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 Post subject: Crank for a clyde
PostPosted: Thu Mar 27, 2014 3:44 pm 
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lurkin' kitty

Joined: Fri Mar 07, 2014 11:01 pm
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Hello peoples on zee line!
I gotsa issues with my crank making all sorts of god awful noises when I stand up and pedal, especially on the rightside down stroke.
Now I know I'm a uber clyde at 124kgs/198cm and I feel sorry for beating on my bike as I get fitter and begin to attack hills.
I am also aware my bike is cheap but I love it. I told my self when I reach my goal of 95kg ill get a new bike but till then this one will do. Anyway.
So I ride a early 2000's univega rover 350 mtb. Its got an mtb crank that I find to short(I run outa gears), so I'd like to move to a bigger crank but the dude at the LBS said I can't cause I got a 7 gear rear cassette instead of a nine so I'd have to replace both front and back derailleurs along with crank and cassettes. I felt like a twat, When did bicycling become rocket science?
Now like I said ealier I know my bike is cheap but its helped me lose 40kgs and I'd like it to complete the journey with it. Albeit a little faster with less torture on the crank. Any suggestions?
Al

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 Post subject: Re: Crank for a clyde
PostPosted: Thu Mar 27, 2014 5:00 pm 
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bad kitty!
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Get yourself a Shimano Zee group, that should take care of business, and is fairly cheap.
If you want further adjustments (those that Shimano offers on their more expensive brakes) look up my thread about Shimano Zent.
The Zent mod is an easy DIY deal, that will set you back less than the cost of a Bud Light.


Magura :)

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 Post subject: Re: Crank for a clyde
PostPosted: Thu Mar 27, 2014 6:15 pm 
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lurkin' kitty

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Thx Magura, I'm a bit confused, is the zee crank a single gear up front witha 10 speed cassette in the rear? How would those gear be in relation to existing set up, would it mean instead of my gear ending at 3f-7r I'd get 3f-10r?

To further confound myself I sesrched for some tech specs on my bike but only find a rover300 which I presume is the same as mine but without suspension fork. So the hardware lists like this:

Crankset 28/38/48 (I will count teeth when I get home)
BB shimano BB6500, 102mm spindle
BB shellwidth 68mm english
Rear cog 7spd 13-28.

So I gather if I'm runnin out of gears I need a bigger sprocket up front but I can't wrap my head around the ratio and lingo.



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 Post subject: Re: Crank for a clyde
PostPosted: Thu Mar 27, 2014 6:24 pm 
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bad kitty!
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You can go 11-36, 10 x 1 , that would bring you a gear ratio not too far from what you have already.
If you feel you lack in either end, you can go up to 11-40.

If running out in the top, you need either bigger in front, or smaller in the rear. going from 13 to 11 is a huge change in that regard.
You need a standard run of the mill 68-73 English (BSA) threaded BB.


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 Post subject: Re: Crank for a clyde
PostPosted: Thu Mar 27, 2014 6:54 pm 
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lurkin' kitty

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Thx again Magura, but I have yet more noobi questions, the 11-40 means that the small sproket has 11 teeth and the big 40? And if im to understand I can get an increase in speed either with bigger crank or smaller rear, is there a difference where I chose the increase from? Because it would be cheaper to replace only the rear casette instead of crank and front derailer and shifter for the same gain. My brain hurts.

For the most of my riding I find myself any where from 3-3 to 3-7, now that im comfortable standing I rarely go into 2 up front but I wouldn't not like to have the option for those lazy days.

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 Post subject: Re: Crank for a clyde
PostPosted: Thu Mar 27, 2014 7:11 pm 
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bad kitty!
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Yes, small 11 big 40T.
You will want to keep the front as small as possible, partly due to ground clearance over obstacles, partly simply to keep it out of harms way.
You will probably not get away with running a 7 speed crank, with a 10 speed system, so the cranks has to go anyway.
Running it 1x would save you the front derailleur though, but you'd have to get a bash ring to keep the chain ring safe.

I would say that 1 x 10 would suit you fine then.


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 Post subject: Re: Crank for a clyde
PostPosted: Thu Mar 27, 2014 7:16 pm 
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bad kitty!
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In other words:

A long cage Zee rear derailleur, a Zee shifter, a Zee crank set 68-73mm 175mm long 36T BSA thread, a 10 speed 11-36 (11 - 40 would be overkill when you use the gears as described above), and a 10 speed chain.
Beware that your rear hub will not be wide enough, so you will need a new rear hub as well. A Zee hub comes to mind.


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 Post subject: Re: Crank for a clyde
PostPosted: Thu Mar 27, 2014 7:23 pm 
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lurkin' kitty

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Thx magura! Got stuff to look at at the lbs this weekend

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 Post subject: Re: Crank for a clyde
PostPosted: Thu Mar 27, 2014 7:31 pm 
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bad kitty!
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http://www.bike24.de/1.php?content=8;na ... duct=34507

Cheapest Zee stuff in Europe AFAIK.


Magura :)

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 Post subject: Re: Crank for a clyde
PostPosted: Sat Mar 29, 2014 11:29 am 
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lurkin' kitty

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I checked out the zee, it's a nice piece of kit! But I'm thinking maybe I should keep 3 gear up front cause Athens is hilly and boy oh boy was it windy yesterday. I was looking at a shimamo Deore crank with bigger sprockets than I currently have so that should solve the running outta gears and I'll still have granny gears when my ass gets lazy. How does the Deore stand up to Clyde's thunder or gear grinding blunder?


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 Post subject: Re: Crank for a clyde
PostPosted: Sat Mar 29, 2014 1:34 pm 
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bad kitty!
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In that case step one up and take the SLX instead. It is pretty much the same as a Zee, just more rings.
I doubt you'll run out of gears with a standard SLX 3X setup and 11-36 in the rear.


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 Post subject: Re: Crank for a clyde
PostPosted: Sat Mar 29, 2014 3:12 pm 
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pussy
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What's your current bottom bracket? Chances are, the cranks are fine, but the bearing in your BB are shot.


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 Post subject: Re: Crank for a clyde
PostPosted: Sat Mar 29, 2014 3:43 pm 
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lurkin' kitty

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I'll check out the slx next week.
@Sti, replaced the bearings last july.


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 Post subject: Re: Crank for a clyde
PostPosted: Sat Mar 29, 2014 6:13 pm 
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friendly kitty

Joined: Sat Oct 19, 2013 9:27 am
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Magura wrote:
http://www.bike24.de/1.php?content=8;navigation=1;menu=1000,2,88;product=34507

Cheapest Zee stuff in Europe AFAIK.


Magura :)

The German Bikemarkt on MTBNews has even cheaper Zee stuff.


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 Post subject: Re: Crank for a clyde
PostPosted: Sat Mar 29, 2014 6:14 pm 
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bad kitty!
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Link?


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 Post subject: Re: Crank for a clyde
PostPosted: Sat Mar 29, 2014 6:54 pm 
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lurkin' kitty

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So I just looked at my bike a little closer. I counted the teeth on the big sprocket on the crank, 42 teeth, so my previous info is completely wrong.
New info:
Rear cassette is shimano 13-34t with an acera derailleur,
front derailleur just says shimano 050.
Crank doesn't say any thing, but it could be angry at me for all the abuse.

Pretty standard fare I presume. So I think I understand how the 38t 11-40 covers the same range. Having read a bit more I now also understand that a single spd crank doesn't flex as much underload as a triple spd.
Now that brought up another thought concerning the appropriate lengh crank arm for my height, wouldn't a longer arm also flex more and increase the torque on the components? I'm searching for a ruler now to measure the length of my crank arm to see what I got.

As for sourcing part from Germany, I gotta support the Lbs or I won't have one when I need one. Plus factoring in shipping and delays, not much price difference in the end. Most of the time I'll show the shop owner that I could by it online if their abnoxiously high, they usually match price in the end.

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 Post subject: Re: Crank for a clyde
PostPosted: Sat Mar 29, 2014 7:03 pm 
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bad kitty!
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SS cranks flex the same as multi speed cranks.

The length is a non-issue in that regard.
Mostly for a MTB it's a ground clearance matter, vs. a power matter, thus mostly ending up on 175mm.

Magura :)

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 Post subject: Re: Crank for a clyde
PostPosted: Sat Mar 29, 2014 7:23 pm 
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lurkin' kitty

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Thx again Magura for the info, there's alot to sift thru on the web. I mainly use the bike on the road, but greek roads being what they are, mainly potholes, it's like light trails with the occasional mountain thrown in for a laugh.



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 Post subject: Re: Crank for a clyde
PostPosted: Sat Mar 29, 2014 7:26 pm 
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bad kitty!
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Well, around here at HuckingKitty we stick to facts if available, and leave religion to PB and EmptyBeer ;)

Magura :)

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 Post subject: Re: Crank for a clyde
PostPosted: Thu Apr 03, 2014 7:29 am 
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friendly kitty

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Magura wrote:
Link?


Magura :)

http://bikemarkt.mtb-news.de/category/4 ... e&q_cat=41


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