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Premium Member
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6,168 Posts
Discussion Starter #1 (Edited)
I've been sniffing round this bike for a wee while now and I've eventually managed to get it.

It's a BMW R45 fitted with R65 barrels and pistons and It needs a fair bit doing to it as it's been off the road now for about 5 years.

First task is to go over it and see exactly what needs doing. I know the brakes are shot, pushrod seals are perished and the paintwork leaves a fair bit to be desired (it was painted yellow tartan at some point) but on the upside it is complete and engine runs.

 

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OVALTEENY !!!
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6,063 Posts
Re: My new project

What colour would it have been and do you intend restoring it?
 

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Grumpy auld man!
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1,646 Posts
Re: My new project

You are going to need another garage extension! ;)


Andy.
 

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2 bikes = twice as happy
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4,354 Posts
Re: My new project

I had a 1979 BMW R45 (BKW 311T :) )for a couple of years in the early '80s. To be honest it was rather crap - heavy and underpowered. The R65 had more power but probably still not enough really. Handling wasn't good, suspension typical BMW - very soft and underdamped, and the shaft tried very hard to climb up the final drive (or was it the other way round?) resulting in the back end rising on acceleration as well as the front - weird. Mine had points and getting ignition timing balanced was an art, as was getting the carbs balanced - out balance and the motor is very lumpy and almost shakes out the frame The brakes were dire. On the upside the finish was good with hand painted coach lines and deep lacquer. Alloy and chrome stood up well to the 3 winters I had.

I don't think they are future classics. I will have a poke about in the garage, I did have some heated grips, crash bars and pannier frames from the bike, but I haven't seen them in years so I probably I scrapped them a long time ago. If I can find them they are yours if you want, but don't be too expectant.

Good luck with it.
 

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SHW'MAE BUTT
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3,270 Posts
Re: My new project

I've been sniffing round this bike for a wee while now and I've eventually managed to get it.

It's a BMW R46 fitted with R65 barrels and pistons and It needs a fair bit doing to it as it's been off the road now for about 5 years.

First task is to go over it and see exactly what needs doing. I know the brakes are shot, pushrod seals are perished and the paintwork leaves a fair bit to be desired (it was painted yellow tartan at some point) but on the upside it is complete and engine runs.


Gordon what about, https://www.google.co.uk/search?q=bmw+hpn&hl=en&client=safari&tbo=u&tbm=isch&source=univ&sa=X&ei=IZTcUNzDIuy20QWAjYDgBQ&ved=0CC0QsAQ
 

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Premium Member
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6,168 Posts
Discussion Starter #7
That's one of the options I'm looking at. In reality I was just looking for something to while away the winter months and this came up at the right time. I also don't think it will ever be a classic but I'll get it roadworthy again and see where I go from there. I've never worked on an air head before so lots of learning opportunities.

The good news is I've just got it running again the bad there is a large pool of petrol under the bike and I have a sore head with the fumes.

Fun fun fun
 

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Premium Member
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Discussion Starter #8
Just in case anyone is interested here is an idea of the previous colour

A rather fetching tartan.

 

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Registered
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3,220 Posts
Re: My new project

Looks like a great project start, can't wait for the updates, those HPN's look tasty:thumbright:
 

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Registered
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2,992 Posts
Re: My new project

Yes, the HPN's looks good!

I'm not convinced they are worth the money though.
But I'm open minded, so I could perhaps be persuaded to change my mind if anyone out there would like to lend me an HPN to try out.
 

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Deer Dodger
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3,199 Posts
Re: My new project

Nice one Gordon,

Is this the baby you've been hankering after some time time now ?
Looks sweet as a nut :thumbup:

Hope you get on better than my beemer project, haven't been near it for a while, working away from home leaves little time for fetishes at weekend :(

But I've made some progress this xmas break, so not all doom and gloom :D
 

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Premium Member
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Discussion Starter #12
Re: My new project

Nice one Gordon,

Is this the baby you've been hankering after some time time now ?
Looks sweet as a nut :thumbup:

Hope you get on better than my beemer project, haven't been near it for a while, working away from home leaves little time for fetishes at weekend :(

But I've made some progress this xmas break, so not all doom and gloom :D
Not really.. That was a R75/5 and mostly due to my ambivalence that one fell through and I've been kicking myself since. This one on the other hand is much less desirable (In saying that the R65 was not a bad bike and this is almost an R65) but it is nearly complete and all major items seem sound.

If I was just to get it back on the road I could probably have it done in a few days but I fancy restoring it some way. Not a factory restoration but I'd like to make it look like a well cared for 30 odd year old bike.
 

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Premium Member
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Discussion Starter #13 (Edited)
Re: My new project

Well today's update is the braking system has been completely stripped down and rebuilt.

New seals in the master cylinder refitted (and bits of the old seal removed), All brake lines stripped and cleaned. The rubber hoses look to be in good nick but one of them was blocked with crud which even that airline wouldn't move so a length of copper wire was pressed through and then rasped back and froward. Callipers stripped and checked and all found to be ok so just a quick clean and rebuild.

Bleeding the system was on the other hand any thing but quick and simple as I just couldn't get the last of the air out. Using a series of clamps I established it was up near the master cylinder and the only way I could find to bleed was to remove it from the bars and invert it and give it 4 or 5 pumps. This pushed the air into the line and I could bleed as normal from then on. All this ended up taking a good three or four hours so just as well I wasn't charging myself..

Anyway the front end is now mechanically done so time to move rearwards and see what that brings.

I guess I better get that battery ordered now.

As an aside the mainstand seems to sit really far forward and the wheels are just millimetres off the ground. Is that normal? I must admit I haven't even looked at it I was just wondering if anyone had any first hand knowledge.


 

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2 bikes = twice as happy
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4,354 Posts
Yeah, the stand thing. I couldn't remember if this was a problem on my R45 or my R80ST. This is a 30 year memory so bear with.... but I seem to recall the stand pivoted on two small bushes that wore out very quickly. If both wheels are touching the ground then that will be the problem. I fixed mine once and seem to remember it being a right PITA (atent centre stand always) and the bushes weren't cheap.


Sent from my iPhone with a smile :)
 

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Bloody furriner
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5,009 Posts
Re: My new project

Yes, those bushes wear out. These are the ones that came off my GS:


A set of new ones from Motobins should fix that. The ones for my GS were 2 quid each, even a Scot should be able to manage that. :mrgreen:

Nice little project. Keeping my eye on this one... :)

You might want to think about some steel braided brake lines on there by the way. The brakes on these old airheads were never much to begin with especially compared to your 1200, the brakes on these are more a form 27B-6 filled out in triplicate sort of affair. ;-) (It's got 2 discs, at least.)
 

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The Sultan of Bling
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1,981 Posts
Re: My new project

Just discovered Motorworks are offering free shipping for any orders to UK Mainland placed before the 1st of January so if you need bits could be a good time to get an order together. They have the main stand bushes and also a complete kit including bolts in stainless and springs.

Sadly it don't apply to us sods with a bit of water in the way :(
 

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Premium Member
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6,168 Posts
Discussion Starter #17
Re: My new project

Yes, those bushes wear out. These are the ones that came off my GS:


A set of new ones from Motobins should fix that. The ones for my GS were 2 quid each, even a Scot should be able to manage that. :mrgreen:
Smashing. That's what I was hoping for.

You might want to think about some steel braided brake lines on there by the way. The brakes on these old airheads were never much to begin with especially compared to your 1200, the brakes on these are more a form 27B-6 filled out in triplicate sort of affair. ;-) (It's got 2 discs, at least.)
I've thought about it but I want to keep it as original as possible. I'll see how bad they really are and then decide.
 

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Premium Member
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Discussion Starter #19
Re: My new project

Well with the 'new' battery fitted it fired right up.. It wouldn't tick over at first but once it had warmed up a bit it settled down. I even managed to have a quick turn round the block and by the time I got back it was ticking over a lot better. I suspect a good carb clean and some fresh fuel would do the world of good.

Both exhausts blowing slightly at the head and a lot of oily smoke hopefully just burning off the cylinders as the bike warmed up.
Clutch seems OK but could do with some adjustment
Gearbox is as smooth and I'd expect with no rattles
Slight weep from the fork seals so something else to add to the list
Might have felt a knock from the headraces on a speedbump so need to have another look at them
Pushrod seals are weeping on one side.
And the engine could do with a really good service as it's a bit tappety.
The front brake light switch is bust and on all the time.

Once it cooled and I had been out shopping with the Mrs <shudder> I came back and took it for another spin and no more oily smoke so hopefully that was just from storage and the exhausts didn't seem to be blowing now.

All in all I'm really pleased. Even the 30odd year old chrome is in reasonable nick
 
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