it's 12mm for -5, could be 10mm for +5 as your raising the bike slightly when it moves forward, i set up 25% rider sag both ends & For me on fast, flat, mild steep it noticibly lost front end grip, even bike park steep it wasn't as planted. BUT... This is just my experience... i'm not one for geeking on measurements but i knew the bike had lost grip over that 2 Deg, Nothing stopping you trying both set ups, easy enough to knock out/in
Crestline Bikes
- Thread starter jbrown15
- Start date
That is pretty sweet "mess" in the background by the way. I'm not sure that adding 15mm slackens by 2 deg, the maths just doesn't stack up (if you excuse the pun). I reckon about 0.4deg per 10mm of fork length.
This was calculated for my Firebird 29:
This was calculated for my Firebird 29:
| Pivot | Head Angle | Axle to Crown | zCrown | xFront Centre | Wheelbase | Rear Axle to Crown | aAxle to Crown | aWheelBase to Rear Axle to Crown | Reach | Stack | CS | BBDrop | lRAD | aRAD |
| 170mm Fox36 | 65 | 582 | 527.4711 | 245.9638 | 1217 | 1105.051 | 86.489 | 28.511 | 455 | 612 | 431 | 29 | 762.6067 | 53.37052 |
| +17mm Cup | 64.27893 | 599 | 539.6496 | 259.9603 | 1224.281 | 1105.051 | 86.489 | 29.23207 | 447.2621 | 617.6776 | 430.9659 | 23.57599 | 762.6067 | 54.09159 |
i'v honestly not got a clue re all the numbers, Alls i know is after -5 install the bike felt high and lost grip at speed in the front, This led me to check the HA, it measured 61,62 with -5 cup, 63,64 without. But Forget all the Numbers the Main thing is The bike Steers well. Holds a line when its rough. Attached is her sat high on the cup...
Crestline old vs new geom numbers would suggest that the difference isn't that much:
RS 75 SRAM – CX RACE (SOLD OUT) – Crestline Bikes (63.5deg)
RS 180 Special Team Edition – Crestline Bikes (63.1deg)
Can't argue with Pythagoras (because he's dead
)
Did you drop the bar height to compensate or had you run out of spacers to remove?
RS 75 SRAM – CX RACE (SOLD OUT) – Crestline Bikes (63.5deg)
RS 180 Special Team Edition – Crestline Bikes (63.1deg)
Can't argue with Pythagoras (because he's dead
)Did you drop the bar height to compensate or had you run out of spacers to remove?
eTrax
Member
I would like to go +.5 HTA, it will slightly lengthen reach. i would like to be in the ~64.2-5 range.
RS 180 frame!
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30 likes, 2 comments - pellejo_ptmApril 19, 2024 on : "Hola Pellejers!! Hoy hemos tenido una unidad especial, una Crestline. Una E-Bike con unos acabados que llaman la atención. Esperamos un ...".
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GeorgesEBike
E*POWAH Master
Can't wait to build up my new Crestline RS 180! Going with Ohlins air suspension, SRAM GX AXS Transmission drivetrain, SRAM AXS dropper post, Hayes Dominion A4 brake/rotors, NOBL wheels, Onyx Classic hubs, One Up bar, stem and pedals. Hoping to have it completed in the next 2 weeks.
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Plummet
Flash Git
Well if the voima ever dies this RS 180 will be on the top of my list. It hits all the geo numbers I like.
The only spec I don't like is the over leveraged shock at 2.77.
The only spec I don't like is the over leveraged shock at 2.77.
Robstyle
Active member
Solid build George. Ohlins will look great with that colour scheme too
Redders473
Active member
Evening guys and gals my names Darren and i represent CRESTLINE BIKES i will be racing the UK national series and other races so if you see me come say hello. If anyone in the UK is interested in the next batch of RS180s and would like to know more and talking through how the process and how troydon will save you some cash on import and VAT give me a shout. On here or instagram, @Darren.redfern
Cheers
Cheers
Already got one... best bike in the world. Where are your local riding spots Darren?Evening guys and gals my names Darren and i represent CRESTLINE BIKES i will be racing the UK national series and other races so if you see me come say hello. If anyone in the UK is interested in the next batch of RS180s and would like to know more and talking through how the process and how troydon will save you some cash on import and VAT give me a shout. On here or instagram, @Darren.redfern
Cheers
Posvar1
Member
Yo Darren! I already follow you on IG. Stoked that you are on the team. I’m about 15 months into my Crestline and it’s best bike I’ve ever had. Good luck in 2024.Evening guys and gals my names Darren and i represent CRESTLINE BIKES i will be racing the UK national series and other races so if you see me come say hello. If anyone in the UK is interested in the next batch of RS180s and would like to know more and talking through how the process and how troydon will save you some cash on import and VAT give me a shout. On here or instagram, @Darren.redfern
Cheers
Redders473
Active member
I live near Leeds so wharney dalby Guisborough, hamsterly all over really
Arethustra
Active member
Sadly, my RS180 arrived 2-weeks ago and hasn’t been out of the box yet as I’m still waiting on I9 to build a EN350 wheelset that seemed like a good idea after a few scotch’s…hopefully the color choices/lacing pattern for the spokes doesn’t end up looking silly
Rest of the parts are in and I can’t wait to get this thing built! Current build list includes:
Zeb 180mm & Super Double Deluxe Ultimate in the Rear
Maven Silver with 200mm discs
XO Transmission
Reverb Post
Yoshi ENDH Stem & Pedals
e13 Cranks and Chainring
Hopefully it’s only another week for the wheelset…
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Arethustra
Active member
Did your frameset come with a UDH?
GeorgesEBike
E*POWAH Master
No, it did not include a UDH. You don't need one with the XO Transmission.
Arethustra
Active member
Thanks, my box had a hole in the bottom and I wanted be sure that nothing had escaped as the render showed a UDH.
In retrospect, yeah it was kind of a pointless question since I don’t need it.
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Gnarly Bailout
Member
I made a NBD post on a different forum yesterday, and a commenter said "the bike looks heavy", so I thought I'd give a first ride impression. (Before you ask, I measured it at 53.7lbs/24.4kg with pedals). For a full powered, long travel (180mm) ebike, my first ride impression is 1). WOW! and 2) This thing feels surprisingly lively and playful. It did not feel heavy to me at all. Probably no surprise to any of you on this Crestline Forum.
jray17
Active member
Anyone running a fox 40? I put one on and immediately felt weird. Went back to the 38. Just curious if anyone is loving the big squish life? To me the bike feels alive with the 38. I have a kenevo on 29ers and fox 40 and it feels good. This bike is amazing though!
I am running boxxers and the turning radius is a bit annoying on occasions but I can live with it. I have never tried 180 38s but I am keen to compare but not willing to pay the price of experimentation so I will have to live with the verdict from the interweb
Robstyle
Active member
I tried a dh38 on mine, it made it dead, lifeless and the turning circle meant it was an immediate no.
Have an intend flash now, wouldn't bother with a dual crown ever again.
Have an intend flash now, wouldn't bother with a dual crown ever again.
Robstyle
Active member
Yeah the steering was a real bummer, I could probably cope with the other negatives.
Just try all the things on your bike is my recommendation
Just try all the things on your bike is my recommendation
Running 200mm 38mm Boxxers on mine. Absolutely epic, best suspension performance and tracking ever. Steering restriction has made me a much better rider as I'm looking for high lines on entry. Now I never hit the steering lock.
You can count on one hand the number of dual crown certified eBikes, so don't miss out on this superpower
New Boxxer is also a lot better than old one, it has great mid stroke support.
As for playfulness, it is no surprise that running a lot of sag on a heavy hitting well damped 200mm fork will make the bike planted. I would suggest trying a reach reduction at the same time, then you have more authority to move your weight around on the bike to trade stability for playfulness.
You can count on one hand the number of dual crown certified eBikes, so don't miss out on this superpower
New Boxxer is also a lot better than old one, it has great mid stroke support.
As for playfulness, it is no surprise that running a lot of sag on a heavy hitting well damped 200mm fork will make the bike planted. I would suggest trying a reach reduction at the same time, then you have more authority to move your weight around on the bike to trade stability for playfulness.
What boxxers? The current gen or the older ones? The older ones with +10 crowns, giving 56mm offset had a pretty poor steering lock on an ebike with a fat downtube, obviously the 0mm crowns had even less.
The 40 with a +18mm crown giving 52mm offset has a ton more steering lock compared to the boxxer.
Ive had both on a kenevo, I spent a few years trying to make the boxxers good, but out the box the fox feels so much better.
Never looked at the newer boxxers so I dont know how they are configured.
Yeah. Got the older boxxers with the 56. I am hanging out for a Pinion long travel bike. Hopefully a Zerode so not too keen to experiment with a new set of forks just yet....but maybe
