riding style and go the dirt bike/motard path (Yamaha WR250R).A few other friends in Melbourne decide the same thing and a bike is spotted up here that he wants, no problems, I can store it temporarily. The deal is done, a price is worked out and the bike lands at my place. A month later said mate says he will long term run into financial problems. I decided to take on the bike and fix it up, decide what to do later. Besides, who can resist a two stroke, especially one that has a reputation for being different.

    So the bike is a 1997 Honda CRM250AR. It's a two stroke single, with "activated radical" technology. So at low throttle openings it closes the exhaust port to next to nothing, raising the compression to use the waste heat and unburnt fuel to cause compression ignition (diesel along). Once you get on the gas, it behaves like a normal spark ignition engine and powers along, so in theory you get the best of both worlds.

    (space reserved for a picture of the bike when I find it from the archives somewhere)

    The fun starts with the bike itself. It has an ADR compliance plate, but was imported as a bike from the UK. I don't know how it works, but it has the plate and engine number so when I register it later I'm not complaining.

    Over the long weekend period I decided to break from the family routine and get some shed time. In next to no time it is stripped down.

    This is what I achieved:

    corroded exhaust and suspension link


    A lot of help from liquid spanner


    Remembering to be methodical


    Bagged....


    ...and tagged


    end of day 1


    DAY 2

    Slow progress time because it is spent cleaning

    first round of cleaning the expansion chamber from this...


    ...to this


    Honda dirt bikes from the same era have a dreaded reputation of seizing their swingarm pivot bolts. I seemed to have lucked out and with a bit of cleaning the bolt is at this stage
    Aduro, Matt and aky141 like this.

  2. #2
    Biker
    Member #
    225
    Join Date
    May 2010
    Location
    Sydney
    Posts
    150
    Time to work on the front end. More bagging and labelling of bits




    A well greased head stem, it's a shame the bearings weren't shown any love, the grease in both bearings had changed colour so they looked like rusty grease as lubrication.




    The state the project is currently sitting in. I now need to buy parts and start taking the hard bits out. My supervisor is also telling me that I should stop work and spend time with the family.


  3. #3
    Ace Worm's Avatar
    Member #
    164
    Join Date
    Jan 2002
    Location
    Vic
    Posts
    13,106
    Is this a road register able motard?
    Will be awesome when it's finished
    Quote Originally Posted by \'Jashdown\' pid=\'282134\' dateline=\'1369381162\'
    I am a noob.

  4. Remove Advertisements
    CBR250.com
    Advertisements
     

  5. #4
    Ace Worm's Avatar
    Member #
    164
    Join Date
    Jan 2002
    Location
    Vic
    Posts
    13,106
    Never mind, I just read the last paragraph lol
    would be a fun bike and probably one of a kind
    Quote Originally Posted by \'Jashdown\' pid=\'282134\' dateline=\'1369381162\'
    I am a noob.

  6. #5
    Biker
    Member #
    225
    Join Date
    May 2010
    Location
    Sydney
    Posts
    150
    I know of someone that tried to stick a cr250 cylinder on one, he got unstuck with going to far oversized in the bore and can't get a piston that is reliable. That would be silly fun

    Sent from my HTC Sensation XL with Beats Audio X315b using Tapatalk

  7. #6
    Banned
    Member #
    9214
    Join Date
    Mar 2013
    Posts
    385
    Long live the thumper! I had to look up what the hell "Active radial technology" was.

    Also, some kid has nicked your pen!

  8. #7
    Biker
    Member #
    225
    Join Date
    May 2010
    Location
    Sydney
    Posts
    150
    Said kid got bored this weekend so minimal work achieved.

    This week there is minimal physical progress. The linkage bearings are good so I am not going to replace them.

    I've been tabulating bearings, looking for generic part numbers, and comparing quotes.

  9. #8
    Junior Biker
    Member #
    8867
    Join Date
    Nov 2012
    Posts
    70
    Oh boy, can you do me a massive favour? I bought a 99' CRM which apparently had a swing arm replaced. Now, the previous owner also mentioned the linkage bearings need replacing and rightfully so because they were utterly destroyed. So I get home and I'm trying to just put it back together so I can keep it as one piece til I have enough time to work on it and no matter which way I try and installed the linkage and shock, it won't line up with the swing arm. I noticed that there was a "Pro-Link" sticker on the swing arm which I had also seen on my mate's '84 CR500. A little research showed me that the first model of the CRM had that and the swing arm/suspension was different. think the previous owner bought the wrong swing arm but I need someone to take some measurements for me. Would you be able to get these two measurements for me? http://i.imgur.com/5FAiPHY.jpg I would be greatly appreciative if you can. No need for dead accuracy, just to prove or disprove my theory. If it wasn't for this my AR would be registered and riding by now!
    --
    CBR250RR | MC22 | Tyga
    --

  10. #9
    Biker
    Member #
    225
    Join Date
    May 2010
    Location
    Sydney
    Posts
    150
    I can measure components for you, I won't be able to do fitted out measurements until later.

  11. #10
    Junior Biker
    Member #
    8867
    Join Date
    Nov 2012
    Posts
    70
    Awesome. Just has to be a rough measurement (to the nearest millimeter). Basically just need the distance from the centre of the swing arm bolt to the centre of the linkage bolt in the X direction of the swing arm, and the vertical distance between the bottom of the swing arm and the centre of the linkage bolt in the Y direction of the swing arm. Cheers for helping though.
    --
    CBR250RR | MC22 | Tyga
    --

Page 1 of 3 123 LastLast

Similar Threads

  1. FS: (SYD) 95 Honda CBR 250 RR
    By doubleR in forum Buy & Sell
    Replies: 17
    Last Post: 15th May 2014, 09:54 PM
  2. Xlr 250 Honda ?
    By The Dwarf in forum General Motorcycle Forum
    Replies: 18
    Last Post: 8th September 2012, 11:14 PM
  3. NC29 Honda CBR400RR Honda-Pramac Makoto Tamada Project
    By garyboy_palaboy in forum Project Bikes
    Replies: 39
    Last Post: 19th May 2012, 05:24 AM
  4. Replies: 8
    Last Post: 11th April 2012, 09:59 PM
  5. wtb; any honda cbr
    By peterdep in forum Buy & Sell
    Replies: 13
    Last Post: 17th February 2011, 12:02 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •