Your explanation of the kill switch scenario makes sense. The DCT bike should be able to bump start itself as long as the gear and clutch remain engaged.
Revzilla review of 2021 NC750
- Thread starter GregC
- Start date
the Ferret
Well-Known Member
- Joined
- Apr 14, 2021
- Messages
- 2,954
- Reaction score
- 4,270
- Points
- 113
- Location
- sw Ohio 21 DCT
I've wondered about bump starting a DCT. Has anyone done it? I mean you come out it's dead and you try and bump start it?
bigbird
Site Supporter
If it’s dead in neutral how do you get the DCT into gear and enagage the clutch?
If it’s dead in gear, then how do you release the clutch to get the bike moving to dump the clutch?
the Ferret
Well-Known Member
- Joined
- Apr 14, 2021
- Messages
- 2,954
- Reaction score
- 4,270
- Points
- 113
- Location
- sw Ohio 21 DCT
Good questions and something I have wondered about, assuming that you could NOT bump start a DCT
dduelin
Site Supporter
Well, you can't bump start it anyway I know. The clutches need oil pressure to engage/disengage so the engine has be turning over at least fast enough to generate some threshold level of oil pressure. Without that pressure the clutches are disengaged. If you turn it off while riding in 6th it will downshift to maybe 3rd before there isn't enough oil pressure to downshift again.
My 1986 Elite 80 can't be bump started either. I don't lose sleep over it.
We’re getting off topic here, I realize, but does the Elite 80 have a kickstarter? No, you can’t bump start the CVT, but our Honda Ruckus CVT scooters have kick start as well as electric start. I remember using the kick starter a few times in cold weather to save from draining a weak battery.
Alias
Site Supporter
Wouldn't it need a voltage supply for the fuel pump to work?
Somewhat. The fuel pump is just a pulser thing that fills the carb bowl. It doesn’t need to pressurize a fuel injection system. If the carb bowl had fuel in it, the engine would start and then the pump could run and replenish the bowl.
Last edited:
Alias
Site Supporter
Good answer. I didn't know how the mini Ruckus worked.
Sadly, Honda still sells some street models that are not fuel injected. I was sure I read a Honda news article years ago that Honda street models were going to be fully fuel injected by some certain year, but I guess it didn’t happen. Even the new-to-the-USA Navi is carbureted.
Alias
Site Supporter
I don't mind a carburetor, that's what I grew up with. Only two of my bikes have fuel injection. My carbureted bikes have no fuel pump, no fuel pump relay, no fuse to worry about, no associated wiring, no lost space in the fuel tank because of the pump and filter.
Bskicrash1
Active Member
- Joined
- Jul 11, 2021
- Messages
- 207
- Reaction score
- 246
- Points
- 43
- Location
- New Berlin, New York
The carberator is a major selling point for me when it comes to motorcycles that I will use off road and on camping trips. One less electrical system that can break down
LearnedButt
Active Member
I started with carbed bikes, and I'm sure not missing having to clean them. I'm a big fan of "less maintenance the better". If the NC had a shaft drive, it would be my ideal bike.
750dct
Active Member
- Joined
- Feb 10, 2022
- Messages
- 335
- Reaction score
- 137
- Points
- 43
- Location
- Mount Shasta, California
Yea, carbs are OK, but they are a step behind F.I., mainly for easier starting, less gumming up, more H.P., and better gas mileage. There is a reason all the cars went to F.I. about 30+- years ago.
The simplicity and reliability of the carburetor is nice; it certainly has advantages if you need to fix it many miles from home. No sensors to worry about, easy to bump or kick start as no battery power is needed. My carbureted bikes (scooters) all have electric fuel pumps, but they are external to the tank. Cold starting and running behavior of a carb engine is rarely a match for how well an EFI runs.
Since the carburetor is basically open to the atmosphere, fuel evaporation and potential for gumming up means I am regularly draining carb bowls anytime I expect an upcoming period of non use. I can think of 13 carbureted engines in my possession now, and all of them currently have drained bowls, and either fuel stabilized, or drained fuel tanks. and/or the engines were run with fuel shut off ‘til they died. Meanwhile, my EFI engines can easily sit for 6 months with no preparation, and operate flawlessly anytime.
I was interested in the Honda Navi when it was introduced to the USA, but when I found out it had a carburetor, I scratched it off my wish list.
Last edited:
mzflorida
Site Supporter
- Joined
- Jul 3, 2017
- Messages
- 1,444
- Reaction score
- 1,360
- Points
- 113
- Location
- Estero, Florida
Review on 2021 MY.
750dct
Active Member
- Joined
- Feb 10, 2022
- Messages
- 335
- Reaction score
- 137
- Points
- 43
- Location
- Mount Shasta, California
I like this style of video. More thought-out info without concentrating on driving and no distractions. I am surprised he didn't like the suspension; I haven't heard of a lot of problems with it before.
Gixus
Active Member
FI is a benefit in a number of aspects compared to carbs, but the major downside for me is the abruptness of FI on a motorcycle when you go over a bump, too sensitive. The NC even with its FI has such sluggish response on initial opening of the throttle that I must confess even a bumpy road doesn’t affect in unduly. I find carbed bikes have that slight lag when you open them up, which is a benefit when riding down a bumpy road.
I personally don’t find carbed bikes cause any particular problems. My Vfr750 starts easily, doesn’t gum up because I know how to maintain carbs, and gives great gas mileage. I’ll agree if a person has limited mechanical knowledge or experience with carbs, then they are better off with an FI bike than a carbed one.
Gixus
Active Member
My apologies for my late response. I somehow didn’t keep up with the replies on this thread.
I like the dynamics of riding a manual bike. The flow of riding one, braking, accelerating, changing gears. I know that I would become a lazy rider if I had a DCT. I would lose my riding skills. I know it to be a fact as until recently I always owned a manual car, but bought an automatic recently. I have noticed that I’ve become lazier. Having to change gear manually keeps me on my toes and more alert.
In response to your comment about being cranked over and the DCT changing gears twice at readline and not upsetting the chassis. You confirmed why I don’t want or need a DCT.
I see your photo appears to be Deals Gap, and with respect, I have to say that I wouldn’t describe you as being on the edge of your tire. Not that you are saying the photo depicts that.
I don’t know anyone who has the skills, even on a lowly 54hp NC, to be on the edge of the tire, and whack the throttle open, who wouldnt end up on their posterior. A DCT changing gears while on the edge of the tire is not in my view a good situation to be in.
I will say the NC is a nimble quick steering bike, and would be a hoot at Deals Gap with a decent set of tires and a skilled rider. I say this having ridden 3 gsxr1000s I owned there as well as my Vfr750. It wouldn’t be fast between corners, but it sure would be quick in the corners.
750dct
Active Member
- Joined
- Feb 10, 2022
- Messages
- 335
- Reaction score
- 137
- Points
- 43
- Location
- Mount Shasta, California
I hate manual trans. I see a lot of justifications for not having an automatic above but none that make any sense to me. Lose you riding skills? The skill of shifting that you don't need? Keeps you on your toes? You are already on your toes with an automatic an actually more aware of what's going on around you. Automatics are a safer way to go and more convenient. You let yourself get lazy only if you want to be and it's called being complacent, not a good idea when you are riding a bike.
