Nitrous Ti Frame Only

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Nitrous 

Over the last several years of riding gravel, I have fully enjoyed the speed and the feeling of being really connected to the roads and trails, with nothing more than the air in my tires muting the impacts.  But as I pushed the limits of a gravel bike further and further, I realized there was no tire combination, no geometry, no drop bar shape that would create the control one gets on a mountain bike with flat bar.

That’s why the mountain bike was invented right?!

But for many of us, there is also a ton of riding that does not require a full suspension bike. So I decided to make a fast, lively feeling mountain bike with stable, modern geometry that utilizes a beautiful steering, short stem and install a wide bar. 

Voila, something far more capable feeling than any gravel bike when the going gets rough, and conversely far more nimble and responsive than a full suspension bike for powering along on the less demanding terrain that so many of us have easy access to.

The first part of designing the Nitrous was to make it inspiring to ride up the hill, almost urging you to new speed. With the low weight and balanced geometry, you will look at the steep sections of your favorite trails and know you can go further and faster than ever before.  To create that snappy feel I pulled the chainstays in nice and short. As always there is a balance to frame geometry aspects and the first couple protos were even shorter, but I really felt the bike should be more stable.  So the chainstay was stretched just a bit for some more stability on ungroomed trails. To maintain the awesome traction on the rear wheel, the seat tube angle was slackened a little.   

For me, the 'longer’ part of the longer, lower, slacker ditty means that you can now install a crisp steering, super short stem and still be in a focused, powerful position while climbing. This  ‘longer’ aspect to frame geometry also puts the front wheel further in front of your center of mass for more descending stability, and this is especially important when pushing the limits outside of the smoother flow trail networks.

Ok, now we need to talk about the ‘slacker’ part of the ditty. To be sure the Nitrous is slacker than most hardtails ever built. But it is by no means the slackest, the race to create the most extreme numbers is over. What is important is that the head angle is properly designed for the type of riding most will do on the Nitrous. Not so slack as to cause wheel flop on the tight technical turns and more importantly, it is not so slack that one cannot weight the front wheel on flatter turns.

The results of all the testing and geometry tweaking was to give the stability we expect out of a modern bike, without losing the liveliness we crave from a high performance hardtail. 

So, is the Nitrous a fast XC bike or is it a stable ‘downcounty’ trail bike capable of zooming thru the woods ducking branches and carving up the spaces between the trees, or is it the perfect bike for Leadville type endurance races? I would say yes, it is. 

 

sm md lg xl
virtual tt 580
615
645
690
seat tube 370
420
480
510
seat-angle 75.5° 75.5° 75.5° 75°
head tube 85
100
125
155
head-angle 66.8° 66.8° 66.8° 66.8°
bb drop 57
57
55
55
bb shell T47 73mm T47 73mm T47 73mm T47 73mm
chainstay 420 420 425 430
reach 420
450
480
510
stack 605
620
643
670
wheelbase 1120
1155
1195
1237
{ All specifications are subject to change. Measurements are given in ‘Millimeters’ and ‘Grams’ unless otherwise noted. }

Frame Specs

Seat Post Diameter  30.9mm
Headset Dimensions 44/56 semi-integrated, zero-stack
BB Shell T47x73
Fork Length (Geo based on 120 fork) 120-140
Flat mount 160 brake 180mm max
Max Tire Clearance

29'' x 2.6'' or 27.5'' x 2.8''

CUSTOM SHAPED TITANIUM TUBESET

Subtle shaping at the lower end of the Down Tube to the spread load over the BB shell and a dramatically flared Seat Tube both increase lateral rigidity for better feel when smashing the pedals. Along with the custom tapered chainstays, these subtle features set the Turner Ti ahead of the pack when it comes to ride tuning.

12mm Bolted AXLE

Bolts are stronger, stiffer, and simpler. Which is exactly why all our bikes come with them, it simply makes sense.


DESIGNED IN THE USA

 

Every aspect of this Turner Ti frame is designed and engineered in the USA. From the gorgeous CNC tapered head tubes to the proprietary dropouts, we have designed every aspect of the frame.

As you probably figured out from the great price and long list of standard features, this frame is imported. We found this factory when we were producing the carbon Flux frames years ago. Soon after we started developing the first Ti Cyclosys with them. Our frames are not the first or the only Ti bicycle frames they build, as they are a factory long known for building world-class titanium mountain and road frames. What drew us to this factory was their ability to taper and create butted titanium tubing, and their massive CNC capabilities allowing us to create exactly what we wanted with out cookie cutter head tubes, bottom brackets and dropouts. Even our chainstay bridge is CNC out of billet to be super thin and not create a mud shelf! 

T47 BB

‘T’ stands for threaded! Due to popular demand threads are back, and the new T47 offers bigger bearings & longer service life than older threaded standards. It will easily fit the larger and 30mm aluminum spindle creating a stiffer crank assembly, which is up to 18% lighter than the traditional steel spindle system.

FLAT-MOUNT DISC BRAKE

As this is a cross country oriented  bike, it has the latest standard in XC mountain bike brake mounting, Flat Mount 160. Now all disc brake manufacturers offer the flat-mount caliper due to the lighter weight and sleek look of the new caliper.

PURCHASE GUARANTEE


Why offer a Guarantee?

Simply put, we know that you are going to love your new Turner Bike. But given the chance that it just doesn’t seem to fit right, we want to ensure that you will be happy in the long run.

Our customer service rocks and our bikes ride like no other, but in the end, we want it to fit you.  If you cannot get comfortable on your new Turner Bike within 5 days of receiving it, give us a call and we will work out a solution, you may only need a different stem, or length of seat post. If that won't work, a different size frame can be swapped out.

Customer Reviews

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V
Victor
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“BACKGROUND
I have been riding full suspension mountain bikes for 10 years and did some cross country racing (race bike was a Turner Sultan) but ride mostly enduro type trails. Also had a Trance and Hightower. Made the mistake of selling the Turner after many years of use. Not crazy about the Santa Cruz Hightower as the VPP suspension is not anywhere as efficient as the DW link that the Turner had(some people like ultra squishy, just not my thing).

SWITCH TO HARDTAILS
In 2020 I caught the hardtail bug and built an Ibis DV9 29. Spent the past 18 months collecting Strava bling(Victor I on Strava) and decided to build another hardtail as I’m hooked. I ride in north NJ and is mostly rocky tech(home of Jeff Lenoski).

SHOPPING
I researched various brands, styles/geo, materials, pricing, etc. I enjoy the DV9 but not sure how long a lightweight carbon frame will last on north NJ chunk. Plus it has an old school short head tube so while fun is a little sketchy at times and the frame is not the most compliant. As to frame materials, some aluminum frame designs can be compliant but not enough for the trails I ride. Then of course steel is real, but also real heavy. Ultimately titanium came to mind but is generally expensive. Had not been on the Turner website in a couple of years and discovered he is now making titanium hardtail mountain bikes. Was priced competitively and ordered one. Arrived perfectly packaged at my doorstep soon thereafter. Frame is like a work of art. Stack of dimes welds look perfect .

THE BUILD
As to the build accentuated the ti frame with turquoise i9 stem and hubs, enduro wheels, Eagle GX but went old school with mechanical disc brakes(some good brands available now). Had the choice of 27.5 plus or 29er and went with 29 2.6. Nice fork - 120mm Rockshox Sid, designed for 10-15% sag so rides high in the travel(feels more like 130). It is stable and supportive but not too firm. This model Sid has 35mm stanchions yet is very lightweight. As to weight, well the frame is titanium so, yeah, it’s light and strong. I like the idea that this can be built as a cross country rocket or a fast trail bike.

THE RIDE
Initial impression is not surprising - modern geo, long top tube and short chain stays. Head angle slack enough to feel stable yet not too slack so not to be able to turn. Even though there is a long head tube, the chain stay is at a good length as I find it easy to wheelie and manual. And while titanium is the most compliant out of all materials, frame design still plays a big part. Turner definitely knows how to design frames. It’s the most compliant hardtail I have ridden, yet it pedals very efficiently! I built this as a trail bike but is still FAST. Very happy with this frame choice.

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