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Has anyone retrofitted a schlumpf on their strida?

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Has anyone retrofitted a schlumpf on their strida?

Postby Azreal911 on Thu Jul 23, 2009 7:19 pm

I haven't seen any try this yet but has anyone attempted to modify their strida with a schlumpf 2 speed drive at the pedals?

http://schlumpf.ch/hp/hsd/hsd_engl.htm

I was very interested in the high speed drive or speed drive with their ratio of 1:1.65 for the speed and 1:2.5 gear ratio for their high speed model. This looks like an awesome upgrade but also very expensive! but if successful our strida can really get up to like 100+ gear inches. which would be downright scary and probably very hard to pedal so maybe the 1.65 ratio would be best for a good 92 gear inches for some good cruising speed (using the 56 gear inches that they post).

Has someone found another company that sells a cheaper version than this since it's almost the price of the bike! If not I will probably have to wait for Ming Cycles to come up with a retrofit part since their strida 6's seems to be all two speed. Hopefully it's cheaper!
Azreal911
 

Re: Has anyone retrofitted a schlumpf on their strida?

Postby Human Amp on Wed Jul 29, 2009 10:03 am

Ming seem to be doing this upgrade themselves but it only looks like its come out in places like Korea, so far. The Ming version of the upgrade comes with a smaller front 'chainwheel' and a shorter belt, to give a lower 'low' gear and a more reasonable 'high' gear.

(there again, add 18inch wheels and the ratios can be raised higher)

you are not the only person who wants this ..
viewtopic.php?f=5&t=2435

lets' hope Ming supply a lowcost upgrade kit (ie ATS version of Schlumpf, belt and chainwheel).

Personally, I like the simplicity of single speed - ( and it seems, from all the track bikes I see, that fashion is catching up with me, rather than the other way round as is normal :D ).
Bicycle = Human Amplifier :: :: Strida = Portable Human Amplifier
Human Amp
 
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Re: Has anyone retrofitted a schlumpf on their strida?

Postby fwd-bwd on Sat Nov 07, 2009 1:11 pm

I received an email from the Florian Schlumpf himself (or more likely his secretary) stating that a Strida kit will be available in about 4 weeks and its price in 2 weeks. A perfect holiday gift for Strida 5 owners? Here are the photos from Schlumpf:

Image
Image
Image
fwd-bwd
 

Re: Has anyone retrofitted a schlumpf on their strida?

Postby fwd-bwd on Sun Nov 08, 2009 7:15 pm

Just got a bit more info from Mr. Schlumpf: The upgrade kit will include the Speed Drive system, Ming Cycle's front sprocket (90 teeth?) and a belt (1360-8M-13?). He didn't mention whether an eccentric bottom bracket is part of the kit, but it is in the photos that he sent me. The kit will only be available through Strida dealers.
fwd-bwd
 

Re: Has anyone retrofitted a schlumpf on their strida?

Postby Minkair on Mon Nov 23, 2009 5:24 am

Nice beefy-looking locking ring for the bottom bracket in those pics!

Of course it needs to be, with the heavy torque loading on the bottom bracket housing when in high gear. Anyone who's actually bought and used a Strida 6 for some time? - I'm wondering if there are any problems getting a good locking fit in the housing. For conventional bikes converting to Schlumpf, a fairly fancy taper has to be put on the bottom bracket to keep the mechanism from creeping.
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Re: Has anyone retrofitted a schlumpf on their strida?

Postby ggoo888 on Tue Dec 08, 2009 2:42 am

Any new info on this? =D
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Re: Has anyone retrofitted a schlumpf on their strida?

Postby fwd-bwd on Tue Dec 08, 2009 3:54 pm

I haven't heard back from Schlumpf Innovations. Don't know if the kit is delayed again or Ming's blocking it. You are welcome to contact Schlumpf or your local Strida distributor and let us know what you find.

http://www.schlumpf.ch/
fwd-bwd
 

Re: Has anyone retrofitted a schlumpf on their strida?

Postby fwd-bwd on Fri Jan 01, 2010 3:43 pm

I found a presumably 3rd party Speed Drive upgrade kit on a Taiwanese auction site. It includes not a genuine Schlumpf but an ATS Speed Drive, a sprocket (which looks like a deadly ninja weapon :shock:), an eccentric bottom bracket, and a belt. The item goes for TW$16500 (about US$516) but sadly the seller does not ship oversea. If this thing actually works well, I hope someone can import it to the US and sell it here.

http://tw.page.bid.yahoo.com/tw/auction/1205605125

If the auction page gets removed after the auction is over, check out the photos here:

http://strida.kuso.com.tw/modules/xcgal ... -Kit-1.jpg
http://strida.kuso.com.tw/modules/xcgal ... -Kit-2.jpg
fwd-bwd
 

Re: Has anyone retrofitted a schlumpf on their strida?

Postby Andy B on Fri Jan 15, 2010 2:04 pm

I've just fitted a Schlumpf Speed Drive to my Strida Mini, using the original belt ring and some engineering work costing about £50. I will be posting pictures and more details soon....
Andy B
 


Re: Has anyone retrofitted a schlumpf on their strida?

Postby Hydra on Sat Jan 16, 2010 12:03 pm

Hi Andy.

I am really wonder with your project.


May be It would be a new chance for everybody that owns a Strida Sport Duo instead of fitting large wheels, because the mudguards dont match, the big tyres are less comfortable, more expensive and less available. As the fitting 18" wheels purposse in the SD is rising the speed, may be, we could get the same speed in our duos with a different alternative.
The alternative would be to fit the original plastic Strida front pulley to the current Speed drive and keep the 16" wheels. Unfortunattely, the original Strida 5 plastic pulley has four inner spokes instead of the five ones the miny pulley has. One solution would be to use the not holed Strida 3 plastic pulley, although I dont know if , after chopping, the structural strengh of this pulley would be enough.
At last, We could use the new alloy strida 5 pulley (optional), chopping it and adapting an intermediate thin alloy plate.

Regards

Hydra
Hydra
 

Re: Has anyone retrofitted a schlumpf on their strida?

Postby PeteT on Sat Jan 16, 2010 9:12 pm



Hey - well done, Great conversion.
I guess the gearing is perfect ? ( because the Mini has smaller wheels ).
PeteT
 

Re: Has anyone retrofitted a schlumpf on their strida?

Postby Andy on Mon Jan 25, 2010 11:03 pm

Yes - gearing is fine - just like Strida Sport duo
Andy
 

Re: Has anyone retrofitted a schlumpf on their strida?

Postby StridaD on Tue Jan 26, 2010 11:55 am

So does that mean this conversion wouldn't work with a regular 5.2? Because the 16" wheels would be too big? (Excuse my mechanical ignorance. :oops: )
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Re: Has anyone retrofitted a schlumpf on their strida?

Postby Hydra on Tue Jan 26, 2010 2:15 pm

Hi

The two speed schlumpf kit could be fitted to any 5 and 5.2 models with 16 wheels.
The gearing would be just like the Strida Sport duo with 18" wheels

Regards

Hydra
Hydra
 

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