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The pistons go in easier if you use a rubber grease. Your difficulty was probably because you used brake fluid to lubricate the piston.

Have you ever tested your torque wrenches for accuracy ?

What a beautiful bike.

I always thought there was a lot to the boxer engine . But I’m surprised they don’t seem too hard.

Thank you for the video. Can you really get $20,000for this bike? I am doing a complete mechanical restoration on an R100GSPD, which I bought for $ 6,000. When I am done I have always assumed that it would sell for $6,000. But it has given me great satisfaction, it’s not for sale so I don’t really care. Good luck to you on the sale.

Great video just got a 1974 and 1976 r90s, 74 need the carb done,

I’ve spent a lot of money on my r90/6 and k75s projects. To me the experience and knowledge gained is far more valuable than money loss or gain. Like you I’ll sell the bikes for 20-30k but seeing how that likely won’t happen it’ll force me to keep them which is exactly what I want to do. I’m slowly building up a nice bmw shop/garage which is fun as I plan to continue to collect at least 1 bmw from each decade 1940 onward. Your content is very inspiring. Thank you

DIN = Deutsches Institut für Normung = German Standards Institut

16:05 A tall screwdriver supported on one of the "balconys" in the bell housing was my perfect blocking tool.

My bike has now over 200k km on the clock. After I destroyed one of the exhaust threads in my early times with the bike, I thoroughly heat the finned nuts with a powerful gas torch. Forget hot air blowers for they are too weak and slow. Doing so, the second thread is still in pretty good shape and easy the open. As anti seize I used a white paste plus graphite powder.

One more with Lester wheels. Over here in Germany they are regarded to be a life threatening risk and for sure they lower the value of a R90S significantly.

Thanks, thats good information

Wow .. what a stunner , beautiful bike. 👊

Oh, and thanks for your how-to videos on wrenching on these bikes, they've been very helpful and inpiring as well!

Bought my 1972 r60/5 in 2005, and it ran great, but not knowing history, I was planning on doing a back to front maintenance job, but third kid, then divorce yada yada. I lost most everything, but never let that bike go. Last kid moved out last summer, so finally have the time and money to work on it and am enjoying every minute of it. I'm not surprised at all by how much money it took to rebuild yours. I don't expect to ever get the money spent out of my bike, but the satisfaction I get is well worth the cost. Two of my kids plan to get their mototcycle licenses when they can, so hopefully can pass it on to them someday :-)

Mine starts perfect very time. It is a very nice bike.

That was a reasonable and honest statement for everbody who concerns buying a vintage bike. The bike looks very nice, but I would prefer the genuine snowflake or even spoke wheels over these aftermarket maybe Lester wheels.

That was a reasonable and honest statement for everbody who concerns buying a vintage bike.

I got a 1980 R100Rt that was a basket case that was involved in a garage fire, payed $300 for the cases that weren't on it during the fire and the bike was free. At first I thought I might part it out but in the end I decided "hell, I can fix this, I'll build an RS out of it" Already had an RT and a GS and did my own work. Anyway, I stripped it down to a bare frame and an engine block and started finding parts. The one good thing is they are relatively easy to work on and parts are available. It turned out to be right when Covid happened and I had time to work on it. Long story short, I built it hand picking the best of everything, a true "Frankenstein" bike but it came out great, it's truly mine as much as my kid. I never added up the receipts (don't really want to know) and I know I could have bought a real one for less, but where's the fun in that? So I understand and thanks for this video-

Great video and I’m also one who enjoys riding and working on a motorcycle so it’s worth the upside down economics of vintage motorcycles

Привет. Какой краской красили бак и крылья?

Great job/video. Do you have stereo ? - the sound is only coming through one ear

Very truthful video! After watching this I think I'll pass on doing a restoration. I'm a gear head and I do my own maintenance on my 2005 BMW GS 1200. That's enough for me plus I just don't have the money for this type of project.

The reason for buying this is because it looks like a real bike,i honestly cant tell most modern bikes apart,reason why i bought a new royal enfield 650gt and now a 80 r100rs

Nice job. I like the treatment to the shape of the seat pad and cover. It looks modified. It blends perfectly to the tank. I have an '86 RT exactly like the one you have there. I have converted it to a standard after 25 years of storage by the pervious owner. Cheers.

As an ex airhead owner in the 80's/90's I think you've restored it to look beautiful, and as you say unique. You bring home the true costs if I ever want to own another airhead at that level of restoration! I also enjoy your spannering vids 👍.

That 75/7 is beautiful...

LHS side sound only?

Thank you for this. I bought a very badly trashed '77 R100/7 for $1000 Cdn and spent an entire year working on my own to restore it. I spent over $!0,000 in parts and paint. I spent an additional $2000 for special tools. I think it belongs in my living room now because it is such a beautiful machine. I will never recover the costs but what I learned in the process is priceless. I went on to restore and maintain three K bikes (K1100, K100RS and K75S ) two of which I still have and I also bought a 2002 R1150RT which I lovingly maintain and ride regularly. I don't think I will every have to take a machine to a dealer for repair now that I have the tools and confidence to do it myself. I must confess though that I had been recently divorced when I took on the project and this gave me the kind of self imposed isolation and therapy I much needed. It was worth every penny.

I think a person has to consider reusing things. In the car world they are calling it recommission. This kind of work is a DIY project, otherwise it's not worth it. One thing about a "project" is that you can sink money as you please rather than paying on a loan.

Very nice. Would like to see more of the bike.

Motor hiking! The sport of kings 😂

Thank you for this wonderful resource! Super informative.

Thanks for this video! Im rebuilding a set of konis for my XS650. This comes in handy. Did you use/find a rebuild manual? Cheers from the Netherlands

very good! Thank you!

Great walk through. Some day I will have something with DellOrtos and will be watching again 😂

Great video , thank you for making it , do you know the basic setting for the idle screw is it also one and a half turns out ? , also is that a vent hole port on the outside of the carb slide body , it has a slope side with a hole in it ? All the best , Don.

thank you

Good stuff. I reverted back to your full video as well. Very nice

Impeccable workmanship. Clearly explained. 10/10

When bleeding the caliper, you always want to place the bottle at least 5 cm above the bleeding valve to avoid air bubbles being sucked into the system whlie the bleeding valve is open.

Excellent video. Thank you for posting!

Very informative, thank you!

You got yourself into the best thing that will happen to you….

I am curious why you didn't use the Euro ignition system that was on the bike? Was it failing?

Thanks for all the great tutorials! If I do not intend to take the valves apart to lap them, can I still still do the buffing wheel technique to get rid of the carbons on the valve and the cylinder head?

Fantastic video. I have just removed the threaded ring on my 80/7 and it has the remains of the old sealant which I am cleaning off. What is the name of the sealant you reseal the threads with. Thanks for the great tutorials

Amazing, thanks. Could you please share the putter diameter of the tool and the thickness of the teeth? I’m trying to build my own tools :)

What tool do you use for the pinion ring nut? Looks like a bolt? where did you get it?

My odometer mileage just went from 15k to 56k on a 5 minute ride. I'm about to use the video to remove and repair what ever went wrong. Will I be able to rotate those the miles back to the correct numbers with out causing more damage?