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 Post subject: Re: Crankshaft assemblies
PostPosted: Wed Feb 07, 2018 2:52 am 
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Posts: 69
Trix, yes send me a PM, cranks are gonna be 450.00 each and will come with seal kit


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 Post subject: Re: Crankshaft assemblies
PostPosted: Thu Mar 01, 2018 5:35 pm 
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Got a call today cranks are done, finishing up the boxes, so hopefully shipped soon


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 Post subject: Re: Crankshaft assemblies
PostPosted: Wed Mar 14, 2018 12:57 am 
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Cranks are on the water


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 Post subject: Re: Crankshaft assemblies
PostPosted: Wed Mar 14, 2018 2:41 am 
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Vinpg wrote:
Cranks are on the water


Are they coming from Taiwan Gus? Same as the last batch?

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1985 RZ500
1985 RZ500 Project Bike
1986 RG500 ATR
1986 NS400R
1987 TZR250
1988 Honda RC31
2007 DL650 VStrom
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 Post subject: Re: Crankshaft assemblies
PostPosted: Wed Mar 14, 2018 1:22 pm 
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The same company that did it before is doing it this time I would like to thank all my parts are made in Japan but they Outsource just like Americans do, I believe choreo has a massive bearing operation in China, what matter to me was quality and that was it and that's what I found


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 Post subject: Re: Crankshaft assemblies
PostPosted: Wed Mar 14, 2018 3:31 pm 
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Sorry Koyo I'm on the road doing talk-to-text


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 Post subject: Re: Crankshaft assemblies
PostPosted: Wed Mar 14, 2018 3:47 pm 
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I asked Yambits about their crank parts...centre sections, webs, bearings, pins. Their response today was that their centre sections, webs, and pins are from Taiwan. Bearings and labyrinth seal are from Japan. Sounds like you are on that same path, but offering complete assemblies at an attractive cost. If there was another supplier besides Taiwan and you we would have seen it by now.

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1985 RZ500 Project Bike
1986 RG500 ATR
1986 NS400R
1987 TZR250
1988 Honda RC31
2007 DL650 VStrom
2014 Triumph Thruxton Modified


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 Post subject: Re: Crankshaft assemblies
PostPosted: Wed Mar 14, 2018 4:22 pm 
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Look to the Yambits pictures... they sell TZR webs as RD500 (if you get what you see on the picture).
But they also have a wrong picture for the crank bearings (also TZR250 bearings shown on the RD500 picture) => the position of the groove is different.

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 Post subject: Re: Crankshaft assemblies
PostPosted: Wed Mar 14, 2018 4:30 pm 
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Speed Freak wrote:
Look to the Yambits pictures... they sell TZR webs as RD500 (if you get what you see on the picture).
But they also have a wrong picture for the crank bearings (also TZR250 bearings shown on the RD500 picture) => the position of the groove is different.


The photos are generic Michael, meaning the same photos are used for multiple listings. It's common practice among vendors. EBay as well.

_________________
1985 RZ500
1985 RZ500 Project Bike
1986 RG500 ATR
1986 NS400R
1987 TZR250
1988 Honda RC31
2007 DL650 VStrom
2014 Triumph Thruxton Modified


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 Post subject: Re: Crankshaft assemblies
PostPosted: Wed Mar 14, 2018 10:30 pm 
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I think my crank peeps are pretty smart I asked for Koyo bearings and after a week they told me those big bearings on the clutch side are Yamaha's and only Yamaha's...that is why I went with TPI, there are crank companies everywhere, Japan Taiwan China Brazil India everywhere, it's not to hard to find them.


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 Post subject: Re: Crankshaft assemblies
PostPosted: Wed Mar 14, 2018 11:19 pm 
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Vinpg wrote:
I think my crank peeps are pretty smart I asked for Koyo bearings and after a week they told me those big bearings on the clutch side are Yamaha's and only Yamaha's...that is why I went with TPI, there are crank companies everywhere, Japan Taiwan China Brazil India everywhere, it's not to hard to find them.


Maybe so, but they aren't making RZ500 cranks, or TZR250 cranks.

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1985 RZ500
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1986 NS400R
1987 TZR250
1988 Honda RC31
2007 DL650 VStrom
2014 Triumph Thruxton Modified


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 Post subject: Re: Crankshaft assemblies
PostPosted: Thu Mar 15, 2018 12:14 pm 
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And neither does Yamaha


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 Post subject: Re: Crankshaft assemblies
PostPosted: Thu Mar 15, 2018 6:03 pm 
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Vinpg wrote:
I asked for Koyo bearings and after a week they told me those big bearings on the clutch side are Yamaha's and only Yamaha's...


I got them from Koyo (1 week delivery time).
It makes a big difference where you ask - my experience is that most of the companies/dealers are not really interested in such "special" things. At least in Austria...
"Take what we have or f**k off"
They have many reasons why they can`t deliver what you are searching for.

TZR250 bearings were on stock. Seems that they both are nothing really special - but I think too special to fake them.
Ordered also both bearing types from Yamaha to compare them... No difference.

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RD350 YPVS 31K 1985
Honda NS400R NC19
Honda CBR 1000 RR SC57
Yamaha R1 RN04


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 Post subject: Re: Crankshaft assemblies
PostPosted: Thu Mar 15, 2018 6:19 pm 
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silverstrom wrote:
The photos are generic Michael, meaning the same photos are used for multiple listings. It's common practice among vendors. EBay as well.


Hi John,

Did you already see one of the crank webs from Yambits?
If they are not TZR250 webs I would like to buy them and give them to our measurement technican to put it onto the 3D measuring machine.

Also PJME shows a picture of "wrong" crank webs for the 500.
http://www.pjme.co.uk/acatalog/Yamaha_R ... _End_.html

If you look at the backside (other side than the crank pin) there is a machined ring.
In case of a TZR250 crankshaft this ring is smaller than the diameter of the web, RD500 => ring has the same outer diameter as the crank web.

I think the TZR parts will fit and that`s the reason why they sell it like this.
Would be too expensive to manufacture outer webs for the 500 as there are 3 different types, so they only sell the "recycled" center parts.
For me this is simply wrong...

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My bikes:
RD500 YPVS 1GE
RD350 YPVS 31K 1985
Honda NS400R NC19
Honda CBR 1000 RR SC57
Yamaha R1 RN04


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 Post subject: Re: Crankshaft assemblies
PostPosted: Fri Mar 16, 2018 5:11 am 
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Speed Freak wrote:
silverstrom wrote:
The photos are generic Michael, meaning the same photos are used for multiple listings. It's common practice among vendors. EBay as well.


Hi John,

Did you already see one of the crank webs from Yambits?
If they are not TZR250 webs I would like to buy them and give them to our measurement technican to put it onto the 3D measuring machine.

Also PJME shows a picture of "wrong" crank webs for the 500.
http://www.pjme.co.uk/acatalog/Yamaha_R ... _End_.html

If you look at the backside (other side than the crank pin) there is a machined ring.
In case of a TZR250 crankshaft this ring is smaller than the diameter of the web, RD500 => ring has the same outer diameter as the crank web.

I think the TZR parts will fit and that`s the reason why they sell it like this.
Would be too expensive to manufacture outer webs for the 500 as there are 3 different types, so they only sell the "recycled" center parts.
For me this is simply wrong...


Send them an email and ask them about the cranks. They typically reply in 1 day. I see no difference in the center sections of RZ500 and early TZR250 cranks. The part numbers are different by prefix, 47X vs 1KT. I have both Yamaha cranks here and have never really paid much attention to it.

_________________
1985 RZ500
1985 RZ500 Project Bike
1986 RG500 ATR
1986 NS400R
1987 TZR250
1988 Honda RC31
2007 DL650 VStrom
2014 Triumph Thruxton Modified


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