fj1200 turbo "thug"

[backstreetheros]

quick few pictures here. not really made much progress as waiting for my aluminum oil cap to have a pipe welded to it! wish the engineers would hurry!
this is a quick snapshot of the gsxr 750 im building alongside the fjt.


much prettier than the fjt too!!

i got my chain from my local bike shop with a shed load of other bits i've been buying!
luckily the chain came in a 25ft roll as i needed a much bigger length than standard...
the guy welding my stainless exhaust told me he needs the chain before he can do the exhaust to make sure it all misses.
the leftovers will make a perfect chain for my fjt! nice job!! cheap chains all round!
i'll try to stop posting pictures of this bike as im sure no-one cares as it doesnt have any fj bits 



i'll do another progress report on the yamaha when i get the oil cap back as thats holding me up!

[dixiethedog]

Looking good. I had to slice my leccy box down,as the chain was hitting it. So check before it goes for paint etc.
Ive lost all interest in mine at the moment,but its nice to see somebody else enjoying a HUC.
Im going back to my roots,oldskool gsx1260efe (gs1150) and Ive plans for one of my FJ12's.

[racerman_27410]

I'm not sure i would be using cheap chain in this application..... a stock FJ is capable of stretching a chain pretty quickly.

Now add in the turbo.......

the though of that chain breaking and coming back on my leg would be enough for me to spring for some EK ZZZ chain.


Last time i experienced pain it was very real!



KOokaloo!

Frank

[backstreetheros]

my electrics box has a nice notch already cut out of it, thanks to the previous owner!
just finishing off the frame and doing a full build before paint so nothing is missed.
i'm back onto making up oil lines again which if im honest bores the shit out of me after the fjt ones!
this HUC isnt too far off. had to have rear wheel spacers machined today to take up the slack in the back wheel,
chain is on now too. battery box and other wiring related crap on their way.
luckily i'm doing some work for a fabricator in his house so he's doing the chopper as a deal. no cash to change hands!
the tax man can shove that money up his arse!!  

looking forward to seeing this one completed.
its booked in for paint at the end of december so rushing the fabricator to finish the frame,
full pearl/candy white on this one, i also bought a CRAFT RX1 Cobra helmet which will go in to get sprayed the same colour too!
what side stands do people use on these HUC's??? i'm really struggling to find something that'll work and can't be arsed to make my own.

with regards to the chain
the guy who sold me the chain said it would stretch a bit but shouldnt snap. surely it has to be BS rated or DOT or whatever its called?
i mean companys can't sell something thats that dangerous can they?
and a turbo fj wouldnt add anymore force to a chain that a normal fj could cause... surely the puny back wheel would break traction at the same time?
i will put a chain guard on it to save me a bit.

nice to hear feedback on the bike seeing as i've not seen anything like this before or built a turbo chop before!

[racerman_27410]

there are many different grades of drive chain.... all with different ratings on stretch/ wear and the amount of power they are capable of handling.

AFAIK the EK ZZZ chain is some of the strongest available.

[backstreetheros]

even the zzz chain isnt up to scratch!
Specifications

   Tensile Strength   9400 lbs
   Wear Life   1700
   Max CC's   1000
   Max HP   100
   Weight per 100 Links   3.97 lbs
taken from their website for their EXTREME sportsbike chain!

better off saving my money and putting it into a hefty chain guard i think! 

[Havoc]

better off saving my money and putting it into a hefty chain guard

When the 630 chain on my GS1000 went it smashed the crankcases to pieces wrapping itself round the drive sproket. I had one go on my 350LC and it locked up the back wheel sending me into a pond.    . Least bad was when my Bonnie chain snapped on the start line at Avon Park Raceway spitting it backwards and wrapping it's self round the ankles of one of the watching MC guys, fortunately it had lost most of it's momentum and he wasn't annoyed, much   

They can let go in an infinit number of ways

[backstreetheros]

doesnt sound very nice! obviously this can happen to any chain at any time, just a case of luck and hoping you've got enough things in your way before it hits you i suppose!
shame the fj isnt shaft drive! 

[Havoc]

shame the fj isnt shaft drive!

Na dude, shafts sap too much power.

2 of the 3 instances above were poor maintainence and a worn chain.

The GS1000 on the back of a recovery trunk in the middle of France was actually a story in how strong chains are. Long story short. Bought bike 3 days before a tour of Europe with motor in pieces.

Got bike together 30minutes before we had to set off. After 80 miles passing Cambridge it became apparent there was a massive tight spot in the chain. Tightened the chain on the tight spot and kept well oiled. We was in a hurry and the bald tyre was more of a priority, new tyre outside LeMans.

Eventually spotted for a few days in Barcelona gave me time to source a chain.

Counted links an bought good chain. Back at the site I realised I'd bought 530 section chain instead of a 630 , doh. Did another 2000 miles just adjusting the chain on the tight spot every 100 miles across the south of France and back up through Italy and Switzland.


Eventually gave up the ghost about 200 miles short of Calais, that morning we'd decided Suzanne would be better off on the back of my mate as the chain was stoopid loose now, we were completely skint. Went with a bang pulling off a roundabout and apart from 4 liters of hot engine oil over the rear tyre, it was quite uneventful.

Sorry, mild hyjack, just got into the memories

[ribbert]

I like the bush "jack"

[backstreetheros]

haha bush jack is awesome.
seems like a good adventure!
i very much doubt if the turbo bike will go as many miles as you have, id be happy riding it once a month!
the gsxr bike i doubt will get much use either, thats much more likely to end up as an ornament in my living room!
we will see when i get them both finished!

boost pressure switch from wizards of nos arrived the other day and has been rolling about in my van.
still waiting on this bloody oil cap, which is still on the bench in my fabricators workshop! get on with it!!
i might disconnect his toilet in his house untill he completes the job for me haha.


a big thanks again to randy. (you know why)

[racerman_27410]

even the zzz chain isnt up to scratch!
Specifications

   Tensile Strength   9400 lbs
   Wear Life   1700
   Max CC's   1000
   Max HP   100
   Weight per 100 Links   3.97 lbs
taken from their website for their EXTREME sportsbike chain!

better off saving my money and putting it into a hefty chain guard i think!  

you are looking for trouble if using less than 530 chain..... which is the ZZZ chain i was referring to.


i dont know where you got those HP numbers as they are not on the EK site i'm looking at

http://www.ekchain.jp/product/extreme_sport.html

up to 1400CC recommendation.....11 thousand lb tensile strength..... every single one of the turbo busas at the maxton mile are running this chain.

start looking at specs on other 530 chains.... then come back and show me some better numbers.


i can tell you the 115 lb/ft of torque Brutus is putting on this chain has not stretched it.


But you can do what you want.... its your life (and leg/engine case)

kOokaloo!

[backstreetheros]

got my oil cap back, turns out they didnt bother welding a pipe to it...
they only went and made up a brass hose tail then pressed it into my cap! not even a single tooling mark on the peice, very happy indeed...
so excited in fact i actually gave up work and drove all the way home (with a huge grin on my face) and fitted it to the turbo bike!
i was so caught up in the moment and fighting for daylight hours (04:05pm sun down!) that i forgot to take a picture.
i finished the turbo drain pipe with a nice bend to follow the line of the engine in (you guessed it) copper pipe.
got the oil feed to the turbo connected into the tapping in the block too.
i thought i'd run the bike for a bit to check for oil leaks.
ran for about 20 minutes and seemed to warm up fine, no horrible noises which is good,
i've not yet connected the fuel pump so it won't hold boost pressure yet... this is next on my list.
the bike will rev up and spools quite well, spits foot long flames with the dyna limiter set to 6500 rpm!!
left it running for about 20 minutes then the battery died as i've not yet connected the alternator.


the boost pressure switch i had to specially order from wizards of nos i fitted into the air pipe just before the plenum (next to the dump valve)
luckily back when i was doing the air pipes and found a 42,42,1/2" T in yorkshire brass i decided to use it, which ment i could thread a 1/2" T into this tapping, one side for the dump valve and one side for my pressure switch.

waiting on wiring loom, fuel pipe and electrical bits i've ordered now before i can press on. nice to hear it sit there and run for a while!!

been a bit tied up doing the gsxr chopper to try and get it ready for paint, got the exhausts done, the wheel spacers which seemed a shame to hide away as they were so well machined!! and a load of other crap. working through the problems we all face building bikes.

exhaust is a bit low, might need fettling...







i also bought a CRAFT RX1 Cobra helmet to be sprayed white when the bike gets sprayed. nice job!



i'll try take some more pictures of the fjt when i get it out next.

[I make oil]

Interesting thread and very well documented.   

[dixiethedog]

As a fellow HUC owner (ive 3 of the things!),are you having the bike SVA'd,or are you doing what is commonly known as making a ringer? (Using the reg details of the donor bike). Im going legit with my stuff,as with new MOT rules coming along,the police not being as stupid as some people think etc etc,for me legal is the way forward. I can then sell them,knowing they dont have to have an mot test for 3 years,which a lot of people would think was a good move.
Its not a negative question,so dont take it the wrong way. Your bikes are as cool as a penquins cool bits,and I love them. But depending on how you go,it would be a shame to see you get yourself into any legal problems.
Im watching things with great interest.