Home > Event Coverage > Interbike

IB14: Jeff Jones Goes Big with Jones Plus 29+ Model, New Steel Spaceframe, Headset, more

10
Support us! Bikerumor may earn a small commission from affiliate links in this article. Learn More

Jeff Jones 29+ 275+ adventure bikes  (6)

The latest creation to come out of the Jeff Jones workshop is a 29+, but Jeff is very quick to point out that this isn’t your average bike with big tires. Jeff mentioned that the inspiration for the bike came while riding some super heavy cargo bikes in Asia that still handled well in spite of their exceptionally long wheelbase. While the Jones Plus also has a long wheel base, the fork and frame have been designed together to provide a super comfortable and stable ride that retains its quick handling.

Jeff also had the newest version of the Jones steel Spaceframe and Truss Fork on hand with 27.5+ wheels which will be an option, but he personally still prefers the larger 29+ wheels and tires. All together the new wheel options mean there are 4 different tire configurations possible with Jones frames making them even more versatile than ever before…

Jeff Jones 29+ 275+ adventure bikes  (11)

Jeff Jones 29+ 275+ adventure bikes  (12) Jeff Jones 29+ 275+ adventure bikes  (9)

Built to accept both 29″ and 29+ tires, the 4130 chromoly steel diamond frame and truss fork has plenty of clearance for any current 29+ tire offering. The front fork uses a 142x15mm thru axle using the same standard we’ve seen before on a few fat bikes. The rear is a standard 135mm QR dropout. The front fork will work with 29, 29+, and even 26×4.8″ tires.

Jeff Jones 29+ 275+ adventure bikes  (8)

One of the knocks against running 29+ and 29″ wheels on the same frame is the amount of change in bottom bracket height the larger wheels impose on the geometry. To keep that from being an issue the Jones 29+ frame uses an eccentric bottom bracket that allows you to raise or lower the BB based on the tires used. Other details include more rack and fender mounts than you can use at once, and massive clearance for frame bags like the Jones bikepacking bags.

For Jones, the key to the design of the 29+ is the geometry. This particular bike uses a 71 degree seat tube angle and a 67.5 degree head tube angle with 76mm of rake/offset to create a bike with short trail to keep the handling quick. Available in only two sizes, the bike is measured by top tube with a 24 and 25″ frame – though with different components and set up they both can be dialed in to fit a wide range of riders.

Jeff Jones 29+ 275+ adventure bikes  (1)

The 29+ was also built using an early sample of the new Jones headset. Instead of using cartridge bearings or ball and cage bearings, the headset will just use ball bearings creating a headset that is very light but also extremely durable and inexpensive. More details on the headset in the future.

Jeff Jones 29+ 275+ adventure bikes  (2)

Even though this bike was rolling 27.5+ tires on 35mm rims courtesy of WTB and Velocity, the real news is in the improvements to the Spaceframe. Along with the new orange color option, the frame uses smaller diameter seat tubes and provides improved rear tire clearance and a lighter overall weight.

Jeff Jones 29+ 275+ adventure bikes  (4)

Jeff Jones 29+ 275+ adventure bikes  (3)

For a frame built for 29″ wheels, the 27.5+ fit pretty well as we’re beginning to see more and more often.

Subscribe
Notify of
guest

This site uses Akismet to reduce spam. Learn how your comment data is processed.

10 Comments
Oldest
Newest Most Voted
Inline Feedbacks
View all comments
craigsj
craigsj
8 years ago

“For a frame built for 29″ wheels, the 27.5+ fit pretty well as we’re beginning to see more and more often.”

WTB sure can talk up that con job, can’t they? Sure they fit well, they’re just 2.5″ tires mislabeled. Works if you don’t mind your wheels being an inch too small.

You know what else fits well? 26ers retrofit into 27.5 frames. Fits a lot closer than this, in fact.

Joe
Joe
8 years ago

Instead of using cartridge bearings or ball and cage bearings, the headset will just use ball bearings.

Wat.

Andy S
Andy S
8 years ago

@craigsj, do you have a set of the WTB 27.5+ tires set up on rims?

Fan Boy
Fan Boy
8 years ago

“142x15mm thru axle using the same standard we’ve seen before on a few fat bikes”

you mean on one brand of fatbike. Salsa. No one else uses that spacing.

Ferrell
Ferrell
8 years ago

There are frame builders, fork builders, wheel builders, etc, you have to appreciate Jeff he does it all and well. He is a true bike builder.

rgeniec
rgeniec
8 years ago

29 plus?????

The Truth
The Truth
8 years ago

He designs them but the frames are made in Taiwan… both Ti and steel. Only thing he builds are the wheels at his shop.

warthog
warthog
8 years ago

@The Truth,
you seem to have overlooked, http://www.jonesbikes.com/custom-1/
It’s just the stock frame sets that are built in Taiwan.

anonymous
anonymous
8 years ago

@Joe
I think they mean like an old bike from the 60’s where you open up the headset and 40 loose balls go bouncing around on the floor.

Michael
Michael
8 years ago

Aesthetically, it’s hard to get past that fork. I’ve no doubt the design is stiffer…but is the increase in stiffness really an improvement when ride quality (i.e. smoothness) undoubtedly has to be effected negatively?

Subscribe Now

Sign up to receive BikeRumor content direct to your inbox.

Subscribe Now

Sign up to receive BikeRumor content direct to your inbox.