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Old 06-06-2013, 12:11 PM   #14656
mait
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Location: Tallinn, Estonia
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Caskis, I like the Dakar style 2 tail-light setup. very nice bike
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Old 06-06-2013, 12:22 PM   #14657
mait
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Thanks for jetting advice guys. I continued experimenting with even bigger main jets - just to find out how the engine responds. I took the original 117.5 jets and 1.4mm drill bit and made 140+ jets out of them.

Results:
140 main jets.
Half of the UNI airfilter taped to reduce airflow.
top speed: 153kph on GPS
cold start knob pulled: 155kph on GPS

140 main jets.
Airfilter untaped
top speed: 132kph on GPS
cold start knob pulled: 137kph on GPS

Out of curiosity I will take it even further and drill one of the jets to 1.5mms tomorrow.
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Old 06-06-2013, 03:59 PM   #14658
Bambi
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Hello all,
to Wundis: you said, that you drained off some surplus oil. Are you sure, that the needle-valves do close correctly? On SR 41 (and 42?) the petrol can get into the oil as the float-chamber has no overflow (it's got one on the SR 43)!
to Caskis: nice bike! Looking at the seat it seems, that you're a tall guy! Welcome and have fun with the bike and with us!
Kind regards, Bambi
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Old 06-06-2013, 11:26 PM   #14659
wundis
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Quote:
Originally Posted by Bambi View Post
Hello all,
to Wundis: you said, that you drained off some surplus oil. Are you sure, that the needle-valves do close correctly? On SR 41 (and 42?) the petrol can get into the oil as the float-chamber has no overflow (it's got one on the SR 43)!
to Caskis: nice bike! Looking at the seat it seems, that you're a tall guy! Welcome and have fun with the bike and with us!
Kind regards, Bambi
Bambi it was me who put too much oil in there, gas doesn't flow into the cylinder. Thanks for the consideration though.
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Old 06-07-2013, 01:30 AM   #14660
robmoto
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Quote:
Originally Posted by mait View Post
Thanks for jetting advice guys. I continued experimenting with even bigger main jets - just to find out how the engine responds. I took the original 117.5 jets and 1.4mm drill bit and made 140+ jets out of them.

Results:
140 main jets.
Half of the UNI airfilter taped to reduce airflow.
top speed: 153kph on GPS
cold start knob pulled: 155kph on GPS

140 main jets.
Airfilter untaped
top speed: 132kph on GPS
cold start knob pulled: 137kph on GPS

Out of curiosity I will take it even further and drill one of the jets to 1.5mms tomorrow.
I think myself your going the wrong way , bigger jet size would be needed because your slides probably are not fully lifting, so top speed is down
If a SR/43 use 130,s stock with there improved air cleaner and box 130/ 132.5 will still be the same on your bike and is just a case of reducing the air intake to get the right amount of vacume for the carbs to full lift the slides , just saying.
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robmoto screwed with this post 06-07-2013 at 01:36 AM
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Old 06-07-2013, 02:10 AM   #14661
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Quote:
Originally Posted by wundis View Post
:)
no, putting back the old camshaft was just an idea, im not going to do this, since as i said it being restored will eat my brand new rockers.

its running on new camshaft now, and runs pretty well with my brothers carbs. my carbs run horible.

so i expect my next post to be full of closeup carb pictures. ill try not to make it look like cheap porn.
what should i soke them in? conventional carb cleaner is boring, and I don't have access to an ultrasound bath.
Ok all is good , my mistake I thought the old cam was back in , I,m with Mait for cleaning fuel and compressed air, pluss carb cleaner preasure pack can but don,t use it with the O rings in place or anywhere near them.
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Old 06-07-2013, 04:40 PM   #14662
Bambi
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Hello out there,
I promised you a link to the pics of our annual meeting of the German Big forum, so here you are:
http://www.dr-big.de/forum/viewtopic.php?f=8&t=81543
If you open that page, some pics are visible at once (some of them can be enlarged by clicking into them). If you click on the blue links, you'll find a lot more. The page is still under construction, so you should find more pics and links in the near future.
I hope you'll share some of the fun and the laughs we had last week-end. And if you see a small, thick, long-grey-haired (ok, more to the back of the head) and bearded guy beside a Marlboro-Big - that might be me ...
Kind regards, Bambi
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Old 06-07-2013, 10:56 PM   #14663
ELKS
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RE: Dr750 Carb for sale

Hi,

Sorry to interrupt this thread, I need to buy a carburetor for my 1988 DR750, please let me know if anyone selling?

Urgent.

Eugene
eugene.lim@yahoo.com.sg
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Old 06-08-2013, 12:28 AM   #14664
mait
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Eugene, I may have my carbs for sale maybe in 2-3 weeks. They are in good working order, all cleaned, o-rings replaced. Some different mainjets and pilot jets will come along.

mait screwed with this post 06-08-2013 at 01:36 AM
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Old 06-08-2013, 12:13 PM   #14665
spen
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Another sunny day so what better to do than stick the tanks on the DR .I had thought of a white seat with the Suzuki in black but i may just go for a black seat to "tone" it down a bit



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Old 06-08-2013, 01:30 PM   #14666
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well done !
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Old 06-08-2013, 02:04 PM   #14667
Resi
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yesssssssssssssss!
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Old 06-08-2013, 02:43 PM   #14668
Simosez
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i took my Big well outside its comfort zone yesterday and it performed admirably.
Rob your gunna love this bit. i was supposed to meet a group of mates on enduro bikes at the Kowmung and ride twin track/fire trails to Hampton. i was supposed to be on my KTM450. after servicing it last weekend, today it would not start had a quick check of things - fuel, spark, air. the fire triangle seemed to be complete but it would not fire. FYYFF. anyway, with time running short i had no option but to ride Big.
i hauled arse down the road to meet the boys who ended up being later than me anyway.
after saying G'day, off we went.
i never really realised how quick these things are!! they are very deceptive. on reasonably grippy surfaces the Big girl held her own. it was only in the greasy red mud where you have to be really careful about corner entry and line selection.
when we hit a 10k gravel road transport section, that's when the boys were surprised! i started last and proceeded to blow them to the weeds with big drifting slides at 120k+ the only bloke who could stick with me was a former 500cc dirt track champion on a 510 Husky
in the end, i went everywhere they did except for one monster of a valley that changes altitude of 400m in arund 1.6k down then 1.8 up the other side with big ruts and rocks everywhere, so i went around and ended up riding someone elses bike up the worst section for them.
the only drama i had was hitting a double mud hole a bit too quick. when i saw it, i realised i was carrying too much speed to go around, so i hit the brakes to wash off some speed then got on the gas for the first hole which was cool, then when i got a better look at the second hole i saw a square edge about a foot and a half deep there was nothing i could do at that point but brace for impact. i can tell you all that my front wheel definately does not hit the frame on full compression but bloody hell, it was bone jarring!
at the end of the day, the boys were impressed with Big and so was i
KTM-0, DR Big -1
sorry no pics. too busy riding.
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Old 06-08-2013, 02:59 PM   #14669
spen
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Resi i will need to order an alloy sump guard from you are they in stock or made to order ?
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Old 06-08-2013, 06:26 PM   #14670
robmoto
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Hello Bambi, looks like the DR big weekend was another great weekend for you over there , when listening to the video on full sound there is a lot of ticking and thumping going on , was the numbers down from last year.
Soon we may have one over here but Ozz is spread out a bit to far to get them all together at once, I know of 11 soon with in a 300k radius of my place.

Spen theres no arguring your bike has got the looks , those colours were made for the BIG,. beautifull.

Simon , I am going up the scrub in a minute your ride yesterday has now got me all reved up , a few mods here and there and they are a very capable bike in most situations , and as you found out too they stick to the fast dirt back roads with ease and comfort for us old blokes meaning me .
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