SIL Crank

[Toddy]

Anyone tried one of these ? Only wanting it for a standard motor

http://www.scooterrestorations.com/lamb ... y-damaged/

[CHRIS in MARGATE]

Not so attractive with only £15 off.
Now at half price incl. postage; I'd take 2.

[Toddy]

Not so attractive with only £15 off.
Now at half price incl. postage; I'd take 2.

????

[MickYork]

Not so attractive with only £15 off.
Now at half price incl. postage; I'd take 2.

????

£15 off but no guarantees and a bit of cleaning to do......not worth it IMO.
But, as said above, make it half price and pay the postage and it's more attractive.

[CHRIS in MARGATE]

That's about it. They have 100 to clear so most probably bought at a very attractive price. Not knocking them, -they are a business and have to make a living. For an extra £15 which is not a lot you have peace of mind in a new build instead of worrying if oil seals are weeping or similar.
Put them on ebay; they'll fly off the shelves !

[Scooterdude]

Cheap yes, but in my opinion not worth the possible hassle. Old adage: buy cheap buy twice comes to mind.

[Storkfoot]

The webs are worth more than that. Stick a decent conrod and big end bearing on and you have a good crank for decent money.

In answer to Toddy's question, I'd question the big end bearing if the rest had spots of rust.

[ladsdad]

Hi Mate
Like everyone else say's, steer clear unless you just want it for the webs...
I'm sure you remember waiting on the M4 services a few years ago when I had to cut that con rod off that siezed solid crank out of Linda's engine..!
Some of them run for 1000's of miles like mine or less than 300 like that one did... Save yourself the Hassel & pay a bit extra for a mec crank or similar & forget about it...

Cheers Mark.
Btw nice to see you the other week too mate!

[Toddy]

Cheers all

[rossclark]

How much rust can a crank stand before it's a loss?

[a-teamlambretta]

Ey up,

They used to do one with a Japanese big end bearing , I had a couple of these with no issues

[a.lo]

How much rust can a crank stand before it's a loss?

not a lot, if as it states it is on the oil seal lip. I can,t believe there is any fix for that. regardless of fitting new rods/bearings

[Warkton Tornado No.1]

The seal surfaces should not be polished to a high degree as there needs to be some lubricant retention. Otherwise, the seal will fail if it is too smooth or rough. My own procedure is to Scotchbrite the areas where the lip runs which gives a slightly matt finish.

One manufacturer of seals is Eriks & this is part of what they say:

"For normal circumstances, the shaft in the region of the seal must have a surface roughness of approximately: Ra = 0,4 - 0,8 mm

Rmax ≤ 6,3 mm"

I hope that helps....

[Adam_Winstone]

How much rust can a crank stand before it's a loss?

not a lot, if as it states it is on the oil seal lip. I can,t believe there is any fix for that. regardless of fitting new rods/bearings

^... my thoughts too. I'd want to confirm that the one that I was buying did not have rust on the oil seal faces... wouldn't be too bothered about anything else, other than extreme thread damage, as new rod and bearing required and anything else could be cleaned up.