Author Topic: 350 ypvs in a 2MA frame  (Read 695 times)

jolly748

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350 ypvs in a 2MA frame
« on: October 27, 2018, 05:18:42 PM »
So Guys, I've got a tuned ypvs motor to drop in, what mods do i need to do, and what do i need to be careful of? Do the rear mounts line up with the valve motor, i know the cradle needs working on? Many Thanks, Andy.

evan_calgary

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Re: 350 ypvs in a 2MA frame
« Reply #1 on: October 27, 2018, 05:50:50 PM »
If you check the RZ350 forum there is someone that has done this and you could likely ask some questions.  Sprocket alignment is quite important.

Toop

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Re: 350 ypvs in a 2MA frame
« Reply #2 on: October 27, 2018, 06:42:53 PM »
... and


as well as the location of the center of gravity.

For the sproket of exit of box, I will not say alignment, its location conditions the work of all the back part (the strength of the chain,% squat,% anti-squat, neutral ...)

jolly748

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Re: 350 ypvs in a 2MA frame
« Reply #3 on: October 27, 2018, 07:07:30 PM »
Thanks gents, I am also fitting a single sided swinger and wheel off a VFR400, this is probably beyond my capabilities, so i think i'll take it all to Nigel at NK Racing to sort the geometry and engine positioning out. Andy.

chubba

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Re: 350 ypvs in a 2MA frame
« Reply #4 on: October 27, 2018, 07:36:36 PM »
Have a look on 2 Moto website they did a 3ma frame with ypvs motor and single sided swingarm ,   not the same frame but might help

jolly748

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Re: 350 ypvs in a 2MA frame
« Reply #5 on: October 27, 2018, 08:41:57 PM »
Hi Chubba, Are 2moto still trading? They are close to me, distance wise. Cheers, Andy.

chubba

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Re: 350 ypvs in a 2MA frame
« Reply #6 on: October 27, 2018, 09:15:57 PM »
As far as I know they are, there based in York I believe.

chubba

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Re: 350 ypvs in a 2MA frame
« Reply #7 on: October 27, 2018, 09:19:22 PM »
Just looked and there FB page is still current

jolly748

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Re: 350 ypvs in a 2MA frame
« Reply #8 on: October 28, 2018, 11:35:48 AM »
Cheers Chubba, i'll take a look. Andy.

Jim Lyon

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Re: 350 ypvs in a 2MA frame
« Reply #9 on: May 18, 2019, 02:43:58 AM »
Thanks gents, I am also fitting a single sided swinger and wheel off a VFR400, this is probably beyond my capabilities, so i think i'll take it all to Nigel at NK Racing to sort the geometry and engine positioning out. Andy.

JL - If you do go to Nigel let us know how it goes? Personally I think 350 YPVS engines are a bit heavy. But if you changed from a mechanically driven rev counter to an electrical one then the gearbox for the mechanically driven rev counter ( which is in the rear of the top crankcase ) can be dumped saving a few unnecessary pounds. :) Just remember to block of the mechanical drive aperture.
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4l04ever

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Re: 350 ypvs in a 2MA frame
« Reply #10 on: May 19, 2019, 02:58:32 PM »
You can get the back of the engine machined off, which loses the kick start and the rev counter drive, but moves the engine back if needed to get the front sprocket where you want it.  I think 2moto or MBD can get this done.
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