1971 Roadster - Long Slow Play

Joined
Jan 21, 2020
Messages
55
Country flag
Also managed to find a local vapour blaster who was good, fast, and cheap! Usually one only gets to pick 2 of the 3.

Before (only ultrasonically cleaned):


After:



Will have to run them through the ultrasonic cleaner again to ensure all the oil passageways are clear.

Have some Kibblewhite valves waiting at the post office for pickup this week, then need to stop procrastinating and put in an order to Andover for some engine rebuild bits.
 
Last edited:
Joined
Jan 21, 2020
Messages
55
Country flag
Does anyone have any experience purchasing and installing MAP rods?

Might be me overthinking, but I have started to consider saving for a set for peace of mind ....

I did some searching on the forum and didn't find much info.

All I know is my buddy’s dad swears by them and put them in just about all his British bikes.
 
Last edited:

grandpaul

VIP MEMBER
Joined
Jan 15, 2008
Messages
11,741
Country flag
The red circled area isn't a large crack that's been welded, or is it?

(very typical crack/break location when a Commando lets go)
aabike.jpg
 
Joined
Jan 21, 2020
Messages
55
Country flag
The red circled area isn't a large crack that's been welded, or is it?

(very typical crack/break location when a Commando lets go)
Hello grandpaul,

It doesn't appear to have been repaired. Instead it looks like a really rough casting.






I may need to get the dremmel out and clean up some of rough edges.
 
Joined
Nov 4, 2007
Messages
1,071
Country flag
Does anyone have any experience purchasing and installing MAP rods?

Might be me overthinking, but I have started to consider saving for a set for peace of mind ....

I did some searching on the forum and didn't find much info.

All I know is my buddy’s dad swears by them and put them in just about all his British bikes.
If you search in the forum , you will find people having problem with the cap end bolts touching the case in some area , so you need either to grind the case (where the bolts hits the case ) or grind the rod bolts ...........I have done it with a pair of steal rods with mk3 case , though with JS steal rods in 850 it's OK . I will find the post ............
 
Joined
Nov 4, 2007
Messages
1,071
Country flag
 

Richard Tool

VIP MEMBER
Joined
Aug 3, 2019
Messages
575
Country flag
Hello grandpaul,

It doesn't appear to have been repaired. Instead it looks like a really rough casting.






I may need to get the dremmel out and clean up some of rough edges.
Looks like a mold parting line to me ...
 
Joined
Jan 21, 2020
Messages
55
Country flag
I had read about some interference issues, but most seemed to be in older threads.

Wasn’t sure if the issue had been resolved or not.
 
Joined
Jan 21, 2020
Messages
55
Country flag
Finally got the swing arm separated from the cradle.

Well, it actually wasn’t me. I had ship it off to my dad‘s buddy who happens to have a rather large shop press and torch.

 
Joined
Jan 21, 2020
Messages
55
Country flag

There was some pretty good galling at the spindle ends. But I was expecting some issues as one of the previous owners had hit oil zerks with a grease gun.
 
Last edited:
Joined
Jan 21, 2020
Messages
55
Country flag
The good news is the spindle cross tube does not appear to be wallowed out.

I am more concerned about the stressed mounting holes and notched edge of the cradle.

Is this one worth trying to save, or should I be searching for a completely a suitable replacement?

 
Last edited:
Joined
Jan 31, 2021
Messages
9
Country flag
Never thought of it that way.... Yes, the XS has silver barrels. Might be nice to have one each of each colour.

Truthfully, when I think of a British motorcycle, I think of a black barrels.
Great pictures - I will be pulling my 71 engine apart and you have given me plenty to check out as I go...I basically only have myself to blame if I find anything out of sorts ...although I am the second owner; it's been in my care for the last 42 years
 

grandpaul

VIP MEMBER
Joined
Jan 15, 2008
Messages
11,741
Country flag
The crankshaft was complete but needed to be split to check the the sludge trap. The nuts were staked and looked to have not been disturbed.

View attachment 17503

Made sure to punch/ mark the timing side for re-assembly.

View attachment 17504
I always stamp them with the point of the "V" facing the direction of rotation.

"Let's see, was it the timing side or the drive side that "V" was pointing to???" Ends that problem.
 
Joined
Jan 21, 2020
Messages
55
Country flag
It’s been a while since I have last posted, but have been busy collecting parts:

Original Steel Roadster Tank. it needs a bit of love, but is really solid and rust free inside



“S” Type chain guard from Colin Kelly. Not 100% stock, but period correct and won’t deposit chain lube all over the rear tire.



Norman Hyde stepped seat. Still not sure if I am going to use this and might sell.

Was going to convert to a roadster seat, but realized they don’t make them anymore and don’t have the heart to cut it up just to use the pan.






Just received in the mail today - Madass140 rods and stainless axles.

DHL beat the hell out of the box, but luckily everything made it relatively unscathed.


 
Last edited:
Top