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Just getting started on a twopher

  • Schu
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Just getting started on a twopher was created by Schu

I picked up two and a half JTs (72?) with the intention of making one nice one over the winter months. The red one has spark but won't start. The white spray bomb special runs like a champ. Well this afternoon I got the red one started!! They are both numbers matching and I've decided to do a twopher. One in red/white and the other yellow/black.
I don't restore. I refurbish. I have 8 running, refurbished enduros and have found it to be a great stress reliever. I will definitely need to tap your brains when I go thru the engines. Rotary vales are new to me. Can't wait to get these two on the lift and get started.
Schu

CT175B, CT175C, JT1' JT2' DT360A, GT80B, DT100B, DT125B,
DT175B, DT175C, DT250B, DT400B, Z50, SCR950

Someday, you'll own some Yamahas
The following user(s) Liked this Post: mdscott, Wheel mad, 1972JT1
28 Oct 2018 16:52 #1

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Replied by shyted on topic Just getting started on a twopher

Nice wee project to pass away some head scratching hours.
Whats that faint smell coming from the pictures? Is it "It was a bargain" smell?
See the rotaries, well i don't know about Yamahas but certainly on Rotax twin racing engine ,are a piece of cake to work on.
Bonus is they're running. Will they rev?
If so then the fibre plates that attach to the rotor are still in one piece, usually they drop to bits when left covered in fuel for years.
Great to see these things,nice buy.
Regards Ted.
29 Oct 2018 01:30 #2

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Replied by Schu on topic Just getting started on a twopher

Here are some photos of my progress so far. Not the caliber of you perfectionists, but I have fun doing it my way.
Schu

CT175B, CT175C, JT1' JT2' DT360A, GT80B, DT100B, DT125B,
DT175B, DT175C, DT250B, DT400B, Z50, SCR950

Someday, you'll own some Yamahas
The following user(s) Liked this Post: Snglsmkr
09 Mar 2019 16:37 #3

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Replied by Schu on topic Just getting started on a twopher

Schu

CT175B, CT175C, JT1' JT2' DT360A, GT80B, DT100B, DT125B,
DT175B, DT175C, DT250B, DT400B, Z50, SCR950

Someday, you'll own some Yamahas
The following user(s) Liked this Post: Mini Enduro Man, Rick C., JayB, KennyV, Dfeustel, Tbergin
09 Mar 2019 16:39 #4

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Replied by KennyV on topic Just getting started on a twopher

Wow, two at a time! I have trouble with just one. Everything looks great.
71 Z50 Minitrail
72 RT2
74 250A
20 CB500X Halfrica Twin
Last edit: 09 Mar 2019 17:07 by KennyV.
09 Mar 2019 17:06 #5

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Replied by Steve F on topic Just getting started on a twopher

Nice projects !! Look pretty good at this stage !!!:OnFire
1974 DT250A
1974 DT250A
1974 GT80A
1977 IT175D "Alex'
1978 IT175E "Paul"
"And there ya have it"
09 Mar 2019 17:43 #6

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Replied by Mothersbaugh on topic Just getting started on a twopher

I don't remember anyone posting the proper perfectionists' way to do a rebuild. :Coffee
I often am working on two or three at a time, mostly because there is only so much I can do when it's too cold in my unheated garage to work, and I'm inside in the family room with a false top if 1/4" plywood on the mission style coffee table...
09 Mar 2019 19:31 #7

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Replied by Schu on topic Just getting started on a twopher

Mothersbaugh wrote: I don't remember anyone posting the proper perfectionists' way to do a rebuild. :Coffee
I often am working on two or three at a time, mostly because there is only so much I can do when it's too cold in my unheated garage to work, and I'm inside in the family room with a false top if 1/4" plywood on the mission style coffee table...


I didn't mean for my "perfectionist" comment to sound snippy. It's just that most of the work I see on this forum is simply stunning, to the point where I don't think I would ride my bikes if they turned out that perfect.

If I didn't have my heated garage, and my wife didn't have her fancy sewing room, I'm not sure which one of us would survive to tell about it.
Schu

CT175B, CT175C, JT1' JT2' DT360A, GT80B, DT100B, DT125B,
DT175B, DT175C, DT250B, DT400B, Z50, SCR950

Someday, you'll own some Yamahas
10 Mar 2019 07:40 #8

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Replied by Mothersbaugh on topic Just getting started on a twopher

Sorry, did not mean to imply snippiness; didn't think your question/comment was snippy at all. I was "just sayin'" that everyone does his/her own thing, here, and for a variety of reasons, not the least of which is weather, I often find myself working on several at once as well. I was rebuilding 3 carbs the other day, side by side, on said coffee table.
Back to work, now. Might get up into the thirties in the garage, today!
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Last edit: 10 Mar 2019 08:02 by Mothersbaugh.
10 Mar 2019 08:01 #9

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Replied by RT325 on topic Just getting started on a twopher

Wow, nice work for sure. I did two at a time back in about 1974--ish with couple of wrecks for the kids. My resto's didn't look that good, but the oven stunk/stank for a long time after baking everything that would fit in there, engine cases, hubs, you name it. Not sure baking helped with rattle can spray paint but i convinced 'she who must be obeyed' that it was a good idea lol. Shortened the shocks & forks for the younger one & likely put a washer in the exhaust header to tame it till he got the hang of things. Man i loved those bikes.
11 Mar 2019 02:43 #10

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