- Joined
- Apr 15, 2009
- Messages
- 11,520
Re: New member
That's not your first rodeo, is it?
That's not your first rodeo, is it?
Marks Norton Commando Rebuild
- Thread starter Brownymark
- Start date
- Joined
- Apr 15, 2015
- Messages
- 67
Re: New member
Rodeo?
Rodeo?
- Joined
- Apr 15, 2015
- Messages
- 67
Re: New member
Thanks - I think looking on this forum I have a lot to learn, I need some help over the coming months but looking forward to it.
Thanks - I think looking on this forum I have a lot to learn, I need some help over the coming months but looking forward to it.
- Joined
- Apr 15, 2015
- Messages
- 67
Re: New member
By the way this is the first other than an rd250 probably 25 years ago!
By the way this is the first other than an rd250 probably 25 years ago!
- Joined
- Apr 15, 2009
- Messages
- 11,520
Re: New member
Yes, but is the metalworking skills yours, like the fixed fins?
Brownymark said:
Yes, but is the metalworking skills yours, like the fixed fins?
- Joined
- Apr 15, 2015
- Messages
- 67
Re: New member
No - why?
No - why?
- Joined
- Apr 15, 2009
- Messages
- 11,520
Re: New member
Just wondering.
Brownymark said:
Just wondering.
- Joined
- Apr 15, 2015
- Messages
- 67
Re: New member
Very nice - something to aspire to. Were they red like this from the factory, I found traces of black under the tank and behind the side panels, I here enquired with NOC but they have no further details other then the dealer it was shipped to in the US and when?
Very nice - something to aspire to. Were they red like this from the factory, I found traces of black under the tank and behind the side panels, I here enquired with NOC but they have no further details other then the dealer it was shipped to in the US and when?
- Joined
- Nov 20, 2004
- Messages
- 20,097
Re: New member
Your steel tank is from an 850 Mk.3. Original 1971 Roadster tanks were fibreglass, not steel (the filler cap would've hinged in the opposite direction and the tank was fastened at the rear by a rubber band instead of a steel strap).
http://bigdcycle.com/tempbooks/nor/1971.pdf
(pdf p.73 & 74)
'Solid Signal Red' was a standard Roadster colour for '71.
(Edit: Your 'as delivered' photos show the headlamp brackets fitted upside down on the wrong side of the forks which I trust you are aware of? When fitted correctly, the slots are horizontal. The front mudguard also appears to be an 850 Mk3 item - stainless steel(?) and no holes for a front stay, the lower stay is also not the correct part.)
Brownymark said:
Your steel tank is from an 850 Mk.3. Original 1971 Roadster tanks were fibreglass, not steel (the filler cap would've hinged in the opposite direction and the tank was fastened at the rear by a rubber band instead of a steel strap).
http://bigdcycle.com/tempbooks/nor/1971.pdf
(pdf p.73 & 74)
'Solid Signal Red' was a standard Roadster colour for '71.
(Edit: Your 'as delivered' photos show the headlamp brackets fitted upside down on the wrong side of the forks which I trust you are aware of? When fitted correctly, the slots are horizontal. The front mudguard also appears to be an 850 Mk3 item - stainless steel(?) and no holes for a front stay, the lower stay is also not the correct part.)
- Joined
- Apr 15, 2015
- Messages
- 67
Re: New member
Thank you LAB - most observant of you, I had no clue the brackets were upside down!
You are also correct re the Stn stl mudguard, would you suggest I order stays for a later machine to ensure they fit? I have seen quite a few Nortons with only the lower stay but guess non left the factory like that.
I suspect my centre stand may be a later also as the mounting brackets go all the way down to the tube rather than stopping short, the fittings are different between the 71 & 73 so I guess I should order the later fittings (the ones which came with the bike were a bit of a mismatch). They are listed as high tensile so I want to be sure they are the correct bolts.
Many thanks again for your assistance - and sharp eyes.
Thank you LAB - most observant of you, I had no clue the brackets were upside down!
You are also correct re the Stn stl mudguard, would you suggest I order stays for a later machine to ensure they fit? I have seen quite a few Nortons with only the lower stay but guess non left the factory like that.
I suspect my centre stand may be a later also as the mounting brackets go all the way down to the tube rather than stopping short, the fittings are different between the 71 & 73 so I guess I should order the later fittings (the ones which came with the bike were a bit of a mismatch). They are listed as high tensile so I want to be sure they are the correct bolts.
Many thanks again for your assistance - and sharp eyes.
- Joined
- Nov 20, 2004
- Messages
- 20,097
Re: New member
062323 is the correct stay. Originals were silver/grey but chrome and stainless options are available. Only the 850 Mk.3 models had the single stay (not including 750 SS, PR etc.) because with the caliper moved to the left side on the Mk.3, the front stay couldn't be fitted (at least not without extending the mudguard).
http://www.nortonmotors.de/ANIL/Norton% ... 021&Part=2
Yes, I had noticed it was a later 064031 "850" centre stand. This could be bought as a kit to fit earlier (71-on) models (stand, bolts, nuts, 064873 bush/spacers). Fit the bolts with the heads inside the cradle, and the nuts on the outside.
http://www.nortonmotors.de/ANIL/Norton% ... &Plate=013
Brownymark said:
062323 is the correct stay. Originals were silver/grey but chrome and stainless options are available. Only the 850 Mk.3 models had the single stay (not including 750 SS, PR etc.) because with the caliper moved to the left side on the Mk.3, the front stay couldn't be fitted (at least not without extending the mudguard).
http://www.nortonmotors.de/ANIL/Norton% ... 021&Part=2
Brownymark said:
Yes, I had noticed it was a later 064031 "850" centre stand. This could be bought as a kit to fit earlier (71-on) models (stand, bolts, nuts, 064873 bush/spacers). Fit the bolts with the heads inside the cradle, and the nuts on the outside.
http://www.nortonmotors.de/ANIL/Norton% ... &Plate=013
- Joined
- Apr 15, 2015
- Messages
- 67
Re: New member
Perfect thank you.
So is 067311 not suitable for this later stand?
Perfect thank you.
So is 067311 not suitable for this later stand?
- Joined
- Dec 3, 2010
- Messages
- 644
Re: New member
That's a great project and moving along quickly for the new year. I don't want to teach you to suck eggs but I'm sceptical about the engine component cleaning after aqua blasting. I had my cylinder head done a long time ago. When I subsequently removed it and took out the rocker spindles there was blast media sitting in the flats of the spindles. I had spent a lot of time cleaning that head but obviously not enough. Dishwasher, ultrasonic, petrol, MEK, anything, just make sure it's cleaner than gold pants. LOL (current TV ad for bum wipes)
That's a great project and moving along quickly for the new year. I don't want to teach you to suck eggs but I'm sceptical about the engine component cleaning after aqua blasting. I had my cylinder head done a long time ago. When I subsequently removed it and took out the rocker spindles there was blast media sitting in the flats of the spindles. I had spent a lot of time cleaning that head but obviously not enough. Dishwasher, ultrasonic, petrol, MEK, anything, just make sure it's cleaner than gold pants. LOL (current TV ad for bum wipes)
- Joined
- Apr 15, 2015
- Messages
- 67
Re: New member
Gripper was spot on, there was a lot of media in the flats of the spindles. I was removing them anyway as I intend to follow the INOA recommendations of fitting intake valve guides which take oil seals and converting to Stellite tipped valves.
Tank cleaning going well, I can't believe how much rust came out of it but it looks very good inside now. Currently it's drying in the house prior to sealing with 3 part POR15 kit at the weekend.
Trying to get all the messy bits out of the way before the fun starts rebuilding.
New shocks arrived today
Gripper was spot on, there was a lot of media in the flats of the spindles. I was removing them anyway as I intend to follow the INOA recommendations of fitting intake valve guides which take oil seals and converting to Stellite tipped valves.
Tank cleaning going well, I can't believe how much rust came out of it but it looks very good inside now. Currently it's drying in the house prior to sealing with 3 part POR15 kit at the weekend.
Trying to get all the messy bits out of the way before the fun starts rebuilding.
New shocks arrived today
Deckard
VIP MEMBER
- Joined
- Jun 18, 2009
- Messages
- 361
Re: New member
I noticed on both your '71 and aceaceca's Commando the engine case serial number is stamped on the curved section of the case above the breather and not the flat area. I thought that was only prior to '71. Do your frame, transmission and engine serials all match? Maybe LAB can shed some light on that change if all your numbers match. Otherwise, your Commando has all the other traits of a '71. My '71 was built in May and the engine serial number is stamped on the flat section of the case.
I noticed on both your '71 and aceaceca's Commando the engine case serial number is stamped on the curved section of the case above the breather and not the flat area. I thought that was only prior to '71. Do your frame, transmission and engine serials all match? Maybe LAB can shed some light on that change if all your numbers match. Otherwise, your Commando has all the other traits of a '71. My '71 was built in May and the engine serial number is stamped on the flat section of the case.
- Joined
- Nov 20, 2004
- Messages
- 20,097
Re: New member
I don't know exactly when the change occurred but somewhere between (20M3S)143958 and 146666 going by serial numbers we've seen, so during the early months of 1971? Perhaps our members with '71 Commandos within that range of numbers can narrow it down?
Deckard said:
I don't know exactly when the change occurred but somewhere between (20M3S)143958 and 146666 going by serial numbers we've seen, so during the early months of 1971? Perhaps our members with '71 Commandos within that range of numbers can narrow it down?
Time Warp said:
kiwi46 said: