Also - anyone run the G13 as a hybrid? Would that work? It's probably been mentioned already.....
Contacted Geometron bikes and Paul replied saying I needed a 575lb spring so way off tf tuned recommended spring rate.
i would highly recomend any one going coil to chat with them before buying a spring.
G13 as hybrid - interesting thought, I'm not aware it's been tried...maybe BB would be too low..?
I think hybrid works on the G16 becasue you're putting a 160mm fork & 29er wheel in place of a 180, fork with 27.5 wheel, so there's no dramatic change in the stack or BB. A 27.5 wheel on the back of a G13 is a significant BB drop, maybe too much in terms of pedal strikes..
I'd agree although worth noting that G13 is designed as a 29er so has BB drop of -30mm based on 29" wheels, G16 BB drop is -17mm as primarily designed around 27.5" wheels. G16 obvs hugely versatile but you don't get the full benefits of a 29er (not sure if you can adjust for BB drop using offset shock bushings etc..?), with G16 as hybrid you probably get best of both
Turns out nothings easy. Fox 600lbs spring turned up today. It’s about 13mm longer than the space of a 216x64 so doesn’t fit.
Annoying... I had that on an old Demo 7 years back... Fox had a custom shorter length for 600 and over.
Looking at the Pinion HT’s as a forever winter bike. I’m mainly South Downs so wonder if the GLF geometry would be suitable. Also at 5’7 not sure on sizing. Suspect I’d be a L in the Pinion AM (to achieve similar to my 2015 M Enduro) or a M in the GLF but that head angle makes me think it’ll be too lazy a front end......
any advice greatly appreciated (and yes I’ll try for a test ride if I can)
at 5’7 not sure on sizing.
I'm 5'8" and have a small(long) Ion GPI (Geometron) and have never wanted the next size up. I also have a Sick titanium Pinion hardtail in medium that is pretty similar dimensions to the small Ion. I'd certainly suggest trying to get some sort of demo before going bigger, longer may well suit you but worth checking.
For reference I also ride mostly on the South Downs as that's where I live and don't find the geometry a hinderance (maybe the added weight is but I'm not bothered). Steyning, QECP, Surrey Hills, etc it's more likely an advantage and I have found steep seat tubes a climbing advantage too.
I'm sure its been covered in the thread but for those with raw frames how are you cleaning them / keeping them shiny? The pad that came with mine seems to dull the frame rather than shine it???
In case anyone missed it, Singletrack did a Bike Check on my G18 https://singletrackmag.com/wp-content/uploads/2018/10/bike-check-george-thompsons-geometron-g18-29er/
Have also converted the G19 to 29. First ride was last weekend, loved it!
I’m sure its been covered in the thread but for those with raw frames how are you cleaning them / keeping them shiny?
With great difficulty! The Scotchbrite that comes with the frame (I had to get some on eBay as mine was missing) is too rough to give a bright finish. It's alright if you want uniform dullness after it's gone a bit patchy.
I went to the effort of stripping mine down. I got some Autosol and some mop head drill bits and did this to mine...
It looked pretty cool when it was built but it's impossible to keep it that shiny. It's currently in bits again for a full service I'm thinking of doing it again then using clear lacquer to preserve it.
Have also converted the G19 to 29. First ride was last weekend, loved it!
I was wondering when the 29er DH bikes would show up after Jack Reading got his. Get some pictures and a review up! I don't 'need' a DH bike but I've always had one in the past and I'd love a G19 with an EXT shock.
There's one of his G19 29er frames up for sale on pinkbike at the moment.
i bought his WC frame he raced at Fort William this year and even though it's a 27.5, a 29er fits in the rear fine and clears on full bump with room to spare.
Pic here: https://www.pinkbike.com/photo/16489056/
Interested in your idea of 'trail riding'?! that G18 looks like it would be more at home on enduro stages, are you racing it?
Looks like the frame started life as a Mojo/G16 prototype - is that why it's called G18? can't see it on GeoMetron/Nicolai website
You could always try using offset shock bushings to lower the BB if needed
Anyway - nice build!
@sharkattack Shock off for service at the minute, also needs a +2 degree headset as it's a bit too slack (60.5 degrees) see below...
@gibbonarms I don't think that's Jack selling that one (though it is one of his frames). Just be aware that yes, the back wheel fits but the tyre hits the seat tube before bottom out so you also need the longer mutators (47mm rather than 41mm) (£160 from Nicolai) to make it work properly. These lengthen the chain stay which in turn slackens the Head Angle to 60.5 in Low Setting & drops the BB to 325mm but then there's a circa 25mm boost by going to 29 so it ends up around 350mm. Need an Angleset as well to get the HA back to where it should be. Have ridden it once at 60.5 & it's rideable but I think it needs to be steeper.
@bilbo So far I've used it on the local loop - 2 hours, peak district style ride; uplift at Innerleithen & the push up at Havok. So yeah, it's main purpose is going down but it's actually bloody good at going up short steep climbs. I've only had one issue so far & that was descending, think it was on a trail called "Date Night 2" at Inners. I was following a mate & he were hauling but I couldn't get it round a couple of tight switchbacks & ended up just bypassing them & going straight down which was a bit wild :). Not raced it yet but maybe next year.
It is a proto. Was developed by Chris for DH but don't think it ever got any further than that. Have thought about offset bushings but think they would slacken the HA even further???
@rokitman Yes I found the same when riding in Finale in Sept, trails are pretty tight with switchbacks etc and took a lot of concentration to manoeuvre the long wheelbase around tight corners. I guess that is the one drawback about having a bike which is stable at higher speeds is that its less comfortable in the tight stuff. Having said that we bumped into a guy riding a Starling Murmur (v similar geo to Geometron) who didn't have any problems - said he just 'flicked' the back wheel around so maybe its a technique thing..?!
needs a +2 degree headset as it’s a bit too slack (60.5 degrees)
Waits for the Geometron evangelists to come along and say that you should be putting it in at -2 deg. 😉 (I am a Geometron rider.)
Can anyone tell me if the flip chip on my G16 can used to adjust the geometry? Or should it only be used for fitting different length shocks?
It was originally for geometry, yeah - there's a high and a low setting. I've never tried high.
On my Nicolai supplied G16 the flip chip is intended to adjust geometry NOT accomodate a different shock. Details of the difference it makes can be found in Nicolai's tech sheets.
and if your set up isn't standard I'd carefully check the full range of travel following any change just to make sure there is tyre clearance etc
I would like to try the higher setting for less demanding terrain as pedal strikes on flattish pedally rooty local trails does get annoying.
On my 2017 g16 it just has the shock lengths listed on the flip chip no mention of high and low.
I have the longer 222mm shock and 170mm forks so 170 front and back.
I will deflate the rear shock and check for fowling but i doubt it as im running 27.5s
The longer shock will mean you can't adjust geo, I believe -
I will deflate the rear shock and check for fowling
Good idea, otherwise you could end up with a goosed frame
Sorry not been about, been busy. COuld probably answer a few things but don't know where to start. I think most ok though which is great!
chip is also designed in current version, works fine on old, to allow a longer shock if not using for geometry purposes 222 is an official swop in so no problems with 29 or 27.5 going to the longer travel.
LOL. I think 58.5 might be a bit slack even for the most committed evangelist!
Undoubtedly. I did one of those enduro-endo-corners at one point, I wish I could say it was intentional but it wasn't 🙂
In the main I'm fine if I know it's coming. The "Reddy McRedface" trail at Revolution has some super tight corners which threw me the first time but now I know they're coming I can set up for them. It was the first time I'd ridden "Date Night 2" so...
Hi, I’m the proud new owner of a Mojo Nicolai GeoMetron, after riding a mates I just had to have one. I had a YT Capra CF Pro which was awesome but the GeoMetron is another level. I bought a ‘Longer’ frame in great condition on fleebay and swapped all the bits off my Capra to build the beast you see in the photos...Every ride just gets better and better as I grow to trust her more and more. My usual haunts are Cwmcarn, Pontypool and Bike Park Wales. Off up to BPW this Sunday for some practice before the mini enduro race in December which I have entered...no pressure 🙂
Looks like the wheels are posh wtb carbon rims probably c31?
Your right ‘howdoo’ WTB C31 carbon rims on Hope pro 4 hubs, awesome wheelset!!! The Michelin tyres are the best Ive used! I used to a Maxxis Minion DHF/DHR man but the Michelin's are so much more predictable in the turns and roll much quicker. This'll be my 1st winter on them but so far so good...
I’m booked in to.. ill keep an eye out for you.. few Geometron riders I know are racing.. will be an epic days racing..
Nice ‘ryzman’ 🙂 there’s a few of us entered on a mix of bikes, should be a good crack. Awesome day riding up there today, again the bike just impresses me every ride!
Got two mates looking for sensibly priced G13, 15 or 16 in really good nick. complete bike possible, frame + shock minimum.
Size Longer / M ideally from MY 2017 with lower ST. and Longest (tho Longer would be fine)
msg me if you know of anything. ta.
For anyone that still hasn't ridden one yet, there's a demo at Peebles this Thursday and Friday. (6th and 7th)
Might be worth a look if you're in the Tweed valley and hundreds of miles away from Mojo HQ.
Very interesting, been looking at replacements for my Enduro. Will this now replace the G13/15/16/19?
It replaces the G15 and 16, I'd think - probably still space for a G13 underneath anf G19 above.
Dunno how the hell I'm going to pay for it
If anyone is Geometron curious I've just advertised my G16 for sale in the classifieds as I've bought a new one to try 29" wheels. In Sheffield and get around quite a few places riding to meet up.
It replaces the G13 too. The metric shock allows appropriate shortening so that the whole bike can be easily dropped to run 135mm-140mm particularly with the EXT. Obviously the forks allow this too, the MORC due, the Lyric and the Formula being offered by GeoMetron/Mojo Rising/Nicolai.
For exact details of what you may want speak to CP/Paul etc
For clarity with the EXT its 140mm at the rear.
Sorry, but I'm just here to post a picture of my bike!
I actually stripped the bike for a full service at the end of August when we got back from France. Then some unexpected er, 'lifestyle adjustments' took place. Nothing disastrous by my standards but we could have done without it.
So many months later I'm back in action with silky suspension, new bearings, a colour change and some DIY graphics. Cycles in Motion in Sheffield did an absolutely mint job on the powder coating.
Just thought I'd show it off before it gets filthy.
42 or 44 equally as good, very little difference. Workable at 51 but very quick steering particularly at low speed that is very slightly at odds with wider handling neutrality but you do get used to it quite quickly, this is as a result further slackening the HA to deliver the right BB with the 29er on a G16 without SS (or CS in Germany where they are called compression stays) mutators, resulting in a higher flop factor.
I found changing to a 44mm from a 51mm made a significant difference. With a 35m stem and 800mm bars, the 51mm offset made the steering too light, especially at slower speeds. The move to 44mm made the steering more stable and less prone to flopping at the slightest knock on the trail. I wouldn't go back to 51mm.
Incidentally, I have my G16 set up as a 29er with a 216x64mm shock in the 'high' position and the BB is 346mm running a 2.5 Minion and a 2.4 DHR 2. I'm not sure if want it much lower as with 30% sag it feels low enough without too many pedal strikes.
Chainline, I don't suppose you know if I can get 29 wheels on a 2017 Argon GLF? I know it'll take 650B+ so wondered what will fit in the rear, and if the BB height would still be acceptable?
Thoughts about a playful slack short travel 29er got me thinking of an adapted G13, i love the idea of a Saturn 11 with a -2 slackset for 110mm of travel but the Saturn has crap rear tyre clearance.
So the G13 takes a 190x50mm shock, do you think a 184x44mm would fit with opposing offset bushes to shorten the shock space. If it fits???
You'd end up with a lower (you could still play with the flipchip) slacker 112mm rear travel matched with 130mm front.
In addition to the post above.....
Anybody know if you can fit a non-boost chainset with a 32t chainring to a G13 which is 148x12 boost rear end? I know most bike you can get away with it but be good to know for sure
Rik
I have a non boost xt with 30t oval on my 13 and there's plenty of room.
I was told they're actually designed for a non boost crank to give a better chain line.
A slightly longer travel Saturn with more clearance would be towards the top of my wishlist for a new bike. I liked the G13 when I sized down (i know, I know, that's not the point!) from a longest to a longer on a demo day, just didn't like the lack of water bottle bosses. Otherwise I loved it, fast, stable yet agile and pedalled well too. Basically a Saturn shaped G13 please!
Lawman - do you have boost or normal cranks on your G13?
Found this (translated) on the Mtb-news.de Nicolai forum from Kalle Nicolai himself:
'if it should be easier and playful, please keep an eye on our Saturn model range ..... maybe this family of framing will expand soon .... '
Looks like a more trail orientated Saturn might be on the way to replace the G13 maybe
Lawman – do you have boost or normal cranks on your G13?
Don't own one sadly, just borrowed one on demo for an hour or so, so can't help on the crank question I'm afraid 🙁
@Rik any reason you want to go down to 110/112mm travel? The G13 at 130mm is not a million miles away and has the head angle right about where you'd end up with the -2* Angleset in the Saturn?
These days I just like a taught progressive rear suspension, more as damage limitation rather than plush.
And I already have a very nice factory DPX2 in 184x44 ready to go.
Got an Ti spring CCDB from an old Orange Five build that I never sold if I wanted to have more travel on occasion
Cheers Stu - do you think a 32t would fit?
Bump just to see if any of the regular contributors are back off holiday for any help or thoughts on my posts above
With ease.
Spot on Stu. Boost rear with normal 49mm non boost chain line works so much better
g19 dh frame run with 29er wheels as an enduro bike ? possible?
ta!
Bike-componennts.de have G13 and Saturn soecial edition frames on sale.
Hi everyone,any idea about wich spring is better for my G16 with a DHX2 222X70?
I'm 75kg full dressed.
No idea @comodiver but if you give the guys a call or an email I’m sure they’d advise?
Well saw a guy at Daresbury Firs on one for the first time in the metal, cracking bit of kit 👍👍
Demo booked at Eastridge with Trail Head. G1 29, G1 27 (have requested the 29, but with just a wheel swap) and a Megatower. Has to be faster/more fun than the Enduro for me to change!
When are you doing the demo @Sir HC? Would be interesting to hear the comparison with the Megatower...
Eastridge:
Will be taking my Enduro as well as the benchmark.
Hi Mojo/ Geometron G16 fans,
hope its OK to post an early enquiry here - just putting a toe in the water
this seemed like the ideal place to mention that I am hoping I'll be upgrading to a G1 Xlongest soon, so selling my lovely Mojo Geometron G16 Longest in ano black.
Slightly longer swingarm / chainstay and longer shock [X2 with optional lockout] gives 175 rear travel. Non boost.
It's mint, only done about 100 hours from new due to illness and injuries.
Yeah, thanks, I'm OK now ;~}
pic here
It could be just a frame with Fox Transfer Post [with the Fox Float X2], or optionally frame+shock, Fox Post, suitable fork and wheels
(650B Mavic XL wheels and almost unused BOS Idylle SC fork.)
Anyone interested, please send me a PM.
don't reply here please, I might miss it, e-mail me on flatpedalthunder(attt)gmail(ddoottt)com
Hi som one asked about size, can't see the post now- at 6'2" (35"inside leg) I ride longest and am now considering XLongest
Demo Day at eastridge was interesting yesterday.
Firstly the Megatower, what an underwhelming bike, CC with carbon wheels, 36 grip 2 fork. Felt like a long legged trail bike than a big travel Enduro bike. Bike was harsh and such that there was far too much feedback through the bars and pedals, couldn't push the bike. It skipped all over the place and had to fight it to keep it on line, or somewhere near!
Now onto the geometrons. Rode a G1 27 first off before the Megatower, first trail had to adjust to how it wanted to corner, after that it just wants you to get off the brakes and throw it in. Rear tyre was dead so tricky to get it slowed down at times. Bike was a bit rattly, needed the clutch sorting on the mech and some 2224 tape on the back end. I hate noisy bikes!
After the underwhelming Megatower, was onto the g1 27. Fresh set of boots on this one! Also went a bit softer on the rear spring and and was on the formula fork (was riding the one in the milner video). Fork took a little getting used to, been on a Lyrik since Christmas, which is more sensitive (g1 27 was on a Lyrik). Felt more comfortable the second time round on the G1, even with a wheel size change. Can really lean on the front, more notable when it gets steep, you can still drive the front end without the fear of going over the bars.
Managed to snag a ride on a g1 27 at the end of the day when Mojo/Santa Cruz were going for a quick run round some of the trails at eastridge. Extra mileage helped to really learn the bike and the way it wanted to be ridden, good to be back on the Lyrik again. Rear tyre wasn't a problem this time as I knew I'd need to scrub speed a little earlier.
Rode some tight, steep switchback turns, bike had no issue turning, its super stable, yet still wants to change direction.
When it comes to replacing the enduro at the end of the year, G1 is currently the only one on the list. Last enduro was eating bearings on a regular basis, see how the replacement goes!
Rode a G1 27 first off
After the underwhelming Megatower, was onto the g1 27
Managed to snag a ride on a g1 27
So which one was the wheel size change?
needed the clutch sorting on the mech
Did you mention this to Chris Porter? Clutch mechs ruin your rear suspension, remember. But you're right, if I leave the clutch off on mine it makes a racket, and with it on I can't feel any difference.
G1 27, then Megatower, then g1 29, then longer Rider on g1 27
For me a quiet bike is a fast bike, well aware of Chris's hate of clutch mechs! Hence this one not doing a lot !
Having run through this thread - and posted a short one about being geometron curious, I have a couple of questions: I am looking at a G16
1) will this be over biked for the South Downs?
2) currently have FlareMax - will it make this redundant - or will the FM still be best for general trail riding.?
3) How rear shock specific are they? the storia is somewhat expensive - is it critical?
4) Can it be run at 160 mm front, or is that just a waste?
Would I be more sensible just to buy the new Cotic rocket ?
As the owner of a 2016 Ion GPI (essentially a first generation Geometron with a gearbox) who lives on the South Downs my opinion is
1. Yes. Does it matter? I happily ride mine on the South Downs and Surrey Hills along with anywhere else. Lakes, BPW, Moab, wherever. If it were my only bike I’d maybe feel it was a bit much but I have a hard tail I ride more often locally
2. Maybe, you may find one doesn’t get ridden much. Question is which?
3. Not specific at all. Mine started with a DBInline Air but I changed to an X2 due to reliability not performance. All the time Chris Porter was importing Fox they’d have been trying to sell you an X2
4. I’m sure it can. Get a fork that is simple to change travel on and you can try various travel options
I can’t help you with opinions about sensible, I just get what I fancy. I really like the Geometron though
In the interests of transparency, this is a stealth ad....
I'm selling my 26" wheeled Helius CC with Rohloff hub....beautiful thing and I suppose highly retro and very different to the new stuff.....but it rides beautifully.....I'm only selling as I broke my back a few weeks ago and I'm having a clearout to justify a new "toy" as part of my recovery!!
Might sit very nicely alongside someone's more modern Mojo/Geometron/etc......
[img] 
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^That just shows how much of an impact Nicolai’s collaboration with Mojo had on their geometry.
True - it's a different kettle of fish entirely - but still a nice kettle of fish!
Indeed, and the Rohloff is worth a fair chunk of cash
As the owner of a 2016 Ion GPI (essentially a first generation Geometron with a gearbox) who lives on the South Downs my opinion is
1. Yes. Does it matter? I happily ride mine on the South Downs and Surrey Hills along with anywhere else. Lakes, BPW, Moab, wherever. If it were my only bike I’d maybe feel it was a bit much but I have a hard tail I ride more often locally
2. Maybe, you may find one doesn’t get ridden much. Question is which?
3. Not specific at all. Mine started with a DBInline Air but I changed to an X2 due to reliability not performance. All the time Chris Porter was importing Fox they’d have been trying to sell you an X2
4. I’m sure it can. Get a fork that is simple to change travel on and you can try various travel options
I can’t help you with opinions about sensible, I just get what I fancy. I really like the Geometron though
Last question ...
I am 59 years old and 11 months. Is it young mans bike? Will people point and laugh?
Will people point and laugh?
I’m 51 and too old to care what anyone thinks. If I were proper old like you I’d care even less😀
Ideally I’d suggest getting a demo as soon as we are given the freedom to do so. Have a day out test riding in FoD and try to make a level headed decision
Who cares if someone is laughing about your bike?
If you like it, ride it😀
My hardtail rarely attracts positive comments on its looks, but it rides brilliantly for me. My g13 has attracted noting but positive comments and curiosity in real life:)
Geometron can also now supply a short travel version of the G1 with 145mm/158mm travel.
I initially contacted Geometron regarding the G15 but ended up with a G1, in the end the flexibility of the travel/wheel size/geo won me over.
