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Post by Juan on Nov 27, 2012 22:39:08 GMT
Not to my usual taste by any means but I think it works. Which was more restrained than the Ed Roth homage Vespa that the thread was actually about. The work was really good and as a tribute it worked but by God, it was fucking ugly.
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Post by scottsprint on Nov 28, 2012 17:23:13 GMT
Thats nice!
Keep up the work, looking forward to seeing the progress.
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Post by swallow on Jan 22, 2013 19:30:22 GMT
Done a little work stripping down the donor engine. The piston was seized good and proper, took quite a bit of shifting. Looks like a previous owner had tried derestricting the bike unsuccesfully - factory exhaust has a built in restrictor, this had been removed but the carb was still running factory jetting. Luckily the bore appears pretty unscathed and is still on the standard 56mm. Will be sending it off for a rebore and 1st oversize piston as it has a little pitting from being sat seized and damp so long. DSCF4093 by vespaloco, on Flickr DSCF4092 by vespaloco, on Flickr DSCF4095 by vespaloco, on Flickr This barrel had a fixed powervalve, which in other markets was supplied as a servo actuated powervalve. This can be changed using the existing powervalve and retro fitting the servo and associated parts. Cleaned up the old valve which was blackened and got some parts on the way in the post to allow it to open/close according to revs. DSCF4096 by vespaloco, on Flickr Found a new servo motor on ebay germany. These electrics are really confusing, the cdi has a dozen wires coming out of it - I believe I have got the correct servo (there are two types) that has its own brain and just works off a pickup. DSCF4100 by vespaloco, on Flickr The crank in the donor engine had been sheared off at the flywheel cone thread. Found a new old stock Yamaha part on ebay, which unfortunately cost a bit DSCF4097 by vespaloco, on Flickr From the same seller picked up a relative bargain - Brand new engine cases, left and right, unstamped. Will be getting all new bearings and seals then swapping all internals from the donor engine over. Shall be doing away with the autolube pump and also the tacho drive off the engine, instead using premix and tacho off ht lead. DSCF4098 by vespaloco, on Flickr DSCF4099 by vespaloco, on Flickr On to the Mikuni carb which is more complicated than anything I have encountered to date hoping for some help in identifying the purpose of some of these tubes... I know the big black one with a spring around it is the autolube feed, the other black one is fuel supply. What are the two clear (brown) ones for? What is the nipple protruding out of the bottom for? DSCF4103 by vespaloco, on Flickr On the opposite side, I have worked out that the short black tube is a powerjet supply but what is the other clear tube for? DSCF4104 by vespaloco, on Flickr If anyone has any good knowledge of these carbs and what all the tubes are for I'd be happy to learn...
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Post by eean on Jan 22, 2013 20:17:30 GMT
I think they are just overflow tubes Tom
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Post by ttscshaggy on Jan 22, 2013 20:33:15 GMT
Ive a good condition one of those carbs if your interested for spares ?
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Post by Juan on Jan 22, 2013 20:38:44 GMT
If the piston is cleanable then I'd try getting the bore a light hone / polish first before going for an oversize. Is it a steel or iron liner? Just by the time you go for a rebore, piston kit and replate if it's nicasil then it gets very expensive and perhaps not financially viable.
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Post by swallow on Jan 22, 2013 21:51:58 GMT
Cast iron liner I believe. I'm not too up on the procedures with oversized pistons or different ring sizes. I'll speak with the people I send it to, to see what they suggest. Was just thinking that with a rebore it would definately eliminate any of the pitting but as you say a hone might take that out anyway.
@ Eean - cheers for that @ Shaggy - cheers also, I've yet to pull it apart but will bare it in mind
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Post by swallow on Jan 22, 2013 23:45:47 GMT
If the piston is cleanable then I'd try getting the bore a light hone / polish first before going for an oversize. Is it a steel or iron liner? Just by the time you go for a rebore, piston kit and replate if it's nicasil then it gets very expensive and perhaps not financially viable. just re-read that - piston definitely not resuable after my extraction procedure - it took quite a beating, wouldn't be happy using it again even if it cleaned up.
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Post by swallow on Feb 3, 2013 10:30:49 GMT
Have been spending some time renovating the engine side covers. I did find some new old stock ones on ebay but am trying to minimise the costs of the project, so JB weld the gouges, light sanding and plastikote spray.... From this DSCF3783 by vespaloco, on Flickr to this DSCF4134 by vespaloco, on Flickr Also spent quite some time reading (looking at) the GSF O-lack thread, trying to decide if the bodywork is a suitable candidate. There are some largeish patches of surface rust and I have yet to find what is under the thick layer of radiator paint on the rear end
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Post by Wayne Miller on Feb 3, 2013 12:39:02 GMT
Nice Job, well done that man. Looks good mate
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Post by swallow on Feb 6, 2013 16:34:05 GMT
Exhaust turned up in the post today. I had thought that the original DT125 exhaust could be re-routed around the Peugeot's frame but it follows a very curvy route around the MX style bike and would most probably have turned into a total mess by the time I had chopped it in a dozen places to try and straighten it out So, this is a second hand TZ125R exhaust that has come via ebay Germany. The layout is almost ideal for fitting my chassis. TZ125 runs a similar cylinder to the DT125, differences I can work out being nicasil rather than steel bore and a slightly higher compression. Hopefully this pipe will work out ok.... ;D or will do after some modification. DSCF4175 by vespaloco, on Flickr DSCF4178 by vespaloco, on Flickr
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Post by bikegrim on Feb 6, 2013 17:39:44 GMT
ring ding ding - lovely pipe
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Post by amazombi on Feb 6, 2013 21:35:38 GMT
How much are these, just out of curiosity?
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Post by Juan on Feb 6, 2013 21:49:19 GMT
Jollymoto, that's them that do the Zadra Nautalis / Parmakit Curly. Hopefully that'll be a bit better than them.
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Post by amazombi on Feb 6, 2013 22:06:55 GMT
He both builds and develops pipes, some of the ones he builds he doesn't develop, and some of the ones he develops don't seem to be dear to his heart.
I was just wandering because compared to your average smallframe pipe this here is pretty easy to build, I'd say.
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Post by swallow on Feb 6, 2013 22:15:09 GMT
How much are these, just out of curiosity? Was 150 delivered, in very good almost new condition, save for a couple of very minor scuffs. Hoping it will prove to be usable and not a costly mistake....
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Post by swallow on Oct 7, 2014 9:06:58 GMT
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Post by bikegrim on Oct 8, 2014 8:32:41 GMT
Shame that Tom. Was one I was looking forward to seeing done. I haven't got the room otherwise I would fancy having a go at that. Good luck in the sale. Ask the new owner to update the thread on here...they might.
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Post by swallow on Oct 8, 2014 9:19:50 GMT
Hi Gareth - yes it pains me to part with it. Would have liked to have done it myself and am selling it all on at a loss.
It is a minority interest though, being an unusual scoot and not a straight to original restoration - something a little out of the ordinary.
Hoping someone will have the same dream as I did.....
Tom
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Post by tzsteve on Oct 8, 2014 15:39:14 GMT
if that tzr has the standard yam power valve controler, it is possible, with a bit of soldering and dremelling to make the controler programable, using about 10 mini dip switches. if you cant find the info on the net i think i have a few pages saved from the old tzr250 forum (let me know).
someone on fleabay also does this mod for about £60
re the carbs if you do a search for the tzr250 F111 (F3) kit you could find a manual for downloading. it gives details of the mods you can do to the carbs to make them more adjustable (i do have a copy of that)
a very common mod is to fit dtr 125/250 pistons these are pegged in the center of the ring groove. the ones with the pegs half in the groove are more prone to having the rings jumping over the ring pegs.
that exhaust looks realy nice.
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