Chainguard for 66-tooth chainring?

Jeff Potter said:

I bought a 66-tooth Paragon chainring (for those fast
tailwind finishes... : ) ) and now I want a chainguard or
two for it. I note that it is tapped for chainguards.

These rings were made for MTB downhillers, I guess.

[...]

Quoted message said:

I've found a few mtb guards online but I don't see size
options.

Anyone have any leads?

This very question has just been asked ben assorted BHPC
members looking to replace flower pots, pie dishes and
chunks of old mudguard, with the result that Adrian sSetter
has determined them to be made by this lot:

gebhardt.czk klasicke.htmOpen ↗

Available in the following sizes:

BCD 116mm; 36 - 70 teeth 130mm; 38 - 70 teeth 135mm; 39 - 70
teeth 144mm; 41 - 70 teeth 94mm; 29 - 50 teeth 102mm; 32 -
38 teeth 104mm; 32 - 50 teeth 110mm; 33 - 54 teeth 112mm; 34
- 50 teeth 146mm; 42 - 48 teeth

Don't know about worldwide availability, but the UK agent is
Sonic - helmut.uklinux.nethelmut.uklinux.netOpen ↗, +44 (0)20 7243 2848

--

Dave Larrington - legslarry.beerdrinkers.co.uklegslarry.beerdrinkers.co.ukOpen ↗
===========================================================
Editor - British Human Power Club Newsletter
bhpc.org.ukbhpc.org.ukOpen ↗
===========================================================

Thanks Legs!

Paragon just emailed me: he doesn't make em anymore.

Hmm, maybe I could just make my own somehow as well. I dig
into the Czech pricing. Those guys make some great and CHEAP
rollerskis! (I just sent in an order for some.)

--JP

Go to your local metal supply outlet - one that sells
aluminum. I have yet to come across a metal supplier that
doesn't have off-cuts and odd-ends of metal and sheet laying
around that can be picked up for a song. Get a few pieces of
thin aluminum (2024 or 6061 alloy - 7075 is too hard to cut
easily with snips/shears) anywhere in the .032 to .040"
(common thicknesses) range and make one yourself. Very easy
to do and use a washer or two as spacers to keep it out from
the chain ring. Bear in mind that the AL thickness used to
make an actual chainring is in the .090 to .125" range, so
it doesn't need to be that heavy.

Quoted message said:

I bought a 66-tooth Paragon chainring (for those fast
tailwind finishes... : ) ) and now I want a chainguard or
two for it. I note that it is tapped for chainguards.

These rings were made for MTB downhillers, I guess.

OK, I use this ring on my fullyfaired HPV (30mph ave). But
in certain lowspeed turn situations I have to be very
careful to avoid derailing my chain. I figure that
installing the manufacturer's chainguards will cure those
blues nicely.

I checked out their website and they don't mention
chainrings anymore. I forget where I bought em.

I've found a few mtb guards online but I don't see size
options.

Anyone have any leads?

Thanks, JP

outyourbackdoor.com

Thanks for the tip. I spent about $15 for two panels of
Lexan and made my own. Looks good. Not heavy, but dang I
hate any weight. Oh well. It worked fine for its maiden
racing! --About the only thing that DID work well that day.

--

Jeff Potter
****
*Out Your Backdoor *   outyourbackdoor.comoutyourbackdoor.comOpen ↗
publishing do-it-yourself culture ... bikes, skis, boats & more ...
plus radically relevant novels at the ULA's LiteraryRevolution.com
... free music ... tons o' articles ... travel forums ... WOW!

Plastic . . . cool. Never even considered that 🙂 I have a
nice old biopace double chainring and I'll see how I like it
on my next trike. If I don't like it, I think I'll get some
.090" 7075 and make myself a 40/50/60 triple. I love the
speed on descents 🙂 I might try your plastic idea on the
outside too. I don't mind weight - I just view the weight as
extra training to bulk me up a bit and burn some too-long-
latent calories.

"Jeff Potter" <jeff@DELETETHIS!outyourbackdoor.com> wrote in
message "]news:[email hidden]...

Quoted message said:

Thanks for the tip. I spent about $15 for two panels of
Lexan and made my

own.

Quoted message said:

Looks good. Not heavy, but dang I hate any weight. Oh
well. It worked fine

for

Quoted message said:

its maiden racing! --About the only thing that DID work
well that day.

--

Jeff Potter
****
*Out Your Backdoor * outyourbackdoor.comoutyourbackdoor.comOpen ↗
publishing do-it-yourself culture ... bikes, skis, boats &
more ... plus radically relevant novels at the ULA's
LiteraryRevolution.com ... free music ... tons o' articles
... travel forums ... WOW!