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Post by Raizer on Mar 28, 2016 23:39:32 GMT -5
Dry ice works super well for crank/bearing fitting! With the bearings you will find it soo much cheaper to buy them from an industrial bearing shop rather than a scooter parts store!! And they will be the same exact part just without a Stage6 or whatever sticker on the SKF box.
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Jog-Mania
Mar 29, 2016 0:00:15 GMT -5
via mobile
Post by tsimi on Mar 29, 2016 0:00:15 GMT -5
RaizerThanks for the hint with the dry ice have seen it in your build thread. Even though NTN is a very popular bearing maker here in Japan I have a hard time finding the right bearing here. I don't mind to pay 30 bucks for a pair of bearings as long I get the right ones. I probably won't be using those Stage6 seals though, I'll get me some new, stock Yamaha crank seals.
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Post by Raizer on Mar 29, 2016 0:30:13 GMT -5
I think I paid under NZ$5 each for my SKF crank bearings, that's about US$3.20 currently. I'm struggling with Japanese on google, but I'm sure you would be able to find a trade supply store there somewhere that will have them/order them in.
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Post by tsimi on Mar 29, 2016 1:24:51 GMT -5
OK I think I found those bearings. NTN 6204C3 / Size: 20x47x14 for 280 Yen/pcs. NTN 6204C4 / Size: 20x47x14 for 280 Yen/pcs. currently SOLD OUT! or NSK 6204C3 / Size: 20x47x14 for 277 Yen/pcs. NSK 6204C4 / Size: 20x47x14 for 277 Yen/pcs. or SKF 6204 C? / Size: 20x47x14 for 369 Yen/pcs. (it says up to 20000 rpms!) Which one? Too many too choose from. C3 or C4? NTN, SKF or NSK? I need to solve this so that I can place the order tonight once scooter-attack is up and running again.
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Post by Lucass2T on Mar 29, 2016 1:31:50 GMT -5
I would buy plastic cage bearings. I dunno the exact theory behind it but they are better suited for performance engines. I put plastic cage bearings in every engin that has a faster cylinder/exhaust combo than stock.
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Post by Raizer on Mar 29, 2016 1:34:15 GMT -5
That's much more like it price wise!! I personally like SKF, have used them (and NSK) in many applications over the years. But I wouldn't hesitate to use NSK or FAG if I couldn't get SKF, I haven't really used NTN so I can't comment beyond that I know there meant to be really good.
C3 is what you want.
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Post by tsimi on Mar 29, 2016 1:35:08 GMT -5
I would buy plastic cage bearings. I dunno the exact theory behind it but they are better suited for performance engines. I put plastic cage bearings in every engin that has a faster cylinder/exhaust combo than stock. HEY! Lucas! Good timing! No plastic bearings at least I didn't search deep enough. Did you read what I want to buy? Stag6 HPC 12mm crank! Opinion? lol scooter-attack send me a reminder that I have a cart with stuff in it. lol they should get the site up and running so that I can order! Their site is up and running again....guys...help?! Crank OK or not? Bearings?
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Post by Raizer on Mar 29, 2016 1:43:47 GMT -5
HEY! Lucas! Good timing! No plastic bearings at least I didn't search deep enough. Did you read what I want to buy? Stag6 HPC 12mm crank! Opinion? lol scooter-attack send me a reminder that I have a cart with stuff in it. lol they should get the site up and running so that I can order! SKF Energy Efficient bearings have a polymer cage, the first large bearing I got sent for my engine was one. My bearing supplier didn't want to guaranty that the polymer would last for many years in a 2T, so he sent a steel cage replacement. /was probably easier to get hold of a steel cage large bearing than a polymer small bearing haha From our research the polymer bearings have a little less resistance than steel cage bearings, but I'm told unless you are building a full on race engine you are not going to see any real benefit over good quality steel caged bearings in a scooter engine.
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Post by tsimi on Mar 29, 2016 2:09:15 GMT -5
Guys? You leave me hanging here? The cursor is over the place order button already.
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Jog-Mania
Mar 29, 2016 2:17:37 GMT -5
via mobile
Post by Raizer on Mar 29, 2016 2:17:37 GMT -5
Looks like a really nice crank!
I'd probably grab the NTN C3 bearings you mentioned.
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Post by tsimi on Mar 29, 2016 2:28:02 GMT -5
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Post by Lucass2T on Mar 29, 2016 2:44:25 GMT -5
Yeah the hpc is a good crank i think. It looks the same as the Malossi RHQ and the hybrid crank I have. The best thing is it's a 12pin! So Id say you made a good choice
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Post by Lucass2T on Mar 29, 2016 2:48:21 GMT -5
Stage 6 Malossi TRD ( i have this one)
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Post by tsimi on Mar 29, 2016 2:50:06 GMT -5
Yep that's the one. A beauty isn't she. They look all alike. Placed order for bearings. NTN 6204C3 2pcs for $5!
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Post by Raizer on Mar 29, 2016 2:51:18 GMT -5
Much better than paying another $25 to have a stage6 sticker put on the bearing packaging lol
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