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Old 08-29-2009, 06:01 PM   #4171
nobody
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What`a beauty...Always no.1 in my wish list.
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Old 08-29-2009, 06:28 PM   #4172
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Quote:
Originally Posted by nobody
What`a beauty...Always no.1 in my wish list.
Looking at those specs it was the good old days when they built a simple reliable and mostly durable motorcycle. Judging by the threads on this forum of the woes the BMW 800GS is having it feels good to own an Africa Twin...in any shape or form. Watch for AT's, as they come up for sale in the lower 48 more than you think.
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Old 08-29-2009, 07:34 PM   #4173
Jim Rowley
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Quote:
Originally Posted by GSPD750
Watch for AT's, as they come up for sale in the lower 48 more than you think.
One in flea market right now.
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Old 08-30-2009, 12:33 AM   #4174
atgreg
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US AT help needed

http://www.advrider.com/forums/showthread.php?t=501321
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Old 08-30-2009, 01:09 AM   #4175
Jim Davis
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Not shredding this one!

Hi all, finally got the Sahara rear tire and mounted her up. Chalk one up for the Africa Twin, the rear wheel is so easy to get off you could do it blindfolded. Well maybe not, but it was my first time and I had it off, changed the tube and tire and back on in less than an hour.

I have some questions, but first look at these photos:

http://easternbeaver.com/Main/Stuff/...re_change.html

Questions:

1 - why is there no light spot marked on these tires? Is that normal for tube type off road tires? Don't people balance them then? I put on 40 grams just to get close. Not sure if that's a lot of weight, heck it's less than 2 ounces but it's more than I prefer.

2 - why is it that people pinch their tubes?

3 - why don't people always replace a tube with a new tire?

4 - why does my wheel rim have holes that look like they'll eventually eat right through them?

I can't wait to test out this tire, man this thing has thick tread on it!
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Old 08-30-2009, 04:31 PM   #4176
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SOHC and not DOHC

Quote:
Originally Posted by GSPD750





There is a typo in the brochure, AT is an SOHC engine each header has a single overhead camshaft with 3 valves.
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Old 08-30-2009, 08:41 PM   #4177
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Interesting Find

This seems a bit odd but there is reference to the 15.9 kgm of touque ? Doesnt seem right.

And there is reference to 62.7Nm of torque.

Interestingly enough the AT has more torque than a KTM 950 @ 55Nm of Torque.

No wonder the KTM couldnt get away from me on Sunday.
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Old 08-30-2009, 09:51 PM   #4178
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torque value

Quote:
Originally Posted by Hodgo
This seems a bit odd but there is reference to the 15.9 kgm of touque ? Doesnt seem right.

And there is reference to 62.7Nm of torque.

Interestingly enough the AT has more torque than a KTM 950 @ 55Nm of Torque.

No wonder the KTM couldnt get away from me on Sunday.
It's another typo, the real value is 6.1 kgm (even though I saw 6.8 kgm on other publications).
This gives 59.8 Nm at 5500 rpm.
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Old 08-31-2009, 12:44 AM   #4179
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59.8Nm is still quite good for a bike of that era. Compared to the 950KTM.

Quote:
Originally Posted by DakarBlues
It's another typo, the real value is 6.1 kgm (even though I saw 6.8 kgm on other publications).
This gives 59.8 Nm at 5500 rpm.
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Old 08-31-2009, 01:36 AM   #4180
Jim Davis
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ho de ho, more RD03 tire testing

Well it is a bit of tradeoff, you want high HP figures to sell bikes, you give up some torque :-)

Now, I'm curious about tire pressures on my AT. If all those conversions and figures didn't make your head hurt, how does 190 Kpa front and 230 Kpa rear sound? High? Thought so...

Well that's what I had in my AT today and it felt quite hard. I've lowered it when I got home to 160 front and 190 rear, does this sound about right for mostly pavement riding on Saharas?

I started out today in the rain, with the new Sahara on the rear I was taking it easy, still I could feel the rear step out a bit at the first corner - scary having a new tire in the rain!

Anyway, scrubbed her down pretty good today - after a few hours she felt pretty good. At least it got well washed off. Next outing I'll have to work on the chicken strips.

New tire, what with higher pressure and new tire profile, felt rather odd today compared to what I'm used to. I'll try the lower pressure tomorrow and compare.

So what pressure are you all running? (for data, I am a 90 KG rider on an RD03).

No idea of proper pressure. I can't even remember what I ran before the tire change but I know the front was a bit soft. I'm going to keep an eye on that one, might have a patched tube with a slow leak, or I might have just run it low.

Pressure conversion chart here:
http://www.webbikeworld.com/Motorcyc...sion-chart.htm

Oh ya, noise? The new Sahara rear is quieter at speed than the T63 that came off, but it's got a pucka pucka kind of sound when going real slow. You can hear the tread gripping the pavement.
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Old 08-31-2009, 02:30 AM   #4181
atgreg
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i run about 30psi front & 32 rear on the tar, 22F & 24 on dirt roads, with Michie deserts on for outback trips I'll go down to 18 F+R for sandy sections
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Old 08-31-2009, 03:56 AM   #4182
Jim Davis
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Greg, thank you for that info. The pressures sound a bit high for the kind of pavement I ride, but would likely be fine on a straight smooth road.

Unfortunately (or rather, fortunately :-) I like to seek out the twisty roads with often bumpy pavement so those pressures might be a bit high for me.

I may even out front to back a bit more as you've done, slightly higher in back than front but not too much, I think about 26/28 psi will do for me.
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Old 08-31-2009, 04:07 AM   #4183
Capse
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hello

I new around here and a proud owner of a RD04


i have a problem with it and i don t know what it is.


When i pass over bumps there is a strange noise comming from the front fork witch i ve serviced and seems to be working fine

A friend told me the cause could be the bearings from the steering yokes


Replacing the bearings should solve the problem?



Thanks


P.S I l post some picures with the bike soon
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Old 08-31-2009, 06:53 AM   #4184
locorider
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Not a difficult task to perform. First lift the front wheel and with a little help, try to move the whole front suspension assembly to see if there is a bearing problem....did you placed the correct amount of oil in the forks?
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Old 08-31-2009, 03:12 PM   #4185
Gian
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Nice RD04 brochure, the driver has the same jacket boots and pants of the guys who used the "650 Marathon" at Dakar '89 and '90
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