+10mm crank data

[kenny]

Hi all does anyone know the web diameter of the +10 crank please??

[RZtuner]

Yer daft apath, y'om saft yo am!

[TDR_50]

96mm same as OEM but there are 2 larger diameters available for when you go to a larger lower connecting pin for longer rods and life.
here is a link to crank works and all the different ones available. http://crankworks.com/index.php/atv/atv ... atv-cranks

[RZtuner]

Fri Apr 01, 2022 7:18 am

Hi all does anyone know the web diameter of the +10 crank please??

Note the date!!!!

[MK]

So it's not allowed to ask sensible questions on April first, but it's allowed to do drunk posts like your reply?

FYI: Kenny is the guy behind TSA pipes and he's not here to pull anybodys legs.

[RZtuner]

Well for starters I don't drink alcohol period. ....so my post is NOT a drunk post.

Forgive me for thinking this was an April 1st joke because I thought it was.

The crank webs on a standard 10mm are the same as a stock crank webs, it's the big end throw that is larger and requires trenching the cases just to clear the rod. When I read this post and saw the date... I immediately got the distinct impression impression Kenny was taking the piss and posting a trick question to see if anyone would take the bait, but apparently on this site humor is NOT allowed!!!

Yes I do know who Kenny is, he is a fellow "Black Country" bloke like me, and for your information a "daft apath" is a term of endearment in the black country dialect. Kenny would understand that, and understand my post was said in a light hearted manner, but you obviously don't!

Martin, I'd suggest you take a chill pill! You need to lighten up man!

[kenny]

Hi all well I didnt expect this over my little Q but hey. I didnt even think about the date when I posted it lol. The crank webs come in many Diameters when they are stroked but I didnt know the +10 was on std sized webs.
OK Q #2 what is the circle diameter of the widest part now assuming its the outside edge of the Bigend of the rod. ie how much do I need to trench?

[MK]

Well, you have to excuse that to me (as a non native speaker) that appeared somewhat gibberish and the common internet slang for that is "drunk posts".
But it wasn't meant as "you're a soak" but more like "this doesn't make sense".

Now I learned that this is the usual greeting of UK aborigines in remote rural areas of the island

[RZtuner]

Kenny, personally I wouldn't go with 10mm as the required trenching makes the cases pretty thin. I've built a 7mm in the past and it needed about a 1mm trench just slightly wider than the width of the big end.

[kenny]

I plan to weld the crankcases to make them thicker for trenching. Im looking to make a square engine 64 x 64 about 410cc ish. Should be very torquey and fun to ride as it keeps the std YPVS.

[RZtuner]

I understand the attraction of building a square 64 x64, but I still think a 61 x 64 is a better option as it doesn't sacrifice the integrity of the crankcases. Do you think there will be that much of a difference in performance?

[Smoker]

Has anyone ever seen a documented failure, or any problem, related to +7 or +10 trenching of the RZ cases?

I searched and wasn't able to find anything.

I could ask Roger. I'm guessing he's built more +7 and +10 RZ engines than anyone on the planet. Since it's his business, his response might be biased.

[RZtuner]

Look at these pics. Banshee cases seem to be meatier and thicker than RZ and will take a 10mm but 7mm is the limit for RZ without welding and epoxy filling.
https://rdlccrazy.proboards.com/thread/ ... -cases-pic

[Questo vecchio rz]

Should be interesting w a YPVS system, can't say I've ever views one. As it's all been about Cheetah or Serval heads

You can source new Banshee cases for about $6-$700.00.

A Crankworks balanced billet 10mm crank for about $1500.00

With ported 10 mm Servals/Cheetahs easily putting out 80-100 h.p.
Very curious as to how a ported YPVS
setup would perform, especially with a tuned set of pipes.

By all means, keep up with updates...