[Closed] 650b+ (and other plus sizes if you like) - rim, tyre, frame, fork combinations,

Slightly OT but I Impulse bought a 27.5+ Hardtail yesterday. Took it for a quick spin today and loving it. Only problem is in the current conditions the spray from the front wheel. The issue is it's got a lefty- anyone got any ideas of any mudguards that will fit? Also how are people finding the nobby nics. I've got WTB bridgers on i45 rims. The grip seemed pretty good when I dropped the pressure to around 10 psi but the nics look like they've got a pretty aggressive tread. Thanks

I reckon you could fit a mud hugger - they're fairly stiff so they'd probably cope with being mounted on one side if you fix it firmly enough that it doesn't spin round the leg

Or one of those rubbish looking but very effective SKS shock boards that fit to the head tube

http://m.evanscycles.com/products/sks/shockboard-front-mudguard-ec004907

Currently running 3 inch Nobby Nic's on Halo's truly excellent 35mm Vapor wheels on my Turner Sultan with a Fox 34 up front. Plenty of clearance front and rear. The Nobby Nic's look massive and dwarf the 2.35 Hans Damff 29er tyres I had fitted previously. They are a very different beast from the 29 Nobby Nics.

Update 2 Yelli Mk1

So the Purgatory 3.0 turned up today, got it fitted but it wasnt well seated first time and had a wobble which meant it rubbed so it had to come off spend a bit of time in the warm and be remounted, ok this time. It spins ok in the Pike Forks although not a huge amount of clearence, anyway in went the sealent and we shall see if it 'grows' overnight!

Rear wheel/tyre still spins without contact 🙂

Bit of a rubish picture but best I can do for now, needs riding to see if its all a bit too close....

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Question for folks on 2.8 Nics - am about to order rims, torn between 30mm or 40mm rims. 30mm are 100g lighter - which is a fair chunk on the outside of the wheel.

What are you using/recommending?

I use 2.8 NN on... 35 mm rims 😀 sorry it doesn't help!
They are now exactly 70 mm wide. I'm sure that 30 mm rims would be no problem, but tire would be maybe 68 mm wide.

Question for folks on 2.8 Nics - am about to order rims, torn between 30mm or 40mm rims. 30mm are 100g lighter - which is a fair chunk on the outside of the wheel.

I think the general consensus is go the widest rim you can to ensure you can use the lower pressures without tyre roll.

I have a pair of i45 and p35 to build, was planning to do the p35 for the 29er and the i45 for the Fatbike, but think ill put the i45's as fronts with 35mm for the rears. Should be best of both worlds for each bike.

So im on a gen 2 yelli as well. Just picked up a set of hubs but still debating rim width due to potential clearance issues in the rear. Like the option of the wtb breakout 2.5 on an i45, but want to max the cush and have doubts about a 2.8 clearing the rear reliably on the i45. Any thoughts about a 2.8 on a velocity dually? Internal width 39mm(lil bigger than the i35 yet smaller than the i45). Really want a rekon+, but hate to wait to build these up til they arrive.

2.8 NNs here, 45mm front rim and 30 rear. The rear feels great, though I'm not a fan of low pressure - run at around 20 psi I reckon. At lower pressure, the rim (Easton Arc burps and leaks sealant. If weight concerns you go 30mm, if not 40mm.

though I'm not a fan of low pressure

Boxelder, are on a yelli as well? For me the lower pressure and added volume is the point. Weight is no issue. Wouldnt even be looking at this setup if it was. My purpose is to get more tire suspension safety margin in the rear of the bike without so i am destroying my rim and back in the rough. The added grip is a bonus.

Few pages on, (& a few months use), from my last post but just to add; the 45mm Dually rims work really well. Pressure wise I'm at about 18 psi rear (2.8" Trailblaster), 16 psi front (3" Knard). Rolling resistance isn't an issue I've noticed, but what I have noticed is a ride that's almost sublime.
The Knard/TB combo isn't the most grippy, but I've no complaints. Really happy with mine now. I'd no go back to "normal" tyres again.

I'm not really understanding why you want to run + tyres.

Boxelder, are on a yelli as well?

the 45mm Dually rims work really well.

Agreed - no 'squirmy' feel on that, even when burping tyre meant very low pressure. Too wide for the rear of a Solaris though and I want to be able to run a WTB TB on the rear without it having a really square/flat proile.

I've been playing around with a Nobby Nic 3.0 on a Scraper and at 20 psi it's just way too firm for a rigid front end. I've a set of Rebas to try too mind so haven't come to any final conclusions yet

Update 3 Yelli Mk1

Managed to fnaly get out and ride the Yelli today, it might not have been raining but the FOD conditons were plenty of mud. Tyres were at 15psi Specialised Purgatory 3.0 on the front and a Vee Buldozer 2.8 on the back all spining nice and free in the frame.

Out on the fire road and all was good, bit sticky but only to be expected given the conditions and couldnt detect any rubbing, happy days 🙂

First section of singletrack in the mud and was sliding about, but to be fair it was minging, however could now detect the occasional buz as the tyre intermitantly rubbed the frame, didnt seem too bad and quickly forgot about it as we moved onto firmer trails.

[img] [/img]

Took me a little while to get used to the different levels of grip but just loved it on the green lanes and firmer single track, one of which was basically a running stream. Big grin its so much fun, however every time I got more speed up I sensed that the tyres were rubbing. Wasnt going to worry about it though..... well not until I got home..

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Post ride and as you can see its looking a bit yuk...

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After washing it off at home time to take the wheels out and inspect the chainstays..

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Thats the result of 19km in the FOD, granted conditions under were not ideal but clearly theres quite a bit of rubbing going on, I reckon when its dry and dusty speeds will be higher and the sideway loads greater and well the rubbing is not going to go away.

Gutted really but im not going to continue and spoil my Yelli frame, I could put a narrower 2.5 tyre on but that sort of defeats the object and in turn will lower the bottom bracket more.

So its going back to being a proper 29er and one of my good riding buddies is hovering vulture like for the wheels! 🙂 Has been a great experiment and I reckon if it had been a Yelli Mk2 which I gather has slightly more room in the chainstays then it would have been a result.

Right. Plus it is.

Pro 4 hubs, XM551 rims and 2.8 NN Trailstar/Pacestar combo ordered.

[img] [/img]

Alpkit 650b plus wheels now available in normal...

https://www.alpkit.com/products/love-mud-rumpus-100-142-wheelset

...and boost

https://www.alpkit.com/products/love-mud-rumpus-boost-wheelset

Although cheap that's a 2.5kg wheelset!!

Wonder if you could drill the rims out?

Spotted Evans have [url= http://www.evanscycles.com/products/schwalbe/rocket-ron-evo-tl-easy-snakeskin-pacestar-650b-275-x-30-tyre-ec124069 ]3" rocket rons[/url] in stock. Anyone measured one of those yet?

I was admiring a Ron earlier. Looks quite Ralph-y.

[img] [/img]

My 3'' NN measures 78mm on my Hugo rims

Its far to big for any of my suspension forks and certainly won't fit in the rear of my frame.

Currently in a rigid fork!

Reading the above it seems my 2.8NN on i35 isn't going to fly in my My 1 Yelli. I've not ridden it yet but it spins freely at setup.

Rats.

I shall report back!

Had an email about this today - [url= http://www.on-one.co.uk/c/q/bikes/mountain-bikes/parkwood-275-plus ]On-One Parkwood 27.5+[/url]. [s]Appears to be only available as a full bike but I'm sure a frame only option will follow[/s]

EDIT: Appears it might just be a 29" Parkwood frame with no additional clearance in the rear stays 🙁

Has anyone successfully got a 45mm Scraper rim and tyre combo to work on a MK1 Yelli?

Before I sell on my Scraper wheelset I might give it one last try and was thinking of trying a WTB Breakout 2.5 tyre but it would be great to have confirmation before buying one.

Cheers

Its been in an email previously dmorts, just before crimbo i think. Its just the 29er frame with 27.5x2.8 trailblazers. I bought a set of the wheels on the xmas deal they did.

STATO, just realised that it's a 29" frame...

Wtb trailblazers and i45s have been used reliably in a mk1 yelli. 2.5 breakouts should not be a problem either.

http://forums.mtbr.com/canfield/yelli-screamy-photo-thread-756696-19.html

Check this guy out. It should answer questions on the mk1 i45 issue.

Thanks for the pointer cvman

cvman33 - Member
Wtb trailblazers and i45s have been used reliably in a mk1 yelli. 2.5 breakouts should not be a problem either.
http://forums.mtbr.com/canfield/yelli-screamy-photo-thread-756696-19.html

For the 2.8 WTB Trailblazers tyre to work it must come up smaller than other manufacturer offerings, I tried to use a Vee Buldozer 2.8 which clears until you ride, I'm sure I have read that the 'Trailblazers' are not too good in mud? and have absolutely no idea about the Breakouts..

I had got to a point of abandoning the project and had a mate after the wheelset with tyres which would have closed it off, but he's now doing something else so I'm just further reviewing.
It's almost trying to do it for the sake of it but then again a semi fat Yelli is a heap of grin to ride! but im reluctant to throw much more money at it.

The trail blazer knobs don't stick out much sideways so they clear frames well for their carcass size - eg they work fine in my Reba but if I fit my purgatory they don't clear even though the carcass is near enough the same size.

In deep mud, on the front, the tb is rubbish. I've found it OK on the back though

Side issue: it's gratifying to see all the Yelli on here! My fave frame.

I've have a mate who has been using a 27.5 x 2.5 Breakout on the rear of his Stooge with superstar 25mm internal rims. Apparently a very good grippy tyre for all conditions, but not the greatest at clearing mud if's sticky (not a problem at the moment 🙁 ). Comes up pretty big and still room in the frame, close enough to b+ to be worth it and still work in the mud is the essence of it.

davidxbrown
I'll give you my take on your rim/tyre/frame combo.
All tried on a MK2 Yelli.(so a tad more room)
i45 with 2.8TB worked ok until it got muddy. Then I personaly found there wasn't enough clearance and it jammed up with mud/ didn't grip very well.
Swapped the i45 rim for an i35 to get more clearance.
So far on the i35 i've had a 2.8NN great tyre but buzzed the chainstays a very small amount on hard cornering.
2.8 TB witch I've cut the center knobs on to allow it to dig in a bit more. That seems ok in all but real crappy/sticky mud.
2.5 Breakout great clearance and works well in the mud but not quite tall enough for my liking.

So for now I'm just switching between the TB and Breakout depending where i'm riding until my proper B+ bike turns up.
Though I may also trim the outer edges on the NN so it doesn't rub under hard cornering.

The benefits of B+ are IMO twofold:

1. More volume gives better cushioning
2. More rubber on the ground gives better traction

The 2.8 WTB's win on the first count, not so much on the second. The width of the tread is no more than a regular 2.4" tyre (this was intentional so that it would fit most any 29" frame) so you don't really have any more rubber on the ground other than that you might gain from running lower pressure thanks to the higher volume and use of a wide rim.

A 2.5 doesn't really cover either base of significantly more volume or rubber on the ground. Not saying that means they can't be a great tyre, just that you can't really put them in the same bracket as true plus size >2.8 tyres.

That said, with the proliferation of new >2.3 tyres on the market at pretty much every increment all the way through to 5.0 it can only mean more choice for riders and everyone has a better chance of finding the tyre which is right for them!

A 2.5 doesn't really cover either base of significantly more volume or rubber on the ground.

What frame are you getting Stu?

re Sam's note, the big win for me was, lower pressure as a consequence of the higher volume. It made my hardtail a 'softail'.

Thanks for the input Singlespeedstu, I reckon you have basically confirmed my thinking after the weekend ride, the Yelli MK1 frame is just a bit too tight on the chainstays unless you are prepared to accept rubbing or compromise with a smaller tyre.

The Yelli is a great bike and it makes me smile all day long as a 29er so I'm out for the time being on 27.5+

So who wants to buy some one ride old WTB Scrapers with tyres?

@david since you have the wheels it sounds to me like a case for n+1.

Just bookmarking thread for when my new bits are built-up and ready to show you. 😉

Lots of 3" tyres in the shops now, struggling to find any 2.8" for sale beyond the TrailBlazer. Specifically looking for 2.8 Schwalbes.

I've been reading the stuff on the Cotic website by Cy Turner and Paul Dexter (very experienced knowledgable guys) about the Solaris 2 development history. My rigid legacy Salsa frame is a lot narrower than their Solaris 2, so I'm going real conservative to start off with.

My Salsa is currently setup 2.25 Nobby Nic rear and 2.35 Hans Dampf front on 29er Arch rims: - I run at about 27psi/23-22psi. I really like the rigid experience, but I want just a bit more capability and cush for faster, rattly stuff (did some trails at Rivington Pike, Lancs on New Year's Day for example), whilst still keeping the whole setup really light and fast-rolling. My riding is slower and my trails less radical & hardcore than what the Cotic crew do, so I hope to learn from them, but adopt a lighter, slightly scaled-down ('Skinny-Chubby') solution more suited to me. Well that's the theory! 😀

I'm going try a '79er' setup!

I've ordered Easton Arc rims: (lighter weight than Aysms but not too expensive). I've ordered a 650b, 27mm width rear and 29er, 30mm width front. I really like the Hans Dampf, so to start off, I'm gonna stick with my current HD 29er front tyre and I've bought a new 2.35 HD (27.5 version for the rear). I reckon those tyres will come up w-a-y bigger than my current setup and I'll be able to drop pressure lots if I want to. I've not done the calculations but I don't think I'll be adding much weight.

In some cases I found b+ had less grip.

In the current conditions the wider tyres do not cut into the slop like a narrower 29" will. They do not float like a full fat bike.

I wanted my b+ to work for winter, but I found the 29" was better on everything bar comfort (hard tail yelli).

I'll investigate again in the summer.

Cheers - Interesting. I find the rear 29er Nobby Nic @ current pressure will loose grip and spin out on some steep slippy bits. I really like the HD front (better grip and still rolls well) but a 29er version won't go in the rear end of my frame. Best I can so is experiment.

Interesting, i've been pondering a 7+9er too. No interest in getting a new frame and fork to give full b+ clearance, and very happy with current 29er frame. So, thinking that a 30-35mm rear rim and 2.8 will give some grip and extra cush (for hardtail), and wider 29 rim at the front with whatever choice of 29er front tyre. The wheels would remain fairly light (compared with big 45mm rims) and cheapish. It'll also slightly slacken the bike, with trade off being a little bit of BB drop. Reckon it would make a swift, soft, grippy rear, and a nice big rolling, grippy front without too much weight added.

From other's experience it sound like a normal 29 rear is better in winter, so option to swap back whenever needed. Not sure if it's worth the bit of faff and cost though...