1986 R65 Cafe Racer project 'Death Racer'

Discussion in 'Airheads' started by violetpop, Jul 22, 2013.

  1. violetpop

    violetpop Been here awhile

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    You make a good call... See how things pan out! Brakes will be all new, suspension fully rebuilt and some nice Pirelli tyres. The motor will be the last thing.
    #21
  2. Padmei

    Padmei enamoured

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    My point was don't get too far into the build & be hamstrung by the smaller motor - just get the styling to how you want it then if you want to go faster look at another R100RT or similarly unwanted bike & do the same to that.
    Oh & don't worry about the purists, in fact you are lucky you posted here & not on the UKgsers site- they get very very upset with customs.:D
    #22
  3. _cy_

    _cy_ Long timer

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    ah the fashion police are out :lol3
    looks like you are doing an excellent job!

    purist are afraid your bike will end up like this 1963 R69S with a R75/7 engine, tank and front end.

    [​IMG]
    #23
  4. violetpop

    violetpop Been here awhile

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    Yeah i hear you on that one. That was the original plan. I will set the bike up, do everything and then down the track, if a good engine comes up i will go for it! Happy days!!
    #24
  5. violetpop

    violetpop Been here awhile

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    Thank you mate.... I like what i see man, very interesting set up and i am sure it is a pleasure to ride!
    #25
  6. violetpop

    violetpop Been here awhile

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    So I have a few updates and a couple a question...

    The question is as follows: do these top clamp bolts need a large 'o' ring around them? I just can't see how they seal and keep the oil in... They had thread tape over them which I can't imagine would be done from the factory.

    [​IMG]

    Now to the updates. I have cleaned a few more things up and started to get the bike rolling again... After I took these pictures, I pulled the wheel off and sent them to the bike shop that will eventually help me with the things that are put of my depth.

    [​IMG]

    [​IMG]

    [​IMG]

    Once I get the wheels and tyres back I will work out what clip ons to use, drop the engine and box back in and get the bike over to the shop and sort out a cowl/tank, exhaust and getting the suspension fully rebuilt. Happy days, un happy back pocket!
    #26
  7. gs-ell

    gs-ell Been here awhile

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    Violetpop, i am Elliott.
    I meant for the next project, which is leaning on the wall, i think i'll keep it 'classic' looking.
    The cost for the build of superbeemer aint that bad, though i have swapped parts for parts!!

    Why does no one like the R65 as a race bike?
    It's a short stroke, loves to be revved engine, my current bike has had 115mph with a few tweaks to carb inlets and air intakes, and for superbeemer i've a huge list of mods for the engine, to really increase the bhp.
    But most people i speak to always say go for the 1000, but isnt it a more low down grunty engine??

    Ignore the purists mate, BMW made a great bike some just like to make it look LOADS better.

    All the best
    #27
  8. violetpop

    violetpop Been here awhile

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    Ahhh it all makes sense now!! How are you, Elliot? Yeah i think i will. You never know what will come up so it doesnt hurst.

    Man, i think with parts, us aussies down under get jacked because for some of the second hand used parts we are getting charged and arm and a leg! I will stick to this current suspension set up and see how it go!

    Do you have a thread here or you doing it from your blog?... The latest pictures i saw look bloody good man and yes, i do like the engine. Had no problems taking me 4000km without a problem before i pulled it down. I would like to have a spare 65 engine to tinker with, as you said, ports and carb wise...

    * by the way, the World Wide Web isn't that World Wide hahaha
    #28
  9. Travmoto

    Travmoto almost there...

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    Progress is looking really good mate. In the nanny state I'm guessing 650 will get to 100kph not to different from a r100?
    #29
  10. gs-ell

    gs-ell Been here awhile

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    Just, slowly, updating the blog .......... http://superbeemer.blogspot.co.uk/
    I've emailed you a few times you picking them up? got some plans for the engine i sent the info on, might be useful.
    I can always look into shipping the parts to you if it works out a bit cheaper.

    you settled on a colour for the bike yet?

    Elliott
    #30
  11. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    Yes, the R65 has a shorter stroke, but when you look at bore:stroke ratio, the R65 is basically identical to the R100, 1.333 vs. 1.331 respectively (near enough to make no difference), so the R65 isn't really any more "revable" by nature than an R100. It's just geared a lot lower so you find yourself NEEDING those revs a lot more often. Nothing about the R100 makes it any more of a low RPM motor than the R65. R100s have more usable torque at lower RPMs than an R65 so some people choose to use the lower revs, but that doesn't mean they should.
    #31
  12. hardwaregrrl

    hardwaregrrl ignore list

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    No o-ring or teflon tape from Germany......I imagine thread pitch has a lot to do with the sealing capabilites. There is a flat washer, but given yours is an '86 andMax is saying that it was used up to 10/85, yours may or may not have it.. Enjoying the build....and fuck the old hippie. Wow, sounds like something my dad would say...:lol3

    #5

    <a href="http://s814.photobucket.com/user/hardwaregrrl/media/R65_zps3db846dd.jpg.html" target="_blank"><img src="http://i814.photobucket.com/albums/zz66/hardwaregrrl/R65_zps3db846dd.jpg" border="0" alt=" photo R65_zps3db846dd.jpg"/></a>
    #32
  13. _cy_

    _cy_ Long timer

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    not mine .. it's on Craigslist for $3k selling price. worth noting that R69S in original condition would be selling for $12k+ :D
    #33
  14. Voltaire

    Voltaire Bored Of The Rings

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    I had an R65 last year that I got cheap as a work bike, I would never have gone looking for one as I believed all the reviews that they were a gutless wonder. They are of course 300 odd cc down on the big bros, but gutless wonder er no. sure you have to keep them on the boil and the usual 4k motorway speed is 5k. I could rev mine to 8k and great fun on a twisty road.
    I've been away with the missus on the back, overtaking becomes less of an option...you just need to go into cruising mode then.
    The crankcase is nigh on identical to the large ones, other than the pushrod entries being on a different angle, crank is much the same without the balancing webs, weak point is the valve train. 7mm valves from that time were known to break.
    If I was going to hot rod an R65 engine I would:
    Raise the compression by skimming the bottom of the cylinders.
    Fit lighter SS valves with beehive springs and titanium retainers.( you could go to 8mm stems)
    The valves and ports are big compared to the R50( slug) and you could stick a maybe a set of 32 Dells or even 36's
    Cam I think is fine, although I have a 336 profile one to go in my R45.
    Here is a pic of my engine case so far.
    [​IMG]

    I've done a bit of research as I'm building a R45 race motor at some point....
    Its on hold at the moment as I'm happy enough with the R90 racer I built that goes, stops and handles really well despite what the keyboard pundits say :rofl
    Have fun
    #34
  15. violetpop

    violetpop Been here awhile

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    Thanks for the info mate, cheers!
    #35
  16. violetpop

    violetpop Been here awhile

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    I will keep a close eye on the blog... Loving the pictures man!

    I got an email from you but not the information about the plans for the engine.... I will private message you on here as it is easier to talk!!

    As for the colour, it will be a mixture of black and black hahahaha..... Maybe a few stainless bolts through out! Ohh mate, shipping parts would be great. When the time comes i will work out exactly what im after and have a chat... Thanks again!
    #36
  17. violetpop

    violetpop Been here awhile

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    You make a good point mate.... It was no slouch in city riding and i was always happy with it going through the twisties. Like every bike, people look for bigger and faster but for now the 65 will be fine.
    #37
  18. violetpop

    violetpop Been here awhile

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    While I wait for the tyres I set about doing a few more things to the bike.

    I fitted a new rear man seal as the old one was weeping ever so slightly. The new one which i purchased locally was different to the one that was one the bike. Different in how it seal. So I put the new one back into the same spot (flush to the black) with a touch of grease.

    [​IMG]

    I also started to clean up the 32mm brings in preparation for their rebuild. Can anyone recommend something to soak them in when they are all apart? Something like a light acid or cleaner to really get them looking new. I might take up the task of giving them a light polish also.

    [​IMG]
    #38
  19. villageidiot

    villageidiot Long timer

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    take em apart and "boil them" in lemon juice.

    you can read on the internet how to do it...... i use a crock pot.
    #39
  20. motu

    motu Loose Pre Unit

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    The R65 Mono makes it's max torque much lower than the twin shock, at 3,500rpm, and pulls a taller final drive, the same ratio as the R80RT. Horsepower is the rate of work, torque x rpm divided by a constant - so less torque and more revs gives the R65 almost as much hp as the R80...48 against 50. Thrash the R65 and it's not far off, but the R80 will pull much better at low revs. I love thrashing my R65 Mono, it's almost the perfect engine for me.

    On a race track the twinshock with higher torque peak and lower gearing might pull away a little on the Mono, but on twisty back roads the Mono has the edge, coming out of corners much faster and being able to short shift to use it's fatter mid range. Handling wise the twinshock is really sharp, a shit load of fun, but the Mono more stable and much better in the rough.
    #40