Surprise surprise, they refused, and have stopped responding. I sent them this to explain that the dimensions they had marked as '240' and '280' were completely wrong:Īt this point I said if he wasn’t able to supply me a longer seatpost, explain how Trace Velo got a longer seatpost, or help me in any way, I wasn’t able to use the bike frame at all, so I asked for a refund.
Trifox frame how to#
He clearly doesn’t understand how to read a geometry chart or measure their own bike frames.
The dimensions they have added to the left side are completely wrong. They replied with this (my measurements on the right, theirs on the left): I contacted Trifox support again and explained all of the above, I asked how Trace Velo (who they sponsored to promote this frame) managed to get 285 mm of seatpost extension and sent them the above photo. I’m 99% sure he is actually just clamping the seatpost way below the minimum insertion. But, the seatpost I have, only has 240 mm maximum extension? So, Trace Velo either has a longer seatpost, or, he has his seatpost set up 45 mm BEYOND the minimum insertion line (measured from two different videos): Using that measurement, and a photo of his bike setup, you can measure his seat post extension at 280-285 mm in the below photo. Then I realised that the Trace Velo guy looks quite tall – So I went to his build video and he says he ordered the size 58, which has 522 mm seat tube length (C-T). These are some of the pictures I made for them to explain the issue: I sent them dozens of photos and tried to explain the issue several times over the course of a week. To be honest, I don’t see how anyone my height or taller could possibly fit on this frame, or the size 56 or 58, with the tiny seatpost. I asked several times if there was a longer seatpost for larger sizes, they said no. I tried to explain all this to the Trifox support guy, but they don’t seem to understand my issue (or don’t want to). The frame is the right size for me in reach/stack/etc., the seat post is just extremely short. You might think I just need the next size up, but the size 56 only has 20 mm more seat tube length, and 20 mm more still isn’t enough, and the 56 has too much reach for me anyway (I’d need a tiny stem). The seat tube on the Trifox is actually 5 mm taller than the TCR, but the distance from saddle rail to min-insert line on the Trifox seatpost is just 240 mm, 60 mm shorter than the TCR seatpost! Basically, I need the seatpost to be at least 30 mm longer (40 mm really, to be safe with different saddles and pedals). On the Trifox X16, the maximum distance from the BB to the saddle rail is just 720 mm, so the saddle at maximum height is 30 mm too low for me. The maximum distance from BB to saddle rail on my TCR is about 780 mm, and I have it around 745 mm (depends on saddle and pedal stack, obviously). It was only after assembling the bike that I realized that there was a major issue: I have normal length legs for my height (inseam 83 cm), and on my TCR, the seatpost is about 20 mm from maximum height/minimum insertion.
The geometry chart is only 1-2 mm different at most, basically identical. I compared the geometry to their geo chart, and bought a Trifox X16 size 54. I’m 178 cm tall and I ride a Medium Giant TCR Advanced (2016). Whether off-road or competition, it can alleviate the fatigue of the rider.I bought this frame after seeing Trace Velo, Hambini and Oz Cycle give great reviews for Trifox frames.
Has a good shock absorption effect and higher comfort.
Internal routing design to make your bicycle more beautiful and tidyĤ. Equipped with a Trunnion rear shock mount, bring us the most efficient pedaling design, asymmetric design, we deliberately offset the position of the rear shock, so that the structure of the bicycle can be smooth and the carbon fiber can perfectly achieve one Linear structure, and when the rear shock absorber is locked, the cable movement space on the left will be reserved, so that the down tube can be kept unblocked through the rear shock absorber to the main turning point.ģ. The boost design can increase the space of the chainstay, which can use larger and more speedy flywheels, the design of frog legs is more facilitate, and it also increases the elasticity of the rear fork, more shock absorption, and more comfortable.Ģ. Our boost frame can fit a maximum 2.35″ size of tire. Boost gives a 148 x 12mm spacing which allows for the hub flanges to be further apart which gives a potentially stronger and stiffer rear wheel.
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