Chain Guide

dave2pvd

Prototype photographed, mounted on a Specialized SL Pro. It ought to fit just about any bike with a braze-on front derailleur.

The keeper does not touch the frame. The only contact point is the mounting bolt.

Some more details: CNC-machined 6061-T6 aluminium. Finish: brushed aluminium or clear anodized.

Since the first prototype was made, improvements were added to the design. All edges are now beveled. A channel has been routed along the length of the part. On the leading edge, there is a heavy bevel to improve chain guiding. See the other 2 photos.

Comes with an M5x20 and an M5x25 stainless steel Allen bolt and washer.

€18ea, plus €4 shipping. Limited quantities - this is a hobby piece rather than a commercial venture!



PM me if interested.

Super Freak

Hi Dave,

What length are these?

I purchased a K-Edge version recently for my Focus Cayo triple and it is too short at 95mm. For a 105 triple I reckon I would need about another 20mm.

These are a good idea as my perfectly adjusted chain decided to make a break for freedom off the inside of the small chainring and managed to put a few small paint chips off my loveley CF frame:mad: Never had any trouble with my front shifting before or since the incident.

blorg

Super Freak wrote: »

These are a good idea as my perfectly adjusted chain decided to make a break for freedom off the inside of the small chainring and managed to put a few small paint chips off my loveley CF frame:mad: Never had any trouble with my front shifting before or since the incident.

Exact same thing happened with my Cayo triple incidentally.

dave2pvd

Super Freak wrote: »

Hi Dave,

What length are these?

I purchased a K-Edge version recently for my Focus Cayo triple and it is too short at 95mm. For a 105 triple I reckon I would need about another 20mm.

These are a good idea as my perfectly adjusted chain decided to make a break for freedom off the inside of the small chainring and managed to put a few small paint chips off my loveley CF frame:mad: Never had any trouble with my front shifting before or since the incident.

They are right at 100mm. Alas, they are curved at the business end - like other manufacturers'. I would not recommend it for a triple.

gman2k

Hi Dave, would they fit a compact chainset?

dave2pvd

gman2k wrote: »

Hi Dave, would they fit a compact chainset?

gman2k,

I just uploaded 4 new photos of the prototype version, fitted to my Specialized. The Spec has a 39/53 chain set. Have a look at the pics that show how the device snugs up to the 39. Please ignore the dirt & grime. It was wet out there today.

Note: the prototype's dimensions are identical to the final version's. The only difference is the fancy beveling and routing.

It may work with a compact - I just can't say for sure. You'll have to make the judgment call.

I do think it is long enough. The issue would be the curve. Would it curve inwards too much above the small ring? If so, you could always file off a portion of the curve.

Dave

Super Freak

They are right at 100mm. Alas, they are curved at the business end - like other manufacturers'. I would not recommend it for a triple.

Thanks for the reply Dave. I'll have to try to get another solution.

Exact same thing happened with my Cayo triple incidentally.

Yup complete PITA:mad: Took me about 20 min pulling at the chain while trying not to damage the frame any further to get it out. Ruined that spin (And my bar tape !!).

Joff

Dave,

Was very impressed with this when you first posted in Dec. After my chain dropped a couple of times recently i ordered a K-Edge from Wiggle which arrived today (not had time to fit yet) otherwise i would definitely order one, Hope you sell them, they look great,

Joff.

dave2pvd

Joff wrote: »

Dave,

Was very impressed with this when you first posted in Dec. After my chain dropped a couple of times recently i ordered a K-Edge from Wiggle which arrived today (not had time to fit yet) otherwise i would definitely order one, Hope you sell them, they look great,

Joff.

Thanks Joff!

And thanks to everybody else for showing interest.

bcmf

Dave I tried t email ya but came back with this
"I apologize for this automatic reply to your email.

To control spam, I now allow incoming messages only from senders I have approved beforehand.

If you would like to be added to my list of approved senders, please fill out the short request form (see link below). Once I approve you, I will receive your original message in my inbox. You do not need to resend your message. I apologize for this one-time inconvenience."

I didnt click the link

dave2pvd

bcmf wrote: »

Dave I tried t email ya but came back with this
"I apologize for this automatic reply to your email.

To control spam, I now allow incoming messages only from senders I have approved beforehand.

If you would like to be added to my list of approved senders, please fill out the short request form (see link below). Once I approve you, I will receive your original message in my inbox. You do not need to resend your message. I apologize for this one-time inconvenience."

I didnt click the link

That's a new one.

I just pm'd you with a different email address. Ought to work.

Lumen

Received today, installed in 2 mins. A right yoke it is too.

Thanks Dave!

dave2pvd

Now that looks bloody good!

Thanks for the feedback, Lumen.

BTW: there's another batch in the works. It will be completed tomorrow. The colour of choice for this round is: black.

dave2pvd

Check this out:

gman2k

@ Lumen
Is that your Scott addict frame? Just thinking of getting one of these from Dave!

Lumen

gman2k wrote: »

@ Lumen
Is that your Scott addict frame? Just thinking of getting one of these from Dave!

Sorry, missed that post. Yes, its an Addict. I like it.

@dave2pvd: those black ones look fantastic. Might order another one when the next bike comes in. Do they work with band-on mechs?

dave2pvd

Lumen: braze-on only.

For band on, I'd recommend the N-Gear Jump Stop. I would not recommend the Dog Fang.

Raam

Organising a group buy.

ednwireland

are these triple friendly yet ?

dave2pvd

ednwireland wrote: »

are these triple friendly yet ?

ednwireland, I don't know the answer to that. It should work. No guarantee though.

Super Freak

ednwireland, I don't know the answer to that. It should work. No guarantee though.

If these are the same length as the last batch I doubt if they are long enough to reach the inside of the small ring on a triple. They won't on my Cayo with Shimano 105.

dave2pvd

Super Freak wrote: »

If these are the same length as the last batch I doubt if they are long enough to reach the inside of the small ring on a triple. They won't on my Cayo with Shimano 105.

They are longer. By 5mm, or so.

Super Freak

Thanks Dave, Must check mine again over the weekend.

Cadex

@ Dave2pd - Can you help? I have what must be common but none of the chain catching devices appear to address, a pretty much non-round (oval/ squared) Carbon Fibre tube, which is fairly chunky (can get measurements) and a triple chainset, the derailleur for which is a band-on.
Is there a reason why your unit would not work - you seemed to recommend others for band-ons? My deraillerur would have a bolt in pretty much the same place as a braze-on? I definitely could do with SOMETHING that does this job after scratching my lovely paint-job recently...
Thanks.

dave2pvd

Cadex wrote: »

@ Dave2pd - Can you help? I have what must be common but none of the chain catching devices appear to address, a pretty much non-round (oval/ squared) Carbon Fibre tube, which is fairly chunky (can get measurements) and a triple chainset, the derailleur for which is a band-on.
Is there a reason why your unit would not work - you seemed to recommend others for band-ons? My deraillerur would have a bolt in pretty much the same place as a braze-on? I definitely could do with SOMETHING that does this job after scratching my lovely paint-job recently...
Thanks.

Cadex, I really don't know if it will work with band-on or not. I suppose it's worth a try - surely the device can be mounted with spacers (washers) underneath so that it clears the band's Allen bolt recess?

Have you tried an N-Gear Jump Stop? I believe the clamp is plastic/flexible, so it might conform to your tube shape.

dave2pvd

Bump!

Why?

4 hours into my ride tonight, my chain made some serious contact with my chain guide.

Frame gouge prevented

dave2pvd

dave2pvd

600

D!armu!d

Are these still available Dave?

Looking for one in black to fit campag compact.

dave2pvd

D!armu!d wrote: »

Are these still available Dave?

Looking for one in black to fit campag compact.

D!armu!d,

I have a few left. You'll need the Campag machined washer (EUR2ea) also.

Anyone else? It will save (you) postage if I can send several.

dave2pvd

dave2pvd

Bump!

Did you know that this device can help you win the Tour de France?

gman2k

dave2pvd wrote: »

Bump!

Did you know that this device can help you win the Tour de France?

Dave, got my catcher in the post today - Cheers!!!!

PS, Roche had trouble with his chain catcher last week during a wheel change!

dave2pvd

gman2k wrote: »

Dave, got my catcher in the post today - Cheers!!!!

PS, Roche had trouble with his chain catcher last week during a wheel change!

Good stuff. Post up a pic once you have it installed.

Anyone got Roche's number? What about Lavenu?

gerrybmw

dave2pvd - just wondering how much these weigh?

dave2pvd

Gerry, they weigh about as much as a sneeze.

Seriously, since they're made out of 6061 aluminium, they're very light. Right at 10g to be precise.

gerrybmw

Perfect - would like to order 2 (in black) for use with Campag compact chainsets. Please PM me with details of cost etc.

tunney

Should another one be ordered and posted to Andy Schleck?

doozerie

Getting further off-topic here, but Schleck should possibly consider updating his SRAM Red rear derailleur instead.

dave2pvd

Curiously, Brother Schleck and I have an almost identical setup. Red RD, chain catcher, Spec crankset, SL Pro frame (pretty close to the S-Works).

I have had some strange mis-shift that jams the chain....I had always assumed it to be chain suck due to worn rings.

Lemag

Hi dave2pvd,

If you're still selling these could you PM me to exchange details for payment and delivery.

Thanks.

dave2pvd

Lemag wrote: »

Hi dave2pvd,

If you're still selling these could you PM me to exchange details for payment and delivery.

Thanks.

PM'd you Lemag.

dave2pvd

Chaps,

It looks like I will be in Ireland during the next week.

I can bring a quantity of these over.

If interested, pm me asap. I think I am flying out tomorrow.

dave2pvd

TheDocMan

If anybody has any doubts about these DON`T! They`re a classly functional piece of kit. Fine for 53/39 chainset but just check about other chainring sizes especially Compacts.

gman2k

TheDocMan wrote: »

If anybody has any doubts about these DON`T! They`re a classly functional piece of kit. Fine for 53/39 chainset but just check about other chainring sizes especially Compacts.

I'm running one of Dave's catchers on a Campag compact - no problems