Fair enough. I think the primary concern is the 30 pounds of fluff I've put on since the accident in November. I would hope (maybe not?) that if they actually felt I had 90 pounds to lose, that there'd be discussions of intervention.fatty said:Doctors don't care about power since the mass needed to get there is still a liability. I was assuming they preferred you get down to normal weight for medical reasons -- especially orthopedics.
Gotcha. I hadn't considered that there might be better options than what they are offering. That's my inexperience Their "max" option for brakes were BB7, which admittedly means nothing to me. If BB7 isn't that great anyway, then you're absolutely right.fatty said:Agree that the stock brakes/shock are a waste. Just a question of paying highest markup for something that probably isn't quite perfect or what you would choose, or actually choosing it yourself..
right on. And really, that's it, isn't it. I've gained 30 pounds pretty much solely because I'm around the house ALL THE TIME. That fridge starts to look like a solution for boredom sometimes. There's positive impact from just getting out and doing anything.goatman said:i dont pedal and lost 30lbs just because it gets you out the door :wink:
Thanksgoatman said:phaserunner is the controller from grin
That works for me, if it gives me the capabilities I'm looking for. But as Fatty wisely suggested... I should slow my roll a little bit and get some hands-on first, then decide to buy, then upgrade as required.goatman said:if you do the math in Canadian pesos youll be at or a little under $10k
Oh man, don't tell me that!goatman said:guy had a like new/used trike (fat tad full suspension) on the island just before xmas for $1200
bcsteeve said:Ps. I remember trying so hard to buy that first model Insight (wow, that was TWENTY years ago!). Back then, the local Honda dealer made it impossible. I didn't understand the politics behind it at the time. I just remember thinking how stupid it was that they're saying things like, "you're the 100th person to ask about it, but no we can't get them". So glad those days are behind us.
"rock crawler" and "offroad" aren't really the same thing. A rock crawler does that--it crawls over rocks, usually big ones. well-articulated suspensions and such are typical of the motor vehicles I've seen like that. Offroad bikes, atvs, etc., are typically made to perform at speed on rough ground.bcsteeve said:Well, see that's what I'm trying to figure out. That's my definition of "off road". Sure, they are true mountain bike trails, and yeah I'm expecting the trike to handle that. That's where some of my confusion comes from, because I see Utah Trikes videos of them "offroading" and they are casually going down gentle slopes of well manicured lawns. On the other hand, there are still photos suggesting some of these things can be genuine rock crawlers.
I have expereinced that myself since getting sick last year (and previously for other reasons). What I would do is have some form of pedal torque control, so that pedal force can be used to "amplify" your power with the motor, giving you more assist the harder you have to push to get it.Exercise. The whole point is exercise. I wouldn't get electric assist, except that I know the terrain (even my driveway) is too steep for my deconditioned body. it would be pointless and discouraging. I think I'll be able to resist the throttle and only use what I need. Afterall, I'm pretty motivated to recovery and get back to where I was. My weight has ballooned because I haven't been able to do my regular activities.
I'm more discussing your options, and the reason for them, than recommending anything specific. Trying to give you more information to base decisions on, stuff you might not have thought of.I'm a little confused on what you're recommending.
Yes, it is. It replaces the whole crank spindle and cranks and pedals and chainrings with it's own. At a guess you would probably want to replace it's output chainring with as small a ring as you can fit on it, for the best torque you can get, rather than speed, since you won't be able to shift the front rings down to lower gears, only the back.From my searching, I'd say that the vast majority of these tadpole trikes that are advertised as off-road use the Bafang BBSHD system and I think that's a mid-drive that's at the pedals, right?
No surprise, it was never a hugely popular system becasue it doesn't fit on a standard bike frame, it requires more space and a longer frame (like on cargo bikes, trikes, etc). It's better for a number of use cases because it leaves you with your entire drivetrain intact, only changing out the left crank for a tandem crank that has a chainring on it for the SM motor to drive. That motor is typically a small hubmotor mounted in the frame instead of a wheel, but it could be any motor capable of low speed high torque that can have a bicycle chain sprocket installed on it to drive the crank chainring.I've never heard of the Stokemonkey you mention.
The GAA motor is not really different in capabilities than many other similar-sized hubmotors, *except* that it is easy to mount on a tadpole trike's front wheels, which are often single-ended axles, *and* it has integrated torque arm on the stator mount itself instead of depending on axle flats to transmit the motor torque to the frame (which is how all the cheap stuff works). You can't mount a double-ended-axle hubmtoor on those because the axles are not strong enough to handle the loads that way, and will bend or break. So they are nearly the only hubmotor option for such trikes.The alternative seems to be hub motors, but most say that it isn't suitable for my needs because it will burn out. Then there's the Grin hub motors that (at least say) they are a different animal and maybe give the best of both worlds?
That would be nice, but almost everytime I try to price something out (for example, on Utah Trikes) it nets out closer t $10k. Then again, I don't know what options are really necessary. For example, it is like USD$1500 to upgrade to a Rohloff but I don't have any clue if that's necessary or advantageous or even detrimental. The Bafang would be around $1200 (including the battery, which they don't give specs for) and the trike itself starts at $2k so I can see how it can get expensive quickly. The Grin motor setup I think is $3-$4k for one and something like $5k for two, and that doesn't include the Trike. But maybe I'm overshooting?
For the battery, it's much safer to figure out what you will need for watthours (wh) for your expected trips, and ensure you get one (or more) that can do that, while also providing all the power the system needs the whole time. If you don't, you may go out on a trip and get say, a quarter the way thru, and have to pedal all the way back, then order three more batteries just to be able to do that particular trip route.I appreciate your battery analysis, but realistically I imagine once I settle on a system (Bafang vs. Grin vs. other) I'd likely go with whatever they recommend to pair it with. They all seem to come as kits. Or is that being lazy?
No, he rohloff is just stronger. it's an igh, but only has a signle input sprocket.so is that where, for example, the Rohloff comes in?amberwolf said:One way around this problem is using one of the few IGHs that also supports a freewheel or freehub with multiple gears, so you have more total gears and can shift down far enough for really slow hill stuff, etc., but also stil shift up for faster flatter stuff.
look at that thread I linked by ecat, it'll hlep you see what's involved.'m good at design. So I guess worst case is to design a bracket and have it machined somewhere? I'm a hands-on, visual learner... it probably becomes clear once I have it all in my hands. I'd just hate to drop this coin and find out it isn't possible for some reason.
rememgber the trike with all the elecrtics may be 100lbs+ by itself. but yeah, it could be that harsh. depends on hwo many motors and how capable they are, hwo they're used, etc etc.I could find no combination that never had a burnout risk. 300lbs and 20% is just that harsh, I guess.
depends. if you have temperature sensors in the motor, youc an have either a manual montiro display, or you can have a controller or cycle analsyt start limiting power over some temp and cut off at a higher one, to prevent damage.Is there some warning when things get overheated? Or it just craps out?
bcsteeve said:Gotcha. I hadn't considered that there might be better options than what they are offering. That's my inexperience Their "max" option for brakes were BB7, which admittedly means nothing to me. If BB7 isn't that great anyway, then you're absolutely right.
bcsteeve said:Fair enough. I think the primary concern is the 30 pounds of fluff I've put on since the accident in November. I would hope (maybe not?) that if they actually felt I had 90 pounds to lose, that there'd be discussions of intervention.
goatman said:i looked at the fat tad, theyre 20x4.2 tires, that could be issue trying to lace a dd hub to a 32 hole rim
amberwolf said:Many *delta* trikes have a live axle with both rear wheels directly connected to it, and some use a live axle with a differential between them, but I don't know that there is a "most" type, that I've seen. Chalo has probably seen more different kinds of trikes than I have, though.LewTwo said:I believe most trikes have a live axle (AmberWolf please correct me if I am mistaken).
'Tis not the first time I have been wrong ... likely will not be the last as well.Chalo said:amberwolf said:Many *delta* trikes have a live axle with both rear wheels directly connected to it, and some use a live axle with a differential between them, but I don't know that there is a "most" type, that I've seen. Chalo has probably seen more different kinds of trikes than I have, though.LewTwo said:I believe most trikes have a live axle (AmberWolf please correct me if I am mistaken).
Most trikes have one wheel drive. Deltas either use a solid axle with one wheel that drives and one that spins freely on the axle, or they use separate axles left and right, and drive only one side. Tadpoles almost all drive only the rear wheel.
Once in a long while, I've seen an old granny trike that drives both half axles through two freewheels. A very few older granny trikes use rear differentials, and most pedicab trikes do too. I have seen a handful of Russian made tadpoles that drive both front wheels, with overrunning clutches rather than a differential.