whyte t129s rear tyre clearance

stiffler83

Hello everybody.
I'm new to the forum and im looking for some help from someone who has or has had a Whyte T129s and knows a bit about them or someone very knowledgeable on Schwalbe tyres in the addix range.

I am in the process of custom building a 2014 frame and to be blunt im struggling with rear tyre clearance.

So to be specific about my build and me and give a bit of background and context.
I'm not the kind of guy that has £2500 to go and drop on a new bike. I'm the kind of guy that would probably upgrade half a new bike in the first 6 months even if I did though. I am a qualified construction equipment technician though so I am very handy with the tools and I get as much enjoyment out of working on bikes as I do riding them So this is why im building and not buying. Also ive never had a bike at this kind of level so ive been doing a lot of learning as I have been collecting the parts.

I picked up a really decent frame which is the grey and aqua 2014 model of the T129s. First thing I did look on the Whyte website at the original specs and parts it came with. Im lucky the frame pivots and bearings are all really good on mine and after doing all this i started shopping for parts to suit what I want from the bike.
What I decided was that I would build it at least to the original spec but anywhere I could id go at least one step better.

It came with rockshox reba 120mm ive bought 130mm revelations
it came with sram 2x10 and im going to put SLX 1x11 on it
Avid brakes original, SLX ive ordered.
160 rear 180 front standard. 180mm all round.
WTB skinny rims as standard. ive got the nukeproof 29mm wide ones.
70mm stem and 760 bars standard. 50mm and 780 I have got.
Rockshox reverb it came with and ive got the brand x one.

I see everything im doing or have done as a slight upgrade and it is still very much a work in progress as I still haven't ordered the drive train so I wont build it until everything is here in my hands BUT I test fit everything I buy when it lands just to be sure of a proper fit for the final assembly.

This leads me to needing some help with someone who has first hand experience with these bikes and or Schwalbe tyres.

The original spec for the bike shows WTB rims I believe 19mm wide and WTB 2.25 tyres but as said I have the nukeproof 29mm wide rims and having looked at the rear triangle I decided I would buy only the front tyre so I could check clearance before buying the rear one.

I want to run Schwalbe Magic Mary up front 2.35 and I want to run Hans Dampf 2.35 on the rear.
So my front MM arrived today. I set it up on the rear wheel to check clearance. 30psi. It rubs the rear chain side lower chainstay on the very outer knobble of the tyre but is clear everywhere else.

So what I need to know is will a 2.35 hans Dampf fit with it being more rounded or will I need to drop to 2.25 which I really don't want to do.
I do not want to drop £40 on a tyre I cant fit so I need solid advice on this from peoples first hand experiences and or pics or a hans dampf stood next to a Magic Mary so I can see the difference in profile.

Any help on this would be a big help for me as im literally a rear tyre and a groupset away from having all the parts I need to build it up and I need to get it dead right first time.

Thanks to everyone in advance.

steve_sordy

I can't help you with actual tyre widths, but what I do know is that you can't allow the tyres to get too close to the frame when the bike is stationary. Once you sit on it, the frame flexes, the tyre flexes and so on. When you are actually blasting round corners and jumping off stuff, the wheels flex as well as the frame and the tyre comes into contact with the frame. If you don't pay attention, you can grind your way through the frame very quickly indeed (especially on wet, gritty and/or muddy days out).

I thought I was safe once with side to side clearance, and I was. But I'd forgotten the clearance on the seat stay brace! The tyre easily missed the brace, but the tread picked up stones and was knocking lumps out of the brace! One long descent on a gravelly track and I'd have had a scrap frame!

Despite what I have written, if you are going to cut it close, then do yourself a favour and put at least two layers of helicopter tape at the contact points and keep an eye on it!

The Rookie

I have a T129. The original rear tyres were never wider than a 2.2, all the details on Whyte's website. https://www.whyte.bike/support/

A 2.2 will fit, most 2.25 will JUST fit (I have a Nobby Nic), you have to let the tyre down to fit the wheel even on a 2.1. Its not width that is the issue but the outer radius, one owner has ground out the section behind the BB to fit larger tyres and welded extra metal in to reinforce (posted on Whyte riders Facebook page).

I also built mine up from a frame, I'm running a Rev RCT3 up front at 135mm, 70mm stem with 680 bars (I don't like really wide bars), currently on the original Monarch RL rear shock but have an RP23 to go on, WTB i19 wheels on Novatech hubs and 1x10 gearing using a Sunrace cassette, 9 speed XTR mech with a road shifter and X0 cranks with a direct mount 30T and Giant Connect dropper.

stiffler83

Thank you rookie.
This is the info I have been looking for.
I don't have facebook for all the reasons in the news of late so I cant look up the page you mention but from what you have said it looks like a 2.25 is the way to go fore me also.
Sadly the Hans Dampf does not come in 29x2.25 so I will likely be getting the Nobby Nic same as you have.

I also had to let the tyre down to fit the wheel for my test like you said.