07-07-2014, 03:48 PM
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#31 (permalink)
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Master EcoModder
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My 87 Rebel 450 only had 3 tanks in my garage @68.7, but it had 6 gears. I think yours has 5. Probably be the same if I had stayed in 5th.
regards
Mech
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07-07-2014, 05:50 PM
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#32 (permalink)
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Master EcoModder
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CM 400 have the 6 spd gearbox, don't they ?
63 mpg is good.
Too bad you don't have a tach to assess where you are from peak torque ...
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07-07-2014, 05:59 PM
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#33 (permalink)
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Master EcoModder
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82 CM 450 had 6. Earlier was 5.
regards
Mech
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07-08-2014, 09:46 PM
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#34 (permalink)
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Quote:
Originally Posted by Daox
I was afraid of that. I was hoping to get more driving technique tips here versus mod ideas. I already have my hands full with my small fleet of vehicles. I'm really not looking for another project right now.
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Have you dropped the carb bowls for cleaning and tried the +5 psi and the skip-shifting? |
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07-08-2014, 10:00 PM
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#35 (permalink)
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Do more with less
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My 2 cylinder 4 strokes give better economy with a single carb and a y manifold. I have used 1.5" pvc glued it to shape and wrapped it in carbonfiber/epoxy. So far my 700 virago has been good for 6 years. of 50+ mpg. I used a VM Mikuni carb. They have every jet available for them.
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07-09-2014, 09:51 AM
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#36 (permalink)
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Administrator
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Quote:
Originally Posted by Frank Lee
Have you dropped the carb bowls for cleaning and tried the +5 psi and the skip-shifting?
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Nope, not quite yet. I haven't done anything lately with the bike but put gas in it and keep the chain lubed up.
The Civic is currently occupying all of my excess time as it is immobile at the moment with no head on the block. |
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07-09-2014, 05:24 PM
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#37 (permalink)
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Erm... skip shifting is one of those requested driving tips...
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07-09-2014, 05:28 PM
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#38 (permalink)
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Administrator
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I've never understood why skip shifting would be considered for fuel efficiency. You claim best BSFC at a specific piston speed. Skip shifting would bring you out of that sweet spot more than normal shifting, no?
That being said, most of the time I do skip from 3rd or so to 5th as I'm accelerating.
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07-09-2014, 05:31 PM
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#39 (permalink)
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I think the shifting process itself is very inefficient and the less of it the better. I do it in the car for good results too.
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07-09-2014, 06:42 PM
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#40 (permalink)
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Master EcoModder
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Quote:
Originally Posted by Daox
I've never understood why skip shifting would be considered for fuel efficiency. You claim best BSFC at a specific piston speed. Skip shifting would bring you out of that sweet spot more than normal shifting, no?
That being said, most of the time I do skip from 3rd or so to 5th as I'm accelerating.
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That would be a benefit only if you are done accelerating.
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