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Old 10-05-2011, 08:10 AM   #10306
Stormforce8
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Joined: Nov 2006
Location: New Forest, England
Oddometer: 519
Quote:
Originally Posted by john_aero View Post
i aint getting great mpg either. think max is 150 or 160 i get from tank
Yikes - the lowest I've had is 43mpg and the highest is 58mpg - all depends whether you're cruisin' or 'making progress'

Check that your chokes are fully closed.
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Old 10-05-2011, 09:34 AM   #10307
john_aero
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aaaahhhh i am pretty hard on the throttle maybe thats the issue as well
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Old 10-05-2011, 10:49 AM   #10308
tserts
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Joined: Nov 2008
Location: Yunanistan (Stans baby!)
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Quote:
Originally Posted by Stormforce8 View Post
Yikes - the lowest I've had is 43mpg and the highest is 58mpg - all depends whether you're cruisin' or 'making progress'

Check that your chokes are fully closed.
If the conversion came out right, I get 36 in the city (a bit heavy on the throttle) and the highway (about 150-160km/h) and 50 - 52 on the backroads touring solo.
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Old 10-05-2011, 11:25 AM   #10309
ujeni
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Location: Santa Cruz CA
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Originally Posted by jackwolfskin View Post
My @T is averaging 24 mpg and i was actualy driving slow 60mph ??? Whats the average your getting on these bikes? iam thingking theres something wrong on the carburators.
Yeah, that is way too low for that speed. A few things to check...starting with the easy stuff:
  1. Tire pressure correct?
  2. Air filter clean?
  3. Check to make sure the choke plungers are not stuck.
  4. Check your valve clearances
  5. Sync your carbs
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Old 10-05-2011, 11:29 AM   #10310
ujeni
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For the record, with everything listed above in good working order, I regularly get around 50 MPG US (60 MPG IMP or 21.2 KM per liter).
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Old 10-05-2011, 12:10 PM   #10311
jackwolfskin
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K ive talked to the mechanic and we are going to start with the chokes and then move on to the Carbs the bike has fited a Dynojet kit iam going to hask him to go back to normal.

Also did some one here tried to blank the chokes ? ive read on XRV.org that improves mpg dramaticly
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Old 10-05-2011, 06:01 PM   #10312
Squily
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Location: Esperance WA
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Quote:
Originally Posted by ujeni View Post
Yeah, that is way too low for that speed. A few things to check...starting with the easy stuff:
  1. Tire pressure correct?
  2. Air filter clean?
  3. Check to make sure the choke plungers are not stuck.
  4. Check your valve clearances
  5. Sync your carbs

I had the unfortunate incident of a mechanic's arse who mis-routed the one spark plug lead and it burnt through on the back exhaust (and subesquently shorted out). The bike was running just fine, but 12km/l and DEAD. Funny thing was, it went back to the dealers three times, which included a dyno run, but it still made maximum power on the runs (hence the dealer's reaction of you're kidding yourself- there's nothing wrong with the bike).

One Saturday and some invetigative techniques and I found the problem myslef and hey- presto!!!

So anyway- long story to say- check your spark plug leads
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Old 10-05-2011, 10:22 PM   #10313
Ladder106
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Location: Davis, CA
Oddometer: 4,902
The ATs and Transalps do not seem to react to any "simple" tuning techniques. Airbox/filter mods, exhaust mods, jet kits etc never seem to return any real power gains (yes, it might SOUND faster).

The only thing that happens is that fuel consumption goes up a bit. But it. seems to be mostly unburned and not adding anything to the process.

I think that unless you start playing with ign. timing, compression ratio and cams you're not going to make any real gains.....and then you'll affect all the famous reliability.

A common mistake when reassembling the CV carbs is to misalign the diaphrams on the carb body. I just recently did this. The bike seems to run really pretty well but one slide doesn't raise all the way. You only really notice it at higher RPM where the bike will feel weak. Vibes will increase across the rev range but nothing really terrible.

I felt pretty dumb when I discovered what I did.

As stated in the manual, if you raise the slide about 1/3 of the way with your finger, the diaphragm will be much easier to install correctly.
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Old 10-07-2011, 09:11 AM   #10314
john_aero
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thanks to rugged roads i now ahve SS spokes and lovely set SM pro gold rims to match bike originals

also got k60 scouts (150 rear)
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Old 10-07-2011, 07:51 PM   #10315
Squily
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Quote:
Originally Posted by john_aero View Post
thanks to rugged roads i now ahve SS spokes and lovely set SM pro gold rims to match bike originals

also got k60 scouts (150 rear)
I'd be interested to know how teh 150 fit in the swingarm. I'm using a 140 Mich Desert and it "just" clears- in fact they rub on the standard plastic chain guard, but as I'm now using an allu one, it's not a problem anymore
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Old 10-08-2011, 01:59 PM   #10316
john_aero
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Quote:
Originally Posted by Squily View Post
I'd be interested to know how teh 150 fit in the swingarm. I'm using a 140 Mich Desert and it "just" clears- in fact they rub on the standard plastic chain guard, but as I'm now using an allu one, it's not a problem anymore
bike has a 150 alreay fitted and no issues what so ever
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Old 10-08-2011, 02:41 PM   #10317
Stormforce8
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Location: New Forest, England
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Quote:
Originally Posted by Squily View Post
I'd be interested to know how teh 150 fit in the swingarm. I'm using a 140 Mich Desert and it "just" clears- in fact they rub on the standard plastic chain guard, but as I'm now using an allu one, it's not a problem anymore
Here's a couple of pics of a 150/70 R18 Continental TKC80 on my RD07A showing the abundance of space.............

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2000 Honda XRV750 Africa Twin RD07A - Rugged Roads Rallye Sport,
2002 Honda XRV750 Africa Twin RD07A - RWB
1989 Honda XRV750 Africa Twin RD04 - HRC
'Maybe I'm just simple - but can't we all just get along..........'
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Old 10-08-2011, 04:07 PM   #10318
john_aero
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Location: Ireland
Oddometer: 1,140
anyone know a @ being broken, want get aset of bolts and hardware as lot mine are mix an match
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Old 10-08-2011, 06:23 PM   #10319
Squily
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Quote:
Originally Posted by Stormforce8 View Post
Here's a couple of pics of a 150/70 R18 Continental TKC80 on my RD07A showing the abundance of space.............

Thanks. Looks like.

However- what if/when you run lower tyre pressures (e.g. running 1.2bar)? I've found I have about the same clearance on the 140 desert, but as soon as you start riding, there is some flex int he tyre that sometimes touches?
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Old 10-10-2011, 11:39 AM   #10320
Jim Rowley
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Location: Black Forest, Colorado
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If anyone is in the market for RD04 front side panels, I have a set in the flea market here.
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