straight cut drive gears

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smurph
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#46 Post by smurph » Wed Dec 03, 2008 5:02 pm

I don't know of any straight cut oil pump gears. These gear sets were for banshees and race bikes where the oil pump would not be required or wanted. However, that doesn't stop you from having one made. Since the drive gear is bigger, then that would make the straight cut oil pump gear smaller. this would cause more oil to pump per rev of the engine. Some readjustment would be required.

Steve
Fuel Injected RZ350

FJ55
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#47 Post by FJ55 » Wed Dec 03, 2008 7:43 pm

Hellmanns,
What's the tooth count on the gear set, drive and driven?

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#48 Post by hellmanns » Fri Dec 05, 2008 5:16 pm

smurph wrote:I don't know of any straight cut oil pump gears. These gear sets were for banshees and race bikes where the oil pump would not be required or wanted. However, that doesn't stop you from having one made. Since the drive gear is bigger, then that would make the straight cut oil pump gear smaller. this would cause more oil to pump per rev of the engine. Some readjustment would be required.

Steve

those gears came from a TZ...


FJ, tomorrow I'll count...
but it gave me 2,538
I'll check again if the driven (basket) is the same size as stock.



RE-CHECKED

Edit:

DAAAAAAAAUUUUUUUUUUMN, I'M SO HAPPY RIGHT NOW!
The drive is 26... the driven is 72...
72/26 = 2,7692307692307692307692307692308
then 6 gear ratio is 0.889, my final chain ratio is 2.294117 with 190/55 ZR17 at 10.000rpm hummmmmm

213.9kph with staright tooth powah! :smt003
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"...It's just like traveling on a plane, but, without that horrible meal... and with the window opened..."
(RD350 87')

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pics updated

#49 Post by hellmanns » Tue Dec 09, 2008 5:06 pm

Image

Image



the little one that I had on my "garbage"....
Image
Image
"...It's just like traveling on a plane, but, without that horrible meal... and with the window opened..."
(RD350 87')

nath
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#50 Post by nath » Thu Dec 11, 2008 10:39 am

hellmanns, are you saying these came from a TZ and will fit the RZ basket or some modification is required ?

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#51 Post by FJ55 » Thu Dec 11, 2008 11:06 am

I'm also curious as to what TZ they came out of. I done minimal research, but have been unable to find any TZ reference to that ratio primary.

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#52 Post by hellmanns » Sun Jan 18, 2009 6:24 pm

FJ55 wrote:I'm also curious as to what TZ they came out of. I done minimal research, but have been unable to find any TZ reference to that ratio primary.
We had a racing class (RD cup between 86-89 I guess) here on Brazil that were only RDs racing, and no "engine" mods was allowed...but this was placed inside the engine and if makes more power and can't be seen, it's great... they're used to change the 1YH stupid with 2. squish for the 31k head too...


nath wrote:hellmanns, are you saying these came from a TZ and will fit the RZ basket or some modification is required ?
Nath, until now it's straight plug 'n play :smt006 I'll post some pics from the engine buildup...
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"...It's just like traveling on a plane, but, without that horrible meal... and with the window opened..."
(RD350 87')

geosot
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#53 Post by geosot » Mon Jan 19, 2009 6:12 am

All TZ I know have dry clutches. This one is wet clutch. From the morphology (layout) of the TZ350 engine there is no oil pump, but a water pump close to the oil pump position.

I think that these gears are specialy made for RZ350 to be hidden under the OEM clutch cover.

I said hidden because the class was for non modified RZ350 ;-)

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#54 Post by hellmanns » Mon Jan 19, 2009 5:08 pm

geosot wrote:All TZ I know have dry clutches. This one is wet clutch. From the morphology (layout) of the TZ350 engine there is no oil pump, but a water pump close to the oil pump position.

I think that these gears are specialy made for RZ350 to be hidden under the OEM clutch cover.

I said hidden because the class was for non modified RZ350 ;-)

Geosot,


the TZ primary it's the little driver gear on the same pic, the guy who gave me this gear kit lost the driven part... :(
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"...It's just like traveling on a plane, but, without that horrible meal... and with the window opened..."
(RD350 87')

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Re:

#55 Post by geosot » Sat Feb 09, 2013 1:33 pm

smurph wrote:I don't know of any straight cut oil pump gears. These gear sets were for banshees and race bikes where the oil pump would not be required or wanted. However, that doesn't stop you from having one made. Since the drive gear is bigger, then that would make the straight cut oil pump gear smaller. this would cause more oil to pump per rev of the engine. Some readjustment would be required.

Steve
I put in ebay a couple of straight cut primaries that run on roller bearings and with oil pump gear.

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Re: straight cut drive gears

#56 Post by joel74 » Wed May 29, 2013 10:52 pm

you can buy it:
http://www.ebay.com/itm/251269901845?it ... m=&vxp=mtr" onclick="window.open(this.href);return false;
e:
http://www.ebay.com/itm/RZ350-RD350YPVS ... 3a80067bd3" onclick="window.open(this.href);return false;
RDR 350/93 modified(a lot) to +4 crank, 68mm piston, yz125 reed , TZ 96 seat with modified tank/frame, RGV front fairing/light, gixxer brakes, TM34 PJ, 17 weels, lightened flyweel, koso RX2n tachometer, pod air filters, 600 f4 rear shock
Yamaha XT 660

Ripp
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Re: straight cut drive gears

#57 Post by Ripp » Thu May 30, 2013 3:05 pm

joel74 wrote:you can buy it:
http://www.ebay.com/itm/251269901845?it ... m=&vxp=mtr" onclick="window.open(this.href);return false;
e:
http://www.ebay.com/itm/RZ350-RD350YPVS ... 3a80067bd3" onclick="window.open(this.href);return false;

Bem vindo, Joel, um abraço.

Welcome, Joel, a hug for you.

joel74
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Re: straight cut drive gears

#58 Post by joel74 » Fri May 31, 2013 2:39 am

Ripp wrote:
joel74 wrote:you can buy it:
http://www.ebay.com/itm/251269901845?it ... m=&vxp=mtr" onclick="window.open(this.href);return false;
e:
http://www.ebay.com/itm/RZ350-RD350YPVS ... 3a80067bd3" onclick="window.open(this.href);return false;

Bem vindo, Joel, um abraço.

Welcome, Joel, a hug for you.
thanks man.
RDR 350/93 modified(a lot) to +4 crank, 68mm piston, yz125 reed , TZ 96 seat with modified tank/frame, RGV front fairing/light, gixxer brakes, TM34 PJ, 17 weels, lightened flyweel, koso RX2n tachometer, pod air filters, 600 f4 rear shock
Yamaha XT 660

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