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Monthly Archives: December 2010

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My Gios Feluca came stock with some crappy components. I’m still trying to get some SRAM Rival components, but these the Kenda Kwest tires need to go now. But “mini velo” means small wheels, so there’s not a lot of choices when you have 20×1-1/8” (451) rims.
There seems to be a lack of consensus among mini velo manufacturers as to which 20” standard to use (ISO 406mm or 451mm). Flatbar mini bikes more often have the 406 and the higher performance tend to use 451. Personally, I would have preferred 406 since there is slightly more variety in that size, but that wasn’t an option on the Gios.
After digging through distributor catalogs, I settled on some Primo Comet 20×1-3/8” tires, more commonly associated with performance recumbents. Compared to the Kenda tires (1-1/8” nominal width), the Primo are a little fatter, have a more supple casing and a smooth round transition over the tread. They are a little bit lighter than the Kenda too, but both are wire-bead.
The ride quality seems improved, but I have yet to try pushing these in fast turns. Since the bike is built around short reach brakes, this Primo tire eats up ever bit of clearance under the rear brake bridge and fork crown. I wish that the rims were wider. Lately my experience with my Bianchi dropbar mtb and my Hed-rimmed road wheels leads me to believe in using wider rims to improve tire performance, but for my Gios there is another advantage. The tires extend out so far beyond the rim’s brake surface that the brake caliper quick-release won’t open enough without slackening the barrel adjuster too. If the rim was wider, the quick-release alone would probably be sufficient.
On an unsuspended mini velo, the tiny wheels definitely do ride harsher than 700C for the same width tire, hence my desire for the fattest tire that the frameset could accept. However, some people do loaded touring in Japan with mini velo touring bikes.



스피더스의 순정타이어는 흔히들 고압-슬릭타이어라고 부르는 것을 씁니다. 티티카카 로고가 찍혀있는 켄다 K1018 타이어는 최대 100 PSI의 고압에 1 1/8규격의 슬릭을 자랑합니다. 콤파운드가 단단하면서, 적절한 그립력을 유지하므로, 코너링에서의 특성도 우수합니다. 자전거 속도의 절대적인 영향을 미치는 타이어라는 부속에서 기본에 충실하고, 고압의 공기압을 잘 유지시켜주는 자전거 전용 프레스타 타입의 밸브를 쓰기때문에 타이어와의 궁합이 잘 맞습니다.