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stroker
Posted: Sat Sep 07, 2013 2:03 am
by mmeadows
why are stroker cranks not recommended for daily use?
is it the case is likely to leak air? none are available with an oil pump gear?
or.....
Re: stroker
Posted: Sat Sep 07, 2013 3:19 pm
by kingearwig
IRC my ruima 43.4mm mini stroker (no case mod needed) has the worm gear for an oil pump. I also had a stock sized crank that did not.
Re: stroker
Posted: Sat Sep 07, 2013 4:11 pm
by Trafficjamz
mmeadows wrote:why are stroker cranks not recommended for daily use?
is it the case is likely to leak air? none are available with an oil pump gear?
or.....
What?!! who said that?
There
is a 50mm crank from PG that has the oil pump gear.
If your stoker is built well, it should not leak air.
A stroker crank will hammer on the bearings and chew up belts a lot quicker than a stock crank will.
So i guess reliability of the scooter would be one reason not to have a stoker for a DD.
Re: stroker
Posted: Sun Sep 08, 2013 4:03 am
by mmeadows
[/quote]
A stroker crank will hammer on the bearings and chew up belts a lot quicker than a stock crank will.
So i guess reliability of the scooter would be one reason not to have a stoker for a DD.[/quote]
thats what i was wondering. maybe one could counter these issues with ceramic bearings and trying to carry an extra belt?
are ceramic bearings "stronger" or just more heat resistant and less likely to fail.
Re: stroker
Posted: Wed Sep 11, 2013 3:25 am
by fujio001
Ceramic bearings are harder and not stronger. They are used in road cycling and tests show they really are not faster under load. When improperly matched to soft bearing races, they can actually be slower because they deform the bearing races. What really matters is the roundness of the bearing. Bearings in other uses often use an ABEC scale to measure how round they are. Higher the number, the less resistance they offer and the faster they can be.