Yer can bollox
I'm not touching the rt it's ferkin perfic. Yeh I know brotherly love an all that
I'm not touching the rt it's ferkin perfic. Yeh I know brotherly love an all that
Bertha lives
- Thread starter sycomoto
- Start date
Well, after properly charging the battery I have started her up and checked the voltages.
I now get 13.8 on tickover and 14+ when I rev her so all is looking good
Who knows, we may be finally rounding the corner
I now get 13.8 on tickover and 14+ when I rev her so all is looking good
Who knows, we may be finally rounding the corner
Removed the gearbox today in about 1/2 an hour!!!
Go no gas left in oxy acetylene torch now and the frame might need welding back together, but I think it's ready to be packed up and shipped to another hero of Airheadedness for it's rebuild 
Actually it was probably the easiest job I've done on her yet. Rang uncle Rob and he tentatively answered the phone, but I gave him good news for once
Go no gas left in oxy acetylene torch now and the frame might need welding back together
, but I think it's ready to be packed up and shipped to another hero of Airheadedness for it's rebuild Actually it was probably the easiest job I've done on her yet. Rang uncle Rob and he tentatively answered the phone, but I gave him good news for once
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Is there anything yellow splashing down on you ?
Cos your dad must be pissing himself with laughter having sold you that nail
Cos your dad must be pissing himself with laughter having sold you that nail
Is there anything yellow splashing down on you ?
Cos your dad must be pissing himself with laughter having sold you that nail
I think he was making sure that I learned the ins and outs of mechanics and continued his legecy
Gearbox only needs doing because of the smallest of leaks from the backplate. Unfortunately it lands straight on the exhaust and chokes you with burning oil fumes at traffic lights
Other than that it works quite nicely. No doubt when it gets pulled apart something will be found!!
OK, I'll match Brassmonkey's offer and raise him £10 to £60 to take it off your hands.
(Delivered to Devon...)
(Delivered to Devon...)
Ya can all bugger off!!
Syco is the only guy I'd sell the old shitter to and he's gonna have to win the lottery before he can afford her thanks to all the new bits
Just noticed that on of the tangs has snapped off the neutral switch, bugger, there's another £26
Just hope that the gearbox looks ok when it's stripped down otherwise I may have to shed a few tears
Fitted new idiot lights (all the same as opposed to the mismatched ones that were on her) and I've ordered a very funky little digital voltage meter to keep an eye on the charging system.
Need to have a chat with Kais regarding getting the rear shock re-bushed but hopefully this won't be too painful to the wallet.
I think winters project will be getting Ritchie Moore to look at the cylinders, pistons and heads for me (I've started saving already!!).
By the time she's finished she should run beautifully, but still look pig ugly!!
Syco is the only guy I'd sell the old shitter to and he's gonna have to win the lottery before he can afford her thanks to all the new bits
Just noticed that on of the tangs has snapped off the neutral switch, bugger, there's another £26
Just hope that the gearbox looks ok when it's stripped down otherwise I may have to shed a few tears
Fitted new idiot lights (all the same as opposed to the mismatched ones that were on her) and I've ordered a very funky little digital voltage meter to keep an eye on the charging system.
Need to have a chat with Kais regarding getting the rear shock re-bushed but hopefully this won't be too painful to the wallet.
I think winters project will be getting Ritchie Moore to look at the cylinders, pistons and heads for me (I've started saving already!!).
By the time she's finished she should run beautifully, but still look pig ugly!!
brassmonkey001
I should change this
I think he was making sure that I learned the ins and outs of mechanics and continued his legecy
Gearbox only needs doing because of the smallest of leaks from the backplate. Unfortunately it lands straight on the exhaust and chokes you with burning oil fumes at traffic lights
You sure it's not oil coming out of the airbox?
No matey, defo the gearbox. If you look at a rebuilt one you'll always see a nice new gasket between the main case and the backplate. Mine appears to not have one which makes me wonder whether dad might have reused the old one and a bit of gasket sealer, or just gasket sealer.
Airbox innards and tubes were nigh on spotless (must check engine oil level
).
Had a lovely long chat with Guru Bob yesterday.
Seems that I was correct about the lack of gasket on the back plate
Unfortunately I wasn't so right about the rest of the box. The pre phone call email contained many many words, most seemed to centre around three main words:
Buggered
Worn
Knackered
Rather than try to read it through my tears I decided a chat with Bob would be preferable. This was definately the right choice as not only was he very informative, but he eased the pain by saying he'd seen a worse one (that required all but the cases to rebuild).
Anyway, the bill looks to be far more substantial than a £3 gasket, but I'm happy that the Guru has had a look and is going to be fixing it to within an inch of it's miserable ex German built life.
So far the engine has been rebuilt (bottom end, unfortunately the top end needs looking at at some point), the gearbox has been overhauled, the steering bearings replaced, pivot bearing replaced, wiring loom overhauled and sorted, ignition system replaced, charging system replaced (Stator, Rotor and Diode Board), Cam chain and chain gear renewed, new cylinder (right hand side). Speedo replaced, idiot lights replaced, indicator control box replaced.
Should we start a book on the next failure
Seems that I was correct about the lack of gasket on the back plate
Unfortunately I wasn't so right about the rest of the box. The pre phone call email contained many many words, most seemed to centre around three main words:
Buggered
Worn
Knackered
Rather than try to read it through my tears I decided a chat with Bob would be preferable. This was definately the right choice as not only was he very informative, but he eased the pain by saying he'd seen a worse one (that required all but the cases to rebuild
).Anyway, the bill looks to be far more substantial than a £3 gasket, but I'm happy that the Guru has had a look and is going to be fixing it to within an inch of it's miserable ex German built life.
So far the engine has been rebuilt (bottom end, unfortunately the top end needs looking at at some point), the gearbox has been overhauled, the steering bearings replaced, pivot bearing replaced, wiring loom overhauled and sorted, ignition system replaced, charging system replaced (Stator, Rotor and Diode Board), Cam chain and chain gear renewed, new cylinder (right hand side). Speedo replaced, idiot lights replaced, indicator control box replaced.
Should we start a book on the next failure
Lets be fair Flip. Bertha has done a round the world trip and has covered over 100,000 miles so a few worn bits are allowed
Lets be fair Flip. Bertha has done a round the world trip and has covered over 100,000 miles so a few worn bits are allowed
The box is currently enjoying its holiday in Scotland while I await delivery of an input shaft shock absorber and spring. All the other replacement bits are here but I wanted Flip's permission before ordering anything else
.The output shaft front bearing has obviously siezed at some point before Pastyman replaced the bearings. Unfortunately the new bearing was slack on the worn shaft allowing it to move around so much that the selector forks and 3rd gear pinion are toast.
I have a nice replacement output shaft from MotorWorks and the jammy B now has one with a circlip groove in it. I happen to have a nice new never-used BMW circlip so I'll put that in. I had to pay £50.00 to get the shafts in each of my gearboxes converted
.Search as I might, I couldn't find any shims in the box
. Never mind, I have a good stock And I've replaced those nuts & bolts that had rounded corners
.Rob is right, this box has had an 'interesting' life. However, I am confident it will get Flip to Southern Spain (and back again)
.I'll take photos of the 'before and after' bits when everything is to hand.
Bertha shall live again.
Bob.
Which reminds me . . .
Brassmonkey - Is your neighbour's gearbox likely to be heading my way anytime ???
Bob.
Brassmonkey - Is your neighbour's gearbox likely to be heading my way anytime ???
Bob.
Lets be fair Flip. Bertha has done a round the world trip and has covered over 100,000 miles so a few worn bits are allowed
Triggers Broom???
The box is currently enjoying its holiday in Scotland while I await delivery of an input shaft shock absorber and spring. All the other replacement bits are here but I wanted Flip's permission before ordering anything else
The output shaft front bearing has obviously siezed at some point before Pastyman replaced the bearings. Unfortunately the new bearing was slack on the worn shaft allowing it to move around so much that the selector forks and 3rd gear pinion are toast.
I have a nice replacement output shaft from MotorWorks and the jammy B now has one with a circlip groove in it. I happen to have a nice new never-used BMW circlip so I'll put that in. I had to pay £50.00 to get the shafts in each of my gearboxes converted
Search as I might, I couldn't find any shims in the box
And I've replaced those nuts & bolts that had rounded corners
Rob is right, this box has had an 'interesting' life. However, I am confident it will get Flip to Southern Spain (and back again)
I'll take photos of the 'before and after' bits when everything is to hand.
Bertha shall live again.
Bob.
I told ya guys, how can you not have confidence in that kind of attention to detail
Rob and Bob to the rescue
It's hard to express my gratitude for all your help guys. I know Rob spent more than a few hours pouring over Bertha in an attempt to fix her up. Bob has now done a tremendous job with the gearbox and Daz my brothers mate (Bentley development wiring guru) has also had a few days of battling with the rats nest to sort out the knackered wiring.
Hopefully all the hard work will eventually pay off and Bertha will finally be back on the road frightening people with her "interesting" looks
I hope ya proud of me pops
Rob is right, this box has had an 'interesting' life. However, I am confident it will get Flip to Southern Spain (and back again)
Bob,
Don't forget what I said...Just TO Southern Spain will be good enough. Don't worry about the "and back again" bit
Bob,
Don't forget what I said...Just TO Southern Spain will be good enough. Don't worry about the "and back again" bit
Actually . . I reviewed my post and added the "and back again" as an afterthought.
Bob.
Alright now gentlemen, there's no need for that now is there?
Nah, in hindsight, I'd say there's plenty of need It's not me, it's the bike, honest gov
Nah, in hindsight, I'd say there's plenty of need
It's not me, it's the bike, honest gov
The gearbox is in 
Only cock up was not installing the neatral light wires before sliding it home. I finally got them fitted whilst the gearbox was fixed in place, but what a stupidly hard job for something so minor.
Anyways, I got the old girl started again and all seems ok so we'll see after the test ride (which won't happen until the rear shock comes back).
I did notice some rattling whilst the clutch is disengaged (disappears when you pull the clutch in) which I assume is the clutch thrust bearing
The gearbox also whines a little, but I'm sure a few miles on it will sort it out
I'm happy though, no oil leakage and she started (although need a special tune from someone who knows what they are doing).
Only cock up was not installing the neatral light wires before sliding it home. I finally got them fitted whilst the gearbox was fixed in place, but what a stupidly hard job for something so minor.
Anyways, I got the old girl started again and all seems ok so we'll see after the test ride (which won't happen until the rear shock comes back).
I did notice some rattling whilst the clutch is disengaged (disappears when you pull the clutch in) which I assume is the clutch thrust bearing
The gearbox also whines a little, but I'm sure a few miles on it will sort it out
I'm happy though, no oil leakage and she started (although need a special tune from someone who knows what they are doing).
Good news
About the rattle . . Have you adjusted the clutch operating arm correctly. There is a very complicated procedure about this somewhere.
From memory, you adjust the actuating lever so that its 'all slack taken-up' position is 203mm from the rear of the casting on the gearbox that carries the clutch cable, then adjust the clutch lever free play at the bar to 2mm at the pivot.
Someone will have the link to the proper procedure (I recall a three page article in the BMW Club mag some years ago).
The splines on the input shaft were OK - I put an old clutch plate on it and it was a nice sliding fit with no slack.
I'm not surprised it whines a bit. Its got cogs from four different boxes in there plus some new bearings and everything is shimmed-up. The gears will take time to get to know one another
I would give the box an oil change at 500 miles and have a good look at what comes out. Hopefully nothing more than discoloration of the oil.
The gear lever shaft is quite scored. I coated it in 'Optimol T' white paste and replaced the seal. However if you find its leaking you may need a better used one from Motorworks. Fortunately Its easily changed without affecting anything else (lean the bike over on its RH side though or you will get a puddle of oil).
Let us know how it is on the road.
Bob.
About the rattle . . Have you adjusted the clutch operating arm correctly. There is a very complicated procedure about this somewhere.
From memory, you adjust the actuating lever so that its 'all slack taken-up' position is 203mm from the rear of the casting on the gearbox that carries the clutch cable, then adjust the clutch lever free play at the bar to 2mm at the pivot.
Someone will have the link to the proper procedure (I recall a three page article in the BMW Club mag some years ago
).The splines on the input shaft were OK - I put an old clutch plate on it and it was a nice sliding fit with no slack.
I'm not surprised it whines a bit. Its got cogs from four different boxes in there plus some new bearings and everything is shimmed-up. The gears will take time to get to know one another
I would give the box an oil change at 500 miles and have a good look at what comes out. Hopefully nothing more than discoloration of the oil.
The gear lever shaft is quite scored. I coated it in 'Optimol T' white paste and replaced the seal. However if you find its leaking you may need a better used one from Motorworks. Fortunately Its easily changed without affecting anything else (lean the bike over on its RH side though or you will get a puddle of oil
).Let us know how it is on the road.
Bob.
Righty ho, took the old girl for a whizz around this afternoon. The gearbox was a little stiff at first and a tad tough to get into first gear. 80 miles later and it is snickerty boo
Takes very little pressure to change gear now, just a positive click as she selects the required cog. Thanks Bob, you're a genius.
Unfortunately there is still an underlying issue that I just can't get to the root of. Generally the bike accelerates well and is great to ride, but then intermittently is stumbles and misfires for a while. It really feels like a fueling issue to me but I'm stumped.
It's had a new coil, new charging system (which is working fine) and a new ignition (now electronic).
Am I right to think fueling? Uncle Rob has replaced rubbery bits inside the carbs, cleaned them and checked the jetting, but I wonder whether all the standing around has gummed them up. however, surely this would affect them all the time??
It does seem to happen once the speed get up to a certain level.
Any help would be appreciated. I found the love again this afternoon (probably because I actually got home on the bike and not on the back of an RAC truck).
Takes very little pressure to change gear now, just a positive click as she selects the required cog. Thanks Bob, you're a genius.
Unfortunately there is still an underlying issue that I just can't get to the root of. Generally the bike accelerates well and is great to ride, but then intermittently is stumbles and misfires for a while. It really feels like a fueling issue to me but I'm stumped.
It's had a new coil, new charging system (which is working fine) and a new ignition (now electronic).
Am I right to think fueling? Uncle Rob has replaced rubbery bits inside the carbs, cleaned them and checked the jetting, but I wonder whether all the standing around has gummed them up. however, surely this would affect them all the time??
It does seem to happen once the speed get up to a certain level.
Any help would be appreciated. I found the love again this afternoon (probably because I actually got home on the bike and not on the back of an RAC truck
).
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