Saturday 8 September 2012

Redline CX Final build.



Boom here it is, my complete bike, race ready all set up ready to go.
There have been quite a few changes to it since the first instalment so ill show and explain why I have changed those parts.
This is a list of everthing in this pic.
Redline CX frame
Alpina CX Carbon fibre forks wiht alloy steerer
Hope Pro 3 hubs
Stans no tubes ZTR alpha 340 rims 28h, DT swiss comp spokes
Stans no tubes tubeless sealant.
Vredstren premiato 700x30c tyres
Sram Rival Cx cranks 170mm 46-38t
Crank bros Egg beater pedals
Controltech 100mm stem -5deg rise
Shimano dura ace 7700 Shifters/brake levers
    "             "           "      Front mech
    "             "           "      Rear Mech Short cage

Zipp service course sl bars size 44cm with a short and shallow bend
Zipp service course CX bar tape
Selle italia Flight saddle
Did have an Easton EC70 carbon post but the set back (lay back)
   was too much so just got some no brand post on.

weighed the bike the other day and i have dropped a fair bit from the start weight.
it started off about 22.9 lbs
and is now 17.4 lbs which is pretty sweet!

heres some more pics...



The Sram Rival cranks that i changed to was only due to the other cranks , Shimano dura ace 7700 175mm, being too long for me.  I was doing a fair amount of rides and my knees started to really hurt. I tried lower saddle position and my knees hurt the same tried higher and my hips started to hurt as well so I figured that I really needed smaller cranks. since the swap, no aches or pains..well except from the usual cycling pains i.e jelly legs, sore legs, nausea...etc.
I choose these cranks because I don't like the look of the new shimano cranks, Ultegra, 105, in my price range. I obvoiusly wanted the shiny carbon Sram Force/Red cranks but slightly pricey and the thought of bashing carbon cranks on rocks and destroying them doesn't sound awesome.

Hope Pro 3s on Stans ZTR alpha rims were a pretty cool idea also. Hope hubs were a must for CX racing.
Iv used them in DH riding/racing and have known almost every person iv rode dh with to have used them and i haven't heard of anyone who has had any problems with hope hubs.. if they had it was quickly fixed due to the availability of spare parts and ease of assembly/disassembly. The seals in these bad boys are also dam good which is useful in muddy conditions. Alpha rims were chosen because of the tubeless tyre setup design and are pretty light..370g a rim.




Zipp bars because the older bars bent and flexed way too much for my likings. I also dropped from a 46cm to a 44cm. Not intentional,  but because i miss calculated the size of the other ones...the writing had rubbed off.  Still not 100% sure if i prefer them wider or narrower but i reckon that if i went wider again, it would feel weird.















And thats that...
Tune back tomorow to find out if i sucked or not!

4 comments:

  1. Matt I'd be grateful to know your thoughts on your Stans rims as I've ordered some wheels for my pompino cx using Goldtec track hubs and Stans Alpha's from kev at Goldtec and I'm starting to have second thoughts as there seems to be a lot of negative stuff on bike forums about them blowing tyre's but my main concern is the stuff about them being flexy. I see you have a 28 spoke count which is what I've chosen but I'm going to up them to 32 before it's too late hopefully ? Great blog by the way...

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    1. Hi Dave.
      My rims are going absolutely fine. ( I weigh about 64kgs..might be useful info.)
      I built these up myself and it was the first wheel build i have ever done. 3x on the rear and 2x on the front. I have blown a tyre off the rim once. this happened with these cx tyres in the pictures and i had put too much pressure in for the soft non-stiff tyre bead. I used 73psi for this to happen. since then i have never put more than 60psi in. I don't really need to as its for cyclocross.

      Since having them i have only rode them off road. 2-3 times a week on my practice CX course (includes bunny hopping logs, harsh compressions, roots, off cambers), race every weekend and i have also rode a 60mile Cross event across dartmoor, which if you don't know included some of the harshest decents i have ever come across and i come from a downhill racing background. I have never had any noticeable flex and my wheels are still true! They feel very stable in hard cornering and everything else and i have never thought i need a stiffer wheel. i have burped a tyre (schwalbe RocketRon- also a very very good mud tyre), but this was at 20psi maybe less. which is too little pressure.
      32 is always a very safe bet if your worried about strength.

      Hope this helps Dave and thanks for reading!
      Matt

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  2. Thanks matt, that's a great reply, very informative and positive which is a lot more than I can say for what I've read elsewhere. I called in to see Kev this morning and changed the speck to the new Stan's Iron Cross rims until I realised that they are disc only so had to pop back and change the speck again to the new heavier Alpha 400 rim with 28 spokes which should be ok for my 75-80 kg weight. Thanks again Matt I'll be keeping tabs on your blog from now on...Happy riding

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    1. Hey glad i could be of help. I had also looked at the iron cross rims untill i realized they were disc only.. The Alpha 400 sounds like a good shout. Hope you get on well with them. What hubs are you using by the way?

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