Pedal question - do I need new pedals or a new wrench?

I have these pedals:
http://www.unicycle.com/shopping/shopexd.asp?id=213

I have this wrench: http://www.unicycle.com/shopping/shopexd.asp?id=427

And I have these cranks:
http://www.unicycle.com/shopping/shopexd.asp?id=170

The space on the pedal where the wrench grips seems to be too thin for the wrench. In other words, the space between the crank and the pedal is too small for the wrench to fit in.

When I put the pedals on, I got them nice and tight, and then I couldn’t get the wrench out, because I had tightened the pedal down clamping the wrench in place. I had to work the wrench loose, scratching the crank up. The only other option was loosening the pedal enough to get the wrench out. Now I can’t get the wrench back in place to tighten the pedals.

So, is there a thinner wrench I can get? Or do I have to buy some new pedals with more space for the wrench to grab? I really like those pedals. They are the only plastic pedals with simulated pins that I’ve seen and I’m reallly liking them for my light-beginner-style-trials riding.

My left pedal is getting loose (practicing riding backwards), so I need to do something soon.

Nick,

Does the wrench get stuck between the pedal and the crank arm always or only when the pedal is in a certain position, i.e., in line with the wrench, if you can follow that. I’ve found at times that I have to position and hold the pedal perpendicular to the wrench so the pedal doesn’t bind with the wrench.

The other option, and probably not the best option, is to grind off the embossed ridge on the face of the wrench. That may give you just the room you need.

Bruce

That’s a good thought. I did try that, though. I tried rotating the pedal while trying to get the wrench in. As much as I spin the pedal, there seems to be no good position.

Maybe this could work, I’ll have to take another look at the wrench. Too bad I don’t have a grinder. Maybe with the dremel and lots of time…

Also, you may want to send an email directly to John Drummond. He must have lots of experience with this sort of thing. He was using the Park pedal wrench at UNICON.

Bruce

Re: Pedal question - do I need new pedals or a new wrench?

That’s amazing that it doesn’t fit. I have used the same wrench on an
uncountable number of pedal/crank combinations (but never those Monty
cranks) with no trouble. Ask John Drummond as he has dealt with those exact
cranks many times.

—Nathan

“nbrazzi” <nbrazzi.9n12a@timelimit.unicyclist.com> wrote in message
news:nbrazzi.9n12a@timelimit.unicyclist.com
>
> I have these pedals:
> http://www.unicycle.com/shopping/shopexd.asp?id=213
>
> I have this wrench:
> http://www.unicycle.com/shopping/shopexd.asp?id=427
>
> And I have these cranks:
> http://www.unicycle.com/shopping/shopexd.asp?id=170
>
>
> The space on the pedal where the wrench grips seems to be too thin for
> the wrench. In other words, the space between the crank and the pedal
> is too small for the wrench to fit in.
>
> When I put the pedals on, I got them nice and tight, and then I couldn’t
> get the wrench out, because I had tightened the pedal down clamping the
> wrench in place. I had to work the wrench loose, scratching the crank
> up. The only other option was loosening the pedal enough to get the
> wrench out. Now I can’t get the wrench back in place to tighten the
> pedals.
>
> So, is there a thinner wrench I can get? Or do I have to buy some new
> pedals with more space for the wrench to grab? I really like those
> pedals. They are the only plastic pedals with simulated pins that I’ve
> seen and I’m reallly liking them for my light-beginner-style-trials
> riding.
>
> My left pedal is getting loose (practicing riding backwards), so I need
> to do something soon.
>
>
> –
> nbrazzi
>
> Best Teriyaki in town
> ------------------------------------------------------------------------
> nbrazzi’s Profile: http://www.unicyclist.com/profile/917
> View this thread: http://www.unicyclist.com/thread/19875
>

From the pictures of your pedals and cranks it looks like the problem is the “counter bore” or recess around the threads on the cranks. The counter bore is there probably to provide a nice, true machined surface for the pedals to seat against. I think Bruce’s suggestion of thinning the wrench is about your only option short of buying a new wrench.

I have a Park RW3 pedal/headset wrench that’s just stamped sheet metal and is probably thin enough to work on your pedals. It’s not a great wrench though … it’s meant to carry around so it’s short. In order to get pedals tight enough I usually wear gloves because it really digs into the hand … your wrench is much nicer. Maybe Park makes a longer stamped pedal wrench?

Steve Howard

I don’t own a pedal wrench. I have used a standard 15mm wrench for years for pedals. It is thinner than a pedal wrench because it’s not designed to withstand the 150,000 ft-lbs of torque that you can’t possibly apply.

So, what your saying is the pedals sink deeper into these cranks than most other cranks because of that counter bore?

nbrazzi,

that Park wrench used to be flat w/out those annoying ridges.about 6 years ago it was totaly flat and worked great,then for some stupid reason Park had to go and fix something that was’nt broken.

go to a bike shop that has a grinder and they’ll probobly will know why you want to grind it,as long as you talk to someone thats a real mechanic and not a chain store bike-bot.

this is the one i use,very stong,very thin,very Campagnolo. :sunglasses:

campy.gif

Ah, now I understand… you mean a spanner

Phil, just me

Nick,

Phil’s been preaching this for a long time…but maybe you should try a cattle prod on your little pedal problem. Could do the trick.

alright, i knew that an american wrench is a spanner in UK(and i like the sound better) but what does wrench mean in the UK?

Re: Pedal question - do I need new pedals or a new wrench?

Try using a cone wrench. Since I am too poor to buy a pedal wrench, I have
used a regular 15mm (I think that is the size) wrench when it will fit and a
cone wrench when the regular wrench won’t fit (Which is often the case).
This is not great for the cone wrench since it is only about 3mm thick and
fairly soft but I have yet to seriously damage it.

Alex

Re: Pedal question - do I need new pedals or a new wrench?

If you have the 140mm monty cranks then you don’t really have the cranks pictured at unicycle.com. What monty did to make the 140s was to cut down the 158’s and re-tap them. As you can see by the design, that leaves the re-tapped area recessed, thus not leaving you much room for a pedal wrench. You’ll need a thinner wrench like this…

Bummer inconvenience. I have the Monty 140’s with twisted pc’s on my trials at the moment and I also needed a wrench on a diet to get the job done.

This is why you get Craftsman wrenches(or any other) with a lifetime warentee. They will replace tools if you break them trying to apply too much torque. Their logic is you’ll snap the Bolt before you’ll break the wrench.

Re: Re: Pedal question - do I need new pedals or a new wrench?

After collecting all the info from this thread, I took another look last night when I got home. What your saying is exactly the case, Dustin. There is some serious recess action going on with those cranks.

However, I solved the problem without getting a new wrench - and it was the Dremel what saved me. I used the Dremel to grind down the part of the pedal that gets in the way of the wrench. Its hard to describe without showing you the pedals, but I cleared enough space so that the wrench fits in and I didn’t damage the pedals (just ugly-ed them up a little). This is clearly only a viable solution for plastic pedals.

It looks like that’s a problem with the Monty cranks - its too bad because I love those cranks so much.