Bike sizing
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Bike sizing
I need help with sizing. I am buying a jamis renegade this weekend and I am really struggling with the right size. I am 62 with a 34 inseam. I have ridden a 58 and 61 and Im confused. I like how I feel on the 58, but the shop says I should buy a 61. It seems to have a long reach. Stand over is fine on both. I have back and neck issues, so I dont really want a super aggressive position. Help! This will be my first brand new bike.
#2
Full Member
I have back and neck issues, so I don’t really want a super aggressive position
61 cm is big.I think you got it right with the 58cm. 620 stack / 396 reach is A good
geometry for A endurance bike.With your pains I would look for A shop with A good
bike fitter. Jamis are very nice bikes,but I would not pull the trigger to fast on this one.
And welcome to BF forums.
https://www.bikeforums.net/cyclocros...de-owners.html
Last edited by Joeyseven; 03-21-18 at 11:49 PM.
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Thank you. The LBS has a bike fit guy who looked at me and said that his first thought would the 61. He points out that I would have the seat higher on the 58, and therefore be more hunched over/cramped. Currently the 61 has the seat and drop bars even, supposedly giving me a more upright position. And he said I can easily change out the stem if the frame is right.
#4
SuperGimp
I'm 6'2" with a 34 inch inseam and I have 2 58cm bikes and a 57.5 AND a 60, and the 60 is too big. You can put a short little stem on it but that affects the handling in not great ways.
Standover height is a terrible way to size frames though, so discard that notion. You're not experienced enough to know whether what you're feeling now will be what you're feeling in 12 months but... that's all you have to go on.
Standover height is a terrible way to size frames though, so discard that notion. You're not experienced enough to know whether what you're feeling now will be what you're feeling in 12 months but... that's all you have to go on.
#5
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The stack is only about 3/4" higher on the 61cm.
Is the stem max height on the fork on the 58? Can they flip it or exchange it?
I just feel that 61cm is way to big for you,even though the handlebars are higher.
And you like how the 58cm feels.I'm kind of surprise they are suggesting the 61.
Also check out other LBS in your area.good luck
Is the stem max height on the fork on the 58? Can they flip it or exchange it?
I just feel that 61cm is way to big for you,even though the handlebars are higher.
And you like how the 58cm feels.I'm kind of surprise they are suggesting the 61.
Also check out other LBS in your area.good luck
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The stack is only about 3/4" higher on the 61cm.
Is the stem max height on the fork on the 58? Can they flip it or exchange it?
I just feel that 61cm is way to big for you,even though the handlebars are higher.
And you like how the 58cm feels.I'm kind of surprise they are suggesting the 61.
Also check out other LBS in your area.good luck
Is the stem max height on the fork on the 58? Can they flip it or exchange it?
I just feel that 61cm is way to big for you,even though the handlebars are higher.
And you like how the 58cm feels.I'm kind of surprise they are suggesting the 61.
Also check out other LBS in your area.good luck
I don't see why someone that tall with a back issue wouldn't want the tallest bike he can easily fit, and that 1/2" of additional reach doesn't seem like much of a hurdle.
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Since standover is fine on both bikes, the other fit dimensions we need to consider are reach and saddle-to-bar drop. Either one of those is adjustable via stem length/angle, steerer tube spacers, and saddle height. You can probably be fine on either, so go with whichever you prefer.
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I'm close to @Birota 's size (assuming 34 is a pant's inseam not a cycling measurement). There is no correct answer 58 or 61. The 58 has a shorter headtube (2cm), slightly shorter chainstays (.5cm), and shorter top tube (1.5cm). These differences can be made up for with stem and seatpost/saddle mods. The larger frame should be a bit more 'stable' while the smaller a bit more 'responsive'. But with adventure size tires 'responsive' is a nebulous word.
In road bikes, for a smoother rides I prefer a longer wheelbase, for faster/spirited rides a smaller frame. I run between 59cm and 62/63 roadies.
Personally, i'd go 61cm with a stem length and angle that put the bars in a comfort spot. Zero setback on the seatpost. But since i don't know Birona's trunk/arms/etc lengths maybe trust the shop to get the position right. Then the rider has to fine tune.
In road bikes, for a smoother rides I prefer a longer wheelbase, for faster/spirited rides a smaller frame. I run between 59cm and 62/63 roadies.
Personally, i'd go 61cm with a stem length and angle that put the bars in a comfort spot. Zero setback on the seatpost. But since i don't know Birona's trunk/arms/etc lengths maybe trust the shop to get the position right. Then the rider has to fine tune.
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Thank you very much for all of this input. Ive riden many used bikes, so I want to make this new bike purchase perfect. As Ive read the sizing charts, it seems I am in a tricky spot between 58 and 61. I am so grateful for all of these considerations I can bring up at the bike shop.
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Also, stable and responsive would be the two words I felt when I test road the 61 and 58 respectively. I just dont want to regret buying a bike that is too big as I get older. I am 50 now.
#11
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I have found the 61cm frame works out best for me, with replacing the stem with one slightly smaller. With a 58cm, my knees are too far forward, and I can't afford that as it causes pain. The LBS is right when he said you'll need to have the saddle higher on the 58, therefore being more hunched over and cramped.
I could be wrong, but based on what I've learned thus far, I'd say you would need to get fitted properly on the saddle FIRST with correct leg length, fore/aft, tilt ...then adjust to the reach after that. I think if you do that you'll find the 61cm is the way to go.
#12
Senior Member
When in doubt always go smaller. I'm about the same size and would even consider 56cm because I love lots of bar drop. You have an enormous variety of stems to choose from but if the frame is too big your options are gone.
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Which model?
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I could possibly agree with you on road bikes in many people's fitting options. But this is an adventure bike.
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Again, from what I am understanding lately.
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Thank you. The LBS has a bike fit guy who looked at me and said that his first thought would the 61. He points out that I would have the seat higher on the 58, and therefore be more hunched over/cramped. Currently the 61 has the seat and drop bars even, supposedly giving me a more upright position. And he said I can easily change out the stem if the frame is right.
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That's exactly correct. You should not be moving your saddle up and down or backward and forward to adjust stack, reach and drop. It's better to set the saddle position for the correct leg length and angle first, and then adjust the stem for stack, reach and drop.
#18
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What one4smoke and GailT posted sounds like best way to start your bike fit.
Birota what model Jamis Renegade and frame material are you looking to buy?
I sent Jamis A email asking about their seat tube lengths on their size 58 and 61.I believe they list
the effective seat tube lengths looking at the top tube slope of the Renegade frame.
With your back and neck issues your going to have to find/trust your LBS fitter.
Birota what model Jamis Renegade and frame material are you looking to buy?
I sent Jamis A email asking about their seat tube lengths on their size 58 and 61.I believe they list
the effective seat tube lengths looking at the top tube slope of the Renegade frame.
With your back and neck issues your going to have to find/trust your LBS fitter.
Last edited by Joeyseven; 03-23-18 at 09:54 PM.
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I really appreciate all of this info. I am looking at the Jamis Renegade Expat. It is a Reynolds 520 steel bike with a carbon fork. As I read all this wisdom, I am thinking that perhaps the 61 may be best. I go to the shop tomorrow to try them out again.
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I'm with Trojan on this. I am exactly 6' 2" and have a 31 3/4" inseam, and a 35 3/4 sleeve, so I'm a little apish. I'm generally in between sizes too, but my 61 cm Norco was too big for me and I'm much happier on my Opus 59cm. I rode each for years. Because I'm apish the experts say I should go bigger in off sized bikes, but that is not what I'm comfortable on. Test ride that bike for as long as you can and if it feels good with the stock stem then that bike is your ticket. If you are comfortable on the 59, (I'm guessing your arms aren't freakishly long eg over 36") I think it's a mistake to be talked into the bigger bike. It's like the guy at Harry Rosen who ordered me a pair of size 13' wides from Allen Edmond's 'cause that's what the chart said, when my heart knew the 13's I tried at the store were too small.
I'm 55, have degenerative disk disease, ride a somewhat relaxed position, and hated my 61cm. I didn't ride it enough before I bought it. Know in your head you're comfortable with whichever one you buy, or make sure you can return it after a week or whatever.
I'm 55, have degenerative disk disease, ride a somewhat relaxed position, and hated my 61cm. I didn't ride it enough before I bought it. Know in your head you're comfortable with whichever one you buy, or make sure you can return it after a week or whatever.
Last edited by Brob2; 03-24-18 at 03:07 AM. Reason: not grammar goodly.
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Thank you. The LBS has a bike fit guy who looked at me and said that his first thought would the 61. He points out that I would have the seat higher on the 58, and therefore be more hunched over/cramped. Currently the 61 has the seat and drop bars even, supposedly giving me a more upright position. And he said I can easily change out the stem if the frame is right.