Dancer Posted June 7, 2017 Share Posted June 7, 2017 I have been playing a bit with Freecad. Thougts about these pedals ? Link to comment Share on other sites More sharing options...
Gimlet Posted June 7, 2017 Share Posted June 7, 2017 You might like to think about a slightly larger radius curve on the outer corners to reduce the likelihood of them grounding on sharp turns. Link to comment Share on other sites More sharing options...
Dancer Posted June 7, 2017 Author Share Posted June 7, 2017 Like this ? Link to comment Share on other sites More sharing options...
Mono Posted June 7, 2017 Share Posted June 7, 2017 Looks pretty good like that, you probably can shave away a little useless material also by increasing the inner corner radius. Link to comment Share on other sites More sharing options...
meepmeepmayer Posted June 7, 2017 Share Posted June 7, 2017 Great you are playing with this Longer pedals would be great. If you want a challenge, design pedals that are a bit higher (off the ground) but still can be closed (more or less, at least a bit). Link to comment Share on other sites More sharing options...
Rehab1 Posted June 7, 2017 Share Posted June 7, 2017 1 hour ago, meepmeepmayer said: If you want a challenge, design pedals that are a bit higher (off the ground) but still can be closed (more or less, at least a bit). Great idea but unfortunately that would require a complete redesign of the pedal hangers as well. The 6 screw attachment holes in cast aluminum hangers would need to be drilled closer to the pedal mount articulation in order to raise the pedals proximally. This would require a complete remanufacture of the hanger design and also the plastic side shell if you want the pedals to close properly. You can see there is no space left between the top of the pedal and the side panel. Bummer as I would like this modification implemented also! GW are you listening? Link to comment Share on other sites More sharing options...
meepmeepmayer Posted June 7, 2017 Share Posted June 7, 2017 No no, I meant a pedal (assembly) that fits the existing wheel but is somehow higher (just 2 or 3 cm would make a big difference). Guess you need an extra moving part for that. See attached professional picture for an idea (incomplete, no idea how it stays "up" in the open position unless the red part does not rotate). Anyways, making such a thing (that actually works and fits existing wheels) might be a nice creativity+CAD design challenge. Link to comment Share on other sites More sharing options...
Gimlet Posted June 7, 2017 Share Posted June 7, 2017 My old IPS 132's had secondary pedal mounting holes on the hangers about 30mm above the ones the pedals were mounted on. I soon moved them up and found them much more pleasant to ride. Link to comment Share on other sites More sharing options...
Dancer Posted June 7, 2017 Author Share Posted June 7, 2017 How about this piece. Link to comment Share on other sites More sharing options...
meepmeepmayer Posted June 7, 2017 Share Posted June 7, 2017 That's wonderful I was fixated on new pedals/some kind of complicated folding assembly, but in the end you just need a simple non-moving piece between the existing brackets and existing pedals! (though bigger/longer pedals would be the next step, as the added height allows for more) I'd make it so the upper hole (for the pedal) is further outside instead of the same horizontal position. So the pedal is maybe 2 cm further away from the wheel. The critical scraping angle between ground and wheel is <45°, so you can easily get away with putting the pedal the same distance further outside as the distance it has been lifted (corresponding to 45°) [if you even want to push it that far outside]. This would allow the pedals to fold up unimpeded by the side plate extension (which is 1.5 cm + some space you need for a new pedal magnet); and wider pedals (further outside) might be nice anyways if you have the space. Link to comment Share on other sites More sharing options...
Dancer Posted June 7, 2017 Author Share Posted June 7, 2017 I have send the drawing to a local cnc machine shop for a price estimate. Link to comment Share on other sites More sharing options...
meepmeepmayer Posted June 16, 2017 Share Posted June 16, 2017 Any updates on this? How much of too much money do they want? Link to comment Share on other sites More sharing options...
Dancer Posted June 16, 2017 Author Share Posted June 16, 2017 Bad news. I was expecting a price of around 100 €/pair but I got a price of 450 €/pedal. Link to comment Share on other sites More sharing options...
meepmeepmayer Posted June 16, 2017 Share Posted June 16, 2017 450€ for some aluminium block and putting it in a CNC... even with labor costs and it being only one piece.... Maybe you'll find a better price somewhere. This is definitely a worthwhile experiment! I'm sure people would love if they could get reasonably priced custom pedals for their Gotways. Link to comment Share on other sites More sharing options...
esaj Posted June 17, 2017 Share Posted June 17, 2017 Maybe they have price breaks for larger quantities, if you made a group order then the price could get lower per pair? Of course better make sure the measurements and design is correct before ordering a big bunch... Link to comment Share on other sites More sharing options...
meepmeepmayer Posted June 17, 2017 Share Posted June 17, 2017 I'm pretty sure part of the price was trying to get OP to go somewhere else so they don't have to bother with it Link to comment Share on other sites More sharing options...
OliverH Posted June 18, 2017 Share Posted June 18, 2017 Done any finite element/ forces simulation? Link to comment Share on other sites More sharing options...
Dancer Posted June 18, 2017 Author Share Posted June 18, 2017 5 hours ago, OliverH said: Done any finite element/ forces simulation? Not yet, but I am planning to. I just stardet playing with Freecad. I will double check with an other FEA application. Link to comment Share on other sites More sharing options...
Dancer Posted June 19, 2017 Author Share Posted June 19, 2017 This might be cheaper. No cnc machining needed. Maybe DIY. Link to comment Share on other sites More sharing options...
Dancer Posted July 2, 2017 Author Share Posted July 2, 2017 Here is the final drawing and what i made so far. Link to comment Share on other sites More sharing options...
meepmeepmayer Posted July 2, 2017 Share Posted July 2, 2017 Cool! Only standard pieces with some holes for screws needed? Did you have something specifically made for you (the screw threads)? Can't wait to see the result and to how it works for you Link to comment Share on other sites More sharing options...
Dancer Posted July 3, 2017 Author Share Posted July 3, 2017 I bougth the alumunium pieces cut to length for 40 €. The inox bolts and 2 drill bits cost 25 €. A friend lets me use his table drill and threading bits. Link to comment Share on other sites More sharing options...
zlymex Posted July 3, 2017 Share Posted July 3, 2017 21 hours ago, Dancer said: Here is the final drawing and what i made so far. Very impressive. But be careful when off-road riding because the bulge part is easily getting hit. Link to comment Share on other sites More sharing options...
Dancer Posted July 3, 2017 Author Share Posted July 3, 2017 I could not wait and tried the pedals out the way they are. The outer side is a bit more tilted up as the original but I like it that way. Now I still have to solve the magnet problem. I was thinking of putting a piece of sheet metal under the griptape. Any ideas? Link to comment Share on other sites More sharing options...
meepmeepmayer Posted July 3, 2017 Share Posted July 3, 2017 Nice! You could glue a magnet to the underside of the pedals (the outside on the first picture with the pedal folded up). It would not get in the way of the grip tape or be a notable bump while you stand, and a magnet instead of a metal piece makes the pedal holding a bit stronger (it easily falls down with the stock magnets). Link to comment Share on other sites More sharing options...
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