Boxerworks.com

A couple of questions... Is the ignition system on the bike completely original. Some aftermarket systems institute a delay in the impulse (for various reasons)? Have you ever checked the timing (I mean personally) and been able to set it up correctly? Has any work been done on the engine (or the be...

I would suggest that the old cap has been becoming 'weak' over a long period and you have been adjusting the idle to take this into account. The idle speed is, after all, a delicate balance involving a lot of factors and even a small variation in any of those factors will lead to a change in idle sp...

FWIW, I didn't include it in my answer because it doesn't answer the issue in the thread. Yes, I still believe it to be a worthwhile mod but lack of it is unlikely to cause the issues raised... and fitting it will probably not improve them.

Rob

OK... 1) 13.3 volts is too low for an airhead charging circuit with a fully charged battery but, as has already been said, if the battery is low (or in poor condition) it can pull the charging voltage below the optimum. FWIW, the optimum should be regarded as between 13.75 volts and 14.2 volts. Advi...

That level seems about right to me... the exact level isn't as critical as many people would like to think. I feel you should be looking for another issue. Forgive me if you've already given this information... it's a long thread now... how do you know that the engine runs 'rich throughout the range...

They are considerably more powerful... whether that equates to 'better' is a diferent thing. They are powerful enough to put you on your head if you abuse them. On my Mono R80RT, they are very nice to have, given the additional weight of the fairing. Whether they are needed on a 'naked' machine is d...

£25 is pretty good bearing in mind that second hand cans go for North of £80 at least and much more if you buy from a dealer (and that is often an exchange unit).

Rob

Crank mounted ignitions systems seem good in principle but as long as the timing chain is in good condition, they make very little difference. BMW specifies and accuracy of +/-3 degrees for ignition timing and the accuracy achievable with camshaft driven ignition systems is well within that.

Rob

Is the Ural Tranny bolt pattern the same as the Dnepr? I've got a friend with A Ural that has a crapped out motor. This could be the conversion for him. No, it isn't. I'm having a welder move the bolt holes on the transmission to match the BMW's pattern, but some other people have made adapter plat...

FWIW, I do have a couple of spares and Would be happy to send one but I fear the postage from the UK to the US would be disproportionate. It would probably be better and cheaper if you could source one closer to home.

Rob