Originally Posted by
Ron Damon
Those rims look quite wide and single wall with no internal bracing. This has a few important implications. One, the tire, even a 2.0" BA, will be spread quite wide, reducing the height or profile of the tire and hence the reducing compliance and comfort, which was the original rationale for a wide tire. Two, the contact patch is now wider, increasing friction and rolling resistance and increasing the likelihood of a puncture as there is now more rubber on the road. Three, narrower tires are even more compromised and may be out of the question altogether. Finally, the absence of internal rim bracing (double or triple wall) means that the rim has to be of a heavier, studier material in order to make up for the absence of internal bracing. Here we may have the triple whammy of increased rotational resistance due to rim weight; increased rolling resistance from the increased contact patch as the tire is splayed out; and increased inefficiency stemming from the IGH. Caveat emptor.
Note that the FnHon Storm maxes out at 2.3" rear tire width, as I myself verified in real practice.
nope. It’s a double wall aluminum BMX trick bike rim. Extremely strong and light. 35mm internal rim width is ideal for the BA, it flushes out quite nice, and brings it within the ETRO rim width-to-tire ratio spec.
The ~ 15mm internal width rims that most 20” folding bikes come with are not technically meant for 50mm tires.
I’ll post some pictures tomorrow, just finished building it and rode around my living room to test it 😆
works great although the 24t cog I had originally intended to use caused the chain to rub on the frame so I had to go with a 20t. Now if I want sub 20” gear inch low gear I will have to buy a new smaller chainring. May just leave it as is for this trip, gives me about 25-105 gear inches. A bit high but completely rideable even with some load.