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Hot Topic (More than 10 Replies) Another New Guy (Read 452 times)
Smokymb
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Another New Guy
04/25/18 at 14:16:25
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Hello all, just got my first airhead, a 1981 R65 that has supposedly been converted to R80 spec - whatever that means. Unfortunately Iím not currently collocated with the bike, so I canít look for serial numbers on things to investigate. Been skulking around looking at postings and once I get my hands on the bike will try to ask semi intelligent questions. Tried to post picture, but file is too big and my brain is too small to figure out how to resize it. Maybe later.
  

Current: 1981 R65, 2007 Yamaha Majesty 400, 2011 Honda Elite 110
Gone: 2002 Honda Reflex 250, 1979 Honda CB 400, 1962 Harley Sprint H 250, Allstate Highlander, Whizzer
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Smokymb
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Re: Another New Guy
Reply #1 - 04/25/18 at 17:16:27
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Mighta figures out how to insert a picture of my new fun machine.
  

Current: 1981 R65, 2007 Yamaha Majesty 400, 2011 Honda Elite 110
Gone: 2002 Honda Reflex 250, 1979 Honda CB 400, 1962 Harley Sprint H 250, Allstate Highlander, Whizzer
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Adrian
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Re: Another New Guy
Reply #2 - 04/25/18 at 21:14:31
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Hi there & welcome to the tribe. Lots of great people & advice here 😉
  

R65 1984
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Tony Smith
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Re: Another New Guy
Reply #3 - 04/26/18 at 16:46:41
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Nice looking bike - twin ATE calipers on a non LS is a rare thing.

I'm looking forward to seeing a front 3/4 view to see if it has an R80 engine or not. BTW, if it does you will love it, the R80 engine runs the smoothest of all the boxers (some argue that the R75 has that "honour", but they are wrong (not that the R75 is not a damn fine engine - but the R60 is the smoother of the /5/6/7 varieties).

Anyway, if you do have an R80 engine, which by the way fits perfectly providing all the right hardware was imported with the engine the only thing you need to be aware of is a slight loss of cornering clearance - inconsequential in my view.


Lastly, welcome.


  

1978 R100RS| 1984 R65 | 1984 XT350 | 1992 KLE500 | 2002 R1150GSA
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Bob_Roller
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Re: Another New Guy
Reply #4 - 04/26/18 at 18:09:23
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Twin ATE calipers were standard on the North American 1981 R65's .
  

'81 R65
'82 R65 LS †
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!
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Tony Smith
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Re: Another New Guy
Reply #5 - 04/26/18 at 20:49:08
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Bob_Roller wrote on 04/26/18 at 18:09:23:
Twin ATE calipers were standard on the North American 1981 R65's .


Oh....
  

1978 R100RS| 1984 R65 | 1984 XT350 | 1992 KLE500 | 2002 R1150GSA
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Smokymb
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Re: Another New Guy
Reply #6 - 05/02/18 at 18:23:19
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Looking forward to getting back to FL where the bike is sitting and waiting for me. Will report engine serial numbers, carb types, take photos, and report back to the group so we can figure out what I have and, most importantly, which parts to order when I start prepping it for a summer of riding. Thanks for your help.
  

Current: 1981 R65, 2007 Yamaha Majesty 400, 2011 Honda Elite 110
Gone: 2002 Honda Reflex 250, 1979 Honda CB 400, 1962 Harley Sprint H 250, Allstate Highlander, Whizzer
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Smokymb
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Re: Another New Guy
Reply #7 - 05/28/18 at 06:39:25
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As mentioned in my new guy post a few weeks ago, bought a 1981 R65 described as ďupgraded by prior owner to R80 specsĒ. No other info available from the seller. I have been collecting clues; hope you guys can help me identify engine so I can order parts. I think it lived with a Harley, it leaks a bit of oil; definitely needs a few gaskets and a seal or two. Carb numbers match those listed for R65, jet sizes are unknown.Havenít seen an R65 in person, but my cylinders stick out (more than 11 inches from engine case, see picture) a bit further than the R65 pictures Iíve seen. There is an ď80Ē stamped at the base of each cylinder (attached picture). Engine number (attached picture) is not over the dipstick, but on a plate at left/lower/front corner. Gotta be an Ď83 or later R80 engine with R65 carbs, right? The number on the plate does not match anything I can find on the table in the Clymer manual, pg XII. Iíd appreciate any help you can offer.

Oh, one more thing while Iím asking. Iím not especially weak, but have a hard time getting the bike on or off the center stand. The Yamaha scooter I have weighs within 10 lbs of the R65, and no problem popping it on or off the center stand. Seems I read somewhere that BMW addressed the issue, but donít know what they did? Anybody else have same problem and found solution? Thanks again for listening.
  

Current: 1981 R65, 2007 Yamaha Majesty 400, 2011 Honda Elite 110
Gone: 2002 Honda Reflex 250, 1979 Honda CB 400, 1962 Harley Sprint H 250, Allstate Highlander, Whizzer
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Smokymb
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Re: Another New Guy
Reply #8 - 05/28/18 at 06:44:14
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Didnít figure out how to put up more than one photo at a time, will add a couple more now. Slow learners are among us.
  

Current: 1981 R65, 2007 Yamaha Majesty 400, 2011 Honda Elite 110
Gone: 2002 Honda Reflex 250, 1979 Honda CB 400, 1962 Harley Sprint H 250, Allstate Highlander, Whizzer
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davidpdx
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Re: Another New Guy
Reply #9 - 05/28/18 at 22:37:11
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I had the same problem with my bike (center stand). Bought a used ride off center stand and it was one of the best upgrades I have made to the bike. You just have to make sure the center stand you buy is made for a R65.
  

1984 R65 60K+
1946 Triumph Speed Twin

Being shot out of a cannon will always be better than being squeezed out of a tube. †That is why God made fast motorcycles, BubbaÖ

ó Hunter S. Thomps
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Smokymb
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Re: Another New Guy
Reply #10 - 05/29/18 at 14:03:23
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@ davidpdx The name ďride off standĒ is so wonderfully descriptive I thought Iíd try mine out. I just scooted back on the seat and let the clutch out enuf to pull it off the stand! It worked! Is that the way it really works? If so, I already have a ride off stand and didnít know it. Now if we could just ďride onĒ.

Thanks for our help.
  

Current: 1981 R65, 2007 Yamaha Majesty 400, 2011 Honda Elite 110
Gone: 2002 Honda Reflex 250, 1979 Honda CB 400, 1962 Harley Sprint H 250, Allstate Highlander, Whizzer
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Tony Smith
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Re: What engine do I have?
Reply #11 - 06/03/18 at 00:15:29
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Ok I tried to find my imperial tape measure and failed.

Here are two photos for comparison, I'm not proud of the quality, but they are good enough to show the difference between an R65 barrel and an R80 one, although perhaps to be technically correct, the difference between an R65 barrel and a long stroke barrel.

  

R65-RHS_Barrel.jpg ( 234 KB | 8 Downloads )
R65-RHS_Barrel.jpg
R80_RHS_Barrel.jpg ( 92 KB | 7 Downloads )
R80_RHS_Barrel.jpg

1978 R100RS| 1984 R65 | 1984 XT350 | 1992 KLE500 | 2002 R1150GSA
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Tony Smith
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Re: Another New Guy
Reply #12 - 06/03/18 at 00:24:33
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Ok, so the R65 barrel is about 170mm from the innermost fin to the top of the outermost fin, whereas the R80 barrel is about the same, give or take a smidgeon. BUT look at the difference in the base of the barrels, there is more than double the difference between the engine block and the first fin on the R80.

I also note that my wife's bike has "80" thoughtfully stamped on the barrel base.

Based on that I'd say that your engine is an R80 engine and not an R65 with replacement jugs.

My wife's bike has been an R65/80 since 1987, the only further change we ever considered was to out a higher ratio final drive on it, but as we got older we travelled slower so the revs ceased to be a concern.

If you ever ride a "genuine" R65 you will be staggered at both the difference in power and the general "willingness" of the machine. You can also rest assured that there is no downside - on long trips the wife and I get near identical mileage and given that neither of us seek to channel Mike Hailwood, the minute loss of cornering clearance is a non-issue.

I a looking forward to a further comparison when my R65 becomes an R86 in the near future.
  

1978 R100RS| 1984 R65 | 1984 XT350 | 1992 KLE500 | 2002 R1150GSA
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Smokymb
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Re: Another New Guy
Reply #13 - 06/03/18 at 07:43:28
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Thanks, Tony, I came to the same draft conclusion .. R80 transplant. Found an engine serial number essay on Snowbumís website, the number on my engine indicates it was completed the 28th week of 1984, definitely not OE on a 1981 bike. Makes some sense to me that youíd transplant a complete engine vs finding another 650cc block and kludge (love that word) on parts from yet another engine. Guess Iíll find out more when it comes time to replace head gaskets, etc. Iíll start by ordering 1984 or 1985 R80 engine parts.

While Iíve got you on the phone, do you still use the OE center stand? I have a hard time getting the bike off the stand, which I hear is a common complaint. Iíve found a Reynolds ride-off center stand (R361) for your 1984, but so far no luck on the model for a 1981 (Reynolds #R360). Found the Reynolds numbers on Snowbumís site.

Thanks again for your help. Is there a subgroup for R65/80? Iíll join.
  

Current: 1981 R65, 2007 Yamaha Majesty 400, 2011 Honda Elite 110
Gone: 2002 Honda Reflex 250, 1979 Honda CB 400, 1962 Harley Sprint H 250, Allstate Highlander, Whizzer
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Tony Smith
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Re: Another New Guy
Reply #14 - 06/03/18 at 17:28:00
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Smokymb wrote on 06/03/18 at 07:43:28:
T
Is there a subgroup for R65/80? Iíll join.



Yep, population here at present is you and my wife Sylvia.

To go back to your stand - providing the pivot holes have not been flogged out your stand is quite repairable, it involves welding metal to the "top and front" of the contact face on the stand. This is a regular job and I will be taking our stands off and welding them up later this week.

Some time back one of the other denizens here welded some stainless steel "wedges" onto the top of their stand in the hope of a more permanent fix, a search of the tech conference (where we really should move this) should find it.

Failing that, I'll take some photos when I do mine. Be warned I am not the greatest stick welder, in fact 40 years ago a friend described my efforts as beign the result of "the great steel pigeon with diarrhoea", sadly that sums up what my welds tend to look like but fortunately I own a good slag chipping hammer and an angle grinder.


  

1978 R100RS| 1984 R65 | 1984 XT350 | 1992 KLE500 | 2002 R1150GSA
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