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Hi,
I am doing more road work / racing as I live in the mountain biking abyss and 50 quid a go in fuel to get to Cannock (nearest place of any quality) is rubbish.. And involves the M6.
I'm looking at this frame: http://flyxii.com/products_1.asp?menuid=308&id=1061. I can sort a complete Ultegra / Rival build with Deda mid range finishing kit and a 1500g wheel set for £979.50.
My friend ordered a frame from the firm and they were excellent, weighed less than claimed and rides sweet with no flex. His bike has now done 2400 miles with no problems at all.
They only stock up to 56 with the 300mm aero post included.. I'm currently riding a Boardman Pro in 57.5 with 58cm top tube but it's too long for me. I have 34" legs but am only 6'. I have put an in-line post and 100mm stem on the Boardman which has improved things a bit but would rather downsize and get a good fit.
I understand about compact geometry having ridden mountain bikes for 15 years (I get away with an 18" and loads of post), I'm a bit concerned that the 56 listed is too 'compact' - I will only get 200mm ish from the post and the seat tube is listed as 500mm, a total of 700mm. My CB is at 750 with a Arione fitted.
I have a CAAD4 on a turbo in 56 and the top tube is perfect with a 100mm stem, 150cm head tube and some spacers - 5mm clearance knee to bar and a healthy but not stupid amount of post, I think the seat tube is 56cm..
No one on Bike Radar replied, too busy carb loading.. help...
Thanks
Steve
34" legs?
6' tall?
58cm.
next question...?
....and your question is caller?
The frame one of those China 'You pays your money' frames. That said Ritte racing use something similar, give it some jazzy paint and slap on an extra grand.
58 top tube is too long - 56 fits better with long seat tube.
I know the frames aree good, mate has the last model but that was traditional sizing - Question remains - Will I be OK with 50cm seat tube, the 56.5 top tube is perfect with 110mm stem.
I have a CAAD4 on a turbo in 56 and the top tube is perfect with a 100mm stem
once you know your effective top tube from this bike (assuming it fits) then you can size any bike just from a geometry chart (taking into account the seat angle/maintaining the same knee over spindle with your preferred crank length, and how a shorter head tube affects cockpit length)
i would lengthen the stem though to a 120-130 and get a frame with the corresponding 2cm shorter ETT. the bike will handle better for racing.
Sweet, cheers - 56.5 with 120mm and 160mm HT will be spot on, do you think I would get away with th sloping geo - a 500mm seat tube and 300mm post, 172.5 cranks. SA is 74.5 so only .5 off the CAAD. My 73 deg CB has never felt right, had to get inline post, push saddle forward etc..
Cheers
I am 6', 34 leg and ride a 57cm frame, the stem is a little short at 110, personally i preferred to go to 175 for the cranks.
The size should be ok.
What i would caution seat position shouldn't really be used as a way of shortening the effective top tube. IF your having to push saddle forward is the problem the seat angle or is the bike a bit long and your compensating?
as above don't move the saddle and change your knee over pedal, this shouldn't change between your turbo bike and new bike.
ignore anecdotal sizing it's irrelevant when you already have a bike that fits and you can take reference measurements from.
the 56.5 top tube is perfect with 110mm stem.
then buy a long enough post 😆 can you get a longer aero one if you need it?
if this frame gives you the correct cockpit length with a 'normal' stem length then all you need to know is will your post enable you to put the saddle in the same place as your well fitting turbo bike?(relative to BB)
if you buy a long enough post and have the correct set-back duplicating your turbo bike position will be easy
The CB is too long at 58tt, hence the saddle, inline etc...
Dale is fine at 56 tt and 100mm.
China thing is 56.5 and will have 110/120mm stem as 74.5 SA
Main concern was the seat tube being too short to allow me to attain correct saddle height, the post is full aero shaped (inc seat tube), I can only find standard round tubed posts with aero shaped top sections.