Fitting Middleburn cranks to my Patriot

[bigdavevw]

Hi guys, just wondering what i need to fit Middleburn RS7 ISIS crnks on my 06 Patriot? I want to run a double ring, with bash guard and Blackspire chainguide.
What length of bottom bracket do i need 113mm?
Can i run a Blackspire guide with an ISIS BB or does it have to be hollowtech?
What spider do i need? I,m guessing a tripple ring one?

Cheers
Dave

 

[Scrat]

Interested to see how this goes as I gave up in the end

I found that by running such a short BB (113mm with a couple of shims inside the cup to space it over a bit) that the spider ring just about touched the cup I still had the worst chain line ever

It seemed to all come down to the RS7s, old turbines were fine, New external BB raceface somethings :shock: were fine. Now onto Carbon Truvativs that are also fine

With regard to the current clique thing of ditching the big ring for a bash guard and a guide. I also did that - Its great!
but when I went onto the modern cranks I didn't have a 4 bolt plate, and thought a guide without plate would be daft. Using the logic that I only occasionally dropped my chain back in the day I went for the two ring NO Guide. I spent the whole weekend waiting to nut myself. you know what, it hasn't happened yet. I guess if everything is set up properly a guide seems a bit overkill?

 

[bigdavevw]

I found a pic on the net of a guy using middleburn,s on a Patriot, i was going to post it here, then i relised it was actually your bike Scrat

Yea seems like a tricky one, will do a bit more research, then give up and fit Evolve XC cranks with a chain guide
I have Raeface Diabolous cranks on it now, but they weigh as muh as me so they have to go

Dave