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FranzAM

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Reply with quote  #1 
Here is the new Ghost Gravel bike:

[image] 

https://www.ghost-bikes.com/bikes/lanes-road/bike/fire-road-rage-69-lc-29/

https://www.mtb-news.de/news/2018/06/06/ghost-sl-amr-8-7-al-fully-ghost-fire-road-rage-6-7-lc-gravelbike/?utm_source=forum&utm_medium=teaser&utm_campaign=news

it´s good luck for me. I have two big bike companys in my county: Ghost and CUBE [biggrin]

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z1r

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Reply with quote  #2 
Das Gewicht gefällt mir.  Und auch die 2,0″ Reifen. 

Schade dass ich mich schon ein All City Cosmic Stallion gekauft habe.
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jeanjacques

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Reply with quote  #3 
52,5mm BB drop ?
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FranzAM

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Reply with quote  #4 
52mm drop is not much. I try to get a test bike and hopefully I can tell you more soon
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chas

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Reply with quote  #5 
Quote:
Originally Posted by FranzAM


it´s good luck for me. I have two big bike companys in my county: Ghost and CUBE [biggrin]


nur zwei?  Ich habe ein Canyon gekauft. 

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chas

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Reply with quote  #6 
Quote:
Originally Posted by jeanjacques
52,5mm BB drop ?


that is what they say, but that just doesn't make any sense, especially with 2" tires.  I have ridden 50mm drop on 23mm tires, or a 62mm drop on 40mm tires, and both of those bikes sit pretty high.   50mm drop on 2" tires is like a 25mm drop on normal road tires.  WTF?
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Mark_Landsaat

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Reply with quote  #7 
That seems on the high side to me. 52.5mm drop is actually less than what you would typically find on an XC hardtail. Typo maybe? if not the BB is really high on that bike.


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Volsung

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Reply with quote  #8 
Its the bike geometry version of floodpants
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FranzAM

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Reply with quote  #9 
When You take 27.5x 49 tyres instead of 700 x 50 it´s 2-4cm lower. [wink]
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jeanjacques

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Reply with quote  #10 
The BB drop is from BB to axle, not related to tire.
CX bike is around 65mm, road bike 70mm, touring bike 75mm. Depends the geo of the gravel but it's mostly between 70-75mm. 50mm is for track bike.
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FranzAM

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Reply with quote  #11 
I know what "drop" mean and I own a lot of bikes with different drop: XC,CX, DH, track, Enduro and indeed one with "negative" drop [wink] 

75mm BB drop is for me too low espacially when you drive 650b 

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chas

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Reply with quote  #12 
Quote:
Originally Posted by jeanjacques
The BB drop is from BB to axle, not related to tire.
CX bike is around 65mm, road bike 70mm, touring bike 75mm. Depends the geo of the gravel but it's mostly between 70-75mm. 50mm is for track bike.


Well, its related to tire where it matters - bottom bracket height.  

I have a bike with 50mm bottom bracket DROP on 23mm tires.  Its pretty high.  This bike is spec'ed with 700c x 2" tires (29er).  That is going to have a crazy high bottom bracket HEIGHT - it will feel like riding a penny farthing.  ;-)
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jeanjacques

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Reply with quote  #13 
Quote:
Originally Posted by FranzAM
I know what "drop" mean and I own a lot of bikes with different drop: XC,CX, DH, track, Enduro and indeed one with "negative" drop [wink] 

75mm BB drop is for me too low espacially when you drive 650b 


Ok, I didn't understand what you mean previously.

Higher bb come from the use of long crank. Today, lot of study show there is no power gain with long crank and shorter one have plenty benefits. With 165 or 170mm and a lower bb you have the best of both world, stability and clearance.
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FranzAM

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Reply with quote  #14 
Talking about the right crank lenght will be an endless depate. Imo is crank length selection ultimately down to the rider’s personal needs. Some like it long, some prefer shorter. Depends on your personal issues (with knee or hip rotation, etc.)
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Mark_Landsaat

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Reply with quote  #15 
The argument that the BB height will be lower when you switch to 650B is kind of silly.

This bike is marketed and sold as a 700C/29er bike with 2.0 tires. If you ride this bike as is out of the box, the BB will be really high.

So if you want a more reasonable BB height, you buy this bike and immediately throw away the wheels that came with it and purchase a completely different set of wheels to make the BB height more reasonable? I can't see the logic in that.
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FranzAM

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Reply with quote  #16 
I did not say it was good or bad. I was just thinking about, why the engineer did it that way with 53mm  [ka] 

And now they offer the bike with 650b too:

https://www.ghost-bikes.com/bikes/lanes-road/bike/endless-road-rage-87-lc-27/

[csm_MY18_ENDLESS_ROADRAGE_8-7_LC_U_TAN_TITANIUMGRAY_18RR1003_31294a3490] 

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sweetspot

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Reply with quote  #17 
first you make everything possible to bring comfort to the rear end of the bike and then you put 31mm seatpost. And this BB drop. This bike is a mindfuck...
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FranzAM

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Reply with quote  #18 
In the next weeks I should get  a testbike. Than I can compare it to my CUBE with the long, lightweight and very comfy seatpost and tell you more.
31.6 seatpost diameter is imo due to the dropper posts. And using a reducer sleeve is allways possible.

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vlaanderen

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Reply with quote  #19 
Quote:
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vlaanderen

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Reply with quote  #20 
bombtrack is from cologne...
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Mark_Landsaat

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Reply with quote  #21 
Quote:
Originally Posted by FranzAM
31.6 seatpost diameter is imo due to the dropper posts. And using a reducer sleeve is allways possible.


That is something I can agree with, there are way more dropper post options in 30.9 and 31.6mm. However there's a growing number of 27.2 dropper posts available from OE suppliers which in my opinion would deliver the best of both worlds.

You get the comfort that a thinner seatpost offers and you have a dropper post. The 27.2mm dropper posts are a little shorter travel, but on a gravel bike I don't think anyone is looking for a 150mm dropper post.
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FranzAM

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Reply with quote  #22 
Mark I agree with You. But often the 27.2 dropper posts are havier cause of the thicker walls of the tubes
When you compare the Syntace P6 Hiflex Carbon post 27 cm out of the frame: 27,2 with 100kg weight on is 6.39mm deflection, the 31.6 post is 5.71.  That´s not so much difference in comfort.
And a heavy alu post will give most time a harsh ride

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chas

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Reply with quote  #23 
I have a canyon seat post and I'm shocked at how cush and comfy it is.  Not sure I could give that up.  (I have a CG-R and thudbuster too).  I like my cush ride in the rough stuff.
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FranzAM

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Reply with quote  #24 
The Canyon / Ergon post is really very comfortable. I have a PRC SP2 Carbon in my "DO it all" bike. Very comfy too and easier to set up than the VCLS post [wink]
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chas

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Reply with quote  #25 
I have the one piece VCLS - looks like a normal seat post, but is cush like the two piece version.  Best of both worlds (except price).  I don't think they sell it individually.   It is even better than the Specialize CG-R.
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