DT125R ARCHIVE

Members Login
Username 
 
Password 
    Remember Me  
DT125R Forum -> Other Bikes -> YZ125 TS50 Hybrid
Post Info TOPIC: YZ125 TS50 Hybrid
Jesse_DT


DTR Senior Member

Status: Offline
Posts: 155
Date:
YZ125 TS50 Hybrid
Permalink  
 

I've got my old 50 sitting in the shed getting dusty so I figured I'd prevent it from rotting into the ground and do something special with it. What could be more special than swapping it's 7bhp(ish) engine with a 33bhp YZ125 lump? biggrin 

I'm building it with the intention of creating something quite like the KTM Free ride, small, light weight and easy to throw around the local greenlanes and possibly a few Enduro events. Hoping the power to weight will be entertaining.  

This was it after a tidy up last year.

DSC00548.jpg

Picked up a 1991 YZ frame and engine for £180, also saw it running before he broke the bike which is reassuring.

Started the strip down yesterday, TS engine out, along with loom, airbox and oil tank. Gonna whack all the old s**t on eBay to scrape together some funds for the ensuing nightmare.

Planning on running it with a daytime MOT only meaning I can scrap all the wiring, headlight, indicators and the rest of the added weight. hoping to get the weight down to between 65kg and 70kg by the time I'm finished with it.

Had a little offer up with the YZ engine earlier, can't wait to get this thing on the dirt haha.

 

DSC01072.jpg

 

I'll be updating this thread as the project progresses.

I'll be interessted to hear what you guys think.  smile



__________________
Calum122


Guru

Status: Offline
Posts: 7569
Date:
Permalink  
 

Wow interesting.

I'm surprised at how much room there is once the engine is in. This actually might be possible....

Keep it up and us updated. Very interested.

__________________

Always Originate, Never Pirate!

The Leviathan Project
FunkeyMunkeyDavid


Guru

Status: Offline
Posts: 802
Date:
Permalink  
 

do like a bonkers engine swap biggrin the engines worth far more than the ts 50 though lol

should be fun hanging on to it....



__________________

money killed everything....
NEV


Guru

Status: Offline
Posts: 2515
Date:
Permalink  
 

Be worth watching this project, you'll need to beef up the braking and possibly the suspension to cope with the power of that YZ engine

__________________

 
MDK


DTR Legend

Status: Offline
Posts: 1690
Date:
Permalink  
 

bloody mental those poor lil drum breaks are gona explode with the strain

__________________

DTR125CO-1.jpg


de restrictions

good clean up of a old batterd  dtr  95

 
Calum122


Guru

Status: Offline
Posts: 7569
Date:
Permalink  
 

Supermatard it. Full disc brakes lol.

__________________

Always Originate, Never Pirate!

The Leviathan Project
Jesse_DT


DTR Senior Member

Status: Offline
Posts: 155
Date:
Permalink  
 

Yeah there's a lot of room in the frame which is helpful. 

I'll definetly be uprating the brakes, leaving the drums on would be suicide haha, I'm looking into fitting usd's so I can get a disc on the front, I might just leave the drum on the rear but haven't decided yet.



__________________
CarlosRexx


Guru

Status: Offline
Posts: 1066
Date:
Permalink  
 

Im sure with some homework you could find a hole rear swingarm and suspension setup to fit, meaning you'll have better stiffer suspension and a decent brake at the rear! Keep us posted dude!

__________________

If you're not fast, you're last

TINNNNGGG TA TA TINGGGG.
Jesse_DT


DTR Senior Member

Status: Offline
Posts: 155
Date:
Permalink  
 

I know a Rieju MRX front end will go through as I've seen it done, it's tricky finding forks that are a similar height to the TS as i want a very low seat height and centre of gravity. Anyone know what the length Pulse Adrenaline forks are?

Still not sure whether to change the rear brake, might leave it but I'm famous for changing my mind so not sure at the moment haha.

This is the bike as it stands today, old engine mounts have been shaved off ready for some new ones, I love the skininess of it lol.

DSC01075.jpg

DSC01076.jpg

DSC01077.jpg

Sorry, I don't know how to rotate the pictures? :S

 



Attachments
__________________
eG x LoGiKzZ


Guru

Status: Offline
Posts: 767
Date:
Permalink  
 

maybe get some forks from a small 85cc mx bike? built to handle jumps and are usd so they look good too

__________________
ToySoldier


DTR Legend

Status: Offline
Posts: 3132
Date:
Permalink  
 

legik has a good point a cr85 rm85 front end would look boss

__________________
Dont Blame The Player Blame The Game
Jesse_DT


DTR Senior Member

Status: Offline
Posts: 155
Date:
Permalink  
 

That's a good shout guys, I'll have a look into it, cheers.

I was also thinking trials bike forks, blokes drop like 10ft on those kinda forks and they're short as.



__________________
Boxing


Guru

Status: Offline
Posts: 651
Date:
Permalink  
 

I'd keep the lights on if I was you.

Green laning in winter, it gets dark at about 5PM, if you're a while away from home, the boys in blue would have reasons to pull you over.

Should have probably done this with a TS 125. If the police see "Yamaha" written on the engine, they'll be asking questions, also as a 50CC it should do no more than 30MPH. Seek registering it as a 124CC before riding it, this way you can't get done for going over 30MPH.

Interesting project, keep us updated.

Also if you want to rotate pictures, open them in paint and then rotate right 90 degrees. Then save and upload to the photo site you use.

__________________

Innit
Jesse_DT


DTR Senior Member

Status: Offline
Posts: 155
Date:
Permalink  
 

Lights and wiring= More weight. I'm trying to keep all un-necessary weight off the bike, i'll just have to plan when i use the bike. I'll have the DT for winter greenlaning and this thing for the summer etc.

hmm, true but swapping the 50cc with a yz lump is a little more interesting than swapping a 125 for a 125 haha. i also had this sitting in the shed and wanted to use it. i'll be registering it as a 125 when it's finished, it'd be stupid not to.



__________________
ShaunyBoy


Guru

Status: Offline
Posts: 544
Date:
Permalink  
 

How's this project coming along?

__________________

null_zpsc2aac655.jpgnull_zpsf20a8225.jpgnull_zps2f7502ea.jpg
Jesse_DT


DTR Senior Member

Status: Offline
Posts: 155
Date:
Permalink  
 

Just planning and gathering parts at the moment mate. It's a college project so I won't be able to start it till around september which is a bummer. Gonna send the engine off for a full rebuild before then. Also got a complete upside down front end including wheel/caliper/disc etc off one of these:

CLIMBER-280_00.jpg

great thing is, the fork length is exactly the same so the geometry of the bike won't be thrown out at all biggrin



Attachments
__________________
Jesse_DT


DTR Senior Member

Status: Offline
Posts: 155
Date:
Permalink  
 

Finally made a start on this last week.

Got the engine in the frame so the sprockets were in line, took some doing but got there in the end.

Made up templates for the new engine mounts out of cardboard, next step is to get them cut out of some 3mm steel sheet i got a hold of. smile

Managed to score a pair of very tidy Aprilia wheels as the one that came with the front end was cracked, rear wheel was a bonus, might do something with it at a later date.

Here's a pic of the engine and exhaust in the frame and one of the new wheels biggrin

Gonna be a bit of a task trying to wedge the rads in somewhere, the bike is so little hahaha

 

image.jpg

 

 

image.jpg 



Attachments
__________________
CarlosRexx


Guru

Status: Offline
Posts: 1066
Date:
Permalink  
 

Nice build man!

__________________

If you're not fast, you're last

TINNNNGGG TA TA TINGGGG.
Jesse_DT


DTR Senior Member

Status: Offline
Posts: 155
Date:
Permalink  
 

Thanks mate, can't wait to have it done, only being able to work on it 3 hours a week is killing me hahaha



__________________
Calum122


Guru

Status: Offline
Posts: 7569
Date:
Permalink  
 

I swear a yz125 would be lighter than a ts50

__________________

Always Originate, Never Pirate!

The Leviathan Project
ToySoldier


DTR Legend

Status: Offline
Posts: 3132
Date:
Permalink  
 

Ts50 weights **** al I used to lift mine over fences by my self

__________________
Dont Blame The Player Blame The Game
Calum122


Guru

Status: Offline
Posts: 7569
Date:
Permalink  
 

Really! Lmao

__________________

Always Originate, Never Pirate!

The Leviathan Project
ToySoldier


DTR Legend

Status: Offline
Posts: 3132
Date:
Permalink  
 

yeah man one hand on the back rack one on the handle bar brace and flick it over haha this ts will be the propper propper beastiest bike.

my pals got a tzr engine in one of them senda 50s that is a animal so light and powerfull

__________________
Dont Blame The Player Blame The Game
Jesse_DT


DTR Senior Member

Status: Offline
Posts: 155
Date:
Permalink  
 

Standard TS weighs under 90kg whereas a yz is over 100kg iirc biggrin

 



__________________
Jesse_DT


DTR Senior Member

Status: Offline
Posts: 155
Date:
Permalink  
 

So it's been a while since I last posted on this...

Time for an update smile

Progress isnt half as fast as I would like because I only get a few hours a week to work on it but I'm getting there slowly...

Engine is nearly in the frame for good. Front mounts are on, rear mounts to be welded in next week and then need to make some spacers to put the front sprocket inline with the rear.

 photo 2.JPGphoto 1.JPGphoto 5.JPGphoto 4.JPG

Once the engine is in I can focus on getting the Aprilia USD front end on, gonna need to machine a stem up and press it into the yokes.

photo 1.1.JPGphoto 2.1.JPG



Attachments
__________________
NEV


Guru

Status: Offline
Posts: 2515
Date:
Permalink  
 

You could do with a mig tack on the inside of those cleats too, Jesse, or when it comes to fully weld them the heat will pull them out of square.



__________________

 
Jesse_DT


DTR Senior Member

Status: Offline
Posts: 155
Date:
Permalink  
 

I have properly welded around each front mount since the photos were taken NEV, i'm taking all neccessary precaustions, trust me haha

The last thing i want is the engine falling out while im riding along haha



__________________
NEV


Guru

Status: Offline
Posts: 2515
Date:
Permalink  
 

Aye true, little prep for the  fillet weld wouldna gone amiss neither.. probably a little ott, but for a lifting lug, I'd deffo do. lol



__________________

 
Jesse_DT


DTR Senior Member

Status: Offline
Posts: 155
Date:
Permalink  
 

Yeah I was going to fillet the edges but got carried away and just went and welded them on haha fingers crossed they should be alright...
I think I'll take my time and do the rest properly haha

__________________
NEV


Guru

Status: Offline
Posts: 2515
Date:
Permalink  
 

Nah it's looking good Jesse, at least I could tell from your pic it was a mig weld and not pigeon ****.

__________________

 
1 2  >  Last»  | Page of 2  sorted by
 
Quick Reply

Please log in to post quick replies.
DT125R Forum -> Other Bikes -> YZ125 TS50 Hybrid
Tweet this page Post to Digg Post to Del.icio.us


Create your own FREE Forum
Report Abuse 		Powered by ActiveBoard