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  1. #1
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    2015 Diamondback Overdrive Pro sizing... Med or Lg? Please help b4 the sale ends...`

    Hi All,
    I have been a lurker here for a little while; 1st time poster. Tx for all the great info/site.

    I am looking to upgrade my one and only ride, a '02 Gary Fisher Sugar 2 FS 19" frame 26" wheels. I was hitting the trails (fire and single) a couple of years ago, but since have not been out on the trails. This is due to timing since 2 years ago we had our twins. Without too much support, it has been very busy for my wife and I to say the least. Thus, my riding has fallen by the way side. I just started bike/train commuting to work. It is great to be back in the saddle.

    I put some slicks Schwalbe Marathons and Shimano PD-M324 pedals on my Fisher to increase my efficiency to get to work on time since I don't have a big time window. It has been working out great, but my bike is showing its age. The BB is creaking/needs service or replacement, the front fork (I think an '02 or '03 marzocchi marathon bomber fork won't hold air and is leaking oil/moist at the crown, both the FD and RD are shifting a little rough, keep getting a dropped chain, rear brake cable needs replacement).

    I have been thinking about upgrading, and my friend who got me back in to riding 9 years ago suggests I get a commuter and then upgrade my MTB at a later time. I am less interested in doing that as I want one ride. Hence, that is where a 29er HT came in. I test rode one a couple of weeks ago and loved it. I love knowing it is more efficient as far as ground traveled for the same energy input, and its inclination to roll over anything.

    Now, enter the Diamondback Overdrive (DB OD, for short) and others. I have been shopping and researching everything for the last couple of weeks as far as what I would like/want. I have looked at both new and used (Ebay/Craigslist). I found some great options at Ebay but less at Craigslist. I was ready to bid on some at Ebay when I saw the DB OD at Nashbar.com for a great deal; not as great as it was 2 weeks ago when I could have gotten it, but I didn't b/c it was $43 dollars out the door over my $1k budget. Bad choice! Still great pricing now and I get more bang for my buck getting that vs. the used ones at Ebay right now.

    While I orginally looked at the DB OD Comp, the Pro just called out to me and with the pricing I saw 2 weeks ago, I can't get over it/let it go. While I may not be hitting the trails and/or riding as hard when I do get back out there, I dig the Pro b/c it is future ready for whatever I need. Great component groupset, tapered HT, 15mm thru-axle frt, great air fork frt (Fox 32 float CTD), 2x10, great brakes, etc. I have checked out Novara Ponderosa 29er, Airborne Seeker, GT Backwoods Expert, Trek X-Calis, Trek Superfly 6, Airborne Guardian. The Airborne Guardian reads well, but the SRAM X5 group is too low, 3x10, no tapered HT, not a 32" air fork, etc. The GT Backwoods Expert I test rode at Performance Bike was a Lg but I really didn't like the feel b/c I felt too upright and the handlebars felt too wide; maybe b/c more of a trail bike. For my cash, what I get, and trying to keep it under or at $1k, I just can't beat the DB OD Pro, especially at the current price. Sure, I may not be a good enough rider to tell the difference b/w a coil and air shock, but hey, why not stick with the better.

    About 2 weeks ago when I went to REI to test ride the DB OD Comp, it was a Med. 18" frame. Felt good. Unfortunately, they don't have a Lg in stock. I test rode a Cannodale Trail 3 29er Lg, and it felt pretty good, but perhaps I was too focused on the shifting which didn't feel as smooth as the DB OD Comp (saw it had a lower Shimano group - I think Acera or Alivio). Anyway, I don't know if I need a Lg or Med. frame DB OD Pro. I don't think I can really compare a Lg Cannodale Trail 3 as representative of what I can expect of a Lg DB OD Pro. I think I need a Lg from my inseam (33" per straddling the book method and noting it on the wall). I am 6'1" and about 158 lb. Can anyone give me any size recommendations? FWIW, to compare, the only other model in what I listed that I rode was the '15 Trek Superfly 6 19.5" and it felt great.

    Tx a bunch.

  2. #2
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    I'd go with the SF6 because of the dialed geo and resale value if you can get a good price. You sound like a 19.5 would be on the slightly small side but would fit.
    No way you are a medium for the DB Pro.
    That bike has a steep ht> of 71* and the Fox fork needs to be upgraded with a FIT damper with Gold oil.

  3. #3
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    Tx for the response eb1888.

    If it is helpful, I made this to compare the geometry b/w the 2012 Trek Superfly AL 19", DB OD Pro 18" and 20".

    2012 Trek Superfly AL (Gary Fisher) 19"
    Trek Bicycle
    Trek Superfly AL 2012 Mountain Bike | Evans Cycles

    Top Tube Length 24.5" (31.2 cm)
    Head Tube Angle 69.6
    Head Tube Length 4" (10.3 cm)
    Offset 2" (5.1 cm)
    Seat Tube Angle 72
    Seat Tube Length 19" (48.3 cm)
    Bottom Bracket Height 12.3" (31.2 cm)
    Chainstay Length 113" (44.5 cm)
    Wheelbase 44.4" (112.7 cm)
    Standover 30.8" (76.6 cm)

    2015 Diamondback Pro Medium 18" and Large 20"
    Diamondback Overdrive Pro Bike 2015 > Complete Bikes > Mountain Bikes | Jenson USA

    Size Medium Large
    Top Tube Length 23.5" (59.69 cm) 24.5" (62.23 cm)
    Head Angle 71º 71º
    Head Tube Length 4.13" (10.5 cm) 120mm (12.0 cm)
    Fork Offset 1.5" (3.8 cm) 1.5" (3.8 cm)
    Seat Angle 73º 73º
    Seat Tube Length 18" (45.72 cm) 20"(50.8 cm)
    BB Height 12.32" (31.3 cm) 12.32" (31.3 cm)
    Chain Stay Length 17.32" (44.0 cm) 17.32" (44.0 cm)
    Wheel Base 42.95" (109.1 cm) 43.78" (111.2 cm)
    Standover Height 30" (76.2 cm) 31.5" (80.01 cm)
    Stem Length 3.54" (9.0 cm) 3.54" (9.0 cm)
    Handlebar Width 26.38" (67.0 cm) 26.38" (67.0 cm)
    Crank Length 6.89" (17.5 cm) 6.89" (17.5 cm)
    Seat Post Length 13.78" (35.0 cm) 13.78" (35.0 cm)

    Is that a significant difference in head angle? Those/these details get too technical for me to be able to tell a difference. Additionally it was here that I read something about having to upgrade the Fox fork. Is that really necessary? I mean before this upgrade I assume people were dealing with it just fine. Could this perhaps be then a nod for the simplicity and perhaps easier maintenance of a coil fork? FWIW I don't know how to do the maintenace on those things/a lot of bike stuff, rather differ to the LBS. I just read that coil are easier to maintain once you get them setup how you need. But, this is diverging from my original topic.

  4. #4
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    Sorry if this is duplicate, but I don't know what happened. Let me try my post again.

    Tx for the response eb1888.

    If it is helpful, I made this to compare the geometry b/w the 2012 Trek Superfly AL 19", DB OD Pro 18" and 20".

    2012 Trek Superfly AL (Gary Fisher) 19"
    Trek Bicycle
    Trek Superfly AL 2012 Mountain Bike | Evans Cycles

    Top Tube Length 24.5" (31.2 cm)
    Head Tube Angle 69.6
    Head Tube Length 4" (10.3 cm)
    Offset 2" (5.1 cm)
    Seat Tube Angle 72
    Seat Tube Length 19" (48.3 cm)
    Bottom Bracket Height 12.3" (31.2 cm)
    Chainstay Length 113" (44.5 cm)
    Wheelbase 44.4" (112.7 cm)
    Standover 30.8" (76.6 cm)

    2015 Diamondback Pro Medium 18" and Large 20"
    Diamondback Overdrive Pro Bike 2015 > Complete Bikes > Mountain Bikes | Jenson USA

    Size Medium Large
    Top Tube Length 23.5" (59.69 cm) 24.5" (62.23 cm)
    Head Angle 71º 71º
    Head Tube Length 4.13" (10.5 cm) 120mm (12.0 cm)
    Fork Offset 1.5" (3.8 cm) 1.5" (3.8 cm)
    Seat Angle 73º 73º
    Seat Tube Length 18" (45.72 cm) 20"(50.8 cm)
    BB Height 12.32" (31.3 cm) 12.32" (31.3 cm)
    Chain Stay Length 17.32" (44.0 cm) 17.32" (44.0 cm)
    Wheel Base 42.95" (109.1 cm) 43.78" (111.2 cm)
    Standover Height 30" (76.2 cm) 31.5" (80.01 cm)
    Stem Length 3.54" (9.0 cm) 3.54" (9.0 cm)
    Handlebar Width 26.38" (67.0 cm) 26.38" (67.0 cm)
    Crank Length 6.89" (17.5 cm) 6.89" (17.5 cm)
    Seat Post Length 13.78" (35.0 cm) 13.78" (35.0 cm)

    Is that a significant difference in head angle? Those/these details get too technical for me to be able to tell a difference. Additionally it was here that I read something about having to upgrade the Fox fork. Is that really necessary? I mean before this upgrade I assume people were dealing with it just fine. Could this perhaps be then a nod for the simplicity and perhaps easier maintenance of a coil fork? FWIW I don't know how to do the maintenace on those things/a lot of bike stuff, rather differ to the LBS. I just read that coil are easier to maintain once you get them setup how you need. But, this is diverging from my original topic.

  5. #5
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    Posted last night a reply with all the geometry of the '12 Trek Superfly AL, and DB OD Pro 18" and 20." Too bad it's not showing up b/c it took me awhile gathering/composing that reply.

  6. #6
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    You need a large.

  7. #7
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    I thought I was on the edge between the 20" (L) and 22" (XL) DB OD C6, but after taking the leap and ordering the XL blind, it took all of 3s sitting on it to realize that I wanted the longer bike, it's just so much more planted, I have options on the stem length, and I've been quite happy with that decision.

    bbrock - try the 'Go Advanced', and see if 'Restore Auto Saved Content' comes up next time, it's saved many a manifesto for me on here.

  8. #8
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    I'd go with the large (~19") also. I normally see going from a 26" bike to a 29er is a single size step down. If your 26" bike was a 21" frame, a 19" 29er will be perfect. I'm a 35" inseam with the book on the balls method, and ride a 21" 29er. You have a 2" shorter inseam than me, so a 2" shorter seat tube would make sense.

    I'd also look at a slightly shorter stem.

  9. #9
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    REI will order a lg and you won't have to buy it once it comes in.
    I'd still work on the Superfly 6, it has improved geo over the 2012.
    I decide on whether you want a different damper. It depends on your terrain, speed and riding capability.

  10. #10
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    Well, I was too late to the show for the 2012 super fly at Ebay. Close to the sick deal, but I really couldn't put my hands around getting really good Shimano componentry, even if it was 3 years old. Not to mention I was just skeptical going with the 19" frame.
    eb1888, I am assuming u r talking about going w/ the 2015 SF6 I test rode, right? That was a 19.5" & felt very good. This maybe I am a 19.5" or 20". I did compare the geo on the '15 SF6 19.5" w/ the '15 DB OD Pro 20" and if I recall right I think it matched up closely. I'll have to check again.
    Also, REI has no more Lg of the DB OD Pro in stock (store or online), unfortunately. Otherwise I would have taken advantage of that.
    I do have the feeling though that the 18" DB OD Pro may be the wrong size.
    When I s/w the Nashbar.com tech over the phone and explained my dilemma, his calculations revealed that I would ride a 19.5." Thus, could 0.5" make it or break it?
    I'm going to compare again the DB OD Pro & SF6 like I was saying above,

  11. #11
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    You can cram unto a slightly undersize frame by using up cockpit space with a 20-25mm setback seatpost, 760 or wider bars and and 80mm stem or maybe a little longer if necessary.
    I'd still want the SF6 because I know how well that geo works for me.

  12. #12
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    Save up to 60% off new Mountain Bikes - MTB - Gravity 29Point5 29er Mountain Bikes. i would look at this bike if you don't need local shop support. It has slacker more stable geometry than the gt bike. Add a set of discount wheels and it is an exceptional bike.

  13. #13
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    What do u mean slacker geometry?

    I had already come across that website here when doing research. Great bang for your buck, but I am a little uncomfortable with the mixed reviews I've read about bikes direct and motobecames. Additionally I can't even find the geometry specs on the bikes. If I had that then I could possibly infer how it would ride compared to the GT, Trek SF6, and DB OD I rode. But ultimately knowing I can't ride one of the beforehand to test does make me uneasy.

    I have thought about paying slightly more for a bike at my local Performance Bike compared to what I am finding at Nashbar.com. While the two don't/may not have the same models, there are still some good enough rides at Performance Bike. I was looking at their line of Performance Bike exclusives such as the Fuji Tahoe 1.6 LE or the Breezer Squall 1.0 Performance Bike - Right Fit Mountain Bikes - Category

    Not to mention, they have a good return policy that if I don't like at anytime I can bring it back for refund in 1st yr or store credit after 1st yr. If I go through Performance Bike, Prices are more probably b/c of this return policy. I would be paying more, and maybe for less bike.

  14. #14
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    For me the return policy at PB was totally mint - I basically funded my carbon overdrive with turning back in my road bike (that I was just not having fun on, otherwise fine), and now I use that bike as my road ride as well (just put some low profile tires).

    As far as finding the geometry, manufacturer sites are usually better. In the case of the bikes listed, it might take some data mining to find all the information, but odds are it'll be a 71° HTA 73° STA setup, the keys being the Reach, Stack, and Stem Length

  15. #15
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    The motobecane support is garbage. The gEometry is on the page I linked. It is more stable and does not turn as sharp. You get x9 group set, Reba 15mm axle, and decent bArs, post, and ect.

  16. #16
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    Tx party wagon; found it. So is the gravity support any better than
    Motobecane?

    Here's the geometry of the gravity vs the 18" & 20" DB OD Pro. Sorry I'm duplicating the DB OD geometry again, just want it together comparison sake.

    2015 Gravity 29Point5 19"
    Effective Top Tube 23.43"/59.5 cm
    Head Tube angle 69.8°
    Seat Tube angle 72°
    Chainstay 17.52"/44.5 cm
    Wheelbase 42.13"/107.0 cm
    BB height 12.28"/31.2 cm
    Headtube 5.51"/14.0 cm
    Standover 30.3"/77.0 cm

    DB OD Pro Medium 18"
    Top Tube Length 23.5" (59.69 cm)
    Head Angle 71º
    Head Tube Length 4.13" (10.5 cm)
    Fork Offset 1.5" (3.8 cm)
    Seat Angle 73º
    Seat Tube Length 18" (45.72 cm)
    BB Height 12.32" (31.3 cm)
    Chain Stay Length 17.32" (44.0 cm)
    Wheel Base 42.95" (109.1 cm)
    Standover Height 30" (76.2 cm)
    Stem Length 3.54" (9.0 cm)
    Handlebar Width 26.38" (67.0 cm)
    Crank Length 6.89" (17.5 cm)
    Seat Post Length 13.78" (35.0 cm)

    DB OD Pro Large 20"
    Top Tube Length 24.5" (62.23 cm)
    Head Angle 71º
    Head Tube Length 120mm (12.0 cm)
    Fork Offset 1.5" (3.8 cm)
    Seat Angle 73º
    Seat Tube Length 20"(50.8 cm)
    BB Height 12.32" (31.3 cm)
    Chain Stay Length 17.32" (44.0 cm)
    Wheel Base 43.78" (111.2 cm)
    Standover Height 31.5" (80.01 cm)
    Stem Length 3.54" (9.0 cm)
    Handlebar Width 26.38" (67.0 cm)
    Crank Length 6.89" (17.5 cm)
    Seat Post Length 13.78" (35.0 cm)

    The 19" Gravity seems to match upper with the 18" DB OD. If I'm not mistaken, it looks like on the Grabity I would be slightly more upright and back vs. on the 20" DB OD, right? Shorter reach and and HT angle. Wouldn't it be more stable/comfortable with the longer top tube of the 20" DB OD, and be better to be positioned further over the front?

  17. #17
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    The geometry difference appear to be down to speccing a 120mm over 100mm fork. Nothing more. It's the same image link regardless of fork specced, so likely measurements are from the higher end builds with 120mm SID forks.

    What' I'm always trying to figure out is what model year most of those components are on the bikesDirect stuff- The Reba RL has been a black stanchion fork for a while, so it's an older fork.
    The WTB ST i25 wheels are a budget wonder (love my set, but they are a 600g rim on a budget wheel build; they're plenty rugged for my 250lb geared on an all mountain bike, and needlessly tanky on an XC hardtail, so those are a cost concession (but won't be flimsy, flexy, or anything but durable).
    The X9 drivetrains are more recent (Type2 clutch RD), and brakes are both excellent - that to me is the only significant upgrade

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