Author Topic: Yammy TT600  (Read 5608 times)

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Offline Terry in Australia

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Re: Yammy TT600
« Reply #275 on: January 15, 2021, 02:16:13 am »
Wow, that is a beautiful Kit Bill, but hang on to it mate, here's mine:

Yamaha RT3 Friday 15 Jan 2021 1 by Terry Prendergast, on Flickr

Yamaha RT3 Friday 15 Jan 2021 2 by Terry Prendergast, on Flickr

Yamaha RT3 Friday 15 Jan 2021 3 by Terry Prendergast, on Flickr

Your pic reminded me that I bought one of these kits 20(?) years ago, and have only used it once, when degreeing a Megacycle 125/75 cam in my K1 many years later. The seller (in the US) wouldn't ship to Oz, so I had him send it to my sister, who then "forgot" to send it to me until her marriage broke up and she brought it out in her luggage (along with a K0 head) around 2010, after she asked me to collect her from the airport and drive her back to my home town. You can pick your friends, but you can't pick your family......... ;D

Anyhoo, all is well, I cleaned up the carb and put it back on. (maybe it should have been black all along, I had a couple of other old Mikunicarbs in a box that I raided for a mixture screw spring that I managed to lose while cleaning everything, one was factory black and one was bare aluminium)

Yamaha RT3 Friday 15 Jan 2021 by Terry Prendergast, on Flickr

I re-installed the cleaned and lubed decompressor valve (and I'll tell you now, it doeesn't reduce the compression very much even when it is working) pulled the plug out, kicked it over to ensure I have spark, and shoved it back in. I put the choke on, gave it a couple of kicks, and here's what happened:


Anyhoo, it's a runner now, so all I need to do is get a workshop manual to make sure that the adjustments I've made are close to "Ball Park", and to repair all the crap that the "restorer" didn't "quite" get right. I took it for a lap around the block and it's got tons of poke, wouldn't have been hard to hoist the front wheel, but being as it doesn't even have a number plate attached, I wasn't gonna make any more of a spectacle than I needed to.

I shart myself when I was almost home and a guy wearing blue rode towards me on a big modern dirt bike, and I prayed that he wasn't a cop (we have cops that ride around my place on dirt bikes chasing unregistered dirt bike riders, like moi) but he wasn't, and he hoisted his front wheel as he went past. The "bulletproof" transmission feels like it's full of mud so I'll dump the oil out, and hopefully it won't be full of "Cafe Latte", but after water ran out of the magneto cover a couple of days ago, who knows? This is gonna be a "small budget" build, so unlike my K0, I'll only buy parts when I really, really need them. I will do something with the paint though, it's pretty awful. If anyone knows where I can buy/download a workshop manual (preferably not a Clymer or Haynes) let me know? ;D


 
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

Offline dave500

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Re: Yammy TT600
« Reply #276 on: January 15, 2021, 03:58:11 am »
Man ya should see my grin!!dump the transmission oil,run any atf in it full stop Terry,boy what a dangerous thing they were?

Offline dave500

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Re: Yammy TT600
« Reply #277 on: January 15, 2021, 04:04:23 am »
Yamaha more or less pioneered the "torque induction"reed valve on two strokes in the day,the early Honda elsinores lacked that one way flap valve and really suffered a dead flat spot "off the boil"and were no match but had great handling compared,even chainsaws have that reed valve,check if yours has steel or fibre ones Terry,if fibre theyll be you beaut boysen reeds!
bush bashing the DT400,over powered and evil handling,the guy i bought this off,bought it from his brother,who bought it off a mate who used to ride it to university with street rego!
« Last Edit: January 15, 2021, 04:28:04 am by dave500 »

Offline grcamna2

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Re: Yammy TT600
« Reply #278 on: January 15, 2021, 02:17:26 pm »
Terry,You got the Central Tool dial indicator also  :),it'll be nice to 'dial-in' your Yamaha with it.
The RT360 sounds good:now "You're cooking with gas" !
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline Terry in Australia

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Re: Yammy TT600
« Reply #279 on: January 15, 2021, 06:29:52 pm »
Thanks guys, I was really stoked that I got it going, apparently the last two owners hadn't. Mine's got the steel reeds Dave, but I don't mind that, I've seen some fibre ones that were badly chipped over time, and parts for these things are silly prices, so one less thing I'd need to buy.

I'll take your advice to use ATF, I know it works well in car gearboxes, I bought a single rail ford box to go behind a 302 cleveland many years ago, and the wrecker (who reconditioned it) said he'd give it a 12 month warranty if I used ATF rather than gearbox oil, and I had that car for years with no issues from the gearbox.

I better see if I can download a manual so I can check/set the ignition timing, point gap etc. I don't even know if it has the right spark plugs.`I was pleased tat it didn't blow a heap of smoke, but that also leads me to believe that the fuel that was in it wasn't premix, so it would have been disastrous if one of the PO's before me did get it running, not realising that the autolube pump appears to be disconnected.

I'd drained a fair amount of the fuel that was in it out, and added 2 litres of fresh fuel, but enough two stroke oil for 4 litres of fuel, so my "guesstimate" must have been close. Anyway, I was gonna take one of my other bikes for a ride today, but I think I'll do some work on the F2 and RT3 instead, idle hands are the devils tools.......... ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

Offline Terry in Australia

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Re: Yammy TT600
« Reply #280 on: January 15, 2021, 08:28:21 pm »
Well Spotty just dropped by, so I asked him to have a go at kick starting it. Now Spotty must be close to 7 feet tall and 300 pounds, but he struggled with it, and when it kicked back, he rightly gave it the arse. We both agreed that the ignition timing is too far advanced, so I think my next task will be to download a manual (I'd much prefer a paper one, but right now I'll take what I can get) and see what I need to do to set the timing.

I've just been testing my 84 litres of home made ginger beer, and as a result I thought it a great idea to try starting it myself, but broke my foot when it kicked back, so definitely need to do some adjustments before I go any further. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

Offline grcamna2

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Re: Yammy TT600
« Reply #281 on: January 15, 2021, 09:08:07 pm »
Well Spotty just dropped by, so I asked him to have a go at kick starting it. Now Spotty must be close to 7 feet tall and 300 pounds, but he struggled with it, and when it kicked back, he rightly gave it the arse. We both agreed that the ignition timing is too far advanced, so I think my next task will be to download a manual (I'd much prefer a paper one, but right now I'll take what I can get) and see what I need to do to set the timing.

I've just been testing my 84 litres of home made ginger beer, and as a result I thought it a great idea to try starting it myself, but broke my foot when it kicked back, so definitely need to do some adjustments before I go any further. ;D

Terry,sore foot or broken ?
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline Terry in Australia

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Re: Yammy TT600
« Reply #282 on: January 15, 2021, 10:54:59 pm »
Just badly bruised arch Bill, but hurts like hell. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

Online ekpent

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Re: Yammy TT600
« Reply #283 on: January 16, 2021, 06:06:08 am »
Just badly bruised arch Bill, but hurts like hell. ;D
  Sean was down at my shop one day and a friend and I were trying to start his Kaw 900 Z1A that has a high compression big bore kit. He stores it at my place. The battery was low and puked out quickly so being a good friend I tried kicking it from the wrong (left side) with my right foot.You can guess the rest. A big time kick back when it fired a little and I could feel my boot quickly getting pressure with a swelling foot. I've got some nasty pics around and hobbled for a very long time. Think something got broke inside there.  ;D  Those kick starters can really bite back !!
« Last Edit: January 16, 2021, 06:08:02 am by ekpent »

Offline seanbarney41

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Re: Yammy TT600
« Reply #284 on: January 16, 2021, 06:12:11 am »
Yeah, earlier this fall,  i must have bruised something in my foot starting my crf450r.  Still bothers me a little after a long day of work, on my feet.  Kick start dirt bikes are #$%*es!
If it works good, it looks good...

Offline Stev-o

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Re: Yammy TT600
« Reply #285 on: January 16, 2021, 11:23:50 am »
  Kick start bikes are #$%*es!

They are!   That is the one thing I dont like about my H1 & H2.
'74 "Big Bang" Honda 750K [836].....'71 Honda 750K project.....'76 Honda 550F.....K3 Park Racer.....K5 Fiddy Dolla Special!......and a Bomber!............plus plus plus.........

Offline grcamna2

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Re: Yammy TT600
« Reply #286 on: January 16, 2021, 12:25:46 pm »
it was already chipped when i got it.

Dave,can you blow the rear brakes out with compressed air with that 'chip' on the bottom of the wheel,sort of like an extra port to release trapped brake dust ? I imagine you get some squeal from it
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline dave500

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Re: Yammy TT600
« Reply #287 on: January 16, 2021, 01:56:25 pm »
good idea to use it as a cleaning hole!!