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has anyone tried the schlumpf mountain/speed/high-speed crank drive?
Hi
I was wondering if anyone has tried the schlumpf mountain/speed/high-speed crank drive? http://www.schlumpf.ch Particular on a HP Velotechnik spirit that i consider buying. JonB |
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#2
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has anyone tried the schlumpf mountain/speed/high-speed crankdrive?
Jon Bendtsen wrote:
I was wondering if anyone has tried the schlumpf mountain/speed/high-speed crank drive? http://www.schlumpf.ch Particular on a HP Velotechnik spirit that i consider buying. I have tried it, and it works very nicely. I know a couple of folk with Broms (one with an underdrive, one with an overdrive) with them that are very happy. Ben Cooper at Kinetics (http://kinetics.org.uk/) has certainly fitted Schlumpfs to HPVel Grasshoppers so he can probably tell you what's involved and pros and cons. The Spirit has a range of gearing options available and you might want to consider one with a bigger basic range that would save you the bother of a Schlumpf to start with, assuming you haven't got it yet. For example, a DualDrive 24 speed gear set will give you a pretty big range and costs 129 Euros extra according to HPVel's price list, rather less than a Schlumpf. Or for rather more than the Schlumpf you can get a Rohloff which has various practical advantages for your money (such as not being at the wrong end of the gears when you switch the Schlumpf). Another thing is the Spirit is primarily aimed at "everyday" use, where the default 8 speed hub should see you through things pretty well. if you're thinking of taking it on long trips you may be better off on something like a Grasshopper or Streetmachine. They're not as immediately comfy and are fiddlier in traffic etc., but are more aerodynamic and take more weight on your back so often work better over a long ride. Pete. -- Peter Clinch Medical Physics IT Officer Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital Fax 44 1382 640177 Dundee DD1 9SY Scotland UK net http://www.dundee.ac.uk/~pjclinch/ |
#3
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has anyone tried the schlumpf mountain/speed/high-speed crankdrive?
Peter Clinch wrote:
Jon Bendtsen wrote: I was wondering if anyone has tried the schlumpf mountain/speed/high-speed crank drive? http://www.schlumpf.ch Particular on a HP Velotechnik spirit that i consider buying. I have tried it, and it works very nicely. I know a couple of folk with Broms (one with an underdrive, one with an overdrive) with them that are very happy. How easy is it to change using the heel? thats not the most agile part of a body, and do you ever change by accident? Ben Cooper at Kinetics (http://kinetics.org.uk/) has certainly fitted Schlumpfs to HPVel Grasshoppers so he can probably tell you what's involved and pros and cons. The Spirit has a range of gearing options available and you might want to consider one with a bigger basic range that would save you the bother of a Schlumpf to start with, assuming you haven't got it yet. For example, a DualDrive 24 speed gear set will give you a pretty big range and costs 129 Euros extra according to HPVel's price list, rather less than a Schlumpf. Or for rather more than the Schlumpf you can get a Rohloff which has various practical advantages for your money (such as not being at the wrong end of the gears when you switch the Schlumpf). I think the Rohloff is far to expensive. I do not like derailure gears, mostly because i never ever clean it. I have one now, and i just dont want to spend time cleaning it. It works fine? but my local bike mekanic is always saying i should clean it. I just never get arround to do it. Maybe it's because he's a road racing kind of guy. I would like a NuVinci, but i am not sure i can buy one without a bike. So i was thinking that i could combine a regular internal hub with a schlumpf drive to get a bigger gear range. Another thing is the Spirit is primarily aimed at "everyday" use, where the default 8 speed hub should see you through things pretty well. if you're thinking of taking it on long trips you may be better off on something like a Grasshopper or Streetmachine. They're not as immediately comfy and are fiddlier in traffic etc., but are more aerodynamic and take more weight on your back so often work better over a long ride. I was going to use it for everyday use, maybe a longer tour in the weekends, but still only hours, not a full day. JonB |
#4
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has anyone tried the schlumpf mountain/speed/high-speed crankdrive?
Jon Bendtsen wrote:
How easy is it to change using the heel? Fairly easy, and i've only had it out on test rides (I don't own one), and it wasn't a problem with previous zero experience (the tendency to look at what on'e doing would be less problematical on a 'bent, of course). and do you ever change by accident? No, never heard of this being an issue. I would like a NuVinci, but i am not sure i can buy one without a bike. So i was thinking that i could combine a regular internal hub with a schlumpf drive to get a bigger gear range. Ben Cooper/Kinetics has already put a NuVinci in an HPVel Spirit so again I'd talk to him about it. http://www.kinetics-online.co.uk/blog/?p=35 HTH, Pete. -- Peter Clinch Medical Physics IT Officer Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital Fax 44 1382 640177 Dundee DD1 9SY Scotland UK net http://www.dundee.ac.uk/~pjclinch/ |
#5
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has anyone tried the schlumpf mountain/speed/high-speed crankdrive?
Peter Clinch wrote:
Jon Bendtsen wrote: How easy is it to change using the heel? Fairly easy, and i've only had it out on test rides (I don't own one), and it wasn't a problem with previous zero experience (the tendency to look at what on'e doing would be less problematical on a 'bent, of course). and do you ever change by accident? No, never heard of this being an issue. I would like a NuVinci, but i am not sure i can buy one without a bike. So i was thinking that i could combine a regular internal hub with a schlumpf drive to get a bigger gear range. Ben Cooper/Kinetics has already put a NuVinci in an HPVel Spirit so again I'd talk to him about it. http://www.kinetics-online.co.uk/blog/?p=35 yes i read that. But his was a free sample, so i still dont know if i can buy just a nuvinci hub somewhere. How important is it to clean the derailure system om a Spirit? I think it is awfully close to the ground, but those tubes might protect alot of the chain from dirt, but also be a place where dirt collects and makes it harder to pedal. JonB |
#6
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has anyone tried the schlumpf mountain/speed/high-speed crank drive?
Peter Clinch wrote:
Jon Bendtsen wrote: How easy is it to change using the heel? Fairly easy, and i've only had it out on test rides (I don't own one), and it wasn't a problem with previous zero experience (the tendency to look at what on'e doing would be less problematical on a 'bent, of course). When I first got my Schlumpf-equipped trike I found the change a little difficult because my foot was slightly shorter than the cranks. Once Rob (my husband) fitted a pair of shorter cranks for me, it was fine. -- Carol (www.wrhpv.com) "If you are allergic to a thing, it is best not to put that thing in your mouth. Particularly if the thing is cats." - Lemony Snicket _The Wide Window_ |
#7
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has anyone tried the schlumpf mountain/speed/high-speed crankdrive?
Jon Bendtsen wrote:
How important is it to clean the derailure system om a Spirit? In real terms, not /that/ important. How many derailleur equipped bikes in the world see cleaning once a blue moon, if that? It'll work more optimally if you do clean it, and it will last longer, but it won;'t become a waste of space if you leave it a while. I think it is awfully close to the ground, but those tubes might protect alot of the chain from dirt, but also be a place where dirt collects and makes it harder to pedal. The tubes are teflon and don't clog up on my Streetmachine, and I've not heard of tube clogging problems form other 'benters. They give very little tangible resistance. I've found that the chain on my Streetmachine keeps a great deal cleaner than on my uprights. Even though they all have mudguards, the crank is places such that muck coming up from the front wheel below the mudflap will still hit the crank, while on a 'bent the crank is completely clear of this (as is the head of the chain tube). With less crap on the chain, that'll be less into the rest of the transmission too. Pete. -- Peter Clinch Medical Physics IT Officer Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital Fax 44 1382 640177 Dundee DD1 9SY Scotland UK net http://www.dundee.ac.uk/~pjclinch/ |
#8
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has anyone tried the schlumpf mountain/speed/high-speed crankdrive?
Jon Bendtsen wrote:
... tried the schlumpf mountain/speed/high-speed crank drive? Several of our customers use speed-drives, and I've ridden a LoGo trike with an s-d quite a few miles. I like the shifting ergonomics for a three-way gearing system, compared to a DualDrive, for example. The s-d also provides a good way to get higher gearing with a 406mm drive wheel without using oversized chainwheels. The downside: installation requires a chamfered BB; the crank is expensive; there is noticeable drag in the drivetrain; it adds weight and it's one more thing to lubricate or possibly fail. I wouldn't buy an s-d simply to avoid chain maintenance, since it would probably ultimately be cheaper to pay for the service instead, and chains still need to be lubed even without derailleurs. Shifting is easy for my big feet (47/US12), but other folks have opted for the Schlumpf 'paddles'. Quality of the product and the man behind the company (Florian) are both top-drawer, IMHO. NuVinci hubs are available in the USA, probably through bicycle dealers, but certainly through any small OEM. Ergonomically, I think the shifting is GREAT. It also solves the pervasive problem of getting high gearing with a small drive wheel. It's also heavy, unproven to some extent at least, and lacing into a small hub may not be a readily available aftermarket service. We will be doing an extensive 'shootout' comparison test of various drivetrain options for small-wheeled tadpoles early next year, with timed runs on a 10km course as well as a standardized route with a wide mix of trail conditions. We will make the results public, and you're welcome to rattle my cage for interim info. If you live in SoCal and want to take part in the testing, just let me know by direct email or by phone. Regards, Wayne Leggett 3-2-GO: The Trike Store Ventura CA USA |
#9
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has anyone tried the schlumpf mountain/speed/high-speed crankdrive?
Peter Clinch wrote:
Jon Bendtsen wrote: How important is it to clean the derailure system om a Spirit? In real terms, not /that/ important. How many derailleur equipped bikes in the world see cleaning once a blue moon, if that? It'll work more optimally if you do clean it, and it will last longer, but it won;'t become a waste of space if you leave it a while. okay, it seems like what i figured, that my bike mekanic just likes clean stuff. I think it is awfully close to the ground, but those tubes might protect alot of the chain from dirt, but also be a place where dirt collects and makes it harder to pedal. The tubes are teflon and don't clog up on my Streetmachine, and I've not heard of tube clogging problems form other 'benters. They give very little tangible resistance. I've found that the chain on my Streetmachine keeps a great deal cleaner than on my uprights. Even though they all have mudguards, the crank is places such that muck coming up from the front wheel below the mudflap will still hit the crank, while on a 'bent the crank is completely clear of this (as is the head of the chain tube). With less crap on the chain, that'll be less into the rest of the transmission too. Okay, that makes sense too. Thanks for the info, seems like i can safely get a Dual Drive then, and not worry about schlumpf drive until i need a wider gear range. JonB |
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