Forum
For Royal Enfield owners and enthusiasts
- Tue Dec 11, 2018 9:05 am
#80583
I'm going to see if there's a local engineering firm who can check the crank for run out. It's beyond my capabilities..
- Tue Dec 11, 2018 10:59 am
#80586
As an indication that you might need to take the crank out for further analysis...
With the barrel off place a good steel rule resting edgeways against one pair of fore and aft barrel studs (using the parallel section of the studs) measure the distance between its edge and the eye and take a further comparative measurement when the eye is at its highest point having rotated the crank. Repeat around the other side.
With the barrel off place a good steel rule resting edgeways against one pair of fore and aft barrel studs (using the parallel section of the studs) measure the distance between its edge and the eye and take a further comparative measurement when the eye is at its highest point having rotated the crank. Repeat around the other side.
- Tue Dec 11, 2018 5:23 pm
#80593
Examined the crank before taking it to an engineering shop for a runout check and discovered the above.The surface hardening of the roller track has flaked off.
New crank required. I've had better days!
Examined the crank before taking it to an engineering shop for a runout check and discovered the above.The surface hardening of the roller track has flaked off.
New crank required. I've had better days!
- Tue Dec 11, 2018 5:36 pm
#80594
dave p, looking at that picture you have been VERY lucky not to have had an engine wrecking catastrophic failure.
- Tue Dec 11, 2018 6:14 pm
#80596
dave p, that pitted part on the crank is just the inner race of a bearing, which can be removed from the mainshaft and replaced with a new one. your crank may, or may not be out of true, but don't write it off yet!
- Tue Dec 11, 2018 6:58 pm
#80597
Hi BW. Yes, what you say is a great relief to me. I thought all Bullets had the rollers running directly on the crankshaft, not just the early ones. Adrian on MBR has disabused me of that notion as have you.
I'm feeling much better now, thank you.
I'm feeling much better now, thank you.
- Wed Dec 12, 2018 10:54 pm
#80611
Dave, that is a typical Indian bearing problem, but this has nothing to do with the piston woes, that is a basic engineering principle problem, something isn't square
- Thu Dec 13, 2018 7:30 am
#80614
Dave, it's was only Redditch/very early Indian bikes that had the bearings running directly on the crank.
- Thu Dec 13, 2018 8:29 pm
#80621
Norm,
I think we have two concurrent issues here. Your point about having (or needing) a properly aligned crankshaft is a perfectly good one, but as has been posted elsewhere this engine has done 30,000 miles, so as far as that main bearing is concerned, maybe it IS just a case of failed Indian hardening hardening on the inner race (the wear pattern looks pretty even). As you probably don't need reminding, the hardening on early Electra-X crankpins could go a lot sooner! Mine managed 17 and a bit thousand miles.
A.
I think we have two concurrent issues here. Your point about having (or needing) a properly aligned crankshaft is a perfectly good one, but as has been posted elsewhere this engine has done 30,000 miles, so as far as that main bearing is concerned, maybe it IS just a case of failed Indian hardening hardening on the inner race (the wear pattern looks pretty even). As you probably don't need reminding, the hardening on early Electra-X crankpins could go a lot sooner! Mine managed 17 and a bit thousand miles.
A.
Shop for accessories at Hitchcocks Motorcycles