Stock vs single piece crown wheel

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Davidsquaredson
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Tue Jun 27, 2017 1:48 pm

Hi, I've got an all stock '63 Li150 with 4,000 original miles I'm cleaning up. Someone mentioned to me that the new single piece crown wheels are far superior. I was unaware that this is a problem and I'm sceptical and will reuse what I have. But thought I'd ask the community.

Tx
DavidImage

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carpe scooter diem

1974 Rally 200
1965 Li150
1963 TV175
1974 Eibar Jet200

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garry inglis
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Tue Jun 27, 2017 2:42 pm

The original is two piece riveted and perfectly fine for most engine rebuilds but for high horspower a non riveted is better as they can come loose I've a two piece on my rb2oo pushing out 21.hp and it's fine

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fairspares
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Tue Jun 27, 2017 3:43 pm

Heres a standard 125 engine ive just stripped , dosnt have to be a high power motor to fall apart.
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garry inglis
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Tue Jun 27, 2017 5:14 pm

Thats the old cushdrive sprocket wich were even werse and looking at the groove it must have been making some noise so if people dont investigate this is what happens PLUS an easy fix is two give the rivets a tap with a ball pain hammer and under basic maintenance checking clutch /endplate / front sprocket you have more chance of spotting any such problems in my ho

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a.lo.v2
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Tue Jun 27, 2017 7:49 pm

be careful, ive have never seen one of these that has not got broken springs, and all from standard engines!

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garry inglis
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Tue Jun 27, 2017 8:14 pm

Yes I've just realised in the top picture I didn't see it was the early type definitely bin it I thought you were on about the two piece riveted

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B-Race Tuning
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Tue Jun 27, 2017 8:20 pm

David, yours is the 'cush drive' type and would highly recommend that you change it, even for a cheap Indian one. Check when you get it that it is actually 'round'. Rotate it, mounted without chain against a fixed marker (bit of welding wire bolted to engine stud), or a dial gauge. If it isn't, SEND IT BACK for a replacement. Not enough people sending stuff back, and ending up paying twice/ thrice. Use a 'reputable' dealer for good quality, not joe on ebay. (sorry if you're a good joe reading this). S

Davidsquaredson
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Fri Jun 30, 2017 10:19 pm

Hey,
thanks very much. All good feedback, much appreciated.

David
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carpe scooter diem

1974 Rally 200
1965 Li150
1963 TV175
1974 Eibar Jet200

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