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Old 02-25-2012, 02:18 AM   #1
Hunsta OP
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1976 DT250C Flat Tracker project.

Well its started 15 years ago. I was in a road riding club and one of the members was an old speedway rider. He had a property that had his own flat track on it and we would have BBQ days out there racing old dungers around his track. I myself had an old CB200. Damn we couldnt kill that thing, and I`d always wanted to have a go at flat track racing, but never got around to it.
Anyway a year ago, an ADV member ask me to come along to a track day at a local flat track. Man I wanted to get out there, but the young guys on modern bike were just scary to watch. Then the classic class came out and I was sold. Somewhat alittle more sedate, with pre-1977 bikes like TS250`s, Xt500, and a XR750 Harley Davidson to name a few. However its taken me a year to finally get around to getting a bike.
Another ADV member was moving and he had an excess of motorcycle in his shed(oh boy how terrible ) and ask if there were any takers. I immediately put my hand up for the DT250 he had. After some failed attempts to get the bike the 1000klm, he partly disassembled the bike and brought it down for me, on his way through to his new home. He had offered it to me free, but I gladly parted with $50.00 for the bike, as it was worth that just for his effort.

Here it is just after I but the wheels and forks back on to get a look at the bike whole. Its a bit of a bitser, but basically it is a 1976 DT250C with 1981 electrics.



The next task was to see how it ran. I intend to give the motor a full rebuild, but I just wanted to hear it go just to know that the electrics work and that when I put the thing back together again(and believe me Ive stuffed the most basic rebuild up electrically before as I electrically retarded ) and also to see how it changed gear and all.
So with some new fuel and a cleaned out carb(so I thought) I tried to kick her into life. But damn no joy. Checked the spark. It had spark, but it was kinda erattic. Checked the carb and seems when I put the bowl floats back in, I........um............ seemed to have put them in upside down, which would close off the fuel needle.. So fixed that and then still no joy. Mmmm spark, fuel, compression. What more does a 2 stroke need? Problem was the plug. Seems I could have had some hairline cracks in the inside of the ceramics and it was arcing from the diode and not the body. Never heard that one before.
So armed with a new plug and a foam pod filter I kicked her in the guts and away she roared. Dont know what was louder inside my steel shed? The unsilenced muffler or the Yeehaaa from me.
So after a few revs and putting it through the gears, it was time to get down to the serious business of the strip down. It still had the gauges, complete wiring, oil tank and switches. These will go straight to ebay as I want to make the bike pay for itself in a small way. However I do want a proper 1975-76 fuel tank for it. And Im having a hard time tracking one down. So if anyones got any leads, please PM me.

Here she is with all the excess stripped of her.


Im lucky in a few aspects of this rebiuld as I will be doing most of the work and with stuff like powder coating , Im lucky to work in an engineering shop with a huge powder coating section that never says no to me.
My hopes are to have this on the track by mid year for the local clubs practice days, then dive into the 2013 season.

So for now stay tuned.
Cheers
Craig

Heres some excess bits
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Old 02-25-2012, 04:08 AM   #2
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This is going to be fun!

Here's a bit of DT bike porn to keep you motivated:

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Old 02-26-2012, 12:32 AM   #3
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Nice Hunsta tREV's old bike? oh and if you dont have much joy with the lectrics i can take pics of my DT175 that has been stripped down mind you its a 1981 model so i dont know if it will be the same
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Old 02-26-2012, 07:58 AM   #4
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I'm in!
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Old 02-27-2012, 11:03 PM   #5
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Ok and so in continues. With the wiring cut down to a bare minimum, it was time to make fit the better 2 stroke exhaust that came with the bike. It had the standard exhaust which doesnt really have a expansion chamber to speak of, but the other exhaust provided would need to be modified slightly to fit the barrel. This was a simple job of cutting off the flange from the standard header and welding it to fit the two piece expansion chamber set up. There had to be a few modification to the end to fit around the frame, with the addition of some lugs to secure it from rattling round. So to speak. The silencer at the end had been made and by the looks of the inside of the pipe never been used, so a quick shorten of the pipe, a joiner piece to mate them together snuggly, and bobs your uncle. New exhaust. Just hope it produces the right amount of power. has to be infinately better than the standard one.

Unpainted as yet. but I think it will be functional
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Old 02-28-2012, 04:38 AM   #6
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Great thread, good luck with this project.

That period aftermarket long-range tank you have is potentially worth a few bucks as I think they are quite rare...

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Old 02-28-2012, 09:46 AM   #7
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I'm in..!!! Yeah, I'm a sucker for this kinda stuff!!
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Old 02-28-2012, 05:37 PM   #8
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Quote:
Originally Posted by Tex_Aus View Post

That period aftermarket long-range tank you have is potentially worth a few bucks as I think they are quite rare...

Tex
They turn up on eBay all the time, usually for less than $50.

I think I payed about $25 plus postage for that one.
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Old 02-28-2012, 07:41 PM   #9
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Is that a tach drive coming off the front side of the case? I never had one of these but it makes sense to me....

Mike
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Old 03-02-2012, 02:21 AM   #10
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Originally Posted by Abdelhub View Post
Is that a tach drive coming off the front side of the case? I never had one of these but it makes sense to me....

Mike
No thats the cable off the oil pump.
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Old 03-03-2012, 06:10 PM   #11
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Well had another go at the bike this weekend. Only get weekends to look at it, so it was time to strip it all down to the bare frame to have it off to work for paint stripping and powder-coating. Wont be a flash colour. Just Satin Black.
Still trying to find a decent 1975-76 tank for it. Went to a local swap meet today, but no luck. Still the hunt goes on.

All the bits ready for stripping and paint.
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Old 03-04-2012, 12:40 AM   #12
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Youve been busy, Craig
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Old 03-04-2012, 02:26 AM   #13
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Youve been busy, Craig
Yeah got to keep my hand in mate. Plus its alot quieter in the man-cave these days than it is in the house.
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Old 03-04-2012, 05:07 PM   #14
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Still trying to find a decent 1975-76 tank for it. Went to a local swap meet today, but no luck. Still the hunt goes on.
Hi Hunsta. Nice to meet you at the swap meet. Hope you have some luck finding a tank.

You getting much of that rain down there in Gympie? It hasn't stopped here since the swap. Work today has been cancelled as we have been flooded out at work and lost power. School and Kindy has been cancelled too so I am looking after my 4yr old daughter today at home. My wife still had to go to work at the bank even with no power. I hope the rain lets up soon before we get cut off.
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Old 03-04-2012, 07:18 PM   #15
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Originally Posted by Mickldo View Post
Hi Hunsta. Nice to meet you at the swap meet. Hope you have some luck finding a tank.

You getting much of that rain down there in Gympie? It hasn't stopped here since the swap. Work today has been cancelled as we have been flooded out at work and lost power. School and Kindy has been cancelled too so I am looking after my 4yr old daughter today at home. My wife still had to go to work at the bank even with no power. I hope the rain lets up soon before we get cut off.
Gday mate. Yeah we got sh@tloads of rain. Am currently flooded in for the second time in 10 days. Water was over a metre deep and running fast. Still its all flash flooding so it should be gone by tomorrow.
Still one good thing, gives me more time in the shed for the bike. However I will lose a day for the stripping process.
Craig
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