Hey Guys,
It has 2 wheels; so is it a bicycle?
I'm apparently the first guy to put a DAX Titan bicycle kit engine on a Goped GSR, and I have to say...it's a great powerful stealthy quiet option for those of us that would rather not be making unmuffled chainsaw noises and smoke around the neighborhood. I'm really pleased with it.
Some video if you're interested:
GopedTitan - YouTube
I only am having one problem with the conversion. Rev limit. There is no way to prevent over-rev on this engine other than gearing up to the point where the engine can physically not push into it's rev limit. That works, as long as you're OK doing 35mph and don't have hills to climb. Let's say you prefer 20mph with more hill climbing prowess, and gear it accordingly. When under-geared like this, you can't WOT down the road on flat ground without over-revving the engine. I've tried restrictor plating with limited joy. I've tried throttle stopping, but then you have no power for hill climbing.
There's no indication of over rev. It doesn't stumble. The power band doesn't fall off. The noise it makes is not that much different at 7500rpm than it is at 6500rpm. People are used to winding Gopeds to 12000+, so there's no inhibition there either. So, "rider mitigation" is dicey, at best.
Is it possible to fit a CDI rev limiter to one of these engines? Has anyone done this? I'd be perfectly happy with an ignition cut limiter at say 7K as a means by which to give the rider feedback that they need to back off. Are there CDI limiters that will work without an onboard DC power system?
Thanks in advance,
Byron
It has 2 wheels; so is it a bicycle?
I'm apparently the first guy to put a DAX Titan bicycle kit engine on a Goped GSR, and I have to say...it's a great powerful stealthy quiet option for those of us that would rather not be making unmuffled chainsaw noises and smoke around the neighborhood. I'm really pleased with it.
Some video if you're interested:
GopedTitan - YouTube
I only am having one problem with the conversion. Rev limit. There is no way to prevent over-rev on this engine other than gearing up to the point where the engine can physically not push into it's rev limit. That works, as long as you're OK doing 35mph and don't have hills to climb. Let's say you prefer 20mph with more hill climbing prowess, and gear it accordingly. When under-geared like this, you can't WOT down the road on flat ground without over-revving the engine. I've tried restrictor plating with limited joy. I've tried throttle stopping, but then you have no power for hill climbing.
There's no indication of over rev. It doesn't stumble. The power band doesn't fall off. The noise it makes is not that much different at 7500rpm than it is at 6500rpm. People are used to winding Gopeds to 12000+, so there's no inhibition there either. So, "rider mitigation" is dicey, at best.
Is it possible to fit a CDI rev limiter to one of these engines? Has anyone done this? I'd be perfectly happy with an ignition cut limiter at say 7K as a means by which to give the rider feedback that they need to back off. Are there CDI limiters that will work without an onboard DC power system?
Thanks in advance,
Byron