Author Topic: WANTED - Yam DT2/3, RT2/3, RH crankcase.  (Read 584 times)

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Offline John Orchard

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WANTED - Yam DT2/3, RT2/3, RH crankcase.
« on: April 04, 2019, 10:00:51 PM »
l need a right side crank case, apparently DT2 & 3 and RT2 & 3 are the same, not sure about DT1 & RT1's as they have a different shift drum & forks ?

Will take a pair if not separating.
Johnny O - Tahition_Red factory rider.

Offline sleepy

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Re: WANTED - Yam DT2/3, RT2/3, RH crankcase.
« Reply #1 on: April 05, 2019, 05:17:47 PM »
The RT ones have a different stud pattern for the barrel. Other than that the same.
It could be possible to repair if yours is broken.

Offline Iain Cameron

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Re: WANTED - Yam DT2/3, RT2/3, RH crankcase.
« Reply #2 on: April 05, 2019, 06:08:54 PM »
Im bringing 2 or 3 to Broadford John . the DT and RT are not the same .
Yamaha tragic ; dt1, rt1, dt2, rt2, dt2mx , rt2mx , mx250, mx360,sc500, 74dt125, yzx125, yzc250, yzc400, yzd250, yzd400, yzh250, yzh80 , dt100 , xr75 ko xr80 03 , it175 82 . Not a member of any club

Offline John Orchard

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Re: WANTED - Yam DT2/3, RT2/3, RH crankcase.
« Reply #3 on: April 05, 2019, 08:43:59 PM »
Im bringing 2 or 3 to Broadford John . the DT and RT are not the same .


Sweet !  :-D
Johnny O - Tahition_Red factory rider.

Offline OverTheHill

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Re: WANTED - Yam DT2/3, RT2/3, RH crankcase.
« Reply #4 on: April 05, 2019, 11:17:33 PM »
Sounds ominous John [if that's the word]. What happened?. As stated, the 360 has a different stud pattern.

Offline John Orchard

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Re: WANTED - Yam DT2/3, RT2/3, RH crankcase.
« Reply #5 on: April 06, 2019, 09:57:34 AM »
Sounds ominous John [if that's the word]. What happened?.


l rebuilt the engine when l first acquired the bike, l noticed a part of the crankcase had been broken away, there is a flange of casing that holds the right side bearing on the mainshaft from sliding away from the clutch. l figured that the step on the shaft would stop the bearing moving on the shaft, and the left end of the mainshaft would just push against the left casing, stopping movement in that direction.

With the bike idling and a little pressure on the clutch lever, you can feel the lever pulsing. l gather that with a helical primary-drive and slight mainshaft end-float, l am  feeling the movement through the clutch lever.

l imagine it is only the .5mm that l set the shaft end-float to, but my concern is what effect it may have on the shift fork on that shaft.

l am still going to test it this Sunday, the bikes first outing, l'm sure a few issues will arise :-)
Johnny O - Tahition_Red factory rider.

Offline sleepy

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Re: WANTED - Yam DT2/3, RT2/3, RH crankcase.
« Reply #6 on: April 06, 2019, 10:20:54 AM »
That's a rather important piece of casting but it is not loaded under power due to the helical gear. Wouldn't be difficult to weld and re-machine, I've done quite a few like that on various makes and models but a new case may well be cheaper.

Offline John Orchard

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Re: WANTED - Yam DT2/3, RT2/3, RH crankcase.
« Reply #7 on: April 06, 2019, 06:45:45 PM »
That's a rather important piece of casting but it is not loaded under power due to the helical gear. Wouldn't be difficult to weld and re-machine, I've done quite a few like that on various makes and models but a new case may well be cheaper.


Yep you're correct about "load direction under load", l had to look at Partzilla :-)
Johnny O - Tahition_Red factory rider.

Offline Iain Cameron

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Re: WANTED - Yam DT2/3, RT2/3, RH crankcase.
« Reply #8 on: April 07, 2019, 02:33:22 AM »
So are we after a left or right side case 250 or 360 . Ive got NOS 250 clutch side .
Yamaha tragic ; dt1, rt1, dt2, rt2, dt2mx , rt2mx , mx250, mx360,sc500, 74dt125, yzx125, yzc250, yzc400, yzd250, yzd400, yzh250, yzh80 , dt100 , xr75 ko xr80 03 , it175 82 . Not a member of any club

Offline John Orchard

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Re: WANTED - Yam DT2/3, RT2/3, RH crankcase.
« Reply #9 on: April 07, 2019, 06:26:09 AM »
So are we after a left or right side case 250 or 360 . Ive got NOS 250 clutch side .


250 right side but l don't think l want to pay for NOS ;-) lf used is good l'll take that :-)  Also on list.....

Exhaust port spigot.
DT/RT fuel tank.
Engine mount bolts (4).
Pair of fuel-tank rubber buttons.
Oldschool (DT) style chrome handlebars.
Brake & clutch levers NON dogleg, original look.
Front wheel hub.
Rear wheel hub.
Front sprocket cover with wrecked clutch-push worm (read-cheap) :-)
Right side DT2 crankcase.

Thanks :-)

« Last Edit: April 07, 2019, 06:29:04 AM by John Orchard »
Johnny O - Tahition_Red factory rider.

Offline Iain Cameron

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Re: WANTED - Yam DT2/3, RT2/3, RH crankcase.
« Reply #10 on: April 08, 2019, 08:18:19 PM »
Ok tank yes , exhaust spigot yes , eng mount bolts yes , rubber tank stays yes , wheels rear with tyre as well yes , front ok full width hub or conical ? . cover front sprocket yes . Bars no . clutch and brake levers I will have to look . cases second hand both 250 and 360 .
 DT2mx right eng case .
 

right every thing except the bars .
  Done packed on its way to broadford
Yamaha tragic ; dt1, rt1, dt2, rt2, dt2mx , rt2mx , mx250, mx360,sc500, 74dt125, yzx125, yzc250, yzc400, yzd250, yzd400, yzh250, yzh80 , dt100 , xr75 ko xr80 03 , it175 82 . Not a member of any club